A5 Anesthesia System
Service Manual
Intellectual Property Statement
SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD. (hereinafter called
Mindray) owns the intellectual property rights to this product and this manual. This manual
may refer to information protected by copyrights or patents and does not convey any license
under the patent rights of Mindray, nor the rights of others. Mindray does not assume any
liability arising out of any infringements of patents or other rights of third parties.
Mindray intends to maintain the contents of this manual as confidential information.
Disclosure of the information in this manual in any manner whatsoever without the written
permission of Mindray is strictly forbidden. Release, amendment, reproduction, distribution,
rent, adaption and translation of this manual in any manner whatsoever without the written
permission of Mindray is strictly forbidden.
、
and
are the registered trademarks or trademarks owned by
Mindray in China and other countries. All other trademarks that appear in this manual are
used only for editorial purposes without the intention of improperly using them. They are the
property of their respective owners.
Contents of this manual are subject to changes without prior notice.
Revision History
This manual has a revision number. This revision number changes whenever the manual is
updated due to software or technical specification change. Contents of this manual are subject
to change without prior notice. Revision 1.0 is the initial release of the document.
 Revision number: 9.0
 Release time:
2022-11
© Copyright 2011-2022 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. All
rights reserved.
I
Foreword
This Service Manual is intended as a guide for technically qualified personnel performing
repair and calibration procedures.
Warnings, Cautions, and Notes
Warnings, Cautions and Notes
Please read and adhere to all warnings, cautions and notes listed here and in the appropriate
areas throughout this manual.
A WARNING is provided to alert the user to potential serious outcomes (death, injury, or
serious adverse events) to the patient or the user.
A CAUTION is provided to alert the user to use special care necessary for the safe and
effective use of the device. They may include actions to be taken to avoid effects on patients
or users that may not be potentially life threatening or result in serious injury, but about
which the user should be aware. Cautions are also provided to alert the user to adverse effects
on this device of use or misuse and the care necessary to avoid such effects.
A NOTE is provided when additional general information is applicable.
Warnings
WARNING: Whenever using anesthetic gases, nitrous oxide, oxygen, or any hospital gas
always follow the appropriate agent evacuation/collection procedures. Use the hospital gas
evacuation system.
WARNING: Use only an approved lubricant on any O-ring in contact with oxygen. Krytox®
is the recommended oxygen service lubricant.
WARNING: For continued protection against fire hazard, replace all fuses with the specified
type and rating.
WARNING: In order to prevent an electric shock, the machine (protection class I) may only
be connected to a correctly grounded mains connection (socket outlet with grounding
contact).
WARNING: Remove all accessory equipment from the shelf before moving the anesthesia
machine over bumps or on any inclined surface. Heavy top loading can cause the machine to
tip over causing injury.
WARNING: Possible explosion hazard. Do not operate machine near flammable anesthetic
agents or other flammable substances. Do not use flammable anesthetic agents (i.e. ether or
cyclopropane.)
WARNING: The use of anti-static or electrically conductive respiration tubes, when utilizing
high frequency electric surgery equipment, may cause burns and is therefore not
recommended in any application of this machine.
WARNING: Possible electric shock hazard. The machine may only be opened by authorized
service personnel.
WARNING: Avoid exposure to respiratory gases by always directing the fresh gas flow from
the fresh gas outlet to the waste gas scavenger.
II
Cautions
CAUTION: This device uses high pressure compressed gas. When attaching or
disconnecting backup gas cylinders, always turn the cylinder valves slowly. Use the A5 flow
meters to bleed down the pressure, watching the cylinder gauge indicate the depleting
cylinder pressure, before disconnecting the cylinder from the yoke. Always open and close
cylinder valves fully.
CAUTION: This device operates using compressed gas at high pressures from the hospital
central supply. When connecting gas supply lines attach the hose connection to the machine
before connecting the quick disconnect fitting to the hospital source. Disconnect the supply
hose from the hospital source connection prior to disconnecting it from the A5 gas connection
fittings.
CAUTION: Refer to the 3.3Equipment Maintenance Schedule for assistance when
performing scheduled periodic maintenance.
CAUTION: Do not leave gas cylinder valves open if the pipeline supply is in use and the
system master switch is turned to 'ON'. If used simultaneously, cylinder supplies could be
depleted, leaving an insufficient reserve supply in the event of pipeline failure.
CAUTION: Use cleaning agent sparingly. Excess fluid could enter the machine, causing
damage.
CAUTION: This machine must only be operated by trained, skilled medical staff.
CAUTION: Perform the electrical safety inspection as the last step after completing a repair
or after routine maintenance. Perform this inspection with all covers, panels, and screws
installed.
CAUTION: After changing the CO2 absorbent, carry out a system leak test.
CAUTION: Only Selectatec™ compatible vaporizers with Interlock-System may be used
with the A5 unit.
CAUTION: After each exchange of a vaporizer, carry out a system Leak test.
CAUTION: Do not clean the machine while it is on and/or plugged in.
CAUTION: Pressing “cancel” at any time during the procedure will cancel the session's
settings and reload the previously-stored calibration coefficients.
CAUTION: Depleted soda lime changes color. Replace the soda lime if approximately 2/3 of
the absorber content is discolored. CO2 absorbent can be safely changed without stopping
mechanical ventilation.
CAUTION: This equipment contains parts which are easily damaged due to electrostatic
discharge (ESD). Follow ESD prevention program when touching, taking out, or inserting
parts or components.
Notes
NOTE: Unauthorized servicing may void the remainder of the warranty. Check with the
factory or with a local authorized distributor to determine the warranty status of a particular
instrument.
III
FOR YOUR NOTES
IV
Contents
Warnings, Cautions, and Notes .............................................................................................II
Warnings, Cautions and Notes ................................................................................................. II
Warnings .................................................................................................................................. II
Cautions .................................................................................................................................. III
Notes ....................................................................................................................................... III
Contents ................................................................................................................................... 1
1 Theory of Operation ........................................................................................................ 1-1
1.1 Introduction ..................................................................................................................... 1-1
1.2 Electrical and Pneumatic Connections ............................................................................ 1-3
1.2.1 Electrical Connection ......................................................................................... 1-3
1.2.2 Pneumatic Connection ....................................................................................... 1-5
1.2.3 Connections between Pneumatic Circuit, Breathing System and Ventilator
Control Board ............................................................................................................ 1-10
1.3 Pneumatic Circuit .......................................................................................................... 1-13
1.3.1 Pneumatic Circuit Diagram .............................................................................. 1-13
1.3.2 Parts List .......................................................................................................... 1-14
1.3.3 Key to Symbols ................................................................................................ 1-15
1.3.4 Descriptions ..................................................................................................... 1-15
1.4 Components of the Anesthesia System ......................................................................... 1-29
1.4.1 Auxiliary Electrical Outlets .............................................................................. 1-29
1.4.2 Lighting Board ................................................................................................. 1-30
1.5 Breathing System .......................................................................................................... 1-32
1.5.1 Introduction ...................................................................................................... 1-32
1.5.2 Mechanical Mode, Inspiration.......................................................................... 1-32
1.5.3 Mechanical Mode, Expiration .......................................................................... 1-33
1.5.4 Manual Mode, Inspiration ................................................................................ 1-34
1.5.5 Manual Mode, Expiration ................................................................................ 1-35
1.5.6 Pneumatic PEEP............................................................................................... 1-35
1.5.7 Ventilator in Standby ........................................................................................ 1-35
1.5.8 Components of the Breathing System .............................................................. 1-35
1.6 User Interface ................................................................................................................ 1-36
1.6.1 Display ............................................................................................................. 1-36
1.6.2 Main Control Board ......................................................................................... 1-42
1.7 Ventilation Control and Drive ....................................................................................... 1-44
1.7.1 Motherboard ..................................................................................................... 1-44
1.7.2 Monitoring Module .......................................................................................... 1-54
1.7.3 Battery .............................................................................................................. 1-59
1.7.4 Heater of the Breathing System ....................................................................... 1-60
1.7.5 Anesthesia Calculation and Infrared Module Rack .......................................... 1-60
1.7.6 Power Board ..................................................................................................... 1-62
1.8 O2-driven Ventilator...................................................................................................... 1-64
1.8.1 O2-driven Ventilator......................................................................................... 1-64
1.8.2 High-pressure Drive Gas Regulator (200kPa, 29psi) ....................................... 1-64
1.8.3 Drive Gas Assembly ......................................................................................... 1-64
1.8.4 Tube Color Coding ........................................................................................... 1-64
2 Installation Guide ............................................................................................................. 2-1
2.1 Preparation ...................................................................................................................... 2-1
2.2 Assembly ......................................................................................................................... 2-1
2.2.1 Unpacking and Setup ......................................................................................... 2-1
2.2.2 Breathing System, Breathing System Accessories and Checkout Procedures ..2-11
2.2.3 AGSS Connections ............................................................................................2-11
1
2.2.4 Vaporizer .......................................................................................................... 2-12
2.2.5 Backup Cylinder............................................................................................... 2-14
2.2.6 Monitoring Products Mounting and Electrical Connection (if available) ........ 2-14
2.3 Factory Setup ................................................................................................................ 2-15
2.3.1 Function Activation .......................................................................................... 2-16
2.3.2 Drive Gas ......................................................................................................... 2-16
2.3.3 Flowmeter Standard ......................................................................................... 2-17
2.3.4 Flowmeter Pipeline .......................................................................................... 2-17
2.3.5 ACGO............................................................................................................... 2-17
2.3.6 Module Rack .................................................................................................... 2-17
2.3.7 AG Module ....................................................................................................... 2-17
2.3.8 BIS Module ...................................................................................................... 2-17
2.3.9 CO2 Module ..................................................................................................... 2-17
2.3.10 NMT Module ................................................................................................. 2-18
2.4 Functional Tests ............................................................................................................ 2-18
2.4.1 Gas Delivery System Tests ............................................................................... 2-18
2.4.2 Breathing System Leak Test ............................................................................. 2-18
2.4.3 O2 Sensor Calibration ...................................................................................... 2-24
2.5 Gas Supply Leak Tests .................................................................................................. 2-30
2.5.1 N2O Cylinder Leak Test................................................................................... 2-30
2.5.2 O2 Cylinder Leak Test ..................................................................................... 2-30
2.5.3 AIR Cylinder Leak Test.................................................................................... 2-30
2.5.4 N2O Pipeline Supply Pressure Leak Test ......................................................... 2-31
2.5.5 O2 Pipeline Supply Pressure Leak Test............................................................ 2-31
2.5.6 Air Pipeline Supply Pressure Leak Test ........................................................... 2-31
2.6 Breathing System Checks ............................................................................................. 2-32
2.6.1 AGSS Test (if available) ................................................................................... 2-32
2.6.2 Internal Gas Connections Test .......................................................................... 2-32
2.6.3 Alarm of Drive Gas Pressure Low, O2&N2O Cutoff Functional Test ............. 2-32
2.7 Performance Verification............................................................................................... 2-33
2.7.1 Standby Mode Ventilation Test......................................................................... 2-33
2.7.2 Manual Mode Ventilation Test ......................................................................... 2-33
2.7.3 Apnea Alarm Test ............................................................................................. 2-33
2.7.4 Alarm Silence Test ........................................................................................... 2-33
2.7.5 VCV Adult Ventilation Mode Test ................................................................... 2-33
2.7.6 VCV Pediatric Ventilation Mode Test .............................................................. 2-34
2.7.7 Airway Disconnection Alarm Test ................................................................... 2-35
2.7.8 PCV Adult Ventilation Mode Test .................................................................... 2-35
2.7.9 Pressure Support (PS) Ventilation Mode Test .................................................. 2-35
2.8 Alarm Function ............................................................................................................. 2-36
2.8.1 Setup................................................................................................................. 2-36
2.8.2 FiO2 Too Low Alarm Test ................................................................................ 2-37
2.8.3 FiO2 Too High Alarm Test ............................................................................... 2-37
2.8.4 Peak Pressure Alarm Test ................................................................................. 2-37
2.8.5 MV Alarm Test ................................................................................................. 2-38
2.9 Vaporizer Test ................................................................................................................ 2-38
2.9.1 Vaporizer Interlock Test ................................................................................... 2-38
2.9.2 Vaporizer Accuracy Test ................................................................................... 2-39
2.10 Other Tests .................................................................................................................. 2-40
2.10.1 Power Failure Alarm Test ............................................................................... 2-40
2.10.2 Work Light and Auxiliary Gas Supply Backlight Test ................................... 2-40
2.11 Electric Safety Test ...................................................................................................... 2-40
2.11.1 Test on Auxiliary Electrical Outlet ................................................................. 2-40
2.11.2 Electrical Safety Inspection ............................................................................ 2-41
2.11.3 Electrical Safety Inspection Form .................................................................. 2-41
3 Equipment Maintenance ................................................................................................. 3-1
2
3.1 Repair Policy ................................................................................................................... 3-1
3.2 Periodical Maintenance Kit ............................................................................................. 3-1
3.3 Equipment Maintenance Schedule .................................................................................. 3-1
3.4 Pre-operation test ............................................................................................................ 3-2
3.5 Maintenance Kit (12-month) Replacement ..................................................................... 3-2
3.6 Functional Tests .............................................................................................................3-11
3.6.1 Gas Delivery System Tests ................................................................................3-11
3.6.2 Breathing System Leak Test ..............................................................................3-11
3.6.3 Check the Sensor Zero Point ............................................................................ 3-15
3.6.4 Check the Accuracy of Flow Sensors ............................................................... 3-17
3.6.5 Check the Accuracy of Pressure Sensors ......................................................... 3-20
3.7 High Pressure Tests ....................................................................................................... 3-25
3.7.1 N2O Cylinder Leak Test................................................................................... 3-25
3.7.2 O2 Cylinder Leak Test ..................................................................................... 3-25
3.7.3 AIR Cylinder Leak Test.................................................................................... 3-26
3.7.4 N2O Pipeline Supply Test ................................................................................ 3-26
3.7.5 O2 Pipeline Supply Test ................................................................................... 3-27
3.7.6 AIR Pipeline Supply Test ................................................................................. 3-27
3.8 Breathing System Tests ................................................................................................. 3-28
3.8.1 Sample Gas Emission Test/AGSS Test (optional configuration) ..................... 3-28
3.8.2 Internal Pneumatic Connection Test................................................................. 3-28
3.8.3 Alarm of Drive Gas Pressure Low, N2O Cutoff Test ....................................... 3-29
3.9 Performance Verification............................................................................................... 3-29
3.9.1 Standby Mode Ventilation Test......................................................................... 3-29
3.9.2 Manual Mode Ventilation Test ......................................................................... 3-30
3.9.3 Apnea Alarm Test ............................................................................................. 3-30
3.9.4 Alarm Silence Test ........................................................................................... 3-30
3.9.5 VCV Adult Ventilation Mode Test ................................................................... 3-30
3.9.6 VCV Pediatric Ventilation Mode Test .............................................................. 3-31
3.9.7 Airway Disconnection Alarm Test ................................................................... 3-32
3.9.8 PCV Adult Ventilation Mode Test .................................................................... 3-32
3.9.9 Pressure Support (PS) Ventilation Mode Test .................................................. 3-33
3.10 Alarm and Automatic Fault Protection Function ......................................................... 3-34
3.10.1 Setup............................................................................................................... 3-34
3.10.2 FiO2 Too Low Alarm Test .............................................................................. 3-34
3.10.3 FiO2 Too High Alarm Test ............................................................................. 3-35
3.10.4 Peak Pressure Alarm Test ............................................................................... 3-35
3.10.5 MV Alarm Test ............................................................................................... 3-36
3.11 Vaporizer Test .............................................................................................................. 3-36
3.11.1 Vaporizer Interlock Test.................................................................................. 3-36
3.11.2 Vaporizer Accuracy Test ................................................................................. 3-37
3.11.3 Vaporizer Leak Test ........................................................................................ 3-38
3.13 Other Tests .................................................................................................................. 3-39
3.13.1 Power Failure Test .......................................................................................... 3-39
1.13.2 Work Light and Auxiliary Gas Supply Backlight Test ................................... 3-39
3.14 Auxiliary AC Electrical Outlets Test ........................................................................... 3-39
3.14.1 Anesthesia System Installation Checklist ....................................................... 3-39
3.15 Electric Safety Test...................................................................................................... 3-40
3.15.1 Test on Auxiliary Electrical Outlet ................................................................. 3-40
3.15.2 Electrical Safety Inspection ............................................................................ 3-40
3.15.3 Electrical Safety Inspection Form .................................................................. 3-42
4 Calibration ........................................................................................................................ 4-1
4.1 Introduction ..................................................................................................................... 4-1
4.2 Warnings, Precautions, and Notes ................................................................................... 4-1
4.2.1 Warnings............................................................................................................. 4-1
4.2.2 Cautions ............................................................................................................. 4-1
3
4.2.3 Notes .................................................................................................................. 4-2
4.3 System Calibration .......................................................................................................... 4-2
4.3.1 Flow Calibration (User) ..................................................................................... 4-3
4.3.2 Flow Calibration (Factory) ................................................................................. 4-6
4.3.3 Pressure Calibration (Factory) ......................................................................... 4-28
4.3.4 Pressure and Flow Zeroing (Factory) ............................................................... 4-41
4.3.5 Electronic Flowmeter Zeroing (User) .............................................................. 4-44
4.3.6 O2 Sensor Calibration ...................................................................................... 4-46
4.3.7 External AG Calibration ................................................................................... 4-52
4.3.8 CO2 Module Calibration .................................................................................. 4-52
4.3.9 ORC Calibration............................................................................................... 4-53
4.3.10 High-Pressure Gas Cylinder Regulator Calibration ....................................... 4-58
5 Repair and Troubleshooting ............................................................................................ 5-1
5.1 Troubleshooting Guidelines ............................................................................................ 5-1
5.1.1 Identify Problems ............................................................................................... 5-1
5.1.2 Avoid Shorting Component Leads ..................................................................... 5-1
5.1.3 Use Proper Tools ................................................................................................ 5-1
5.1.4 Clean up the Repair Area ................................................................................... 5-1
5.2 Technical Alarms ............................................................................................................. 5-1
5.2.1 Startup Alarm Messages ..................................................................................... 5-2
5.2.2 CPU Board Runtime Alarms .............................................................................. 5-6
5.2.3 Power Board Runtime Alarms............................................................................ 5-6
5.2.4 Electronic Flowmeter Board Runtime Alarms ................................................... 5-7
5.2.5 VCM Runtime Alarms ..................................................................................... 5-10
5.2.6 External AG Module Runtime Alarms ............................................................. 5-14
5.2.7 BIS Module Runtime Alarms ........................................................................... 5-16
5.2.8 CO2 Module Runtime Alarms.......................................................................... 5-19
5.2.9 NMT Module Runtime Alarm .......................................................................... 5-21
5.3 Pneumatic System Problems ......................................................................................... 5-22
5.3.1 Tools for on-site Maintenance .......................................................................... 5-22
5.3.2 Gas Supplies and Drive Gas ............................................................................. 5-31
5.3.3 Anesthetic Gas Delivery System ...................................................................... 5-38
5.3.4 Breathing System ............................................................................................. 5-50
5.3.5 Tidal Volume .................................................................................................... 5-63
5.4 Sensor and Valve Related Failures ................................................................................ 5-65
5.4.1 Preparations before Using Diagnostic Tests ..................................................... 5-66
5.4.2 Zero Point Problems of Flow and Pressure Sensors ......................................... 5-66
5.4.3 Connections and Measurement Problems of the Flow Sensors........................ 5-67
5.4.4 Connections and Measurement Problems of the Pressure Sensors .................. 5-68
5.4.5 Opening State Problems of the Inspiratory Valve ............................................ 5-69
5.4.6 Opening State Problems of the PEEP Safety Valve.......................................... 5-69
5.4.7 Opening State Problems of the PEEP Valve ..................................................... 5-70
5.5 Hardware and Electrical Problems ................................................................................ 5-70
5.6 Software Upgrade and Software Function Activation ................................................... 5-72
5.6.1 1.6.1 Software Upgrade.................................................................................... 5-72
5.6.2 Software Function Activation........................................................................... 5-75
6 Repair and Disassembly .................................................................................................. 6-1
6.1 Prepare for Disassembly ................................................................................................. 6-1
6.1.1 Tools ................................................................................................................... 6-1
6.1.2 Preparations ........................................................................................................ 6-1
6.1.3 Bleed Gas Pressure ............................................................................................. 6-1
6.2 Disassemble the Assemblies ........................................................................................... 6-2
6.2.1 Disassemble the Internal Assemblies of the Machine Upper Half ..................... 6-2
6.2.2 Disassemble Hardware Box Assembly............................................................... 6-7
6.2.3 Disassemble the Work Surface ......................................................................... 6-17
4
6.2.4 Disassemble the Display Assembly.................................................................. 6-24
6.2.5 Remove the Module Rack Box Assembly ........................................................ 6-30
6.2.6 Remove the Module Rack Fan ......................................................................... 6-31
6.2.7 Remove the Instrument Panel Assembly .......................................................... 6-32
6.2.8 Remove the Auxiliary Gas Supply Assembly .................................................. 6-35
6.2.9 Remove the Circuit Arm Cover ........................................................................ 6-36
6.2.10 Remove the AGSS Assembly ......................................................................... 6-36
6.2.11 Remove the Built-in AG Module (when configured with AG module) ......... 6-37
6.2.12 Remove the AG Module Inlet Tube Assembly (when configured with AG
module) ..................................................................................................................... 6-38
6.2.13 Disassemble the Base Assembly .................................................................... 6-39
6.3 Disassemble the Breathing System ............................................................................... 6-44
6.3.1 Remove the O2 Sensor and O2 Cell Unit......................................................... 6-44
6.3.2 Remove the Breathing Tubes ........................................................................... 6-45
6.3.3 Remove the Flow Sensor ................................................................................. 6-46
6.3.4 Remove the Manual Bag .................................................................................. 6-47
6.3.5 Remove the Absorber Canister Assembly ........................................................ 6-47
6.3.6 Remove the CO2 Bypass Assembly ................................................................. 6-49
6.3.7 Remove the Circuit Main Body Assembly ....................................................... 6-50
6.3.8 Remove the Bellows Assembly ........................................................................ 6-50
6.3.9 Remove the Pop-off Valve Assembly ............................................................... 6-51
6.3.10 Remove the Expiratory/Inspiratory Check Valve Assembly .......................... 6-51
6.3.11 Remove the Water Collection Cup ................................................................. 6-52
6.3.12 Remove the Airway Pressure Gauge .............................................................. 6-53
6.3.13 Remove the Bag Arm Assembly .................................................................... 6-53
6.3.14 Remove the Upper Rear Cover Assembly and Lower Rear Cover Assembly 6-54
6.3.15 Remove the Upper Front Cover Assembly, Median Plate Assembly, and Lower
Front Cover Assembly............................................................................................... 6-55
6.3.16 Remove the Auto/Manual Switch Assembly .................................................. 6-57
6.3.17 Remove the APL Valve Assembly .................................................................. 6-58
7 Replacement Parts ........................................................................................................... 7-1
7.1 Introduction ..................................................................................................................... 7-1
7.2 Ordering Replaceable Parts ............................................................................................. 7-1
7.3 Diagrams and Tables ....................................................................................................... 7-2
7.3.1 A5 Structure ....................................................................................................... 7-2
7.3.2 A5 Upper Half .................................................................................................... 7-5
7.3.3 A5 Hardware Box ............................................................................................... 7-6
7.3.4 A5 Work Surface ................................................................................................ 7-7
7.3.5 A5 Patient Circuit Main Body ............................................................................ 7-8
7.3.6 A5 Pre-pak Absorber Canister Assembly ........................................................... 7-9
7.3.7 A5 Valve Assembly .......................................................................................... 7-10
7.3.8 A5 O2 Cell Assembly ........................................................................................7-11
7.3.9 A5 Display Assembly ....................................................................................... 7-12
7.3.10 A5 Display Assembly Main Body .................................................................. 7-13
7.3.11 A5 Vaporizer Manifold ................................................................................... 7-14
7.3.12 A5 Auxiliary Gas Outlet Assembly ................................................................ 7-15
7.3.13 Base Assembly ............................................................................................... 7-16
7.3.14 Cart Assembly ................................................................................................ 7-17
7.3.15 Other............................................................................................................... 7-17
7.3.16 Tubes .............................................................................................................. 7-18
7.3.17 O-ring ............................................................................................................. 7-19
A Test Items ......................................................................................................................... A-1
A.1 Post-Installation Test Items............................................................................................. A-1
A.2 Post-Maintenance Test Items ......................................................................................... A-2
A.3 Post-Repair Test Items.................................................................................................... A-3
5
FOR YOUR NOTES
6
1 Theory of Operation
1.1 Introduction
A5 is a compact, easy-to-use anesthetic delivery system. It transports anesthetic gas which is
produced and controlled by the configured vaporizer, supports manual ventilation and multiple
automatic vent modes, and monitors various parameters such as patient’s airway pressure,
inspiratory tidal volume, and expiratory tidal volume in real time.
A5 is configured with the following vent modes:
 Volume Control Ventilation (VCV) with the Pressure Limit Ventilation (PLV) function
 Pressure Control Ventilation (PCV) with/without volume guarantee (VG) ventilation mode
 Synchronized Intermittent Mandatory Ventilation (SIMV) with VC mode
 Synchronized Intermittent Mandatory Ventilation (SIMV) with PC mode
 Pressure Support (PS) ventilation mode
 Spontaneous mode in manual mode with APL fully open
 Manual vent mode using manual bag.
Electronic PEEP is available in all mechanical modes. The user can control inspiratory flow
(Tslope) in PCV, SIMV and PS modes. The function of automatic fresh gas compensation
reduces the effect upon patient ventilation due to change of fresh gas flow by the operator. The
traditional bellows system is driven by gas, allowing the operator to view ventilation clearly.
A5 fresh gas electronic flowmeter system makes the traditional anesthesia system easier to use
and offers the characteristics of traditional anesthesia system as well. Dual-tube electronic
flowmeter displays readings more precisely. A knob guard prevents inadvertent movement of the
flow control knobs. Supply gas pressure gauges indicate the realtime pressures of pipeline supply
gas and cylinder gas. The auxiliary O2 supply is conveniently located in the upper left. The O2
flush button is in the traditional location near the front left corner of the work surface.
The safety system of A5 prevents low-O2 mixed gas from entering the patient. The system
delivers N2O only when O2 pressure is present. The mechanical safety system ORC ensures 21%
of O2 in the mixed gas.
The patient breathing circuit heating system of A5 minimizes water condensation and delivers
gas back to the patient. The pressure gauge, APL valve, and manual bag in the breathing circuit
can be plugged quickly for the convenience of installation and maintenance. A rotary knob on the
APL valve provides clear view of setting value. The sodalime absorber canister assembly can be
quickly opened and closed via a handle. It can use standard Pre-pak or loose fill sodalime
absorbent. The sodalime absorber canister assembly also provides a drain valve.
Two flow sensors are configured in the patient breathing circuit to monitor inspiratory/expiratory
gas flow and airway pressure. The O2 cell monitors FiO2. The patient breathing circuit can be
rotated and fixed as required by the operator. Besides, a test plug is available in the circuit to do
leak test. The anesthetic gas scavenging system (AGSS) connector is located at the back of A5.
1-1
When external AC power is connected, A5 power system powers the main system and charges
the internal batteries as well. In case of AC power failure, A5 is powered by batteries. The two
new batteries can provide power supply for at least 150 minutes. The system power can be turned
on and off by the main system switch. The four auxiliary electrical outlets of A5 are located at
the back of the machine and are independent of the main switch position.
Note: The heater in the patient breathing circuit is disabled when A5 is battery powered.
Note: O2 output is cut off if the main switch is in OFF position.
1-2
1.2 Electrical and Pneumatic Connections
1.2.1 Electrical Connection
1-3
No.
Description
P/N
B1
B2
B3
B4
B5
B6
B7
B8
B9,
B11
B13
Power board
Battery adapter board
Mother board
Alarm light board
Indicator light board
Touchscreen control board
Display adapter board
Main control board
801-0631-00025-00
801-0631-00109-00
801-0631-00108-00
801-0631-00019-00
801-0631-00004-00
801-0631-00018-00
801-0631-00017-00
115-035003-00
Monitoring module
115-051206-00
Top light board
Electronic flowmeter board
Electronic flow sensor adapter board
Auxiliary gas supply flowmeter backlight board
Filter
Breaker (5.0A)
Brazilian-standard auxiliary electrical outlet
British-standard auxiliary electrical outlet
B-specification 220V auxiliary electrical outlet and
connection line
Australian-standard auxiliary electrical outlet
Indian-standard auxiliary electrical outlet
European-standard auxiliary electrical outlet
Big South African auxiliary electrical outlet
Breaker (3.0A)
Lithium battery
Speaker
Fan
Touchpad
Expiration valve assembly
Display replacement material package
Circuit heater
Three-way valve assembly
Touchscreen
Module rack fan
Module rack assembly
801-0631-00039-00
051-002834-00
115-044851-00
801-0631-00002-00
801-0631-00029-00
801-0631-00130-00
008-000229-00
008-000027-00
B14
B15
P1
P2
P3-6
P7-10
P11-12
P13
P14
P15
P16
P17
P18
P19
P21
P22
P23
1-4
009-002044-00
M39-000207--008-000060-00
M39-000208--008-000487-00
801-0631-00031-00
115-062081-00
801-0631-00038-00
801-0631-00028-00
801-0631-00052-00
115-036693-00
115-036373-00
115-034450-00
801-0631-00046-00
801-0631-00014-00
024-000407-00
115-016480-00
1.2.2 Pneumatic Connection
1-5
1-6
1-7
Note: The materials listed in the table are not sold separately. Please consult the engineers if any
questions.
No.
From
To
P/N
25
Total flowmeter
Vaporizer manifold
assembly
M6G-020045---
26
Back pressure valve assembly
Total flowmeter
30
ORC assembly
31
ORC assembly
Pneumatic resistor block
assembly
Pneumatic resistor block
assembly
Air flow sensor
33
ORC assembly
Y2
Y1
34
N2O cylinder yoke assembly
N2O large cylinder supply
inlet assembly
30
35
Y1
36
Air cylinder yoke assembly
37
O2 flow sensor
M6G-020045--M6G-020026--M6G-020026--M6G-020026--M6G-020026---
Y1
Pressure regulator
assembly
M6G-020045--M6G-020045--M6G-020045---
Y1
Y1
Pressure regulator
assembly
M6G-020045--M6G-020045---
38
Y1
Y1
M6G-020046---
39
O2 pipeline pressure gauge
O2 supply inlet assembly
M6G-020046---
40
N2O pipeline pressure gauge
N2O supply inlet assembly
M6G-020046---
41
Air pipeline pressure gauge
Air supply inlet assembly
M6G-020026---
42
Pressure regulator assembly
Y2
M6G-020026---
43
Y2
System switch
M6G-020026---
44
Y2
O2 flush assembly
M6G-020026---
45
System switch
O2 needle valve assembly
M6G-020026---
46
Y2
M6G-020045---
47
Y1
ORC assembly
Pressure regulator
assembly
M6G-020046---
48
Pressure regulator assembly
ORC assembly
M6G-020026---
49
ORC assembly
N2O needle valve assembly
M6G-020026---
50
Pressure regulator assembly
Y2
M6G-020026---
51
Y2
M6G-020026---
54
Air supply inlet assembly
Air needle valve assembly
ACGO assembly or CGO
assembly
ACGO assembly or CGO
assembly
Y1 or pressure regulator
assembly
55
Expiration valve assembly
Gas reservoir assembly
M6G-020026---
56
Y2
Y2
M6G-020026---
57
Y2
M6G-020026---
58
Electronic flowmeter
Auxiliary O2 supply
Back pressure valve
assembly
52
53
O2 flush assembly
Vaporizer manifold assembly
1-8
M6G-020026--M6G-020045--M6G-020045---
M6G-020045---
No.
From
To
P/N
59
O2 supply inlet assembly
Y1
M6G-020045---
O2 cylinder yoke assembly
O2 large cylinder supply inlet
assembly
Y1
60
61
Y1
62
M6G-020045--Y1
M6G-020045---
N2O supply inlet assembly
Y1
Y1 or pressure regulator
assembly
63
Y1
Expiration valve assembly
M6G-020045---
64
Auxiliary Air supply
Y2
M6G-020026---
65
Auxiliary O2 supply
Y2
M6G-020026---
66
Y2
Auxiliary gas outlet
M6G-020026---
67
Y2
Auxiliary Air supply
M6G-020026---
69
Y1
Auxiliary gas outlet
M6G-020045---
73
O2 needle valve assembly
Y2
M6G-020026---
74
Y2
Y2
M6G-020026---
75
Poppet valve assembly
Y2
M6G-020026---
76
Poppet valve assembly
Y2
M6G-020026---
77
Poppet valve assembly
Y2
M6G-020026---
78
Y2
O2 flow sensor
M6G-020026---
79
Y1
O2 supply inlet assembly
M6G-020045---
81
Y1
Y1
M6G-020045---
83
N2O large cylinder supply
inlet assembly
N2O supply pressure gauge
M6G-020026---
85
O2 large cylinder supply inlet
assembly
O2 supply pressure gauge
M6G-020026---
90
Air needle valve assembly
Pneumatic resistor block
assembly
M6G-020026---
90
Air needle valve assembly
Air flow sensor
M6G-020026---
91
N2O needle valve assembly
M6Q-030025---
91
O2 needle valve assembly
N2O flow sensor
Pneumatic resistor block
assembly
M6Q-030024---
92
Y1
Y1
M6G-020045---
93
Y1
Expiration valve assembly
M6G-020045---
Y1
Φ8 three-way connector
M6Q-030025---
Y2
Φ6 three-way connector
M6Q-030024---
1-9
M6G-020045---
1.2.3 Connections between Pneumatic Circuit, Breathing
System and Ventilator Control Board
1-10
Note: The materials listed in the table are sold separately. Please consult the engineers if any
questions.
No.
From
To
P/N
1
Expiration valve assembly
A21-000007---
2
Expiration valve assembly
Monitoring board connector
Hardware box tube
connector
A21-000007---
3
Expiration valve assembly
Monitoring board connector
A21-000007---
4
Three-way valve
Monitoring board connector
A21-000007---
5
Three-way valve
Y2
A21-000007---
6
Three-way valve
Monitoring board connector
A21-000007---
7
Y2
Y2
Monitoring board connector
A21-000007--A21-000007--A21-000007--A21-000007--M6G-020046---
8
9
10
11
Y2
Hardware box tube connector
Y1
Monitoring board connector
Monitoring board connector
Y1
Circuit adapter block
12
Hardware box tube connector
Y1
A21-000007---
13
Y1
Circuit adapter block
M6G-020046---
14
15
Hardware box tube connector
Y1
Y1
Circuit adapter block
A21-000007--M6G-020046---
16
Hardware box tube connector
Y1
A21-000007---
17
Y1
Circuit adapter block
M6G-020046---
18
Expiration valve assembly
M6G-020018---
ACGO assembly
Gas reservoir assembly
Circuit adapter block
ACGO assembly
ACGO separate outlet
ACGO assembly
Circuit adapter block
Common gas outlet
Circuit adapter block
23
Circuit adapter block
Expiration valve assembly
115-034137-00
24
Circuit adapter block
Hardware box tube connector or
three-way connector
Gas reservoir assembly
115-027258-00
Monitoring board connector
A21-000007---
72
Three-way valve
Monitoring board connector
80
Hardware box tube connector
Three-way valve
A21-000007---
82
Hardware box tube connector
Three-way valve
A21-000007---
84
Hardware box tube connector
Three-way valve
A21-000007---
86
Hardware box tube connector
Y2
A21-000007---
88
Y2
A21-000007---
94
Y1
Three-way valve
Hardware box tube
connector
95
ACGO separate outlet
Y1
96
Hardware box tube connector
Three-way valve
M6G-020046--A21-000007---
98
Hardware box tube connector
Three-way valve
A21-000007---
116
Waste gas scavenging connector
CPC connector
M6G-020005---
127
AG calculation module
Plug
9200-10-10556
128
AG calculation module
AG calculation module
9200-10-10556
21
22
1-11
082-000519-00
082-000519-00
A21-000007---
129
ACGO assembly(with AG)
9200-10-10557
115-015829-00
M6G-020046---
130
AG calculation module
FittingΦ4
141
Gas reservoir assembly
143
ACGO assembly(with AG)
AG calculation module
Waste gas scavenging
connector
FittingΦ4
156
Y1
Y1
Y1
Two-way connector
M90-100027---
Y2
Three-way connector
M90-100030---
1-12
M6G-020018--082-001198-00
1.3 Pneumatic Circuit
1.3.1 Pneumatic Circuit Diagram
1-13
1.3.2 Parts List
Several parts are sorted according to the design scheme of production systems. The whole
pneumatic diagram is shown below:
1
O2 pipeline supply connector
32
Sodalime canister
2
3
4
5
6
7
8
9
O2 cylinder supply connector
N2O pipeline supply connector
N2O cylinder supply connector
Air pipeline supply connector
Air cylinder supply connector
Cylinder pressure regulator(400kPa)
Pressure relief valve(758kPa)
Drive gas inlet filter
33
34
35
36
37
38
39
40
Bypass
O2 sensor
Paw gauge
Inspiratory flow sensor
Patient connector
Expiratory flow sensor
Water collection cup
Expiratory check valve
10
11
12
13
14
Pneumatic block pressure
regulator(200kPa)
Inspiratory flow control valve
Flow sensor
Pneumatic block pressure relief
valve(110cmH2O)
Pop-Off valve
Auto/Manual switch
42
Manual bag
43
APL valve
High-pressure O2 output
44
45
Bellows
16
17
18
19
20
21
22
23
24
Drive gas pressure switch(140kPa)
Proportional PEEP valve
Expiration valve
Pneumatic block resistor
O2 flush button
Flow restrictor
Gas supply pressure switch(220kPa)
Pressure regulator(200kPa)
System switch
47
48
49
50
51
52
53
54
55
Mechanical pressure relief
valve(1kPa,10cmH2O)
Negative check valve(1cmH2O)
Gas reservoir 2
Pressure sensor
Total flowmeter
Auxiliary O2 supply
Negative pressure valve
Pressure sensor
AGSS
Check valve2
25
26
27
28
29
30
31
/
ORC
Electronic flow sensor
Dual-vaporizer manifold
Check valve3
Pressure relief valve(37.9kPa)
Auxiliary Air supply
Inspiratory check valve
/
56
57
58
59
60
61
62
63
Back pressure valve
Poppet valve
Needle valve
Pneumatic resistor
ACGO
ACGO separate outlet
O2 supply three-way connector
N2O pneumatic resistor of ORC
15
PEEP safety valve
41
46
1-14
1.3.3 Key to Symbols
Filter
Pressure regulator
Pressure gauge
Check valve
Gas supply connector
Pressure relief valve
Flowmeter
Flow control valve
Pressure switch
Flow restrictor
1.3.4 Descriptions
1.3.4.1 Anesthetic Gas Delivery System
The anesthetic gas delivery system is connected to gas source, anesthetic gas delivery device
(vaporizer), and breathing system. Its inputs are N2O, O2, and Air from the respective gas supply
assembly. Its outputs include mixed gas of these three gases and anesthetic agent (namely, fresh
gas), pure O2 (high-pressure O2 output, auxiliary O2, flushing O2), and mixed gas of Air and O2.
The pneumatic circuit of anesthetic gas delivery system is as shown below.
Drive gas
Fresh gas
The following picture shows how the gas supply system is connected. O2 is divided into four
limbs, which are system switch(24), O2 flush valve(20), auxiliary O2 supply(51), and highpressure O2 exhaust port(44). Air goes to two limbs. One is to needle valve(58) and the other to
auxiliary Air supply(30). N2O goes to ORC(25) directly.
When system switch(24) is turned on, O2 enters needle valve(58). When O2 flow is greater than
300ml, N2O can enter ORC(25) through needle valve(58). After passing through needle
valve(58), pre-set ORC O2 pneumatic resistor(59) and ORC N2O pneumatic resistor(63) control
the ratio of O2 and N2O and ensure the minimum O2 concentration.
1-15
To auxiliary
Air supply
25. ORC
N2O tube
ORC N2O
pneumatic
resistor
ORC O2
pneumatic
resistor
Needle valve
Air tube
O2 tube
To auxiliary O2
supply
24. System
switch
To high-pressure
O2 output port
60. ACGO
20. O2 flush
valve
1-16
O2 and N2O enter electronic flow sensor (26) after passing through the ORC O2 pneumatic
resistor (59) and ORC N2O pneumatic resistor (63) respectively. Air enters electronic flow
sensor(26) after passing through needle valve(58) and the electronic flowmeter monitors and
displays the gas flow.
56. Back pressure
valve
26. Flow sensor
50. Total flowmeter
The converged gas goes from float flowmeter(50) to anesthetic gas delivery device (vaporizer),
forming fresh gas after mixing with anesthetic agent. The fresh gas then goes from check
valve(28) through CGO(29) assembly to the breathing system. The flushing O2 also enters the
breathing system through the CGO(29) assembly.
28. Check valve
Outlet of anesthetic
gas delivery device
1-17
Inlet of anesthetic gas
delivery device
Gas Supply
8. Pressure relief valve
22. Pressure switch
Inlet of O2 pipeline
supply
Pressure sampling tube of O2
supply gas pressure gauge
The above picture shows the O2 pipeline supply assembly. The pneumatic circuit of the gas
source is the starting point of the pneumatic circuit of the anesthesia machine, which functions to
introduce the external pipeline gas or cylinder gas into the machine. Since the pressure of
external gas is generally very high and the external gas contains foreign substance, there is
pressure reducing valves, filters and pressure relief valves available in the supply gas circuit.
Also, check valves are available in the supply gas circuit to prevent gas from flowing back into
the pipeline or cylinder. The anesthesia machine has three pipeline gas supplies available: O2,
N2O, and Air. They enter the “Pipeline gas supply inlet assembly” of the anesthesia machine
through pipeline gas supply connectors 1, 3 and 5 respectively. Generally, the pipeline gas
pressure is 280～600kPa. The anesthesia machine has three cylinder gas supplies available: O2,
Air and N2O. They enter the system through cylinder gas supply connectors 2, 4 and 6
respectively. Their working pressure ranges 6.9～15.5Mpa, 6.9～15.5Mpa and 4.2～6Mpa
respectively, which are reduced to around 440kPa through pressure regulator(7). Each connector
is clearly marked and designed to prevent misconnection. All connectors have filters and check
valves. Color coded pressure gauges show the pipeline and cylinder pressures. Pressure relief
valve(8) functions to prevent the supply gas pressure from being too high. It releases excess gas
when gas pressure exceeds 758kPa. Each supply gas is outputted after gas pressure is reduced to
200kPa through pressure regulator(24). Pressure switch(23) monitors the O2 supply pressure.
When O2 supply pressure is less than around 200kPa, the ventilator gives the alarm of O2 supply
failure.
1-18
System Switch Assembly
O2 goes into system switch(24) and then to the needle valve. System switch is configured with a
socket to manage the power-on status of the system. When the system switch is turned on, O2
enter the needle valve and the system is powered on simultaneously. The anesthetic ventilator
starts to monitor the system status. When the system switch is turned off, O2 cannot enter the
needle valve and the system is powered off.
Flow Adjustment and Control Assembly
58. Flow adjustment needle
valve
Needle valve(58) controls gas flow. ORC(25) controls the ratio of O2 and N2O to ensure that O2
concentration is not less than 25%. Turning needle valve knob counterclockwise increases the
flow and clockwise decreases the flow.
1-19
Flow Display Assembly
The flow display assembly is made up of electronic flowmeter(26) and total flowmeter(50). Its
outputs are gas from the flow adjustment and control assembly and mixed gas going through the
anesthetic gas delivery device (vaporizer). Electronicflowmeter(26) measures and displays the
flow of each gas. Total flowmeter(50) displays the total gas flow.
26. Flow sensor
50. Total flowmeter
O2 Flush Button Assembly
The above picture shows the O2 flush button assembly. When O2 flush valve(20) is depressed,
O2 flow rushes to the pneumatic circuit, which is cut off when this valve is released. Its input is
O2 of 0.2MPa, which comes from O2 supply gas and is regulated. Its output is O2 which flows
through the ACGO assembly and enters the breathing system. The O2 flush button assembly is
not controlled by the system switch. O2 flushing can be performed as long as O2 supply is
normal. The O2 flush button assembly has sliding valve structure inside, which ensures
automatic reset via the spring each time the valve is depressed and released.
1-20
Vaporizer Manifold
The above picture shows the vaporizer manifold assembly. The anesthetic gas delivery device
(vaporizer) is connected to the anesthetic gas delivery system. The mixed gas of N2O, O2 and
Air go into the device; and the fresh gas containing these three gases and anesthetic agent is
finally outputted to the ACGO assembly.
Dual-vaporizer manifold (27) is integrated with check valve(28) to prevent flushing O2 and fresh
gas from flowing back to the vaporizer, so as to affect the concentration of outputted anesthetic
gas. When using dual-vaporizer manifold, Selectatec mounting with interlocking function can
prevent the user from turning on two vaporizers simultaneously.
Triple-vaporizer manifold is provided for optional configuration.
Gas inlet
Gas outlet
Check valve
Three canisters
position
The above picture shows the triple-vaporizer manifold assembly. The anesthetic gas delivery
device (vaporizer) is connected to the anesthetic gas delivery system. The mixed gas of N2O, O2
and Air go into the device; and the fresh gas containing these three gases and anesthetic agent is
finally outputted to the ACGO assembly.
1-21
Triple-vaporizer manifold is integrated with the check valve to prevent flushing O2 and fresh gas
from flowing back to the vaporizer, so as to affect the concentration of outputted anesthetic gas.
When using triple-vaporizer manifold, Selectatec mounting with interlocking function can
prevent the user from turning on two vaporizers simultaneously.
ACGO Assembly
The above picture shows the ACGO assembly. This assembly contains flow restrictor(21),
pressure relief valve(29), and pressure relief valve(13). The delivered O2 enters ACGO after
mixing with the fresh gas. Pressure relief valve(29) in the front restricts the pressure of delivered
O2 and prevents the pressure of fresh gas from exceeding 37.9kPa. Pressure relief valve(13)
prevents the pressure of gas coming out of the ACGO from exceeding 12.5kPa (ACGO has two
types of configuration: separate outlet and breathing system outlet).
CGO Assembly
The following picture shows the pressure relief valve (29) and flow restrictor (21) of CGO
module.
1-22
Auxiliary O2/Air Supply Assembly
Auxiliary O2 supply assembly(51) and auxiliary Air supply assembly(30) control flows by the
needle valve. Gas is displayed by a glass tube flowmeter and delivered to the patient. The gas
flow can be adjusted within the range of 0 to 15L/min. Turning the flow control
counterclockwise increases the flow and clockwise decreases the flow.
High- pressure O2 Output Assembly
The high-pressure O2 output assembly is directly connected to the O2 supply inlet assembly. It
can be used for the external ventilation device (jet ventilation device) without going through
pressure regulator. When no external device is connected, the high-pressure O2 output is closed.
The maximum output flow is 90L/min.
Auxiliary gas supply output
High-pressure O2 output
1-23
1.3.4.2 Anesthetic Ventilator Pneumatically-controlled Module
The anesthetic ventilator pneumatically-controlled module provides drive force for the patient’s
breathing process. Its input is O2 (or Air) from the gas supply inlet assembly. Its outputs include
drive gas to the breathing system and PEEP exhaust gas to the built-in gas reservoir and muffling
part. The ventilator can control the drive gas flow to realize various vent modes and prevent too
high pressure inside the pneumatic circuit from injuring the patient. The following picture shows
the gas flow directions and components of the anesthetic ventilator pneumatically-controlled
module.
Pneumaticallycontrolled module
Output gas
discharged through
PEEP outlet
Input tube of the
pneumaticallycontrolled module
Exhaust tube
Output drive gas
The pneumatic circuit of the anesthetic ventilator pneumatically-controlled module is as shown
below:
45
52
Drive gas
9
10
11
12
Drive Gas
13
14
Flow
Breathing
Breathing
system System
46
18
AGSS
15
17
16
1-24
P
49
19
Filter(9) filters the drive gas. Pressure regulator(10) adjusts the pressure in the pneumatic circuit
(about 0.2MPa). Proportional solenoid valve(11) controls gas entering flow. Differential pressure
flow sensor(12) monitors gas flow in the drive gas circuit. Mechanical overpressure valve(13)
ensures that the pressure in the drive gas circuit does not exceed safe pressure. It releases excess
gas when gas pressure exceeds 11kPa (110cmH2O). “18” is expiration valve. During expiration,
gas inside the bellows is discharged from this valve.
PEEP function is implemented through expiration valve control limb. “15” is low-flow
proportional solenoid valve. When it opens, gas is discharged from pneumatic resistor(19),
forming relatively stable pressure in the pneumatic circuit between “15” and “19”. Such pressure
is exerted onto the membrane of expiration valve(18) to form PEEP.
To prevent too high pressure in the pneumatic circuit from injuring the patient and damaging the
equipment, safety valve(15), which is a solenoid on-off valve, is necessary to be placed before
the expiration valve control limb. “16” is a pressure switch. When drive gas pressure is less than
125kPa, an alarm is triggered. “49” is a pressure sensor which monitors the expiration valve
closing pressure. Pressure relief valve(46) ensures that the tube pressure after the expiration
valve is less than 10cmH2O during expiration phase.
1.3.4.3 Breathing System
The breathing system provides a closed loop for the anesthetic gas. CO2 in the patinet’s expired
gas can be absorbed in the inspiration phase, so as to maintain the gas temperature and humidity
conditions. During inspiration, the drive gas compresses the bellows to force the gas to enter the
patient’s lungs. During expiration, the patient’s pulmonary gas enters the bellows again through
the chest muscular contractions. Sodalime absorber canister(32) in the circuit absorbs the
patient’s expired CO2. The pneumatic circuit of the breathing system is as shown below.
43
45
41
AGSS
NO
NC
42
Drive
Drive
gas
Gas
14
38
gas
Flowflow
40
33
32
39
33
37
53
P
31
Flow
gas
36
O2
34
1-25
35
Manual ventilation and mechanical ventilation are selected through the Auto/Manual switch.
When manual ventilation is selected, the doctor presses the manual bag(42), replacing
mechanical ventilation, to provide gas for the breathing system. APL valve(43) adjusts the
pressure in the pneumatic circuit in manual ventilation mode. When mechanical ventilation is
selected, the ventilator starts to work, driving the drive gas to compress the bellows inside the
bellows housing(45) and providing gas for the breathing system based on the selected vent mode.
The breathing system is connected to the anesthesia machine main unit through the circuit
adapter. The breathing system is highly integrated. Its tubes are all built-in except the tubes
connected to the patient and to the O2 cell cable, as shown below.
41. Auto/Manual
switch
45. Bellows
assembly
43. APL valve
Bag arm
40. Expiration
valve
35. Paw gauge
1-26
31.
Inspiration
Patient connection (built-in inspiratory and
expiratory flow sensors)
33. Built-in bypass valve
32. CO2 absorber canister
Operating handle
In mechanical ventilation mode, during inspiration, the gas flows through Auto/Manual
switch(41), BYPASS valve(33) or sodalime canister(32), inspiration valve(31), O2 sensor(34),
Paw gauge(35), and inspiratory flow sensor(36) to the patient. During expiration, the gas flows
through expiratory flow sensor(38), expiration valve(40), and Auto/Manual switch(41) to the
bellows. The airway pressure is monitored by pressure sensor(53).
The water produced by condensation is accumulated in the water collection cup at the bottom of
the breathing system.
The breathing system is conveniently disassembled and is autoclavable at 134℃.
1.3.4.4 Anesthetic Gas Scavenging System
The anesthetic gas scavenging system (AGSS) is composed of AGSS transfer system, AGSS
receiving system, and AGSS disposal system. Waste gas goes from the exhaust port of the
anesthesia machine, through the AGSS transfer system and the AGSS receiving system, and to
the hospital’s waste gas disposal system (AGSS disposal system), as shown below.
Waste gas
AGSS
transfer
system
AGSS
receiving
system
AGSS
disposal
system
(hospital’s disposal
system）
1-27
The following figure shows the operational theory of the AGSS. The throttling holes reduce the
effect of negative pressure at the AGSS outlet upon the flow at the entrance. The float helps the
user to determine if the disposal system meets the minimum extract rate requirement. The filter
filters foreign substance to prevent the disposal system from being occluded. The gas storage
device is connected to the external air through pressure compensation openings. When there is
positive or negative pressure inside the gas storage device, gas is inputted or outputted to ensure
pressure balance inside the system.
The both ends of the AGSS transfer tube are 30mm conical connectors. The inlet is female 30mm
conical connector and the outlet is male 30mm conical connector. The transfer tube is connected
to the AGSS main body through 30mm connector. The following picture shows the structure of
AGSS and how the AGSS transfer system, receiving system, and disposal system are connected.
Receiving system
Transfer system
The AGSS three-way connector assembly used for exhausting the open circuit waste gas is also
provided for optional configuration.
1-28
Transfer system
Negative pressure
supply provided by
other hospital
Blocked at ordinary
time. But Connect to the
outlet of open circuit
waste gas once the open
circuit is initiated.
Receiver system
1.4 Components of the Anesthesia System
1.4.1 Auxiliary Electrical Outlets
A5 anesthesia system has 4 auxiliary electrical outlets (3 for big South African standard). Each
outlet has one 250V3A breaker. Besides, the total breaker restricts the total current of the 4
outlets to 5A.
Aux.
electrical outlet1
Aux.Auxiliary
electrical
Auxiliary Outlet 1
Outlet 2
l 2
Breaker 1
Breaker
Breaker 2
Breaker
Aux.
electrical
Auxiliary Outlet 3
l
Breaker 3
Breaker
1-29
Aux.
electrical outlet4
Auxiliary Outlet 4
Breaker 4
Breaker
1.4.2 Lighting Board
1.4.2.1 Top Light Board
Top light board (Top view)
Top light board (Bottom view)
Auxiliary gas supply flowmeter backlight board interface, J1
Pin
Name
Function
1
12V
2
3
4
GND
GND
LIGHT_OUT
Auxiliary gas supply flowmeter backlight
board 12V power supply
Grounding
Grounding
Auxiliary gas supply flowmeter backlight
control
Top light switch interface, J2
Pin
Name
Function
1
2
3
4
5
6
HIGH_BRIGHTNESS
HIGH_BRIGHTNESS
OFF
OFF
LOW_BRIGHTNESS
LOW_BRIGHTNESS
High brightness
High brightness
Off
Off
Low brightness
Low brightness
Power supply interface, J3
Pin
Name
Function
1
2
3
12V
GND
12V_AUX
Top light board 12V power supply
Grounding
Auxiliary gas supply flowmeter backlight
board 12V power supply
1-30
1.4.2.2 Auxiliary Gas Supply Flowmeter Backlight Board
Auxiliary gas supply flowmeter backlight board (Top view)
Auxiliary gas supply flowmeter backlight board (Bottom view)
Auxiliary gas supply flowmeter backlight board interface, J1
Pin
Name
Function
1
12V
2
3
4
GND
GND
LIGHT_IN
Auxiliary gas supply flowmeter backlight
board 12V power supply
Grounding
Grounding
Auxiliary gas supply flowmeter backlight
control signal
1-31
1.5 Breathing System
1.5.1 Introduction
A5 breathing system supports three types of operating modes: mechanical ventilation, manual
ventilation, and standby, allowing the operator to apply proper ventilation strategy based on the
patient’s needs.
The types of flow path through the breathing system vary with the operating mode or status.
1.5.2 Mechanical Mode, Inspiration
When the Auto/Manual switch is set to Auto position, the system closes the manual ventilation
path. The drive gas depresses the bellows inside the bellows housing. Gas flows out of the
bellows, through the CO2 canister and inspiratory check valve, and to the patient.
During inspiration, the fresh gas flows into the inspiratory limb, upstream of the inspiratory
check valve.
In volume mode, tidal volume is compensated for variation in gas flow, to ensure that the tidal
volume delivered to the patient complies with the setting value.
In pressure mode, the inspiratory pressure is adjusted by adjusting the gas flow and airway
pressure, to ensure that the airway pressure is held at the set inspiratory pressure level during the
patient’s inspiration.
APL Valve
Drive Gas
Pop-Off
valve
NO
NC
Breathing Bag
Auto/Manu
Switch
Bellows
Exhaust
valve
AGSS
Exp.
Valve
Exp. Flow
Sensor
Water
collecti
on cup
Water
trap
cup
Absorber
Canister
Insp.
Valve
Insp. Flow
Sensor
Fresh Gas
O2
Cell
1-32
1.5.3 Mechanical Mode, Expiration
When the Auto/Manual switch is set to Auto position, the system closes the manual ventilation
path.
The drive gas flow stops and the expiration valve opens. The patient expires gas. The expired gas
flows through the expiratory check valve and into the bellows.
Residual drive gas flows out of the bellows housing through the exhaust valve to the scavenging
system (AGSS).
If PEEP setting is selected, the pressure at the exhaust valve port is held at the PEEP level.
During expiration, the fresh gas flows backwards through the CO2 canister into the
expiratory limb, downstream of the expiratory check valve.
APL Valve
Drive Gas
Pop-Off
valve
NO
NC
Breathing Bag
Auto/Manu
Switch
Bellows
Exhaust
valve
AGSS
Exp.
Valve
Exp. Flow
Sensor
Water
collecti
on cup
Water
trap
cup
Absorber
Canister
Insp.
Valve
Insp. Flow
Sensor
Fresh Gas
O2
Cell
1-33
1.5.4 Manual Mode, Inspiration
When the Auto/Manual switch is set to Manual position, the system closes the mechanical
ventilation path.
When the manual bag is depressed, the gas flows out of the manual bag through the CO2 canister
into the breathing circuit, and through inspiratory check valve to the patient’s lungs.
During inspiration, the fresh gas flows from the machine into the inspiratory limb, upstream of
the inspiratory check valve.
If the airway pressure exceeds the setting value of the APL Valve, the excess gas will pass
through the APL valve to the scavenging system (AGSS).
APL Valve
Auto/Manu
Switch
Bellows
Breathing Bag
Pop-Off
valve
NO
NC
Exhaust
valve
AGSS
Exp.
Valve
Exp. Flow
Sensor
Water
collecti
on cup
Water
trap
cup
Absorber
Canister
Fresh Gas
In
Insp.Ins
Valve
s
p.
O2
Cell
1-34
Insp. Flow
Sensor
1.5.5 Manual Mode, Expiration
When the Auto/Manual switch is set to Manual position, the system closes the mechanical
ventilation path.
The patient’s expired gas enters the manual bag after passing through the expiratory check valve.
During expiration, the fresh gas enters the breathing system. The residual fresh gas passes
through the APL valve to the scavenging system (AGSS).
.
APL Valve
Auto/Manu
Switch
Bellows
Exhaust
valve
Breathing Bag
Pop-Off
valve
NO
NC
AGSS
Exp.
Valve
Exp. Flow
Sensor
Water
trap
cup
Water
collecti
on cup
Absorber
Canister
Insp.
Valve
Insp. Flow
Sensor
Fresh Gas
O2
Cell
1.5.6 Pneumatic PEEP
Exhaust valve opening pressure decides PEEP. Therefore, if PEEP is selected, during Auto
ventilation, the ventilator adjusts exhaust valve opening pressure based on the set PEEP value.
1.5.7 Ventilator in Standby
If the anesthesia system is in standby mode, monitoring function is disabled and mechanical
ventilation is unavailable. When the system is standby, the patient can not be ventilated.
1.5.8 Components of the Breathing System
1.5.8.1 Ventilation Bellows Assembly
The ventilator’s drive system is drive gas. Drive gas inflates the space outside the bellows so as
to compress the bellows. The bellows press the gas into the patient’s breathing circuit. When the
patient expires, the bellows are re-inflated with gas.
1.5.8.2 Manual Bag
In manual mode, manual bag helps the user to ventilate the patient manually.
1-35
1.5.8.3 CO2 Canister
The sodalime inside the CO2 canister absorbs the CO2 in the expired gas. The CO2 canister can
be equipped with standard sized Pre-paks or loose-fill CO2 absorbent.
1.5.8.4 Inspiration Valve and Expiration Valve
To ensure correct gas flow direction to and from the patient’s lungs, check valves are integrated
into both the inspiratory and expiratory limb of the breathing system.
1.5.8.5 APL (Airway Pressure Limit) Valve
In manual mode, APL valve, as gas pressure relief valve, limits the airway pressure in the
breathing system.
1.6 User Interface
1.6.1 Display
1.6.1.1 Display Adapter Board
J1
J5
J2
20
2
19
1
Display adapter board (Top view)
Display adapter board (Bottom view)
1-36
J4
Inverter interface, J1
Pin
Name
Function
1
2
3
4
5
12V
12V
GND
GND
LCD_EN
Backlight control board 12V power supply
Backlight control board 12V power supply
Grounding
Grounding
LCD backlight switch
6
LCD_BR
LCD backlight brightness control
Alarm light board interface, J2
Pin
Name
Function
1
2
3
4
5
6
Alarm light board 12V power supply
Grounding
Main control board I2C data signal
Main control board I2C clock signal
3.3V power supply
Grounding
12V
GND
SDA_CPU
SCL_CPU
3_3V
GND
Touchscreen control board interface, J4
Pin
Name
Function
1
2
3
4
Pin
5V
RXD_TOUCH_PANEL
TXD_TOUCH_PANEL
GND
5V power supply
Touchscreen control board serial port receiving signal
Touchscreen control board serial port transmitting signal
Grounding
Display control signal interface, J5
Name
Function
1
2
3
4
LCD_EN
LCD_BR
RXD_TOUCH_PANEL
TXD_TOUCH_PANEL
5
6
7
8
9
10
11
12
13
14
15
16
17
18
GND
LED_AC
LED_BAT
SDA_CPU
SCL_CPU
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
12V
12V
GND
LCD backlight switch
LCD backlight brightness control
Touchscreen control board serial port receiving signal
Touchscreen control board serial port transmitting
signal
Grounding
AC indicator light drive signal
Battery indicator light drive signal
Main control board I2C signal
Main control board I2C signal
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
12V power supply
12V power supply
Grounding
1-37
Pin
Name
Function
19
20
GND
GND
Grounding
Grounding
1.6.1.2 Alarm Light Board
J1
Alarm light board (Top view)
Alarm light board (Bottom view)
Alarm light board interface, J1
Pin
Name
Function
1
2
3
4
5
12V power supply
Grounding
Main control board I2C data signal
Main control board I2C clock signal
3.3V power supply
12V
GND
MAIN_BRD_SDA
MAIN_BRD_SCL
3_3V
1-38
1.6.1.3 Display
A5 anesthesia machine has a 15-inch, 24-bit display color, 1024x768, LVDS display with
touchscreen of the same size. The backlight brightness of the display can be adjusted through the
inverter.
1.6.1.4 Electronic Flowmeter Board
Electronic flowmeter board (Top view)
Electronic flowmeter board (Bottom view)
1-39
Electronic flowmeter board interface, J2
Pin
Name
Function
1
2
3
4
5
6
DVCC
DVCC
GND
GND
DVDD
DVDD
Electronic flowmeter board 5 V power supply
Electronic flowmeter board 5 V power supply
Grounding
Grounding
Electronic flowmeter board 3.3 V power supply
Electronic flowmeter board 3.3 V power supply
7
8
9
10
11
12
13
14
15
16
17
18
19
20
SCL_AIR
SCL_O2
GND
GND
SDA_AIR
SDA_O2
/
/
DVCC
SCL_N20
GND
GND
DVDD
SDA_N20
II2C clock signal
II2C clock signal
Grounding
Grounding
II2C data signal
II2C data signal
Electronic flowmeter board 5 V power supply
II2C clock signal
Grounding
Grounding
Electronic flowmeter board 3.3 V power supply
II2C data signal
Electronic flowmeter board interface, J3
Pin
Name
Function
1
TXD_FLOW_BRD
2
3
4
RXD_FLOW_BRD
GND
12V
Electronic flowmeter board serial port transmitting
signal
Electronic flowmeter board serial port receiving signal
Grounding
Electronic flowmeter board 12V power supply (range:
10.8–13.2 V)
1.6.1.5 O2/N2O/Air Flow Sensor Transfer Board
Air
J1
O2/N2O/Air flow sensor transfer board (top view)
Flow sensor transfer board interface, J1
1-40
Pin
1
2
3
4
5
6
Name
VCC
GND
VDD
SCL
GND
SDA
Function
5 V power supply
Grounding
3.3 V power supply
Flow sensor IIC clock signal
Grounding
Flow sensor IIC data signal
Flow sensor transfer board interface, J2
Pin
Name
Function
1
VCC
5 V power supply
2
NC
Ais suspension
3
VDD
3.3 V power supply
4
GND
Grounding
5
SCL
Flow sensor IIC clock signal
6
GND
Grounding
7
SDA
Flow sensor IIC data signal
8
GND
Grounding
1.6.1.6 Indicator Light Board
J1
Indicator light board (Top view)
1-41
Indicator light board (Bottom view)
Indicator light board interface, J1
Pin
Name
Function
1
2
3
AC indicator light drive signal
Battery indicator light drive signal
Grounding
LED_AC
LED_BAT
GND
1.6.2 Main Control Board
J8
J4
J9
Main control board (Top view)
1-42
Main control board (Bottom view)
Network interface, J9
Pin
Name
Function
1
2
3
4
5
6
7
8
TX+
TXRX+
CT1
CT1
RXCT2
CT2
Positive end of transmitting signal
Negative end of transmitting signal
Positive end of receiving signal
Not specified
Not specified
Negative end of receiving signal
Not specified
Not specified
USB interface, J8
Pin
Name
Function
1
2
3
4
5
6
7
8
USB power supply
USB data signal – (negative)
USBdata signal + (positive)
Grounding
USB power supply
USB data signal – (negative)
USB data signal + (positive)
Grounding
VCC
DM0
DP0
GND
VCC
DM1
DP1
GND
RS-232 interface, J4
Pin
Name
Function
1
Not connected
NC
1-43
2
3
4
5
6
7
8
9
RXD
TXD
NC
GND
NC
NC
NC
NC
RS-232 receiving signal
RS-232 transmitting signal
Not connected
Grounding
Not connected
Not connected
Not connected
Not connected
1.7 Ventilation Control and Drive
1.7.1 Motherboard
J7 J12 J13
J10
J1 J8 J9
1
5
J11
4
8
2
1
1 2
65
33
1
49 50
J5
Motherboard (Top view)
1-44
34
18
1
50
33
17
37
19
20
1
25
13
14
1
J4
J3
J2
Motherboard (Bottom view)
Monitoring module interface, J1
Pin
Name
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Safety valve drive signal
Inspiration valve drive signal
Inspiration valve drive signal
PEEP valve drive signal
PEEP valve drive signal
Three-way valve 1
Three-way valve 2
Three-way valve 3
Three-way valve 4
Pneumatic block pressure switch signal
Not connected
Not connected
Gas supply inlet O2 pressure switch signal
Auto/Manual switch signal
Grounding
CO2 canister in-position signal
O2 concentration signal
O2 concentration signal
SAFE_VALVE
7VIN
INSP_VALVE
7VIN
PEEP_VALVE
SOLENOID_VALVE1
SOLENOID_VALVE2
SOLENOID_VALVE3
SOLENOID_VALVE4
PNEUM_PRES_SW
NC
NC
O2_PRE_SW
MANU_AUTO_SW
GND
CO2_BYPASS_SW
O2+
O2-
1-45
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
TXD_AUX_BRD
RXD_AUX_BRD
GND
RSVD
RSVD
RSVD
VF
GND
TXD_MON_BRD
RXD_MON_BRD
12V
GND
5V
5V
TXD_CALIBRATE
RXD_CALIBRATE
GND
12V
Auxiliary monitoring board serial port transmitting signal
Auxiliary monitoring board serial port receiving signal
Grounding
Reserved
Reserved
Reserved
Expiratory flow sensor differential pressure output signal
Grounding
VCM serial port transmitting signal
VCM serial port receiving signal
12V power supply
Grounding
VCM control safety valve signal
5V power supply
Calibration serial port transmitting signal
Calibration serial port receiving signal
Grounding
12V power supply
Pneumatic assembly interface, J2
Pin
Name
Function
1
2
3
7Vout
SAFE_VALVE
7Vout
Safety valve power supply
Safety valve drive signal
Inspiration valve power supply
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
INSP_VALVE
7Vout
PEEP_VALVE
12V
SOLENOID_VALVE1
12V
SOLENOID_VALVE2
12V
SOLENOID_VALVE3
12V
SOLENOID_VALVE4
RSVD
RSVD
RSVD
VF
12V
GND
NC
NC
NC
GND
O2_PRE_SW
Inspiration valve drive signal
PEEP valve power supply
PEEP valve drive signal
Three-way valve power supply
Three-way valve drive signal 1
Three-way valve power supply
Three-way valve drive signal 2
Three-way valve power supply
Three-way valve drive signal 3
Three-way valve power supply
Three-way valve drive signal 4
Reserved
Reserved
Reserved
Expiratory flow sensor differential pressure output signal
Sensor adapter board 12V power supply
Grounding
Not connected
Not connected
Not connected
Grounding
Gas supply inlet O2 pressure switch signal
1-46
Pin
Name
Function
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
GND
PNEUM_PRES_SW
GND
MANU_AUTO_SW
GND
CO2_BYPASS_SW
GND
NC
GND
O2+
O2LOOP_SW
GND
NTC_R11
NTC_R12
NTC_R21
NTC_R22
HEA_PWR_15V
HEA_PWR_15V
GND
GND
12V
GND
RXD_FLOW_BRD
TXD_FLOW_BRD
Grounding
Pneumatic block pressure switch signal
Grounding
Auto/Manual switch signal
Grounding
CO2 canister in-position signal
Grounding
Not connected
Grounding
O2 concentration signal
Grounding
Circuit switch
Grounding
Thermistor signal 1
Thermistor signal 2
Thermistor signal 1
Thermistor signal 2
Heater drive voltage signal
Heater drive voltage signal
Grounding
Grounding
Electronic flowmeter board power supply
Grounding
Electronic flowmeter board serial port receiving signal
Electronic flowmeter board serial port transmitting signal
Display interface, J3
Pin
Name
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
LCD backlight switch signal
LCD brightness adjustment signal
Touchscreen control board serial port receiving signal
Touchscreen control board serial port transmitting signal
Not connected
AC indicator light drive signal
Battery indicator light drive signal
Main control board I2C signal
Main control board I2C signal
Not connected
Not connected
Not connected
Not connected
Not connected
Not connected
12V power supply
Grounding
LCD_EN
LCD_BR
RXD_TOUCH_PANEL
TXD_TOUCH_PANEL
NC
LED_AC
LED_BAT
MAIN_BRD_SDA
MAIN_BRD_SCL
NC
NC
NC
NC
NC
NC
12V
GND
1-47
Pin
Name
Function
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
GND
VCC_LCD
VCC_LCD
GND
GND
LVDS_DATA0+
LVDS_DATA0GND
LVDS_DATA1+
LVDS_DATA1GND
LVDS_DATA2+
LVDS_DATA2GND
LVDS_DATA3+
LVDS_DATA3GND
LVDS_CLK+
LVDS_CLKGND
Grounding
LCD power supply
LCD power supply
Grounding
Grounding
LVDS data signal
LVDS data signal
Grounding
LVDS data signal
LVDS data signal
Grounding
LVDS data signal
LVDS data signal
Grounding
LVDS data signal
LVDS data signal
Grounding
LVDS clock signal
LVDS clock signal
Grounding
Patient monitor module rack interface, J4
Pin
Name
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
LED_AC
3V3
12V
12V
GND
GND
NC
NC
12V
RSVD
RSVD
GND
LED_BAT
PCON-_NON
GND
PCON+
PCONTOUCHPAD_5V
TOUCHPAD_GND
TOUCHPAD_USB+
TOUCHPAD_USB12V
AC indicator light drive signal
3.3V power supply
12V power supply
12V power supply
Grounding
Grounding
Not connected
Not connected
12V power supply
Reserved
Reserved
Grounding
Battery indicator light drive signal
Power on/off inverse phase signal
Grounding
Power on/off signal +
Power on/off signal 5V power supply
Grounding
TOUCHPAD_USB differential signal +
TOUCHPAD_USB differential signal 12V power supply
1-48
23
24
25
GND
NC
NC
Grounding
Not connected
Not connected
Calibration interface, J5
Pin
Name
Function
1
2
3
4
5
6
7
8
9
Not connected
Not connected
Not connected
Not connected
Not connected
12V power supply
Calibration serial port receiving signal
Calibration serial port transmitting signal
Grounding
NC
NC
NC
NC
NC
12V
RXD_CALIBRATE
TXD_CALIBRATE
GND
Fan interface, J7
Pin
Name
Function
1
2
3
4
12V power supply
Reserved
Fan status signal
Grounding
12V3
RSVD
FAN1_STATE
GND
Speaker interface, J8
Pin
Name
Function
1
2
Speaker positive end
Speaker negative end
Speak+
Speak-
Battery adapter board interface, J9
Pin
Name
Function
1
2
3
4
5
6
7
8
BAT1+
NTC1
BC1
GND
BAT2+
NTC2
BC2
GND
Battery voltage
Battery internal thermistor
Battery in-position signal
Grounding
Battery voltage
Battery internal thermistor
Battery in-position signal
Grounding
Power board interface, J10
Pin
Name
Function
1
2
3
4
5
6
Buzzer drive signal (drive the buzzer directly)
Power board serial port receiving signal
Circuit switch (indicates if the circuit is in position)
Power board serial port transmitting signal
Not connected
Grounding
PLAM
RXD_PWR_BRD
LOOP_SW
TXD_PWR_BRD
NC
GND
1-49
Pin
Name
Function
7
8
9
10
11
12
LED-BAT
LCD_EN
LED-AC
LCD_BR
PCON3.3VBF
13
14
15
BAT2+
GND
BC2F
16
17
18
19
NTC2
BAT1+
GND
BC1F
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
NTC1
GND
GND
HEA_PWR_15V
HEA_PWR_15V
NTC_R12
NTC_R22
NTC_R11
NTC_R21
GND
GND
3V3
3V3
5V
GND
GND
GND
NC
GND
NC
NC
GND
GND
12V
GND
12V
12V
NC
Battery status indicator light drive output
LCD backlight switch signal
AC status indicator light drive output
Backlight brightness adjustment signal
Power on/off signal
3.3V power supply, only used for power on/off the
machine
No.2 battery input (connect to the battery positive end)
Grounding
No.2 battery in-position signal. Low level indicates that
battery is in position and high level indicates that battery
is not in position.
No.2 battery internal thermistor signal
No.1 battery input (connect to the battery positive end)
Grounding
No.1 battery in-position signal. Low level indicates that
battery is in position and high level indicates that battery
is not in position.
No.1 battery internal thermistor signal
Grounding
Grounding
Heater drive voltage output
Heater drive voltage output
Thermistor (for controlling heater) pin 1
Thermistor (for controlling heater) pin 2
Thermistor (for controlling heater) pin 1
Thermistor (for controlling heater) pin 2
Grounding
Grounding
3.3V voltage output
3.3V voltage output
5V voltage output
Grounding
Grounding
Grounding
Not connected
Grounding
Not connected
Not connected
Grounding
Grounding
12V power supply output
Grounding
12V power supply output
12V power supply output
Not connected
1-50
Pin
Name
Function
48
49
50
15V2
NC
15V2
15.2V voltage output
Not connected
15.2V voltage output
Main control board interface, J11
Pin
Name
Function
A1
LCD_VDD
LCD power supply
A2
GND
Grounding
A3
NC
Not connected
A4
NC
Not connected
A5
RSVD
Reserved
A6
RSVD
Reserved
A7
GND
Grounding
A8
RSVD
Reserved
A9
RSVD
Reserved
A10
Grounding
A11
GND
UIVCC_USB
A12
TOUCHPAD_USB+
TOUCHPAD_USB data signal +
A13
TOUCHPAD_USB-
TOUCHPAD_USB data signal -
A14
GND
Grounding
A15
SCL
CPU board I2C clock
A16
SDA
CPU board I2C data
A17
GND
Grounding
A18
NC
Not connected
A19
A20
NC
NC
NC
Not connected
Not connected
Fan status signal
A23
FAN1_STATE
NC
Not connected
A24
GND
Grounding
A25
3V3
Main control board power supply
A26
3V3
Main control board power supply
A27
GND
Grounding
A28
GND
Grounding
A29
5V
Main control board power supply
A30
5V
Main control board power supply
A31
GND
Grounding
A32
GND
Grounding
B1
NC
Not connected
B2
NC
Not connected
B3
NC
Not connected
B4
SPK_OUT+
Speaker drive signal +
A21
A22
USB power supply
Not connected
1-51
Pin
Name
Function
B5
SPK_OUT-
Speaker drive signal -
B6
GND
Grounding
B7
NC
Not connected
B8
NC
Not connected
B9
NC
Not connected
B10
NC
Not connected
B11
NC
Not connected
B12
GND
Grounding
B13
TXD_PWR_BRD
Power board serial port transmitting signal
B14
RXD_PWR_BRD
Power board serial port receiving signal
B15
GND
Grounding
B16
TXD_FLOW_BRD
Electronic flowmeter board serial port transmitting signal
B17
RXD_FLOW_BRD
Electronic flowmeter board serial port receiving signal
B18
GND
Grounding
B19
TXD_TOUCH_PANEL
Touchscreen control board serial port transmitting signal
B20
RXD_TOUCH_PANEL
Touchscreen control board serial port receiving signal
B21
RSVD
Reserved
B22
RSVD
Reserved
B23
GND
Grounding
B24
NC
Not connected
B25
NC
Not connected
B26
NC
Not connected
B27
GND
Grounding
B28
NC
Not connected
B29
NC
Not connected
B30
NC
Not connected
B31
NC
Not connected
B32
Not connected
C1
NC
GND
C2
LVDS-TO0+
LVDS data signal
C3
LVDS data signal
C4
LVDS-TO0GND
C5
LVDS-TO1+
LVDS data signal
C6
LVDS data signal
C7
LVDS-TO1GND
C8
LVDS-TO2+
LVDS data signal
C9
LVDS data signal
C10
LVDS-TO2GND
C11
LVDS-TO3+
LVDS data signal
C12
LVDS-TO3GND
LVDS data signal
C13
Grounding
Grounding
Grounding
Grounding
Grounding
1-52
Pin
Name
Function
C14
LVDS-TOC+
LVDS clock signal
C15
LVDS-TOC-
LVDS clock signal
C16
GND
Grounding
C17
TXD_MON_BRD
Monitoring board serial port transmitting signal
C18
RXD_MON_BRD
Monitoring board serial port receiving signal
C19
GND
Grounding
C20
TXD_AUX_BRD
Auxiliary monitoring board serial port transmitting signal
C21
RXD_AUX_BRD
Auxiliary monitoring board serial port receiving signal
C22
GND
Grounding
C23
NC
Not connected
C24
NC
Not connected
C25
GND
Grounding
C26
TP_PWR_CTRL
Touchpad power control signal
C27
Reserved
C28
RSVD
RSVD
Reserved
C29
RSVD
Reserved
C30
RSVD
Reserved
C31
NC
NC
Not connected
C32
Not connected
Debugging power on/off interface, J12
Pin
Name
Function
1
2
PCON+
PCON-
Power on/off signal
Power on/off signal
Test point definition
Label
Name
Function
Range (unit:V)
T1
BAT1
Battery voltage 1
Fully charged 12.6±5%
T2
T3
BAT2
LED_BAT
Battery voltage 2
Battery indicator light drive
signal
T4
TXD_7024
Auxiliary monitoring board
serial port transmitting signal
T5
TXD_TOUCH
Touchscreen control board
serial port transmitting signal
T6
RXD_7024
Auxiliary monitoring board
serial port receiving signal
T7
RXD_TOUCH
Touchscreen control board
serial port receiving signal
T8
TXD_33209
Auxiliary monitoring board
serial port transmitting signal
T9
TXD_FLOW
Electronic flowmeter board
serial port transmitting signal
Fully charged 12.6±5%
Battery in-position
2.5~3.5;
Battery not in-position
0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
1-53
Label
Name
Function
Range (unit:V)
T10
RXD_33209
VPM serial port receiving
signal
T11
RXD_FLOW
Fresh flow sensor board serial
port receiving signal
T12
TXD_POWER
Power board serial port
transmitting signal
T13
RXD_POWER
Power board serial port
receiving signal
T14
T15
T16
T17
T18
T19
5V
3.3V
15V2
12V
P15V
LED_AC
5V power supply
3.3V power supply
15.2V power supply
12V power supply
Heater power supply
AC indicator light drive signal
T20
T21
T22
T23
T24
12V1
12V2
12V3
7V
LCD_EN
12V power supply
12V power supply
12V power supply
7V power supply
LCD backlight enabled signal
T25
LCD_BR
LCD backlight brightness
adjustment signal
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
High level 2.4~5;
Low level 0~0.4
4.75~5.25
3.135~3.465
14.44~15.96
11.4~12.6
0~15
With AC: 5~3.5;
Without AC: 0~0.4
11.4~12.6
11.4~12.6
11.4~12.6
6.65~7.35
High level 3.145~3.465;
Low level 0~0.3
Brightest 0~1.5; least
bright 4.75~5.25
1.7.2 Monitoring Module
The monitoring module performs pressure and flow detection of anesthetic ventilator and
anesthetic breathing system, valve control, status monitoring collection, O2 concentration
reading, accurate pressure and flow monitoring within the circuit, and accurate control of tidal
volume. The monitoring module is composed of two boards, which are monitoring signal
detection board and valve drive board.
1-54
1.7.2.1 Monitoring Signal Detection Board
J1
J5
J12
J6
J3
Monitoring signal detection board (Top view)
Monitoring signal detection board communication interface, J1
Pin
Name
Function
1
TXD
Serial port transmitting
2
3
4
RXD
12V
GND
Serial port receiving
12V power supply (range: 10.8V~13.2V)
Grounding
5
6
7
8
GND
12V
CLOSE_SAFE
5V
Grounding
12V power supply (range: 10.8V~13.2V)
Safety valve control signal
5V power supply (range: 4.75V~5.25V)
VT calibration communication interface, J7
Pin
Name
Function
1
TXD_CALIBRATE
Calibration serial port transmitting signal
2
3
4
RXD_CALIBRATE
GND
12V
Calibration serial port receiving signal
Grounding
12V power supply (range: 10.8V~13.2V)
Three-way valve interface, J6
Pin
Name
Function
1-55
J7
1
12V
Three-way valve power supply (range: 10.8V~13.2V)
2
3
4
SOLENOID_VALVE1
12V
SOLENOID_VALVE2
Three-way valve control 1
Three-way valve power supply (range: 10.8V~13.2V)
Three-way valve control 2
5
6
7
12V
SOLENOID_VALVE3
12V
Three-way valve power supply (range: 10.8V~13.2V)
Three-way valve control 3
Three-way valve power supply (range: 10.8V~13.2V)
8
SOLENOID_VALVE4
Three-way valve control 4
Valve drive board communication interface, J5
Pin
Name
Function
1
TXD_VPM
Ventilation protection board serial port transmitting signal
2
3
4
RXD_VPM
GND
12V
Ventilation protection board serial port receiving signal
Grounding
12V power supply (range: 10.8V~13.2V )
Pin
O2 cell interface, J12
Name
Function
1
O2+
O2 cell +
2
3
O2GND
O2 cell Grounding
Test point definition
Label
Function
Range (unit:V)
10V5
R5V
7V
A5V
3V3
1V3
2V5
R5V
12V
VH1~VH2
VF1~VF3
VP1~VP2
SAN1
SAN2
SAN3
SAN4
10.5V Power supply
5V Power supply
7V Power supply
5V Power supply
3.3V Power supply
1.3V Power supply
2.5V Power supply
5V Power supply
12V Power supply
1.136V Power supply
0.278V Power supply
0.877V Power supply
Three-way valve signal 1
Three-way valve signal 2
Three-way valve signal 3
Three-way valve signal 4
9.957~11.025
4.75~5.25
6.65~7.35
4.75~5.25
3.15~3.45
1.235~1.365
2.375~2.625
4.75~5.25
10.8~13.2
1.079~1.193
0.264~0.292
0.833~0.921
0~12
0~12
0~12
0~12
1-56
1.7.2.2 Valve Drive Board
Valve drive board (Top view)
Valve drive board (Bottom view)
Proportional valve and safety valve drive interface, J4
Pin
Name
Function
1
7V
Safety valve power supply (Range: 6.65V~7.37V)
1-57
Pin
Name
Function
2
3
4
5
6
SAFE_VALVE
7V
INSP_VALVE
7V
PEEP_VALVE
Safety valve control signal
Inspiration valve power supply (Range: 6.65V~7.37V)
Inspiration valve control signal
PEEP valve power supply (Range: 6.65V~7.37V)
PEEP valve control signal
Power supply interface, J2
Pin
Name
Function
1
2
3
Grounding
Grounding
12V power supply (Range: 10.8V~13.2V)
GND
GND
12V
Status detection interface, J8
Pin
Name
1
2
GND
PNEUM_PRE_SW
3
4
5
6
7
8
GND
NC
GND
NC
GND
ACGO_PRE_SW
9
10
GND
O2_PRE_SW
11
12
GND
MANU_AUTO_SW
Function
Grounding
Pneumatic block pressure switch signal: high level
indicates the pneumatically-driven supply is not in position
and the low level indicates it in the position; The high level
ranges from 2.4V~3.5V, and the low level from 0V~0.8V.
Grounding
Not connected
Grounding
Not connected
Grounding
ACGO switch signal: A high level indicates ACGO is off
and a low level indicates ACGO is on; the high level
ranges from 2.4V~3.5V and the low level ranges from
0V~0.8V.
Grounding
Gas supply inlet O2 pressure switch signal: High level
indicates O2 supply is not in the position and the low level
indicates O2 supply is in the position. the high level ranges
from 2.4V~3.5V and the low level ranges from 0V~0.8V.
Grounding
Auto/Manual switch signal: High level indicates the auto
switch and the low level indicates the manual switch. the
high level ranges from 2.4V~3.5V and the low level ranges
from 0V~0.8V.
Test point definition
Label
Function
Range (unit: V)
3V3-VCM
1238mV
V7V1
V5V1
SAFE1
7V
3.15~3.45
1.176~1.300
6.65~7.35
6.65~7.35
0~12
6.65~7.35
3.3V Power supply
1.238V Power supply
7V Power supply
7V Power supply
Safety valve signal
7V Power supply
1-58
D5V
1V3
D3V3
2V5
R5V
5V Power supply
1.3V Power supply
3.3V Power supply
2.5V Power supply
5 V Power supply
4.75~5.25
1.235~1.365
3.15~3.45
2.375~2.625
4.75~5.25
1.7.3 Battery
1.7.3.1 Battery
For A5 anesthesia system：



Battery: 11.1V4.5Ah×2 lithium-ion battery (sealed)
Battery running time: 150 min (new battery)
Battery charge time: maximum 8 hours calculated from initial capacity of 10%
1.7.3.2 Battery Adapter Board
J3
Battery adapter board (Top view)
J1
J2
Battery adapter board (Bottom view)
Battery interface, J1 and J2
Pin
Name
Function
1
2
3
4
5
6
7
Battery voltage +
Battery voltage +
Battery in-position signal
Battery voltage Battery internal thermistor
Battery voltage Battery voltage -
BAT+
BAT+
BC
BATNTC
BATBAT-
Battery connection line interface, J3
1-59
Pin
Name
Function
1
2
3
4
5
6
7
8
VBAT1
NTC1
BC1
GND
VBAT2
NTC2
BC2
GND
Battery voltage
Battery internal thermistor
Battery in-position signal
Grounding
Battery voltage
Battery internal thermistor
Battery in-position signal
Grounding
1.7.4 Heater of the Breathing System
The breathing system heater of A5 anesthesia machine provides software and hardware
temperature protection. It switches over its operating mode automatically according to the change
in ambient temperature.
1.7.5 Anesthesia Calculation and Infrared Module Rack
Anesthesia calculation and infrared module rack involve two boards—infrared communication
board and anesthesia signal transfer board
1.7.5.1 Infrared Communication Board
Infrared communication board (Top view)
1-60
Infrared communication board (Bottom view)
Infrared communication board interface, J2
Pin
Name
Function
1
VPP
12V power supply
2
VPP
12V power supply
3
GND
Grounding
4
GND
Grounding
5
VDD
3.3V power supply
6
VDD
3.3V power supply (IO pull-up power supply)
Pin
1
2
3
Infrared communication board interface, J4
Name
Function
INTERFACE_TX0
Infrared communication board transmitting signal
INTERFACE_RX0
Infrared communication board receiving signal
GND
Grounding
1.7.5.2 Anesthesia Signal Transfer Board
Anesthesia signal transfer board (Top view)
1-61
Anesthesia signal transfer board (Bottom view)
Anesthesia signal transfer board power supply and communication interface, P1
Pin
Signal
Function
1
RXD_AG_TTL
AG module receiving signal
2
TXD_AG_TTL
AG module transmitting signal
3
GND
Grounding
4
VPP
12 V power supply (range: 10.8–13.2 V)
AG module power supply and communication interface, P2
Pin
Signal
Function
1
RXD_AG_232
AG module receiving signal
2
TXD_AG_232
AG module transmitting signal
3
GND
Grounding
4
NC
No internal connection
5
VPP
12 V power supply (range: 10.8–13.2 V)
6
VPP
12 V power supply (range: 10.8–13.2 V)
7
GND
Grounding
8
GND
Grounding
1.7.6 Power Board
The power board is divided into AC-DC and DC-DC. AC-DC converts the electrical grid power
input to 15.2 V DC power supply, and DC-DC converts the 15.2 V power supply output by ACDC or the lithium battery power supply to the following DC voltages required by the integrated
system: 12 VA, 12 VB, 5.0 V, and 3.3 V. The power board implements lithium battery charging
management and provides functions such as power-on/off control and driving of the AC indicator,
battery indicator, and heating module.
When the system is started, the power board CPU detects the startup signal and controls the
power-on of 3.3 V, 5 V, and 12 VA (12 VB) in sequence, of which 12 VA and 12 VB are powered
on simultaneously. When the system is closed, 12 VA (12 VB), 5 V, and 3.3 V are powered off in
sequence, of which 12 VA and 12 VB are powered off simultaneously.
Interface to the motherboard, J3
Pin
Signal
Function
1
2
3
Power board serial port communication receiving
Power board serial port communication transmitting
Grounding
RXD
TXD
GND
1-62
4
LCD-EN
LCD backlight enabling signal
5
LCD-BR
LCD backlight brightness control voltage
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
3.3VBF
GND
NTC2
GND
NTC1
GND
P15V
HRT22
HRT21
GND
3.3V
GND
GND
GND
NC
GND
GND
12V1
3.3 V only used for power-on/off (range: 3.135–3.465 V)
Grounding
Thermoelectric signal connected inside lithium battery 2
Grounding
Thermoelectric signal connected inside lithium battery 1
Grounding
Heating wire drive voltage output (range: 12.42–15.18 V)
Heating wire thermoelectric pin 1
Heating wire thermoelectric pin 2
Grounding
3.3 V voltage output (range: 3.135–3.465 V)
Grounding
Grounding
Grounding
No internal connection
Grounding
Grounding
First 12 V voltage output (range: 10.8–13.2 V)
24
15.2VB
15.2 V voltage output (range: 14.44–15.96 V)
25
26
15.2VB
PLAM
27
SWITCH
28
29
30
P-FAN+
LED-BAT
LED-AC
15.2 V voltage output (range: 14.44–15.96 V)
Buzzer drive signal used to drive the buzzer directly
Circuit switching, which indicates whether the circuit is in
position
Power board cooling fan drive
Battery status indicator drive output
31
PCON
32
BAT2+
33
BC2
34
BAT1+
35
BC1
36
37
38
39
40
41
42
GND
P15V
HRT12
HRT11
GND
3.3V
5.0V
AC status indicator drive output
Power-on/off signal, LVTTL pulse signal. When the signal
is at high level, the system is powered on. When the signal is
at low level, the system is powered off.
Lithium battery 2 input, connected to the battery anode
Signal indicating the existence of lithium battery 2. When
the signal is at low level, lithium battery 2 exists. When the
signal is at high level, lithium battery does not exist.
Lithium battery 1 input, connected to the battery anode
Signal indicating the existence of lithium battery 1. When
the signal is at low level, lithium battery 2 exists. When the
signal is at high level, lithium battery does not exist.
Grounding
Heating wire drive voltage output (range: 12.42–15.18 V)
Heating wire thermoelectric pin 1
Heating wire thermoelectric pin 2
Grounding
3.3 V voltage output (range: 3.135–3.465 V)
5.0 V voltage output (range: 4.75–5.25 V)
1-63
43
44
45
46
47
48
49
50
GND
NC
NC
GND
12V1
12V1
NC
NC
Grounding
No internal connection
No internal connection
Grounding
First 12 V voltage output (range: 10.8–13.2 V)
First 12 V voltage output (range: 10.8–13.2 V)
No internal connection
No internal connection
1.8 O2-driven Ventilator
1.8.1 O2-driven Ventilator
O2 is the drive gas of the ventilator. In addition to the flowmeter module, a high-pressure
regulator reduces the supply gas pressure to 200kPa (29psi). This pressure is the pressure of
ventilator drive gas.
The drive gas pressure regulator is located before the proportional valve. The proportional valve
produces drive gas flow during inspiration phase. The gas flow fills the space between the
bellows and bellows housing.
1.8.2 High-pressure Drive Gas Regulator (200kPa, 29psi)
The drive gas pressure regulator functions to stabilize the supply gas pressure provided for the
proportional valve.
The gas flow is controlled by the electronic proportional valve and is independent of pressure
level.
Setting the drive gas pressure regulator to 200kPa (29psi) can cause the ventilator’s maximum
inspiratory flow to reach 110L/min.
1.8.3 Drive Gas Assembly
The drive gas assembly mainly consists of inspiratory circuit and PEEP circuit. The gas flow in
inspiratory circuit goes through the inspiration valve and produces flow of 0 to 110L/min. The
gas flow in PEEP circuit goes through the PEEP valve and produces pressure of 3 to 30cmH2O.
Both PEEP valve and inspiration valve are electronic proportional valves and are controlled by
valve drive board.
1.8.4 Tube Color Coding
All the pneumatic tubes used in the anesthesia system are transparent.
1-64
2 Installation Guide
2.1 Preparation
The following additional materials are required before installation. The customer is
responsible for supplying these materials. Missing items may result in delays, incomplete
installations, and/or additional service visits.
 O2 cylinder, N2O cylinder, and Air cylinder in compliance with the configuration
standard.
 Anesthetic vaporizer and adapter (if not purchased together with the anesthesia system)
 Anesthetic agent
 Loose fill or Pre-pak CO2 absorbent
 Effective O2, N2O, and Air gas sources (280 to 600kPa (40 to 87psi))
 Dropdown hoses for ceiling mounted medical gas equipment, compatible with quickdisconnect hoses (if not purchased together with the anesthesia system)
2.2 Assembly
NOTE: after the flow sensors are calibrated, the anesthesia machine must be used together
with the breathing system module. If the breathing system module is removed, make sure that
it is re-installed onto the original anesthesia machine. If other breathing system module is to
be installed, the flow sensor must be re-calibrated (please refer to 4.3.2 Flow Calibration
(Factory)).
2.2.1 Unpacking and Setup
1.
a.
b.
After receiving A5, check the packing box for damage immediately.
If there is no damage and the anti-tilt label on the packing box is in good condition, sign
the name and date on the bill of lading or air waybill to indicate that the anesthesia
machine has been received safely.
If there is damage or the anti-tilt label on the packing box is not in good condition,
describe the damage on the bill of lading or air waybill. Both the carrier and the receiver
must sign his name and date on the bill of lading or air waybill. Save all damaged
delivery package until further information is given by Mindray. The receiver must
contact Mindray Customer Service Department immediately.
NOTE: When unpacking the equipment, keep as much of the plastic covering on the
equipment. When all parts are unpacked, place the packing materials into the original packing
box. Then, place the smaller boxes inside the large box.
2-1
2.
Cut, remove, and discard the white packing straps on the packing box.
3.
Remove the packing box cover and put it on the floor beside the equipment. Later, the
cover can be used as slope for the convenience of pushing A5 onto the floor.
4.
Lift the packing box and remove it from the top of the equipment.
2-2
5.
Remove the foam from the top of A5.
6.
Cut the plastic straps as shown below. Pull down the plastic bag from the equipment.
7.
Cut the plastic straps close to the back of A5. Take care not to scratch or damage the
equipment. Remove and discard the plastic straps. Remove the empty box on the
equipment bench.
2-3
8.
Remove the foam from the display and bench.
9.
After removing the plastic straps and foam, check if there is a box available at both sides
of the equipment, as shown below. Remove the package.
10. Use a pair of scissors to cut the two fiber straps on the base of packing box platform.
11. Remove the wood from the front of the A5. Remove the foam and packing material
from around the front the equipment.
2-4
12. Remove the foam and packing material from around the back the equipment.
13. Place the packing box cover beside the wooden box base, using as the slope for pushing
the equipment onto the floor, as shown below. Place the smooth side of the wood
upward. A supporting foot is available at the other side of the wood to support the slope.
Fix the slope onto the wooden box with buckle strap.
14. Rotate the casters for 90°. Then push A5 gently to roll it down the slope. Remove the
packing box on the equipment. Keep the packing box in case that A5 needs re-packing.
Note: Please check the packing details when performing the following installations.
15. Open the bottom drawer and take out the breathing system assembly and bag arm
assembly.
2-5
16. Install the breathing system assembly onto A5. Take care to align the assembly with A5
and then push it to A5 directly until it is stuck at the proper position.
17. Open the small box containing bellows assembly and bellows housing gently. Remove
the plastic bag from the assembly and put the foam and plastic bag into the box.
18. Install the bellows onto the breathing system. After installation, make sure that the
bellows are fully extended and surround the tabs of breathing system.
19. Place the bellows housing downward onto the breathing system. Then rotate it clockwise
to fix it at proper position (the scale marks on the bellows housing shall be placed
forward for the convenience of being seen by the operator).
2-6
20. Align with the slots to install the bag arm assembly as shown below.
21. Push the bag arm assembly into the breathing system and tighten the fixing nut as shown
below.
2-7
22. Open the middle and bottom drawers and take out the detachable absorber canister
assembly, waste gas scavenging system hose, and waste gas scavenging assembly gently.
23. Install the white absorber canister hose onto the absorber canister assembly. Install the
absorber canister assembly when it is not stably placed. First install its lower part. Align
the pins with the holes. Then align the upper part. Push in the upper part upward until
the front and back latches are stuck at the proper position.
2-8
24. Fill Pre-pack or loose fill CO2 absorbent into the canister. Slide the canister into the
canister assembly. Rotate the lock bar anticlockwise for 90° to fix the canister at the
proper position.
25. Slide the scavenging assembly into the rail at the left bottom of A5 (namely, the same
side with the breathing system assembly). Then tighten the thumbscrew to fix the
assembly at the proper position. Install one end of the scavenging hose onto the
scavenging assembly and the other end onto A5, as shown below.
26. Open the top drawer and check if it contains the following:
 Auxiliary O2/Air reference card
 Preoperative checklist
 Inspiratory flow sensor and expiratory flow sensor
 O2 cell unit (optional configuration)
 Cylinder wrench (optional configuration)
 Drawer key
2-9
27. Loosen the two fast locking screws to open the service door. Remove the two hand
screws to open the battery box. Install one or two batteries and make sure that the
batteries are installed with correct polarity. Close the battery box and tighten the hand
screws.
28. Before installing the cylinders onto the back of A5, make sure that washer is already
installed. Remove the tape fixing the washer. Then install the cylinders. Make sure that
the cylinders are fixed onto the respective cylinder connectors (marked with O2, Air,
and N2O).
29. Connect the gas supplies. Rotate the hose connectors clockwise to tighten them onto the
gas supply connectors. Make sure that the supply gas pressure is within the specified
range.
30. Connect the manual bag (supplied by the user) to the bag arm.
31. Connect the patient’s breathing circuit (supplied by the user) to the inspiratory and
expiratory connectors.
WARNING: Use breathing circuit and manual bag according to ASTMF1208. Standard
male 22mm conical fittings can be used for breathing circuit and manual bag according
to ASTM F1054.
32. Rotate the knob at the top of AGSS tank until the float is between the minimum and
maximum marks. Connect the hose from the gas scavenger to the EVAC connector of
operating room.
33. Install the O2 sensor inside the stainless housing. Tighten the O2 sensor properly.
34. Connect the O2 sensor external cable between the O2 sensor and the side of A5. Align
the cable with the yellow mark on the connector.
2-10
35. Insert the power cord into the grounded socket. Set the main unit power switch (located
on the front of A5) to ON position to turn on A5. Wait until the LCD display displays
leak test related information. View if power-on selftest is successful. Do not connect,
disconnect, or move the breathing circuit or bag during selftest.
36. Install the patient monitor and arm according to the instructions in the monitoring kit.
WARNING: Use only Mindray approved patient monitor and arm for A5.
37. Connect the sample gas return hose (P/N: 115-015457-00) to the gas module outlet and
the sample gas return port at the back of A5 (above the EVAC connector).
38. Put the following parts into the bottom drawer:
 A5 operator’s manual
 Sealing washer
39. Hang the preoperative checklist and auxiliary O2/Air reference card onto the handle of
A5.
2.2.2 Breathing System, Breathing System Accessories and
Checkout Procedures
1. Patient circuit
3.AGSS
2. AGSS transfer tube
4. CO2 absorbent
5. O2 sensor and cable
2.2.3 AGSS Connections
1.
2.
3.
Take out the AGSS from the foam and plastic bag.
Install the AGSS onto A5 via the GCX compatible rail system.
Connect the AGSS transfer tube between the AGSS inlet port and A5 exhaust port.
2-11
2.2.3.1 Cylinder Wrench and Preoperative Checklist
1.
2.
Fix the cylinder wrench onto the back of A5 so that it can be used to open or close
cylinders without disconnecting from the machine.
Put the preoperative checklist at the location of A5 easily accessible for the operator.
2.2.4 Vaporizer
WARNING: If the vaporizer is incompatible with the A5 Anesthesia System, the
vaporizer will not work at all. Use vaporizers with Selectatec mounting system that are
compliant to ISO8835-4. Refer to the vaporizer manufacturer’s Instructions For Use for
filling or draining the vaporizer and other information.
WARNING: For the A5 Anesthesia System, using or turning on more than one
vaporizer simultaneously is mechanically prevented by the Selectatec mount system. Do
not attempt to override this safety feature.
WARNING: Use care in lifting and manipulating vaporizers during the mounting
process as their weight may be greater than expected, based on their size and shape.
NOTE: The barometric pressure at the customer side may be different from the factory
calibration pressure of anesthetic vaporizer. This may cause inaccurate concentration
output of anesthetic agent. The operator should continuously monitor the concentration
of anesthetic agent during system use.
1.
Align the vaporizer over the valve cartridges of the mounting bar. Hang the vaporizer on
the mounting bar as shown below. Note that the locking handle is in the unlocked
position.
Locking handle in
the unlocked
position
2-12
2.
Rotate the locking handle clockwise to the locked position as shown below.
Locking handle in the
locked position
2.2.4.1 Assemble the Vaporizer
1.
2.
3.
4.
5.
Mount the vaporizer onto the manifold.
Push and turn the locking lever clockwise to lock the vaporizer in position.
Ensure that the top of the vaporizer is horizontal. If not, remove the vaporizer and
reinstall it.
When reinstalling the vaporizer, lift each vaporizer straight up off the manifold rather
than pulling forward. Do not rotate the vaporizer on the manifold.
If a vaporizer unintentionally lifts off the manifold, install it again and complete steps 1
through 3. If the vaporizer lifts off a second time, do not use the system.
NOTE: A Desflurane vaporizer may be mounted similarly as other vaporizers, but may
require a power cord. For more detailed instructions on installation and proper use, refer
to the specific manufacturer’s Instructions for Use of the Desflurane vaporizer.
2.2.4.2 Fill the Vaporizer
NOTE: The A5 should use vaporizers with Selectatec mounting system that are
compliant to ISO8835-4. Refer to the vaporizer manufacturer’s Instructions For Use for
filling or draining the vaporizer and other information.
WARNING: Ensure that the correct anesthetic agent is used. The vaporizer is designed
with the specific anesthetic agent name on it and further indicated by color coded label.
The concentration of the anesthetic agent actually outputted will vary if the vaporizer is
filled with the wrong agent.
2.2.4.3 Drain the Vaporizer
WARNING: Do not reuse the agent drained from the vaporizer. Treat as a hazardous
chemical and follow local regulations for proper disposal.
NOTE: The A5 should use vaporizers with Selectatec mounting system that are
compliant to ISO8835-4. Refer to the vaporizer manufacturer’s Instructions For Use for
filling or draining the vaporizer and other information.
2-13
2.2.5 Backup Cylinder
1.
2.
3.
4.
5.
6.
7.
Remove the cover from a new O2, N2O, and AIR cylinder.
Mount one cylinder at a time onto the rear of the anesthesia machine.
Discard the cylinder's tank washer. Always use the approved tank washer provided with
the A5.
Open the bail of each yoke and mount the cylinder over the tank washer.
Ensure the O2 cylinder mates to the O2 Pin Index Safety System (PISS) connection on
the O2 yoke. Close the yoke bail and use the hand-screw to tighten the cylinder to the
yoke port.
Ensure that the N2O cylinder mates to the N2O PISS connection on the N2O yoke.
Close the yoke bail and use the hand-screw to tighten the cylinder to the yoke port.
Ensure that the AIR cylinder mates to the AIR PISS connection on the AIR yoke. Close
the yoke bail and use the hand-screw to tighten the cylinder to the yoke port.
2.2.6 Monitoring Products Mounting and Electrical
Connection (if available)
1.
Mount the monitor (if available) according to the manufacturer’s monitor assembly
instructions.
NOTE: Use of other monitor and mounting hardware is performed by the installer.
2. After mounting a monitor to the A5, connect it to one of the AC outlets located on the
rear of the A5.
3. Turn on each monitor one at a time. Verify that the circuit breaker holds without
tripping.
4. Dress each line cord neatly along the side of the anesthesia machine or tucked inside the
monitor arm. An optional cable routing kit is available. The cable routing kit contains
three (3) clips, screws, and two (2) Ethernet cables. The clips attach to three (3) sets of
holes on the rear door of the A5. Ethernet and power cables can be routed through the
clips.
2-14
2.3 Factory Setup
The password set by the factory is 558188.
Choose [Main] > [Service] and then enter the password set by the factory to access the
factory setting menu.
The factory setting menu includes function activation, drive gas setting, flowmeter pipeline
setting, ACGO setting, module rack setting, AG module setting, BIS module setting, NMT
module setting and CO2 module setting. After you modify some factory configurations, you
have to restart the machine for the modification to take effect. After you enter the password
set by the factory, a screen as shown in the following figure is displayed.
NOTE: All setting items under factory setting menu are enabled only in standby mode.
2-15
2.3.1 Function Activation
The system supports activation code-based activation and activation code file-based
activation.
The activation code file must be placed in the root directory of USB.
The newly activated function can take effect only after you restart the machine.
2.3.2 Drive Gas
Drive gas has two options: O2 and AIR. Maintenance personnel shall configure this function
as required.
2-16
2.3.3 Flowmeter Standard
Flowmeter standard has five options: American, European, Chinese, Canadian, and Custom.
Maintenance personnel shall configure this function as required.
NOTE: Canadian-standard flowmeters are in the order of American-standard flowmeters but
with the colors of European-standard flowmeters. Custom-standard flowmeters are in the
order of AIR, N2O and O2 from left to right with the colors of European-standard flowmeters.
2.3.4 Flowmeter Pipeline
A Flowmeter pipeline has three options: O2+N2O+AIR, O2+AIR, and O2+N2O.
Maintenance personnel should configure this function according to the practical requirements.
2.3.5 ACGO
ACGO has three options: Off, ACGO with three-way valve, and electronic ACGO. Among
them, Off applies to the machine that does not need to be configured with ACGO, machine
that needs to be configured with a non-independent ACGO, and machine that needs to be
configured with independent ACGO without three-way valve. Independent ACGO with threeway valve applies to the machine that needs to be configured with ACGO with three-way
valve. Electronically controlled ACGO applies to the machine that needs to be configured
with electronically controlled ACGO.
2.3.6 Module Rack
The setting of module rack provides two options: Open and Close.
When module rack is set to Open, the machine can identify module plugging and monitor the
module rack fan speed.
When module rack is set to Close, the machine cannot identify module plugging or monitor
the module rack fan speed.
2.3.7 AG Module
The setting of AG module provides two options: Open and Close.
When AG module is set to Open, the machine can identify the external AG module.
When AG module is set to Close, the machine cannot identify the external AG module.
2.3.8 BIS Module
The setting of BIS module provides two options: Open and Close.
When BIS module is set to Open, the machine can identify the external BIS module.
When BIS module is set to Close, the machine cannot identify the external BIS module.
2.3.9 CO2 Module
The setting of CO2 module provides two options: Open and Close.
When CO2 module is set to Open, the machine can identify the external CO2 module.
When CO2 module is set to Close, the machine cannot identify the external CO2 module.
2-17
2.3.10 NMT Module
The setting of NMT module provides two options: Open and Close.
When NMT module is set to Open, the machine can identify the external NMT module.
When NMT module is set to Close, the machine cannot identify the external NMT module.
2.4 Functional Tests
Refer to 4 Calibration if any values are out of specification.
NOTE: The A5 system must be under power-up state (AC power instead of battery) and the
breathing system heating device set to ON position at least an hour before performing the
ventilation test (starting from 2.7.5.) (version 2.01.00 and higher).
2.4.1 Gas Delivery System Tests
2.4.1.1 O2 Flush Verification
1.
2.
3.
4.
5.
Connect the bag arm to the expiratory port via a breathing hose.
Set the Auto/Manual switch to the Manual position.
Set the APL valve to 75.
Connect the flowmeter to the inspiratory port.
Verify that the O2 flush flow is between 35 and 50 L/min when the O2 flush valve is
pressed.
2.4.1.2 O2:N2O Ratio System
1.
2.
3.
4.
5.
6.
Set the O2 and N2O flow control valves to minimum.
Rotate the O2 flow control valve until the flowmeter displays 1L/min.
Rotate the N2O flow control valve and adjust N2O flow to maximum.
Verify that the N2O flow is between 2.5L/min and 3.7L/min.
Decrease the N2O flow to minimum.
Decrease the O2 flow to minimum.
2.4.2 Breathing System Leak Test
NOTE: Perform leak test again each time after servicing the anesthesia machine, replacing
the components, or re-connecting the tubes.
2-18
2.4.2.1 Breathing System Leak Test in Mechanical Ventilation Mode
The test aims to check if the pneumatic circuit has leaks in mechanical ventilation mode. Test
items include bellows, drive gas circuit, CO2 canister, patient tubes, flow sensors and their
connectors.
To do the breathing system leak test in mechanical ventilation mode:
1. You can access the automatic circuit leak & compliance test screen after passing poweron selftest. You can also access the automatic circuit leak & compliance test screen by
opening the Main Menu and select Test Leak/Compliance from General. The automatic
circuit leak & compliance test screen is shown below. Set up the machine as per the
instructions on the screen. Then select Continue to execute automatic circuit leak and
compliance test. You can select Skip to access standby screen directly.
2.
Undertake the related operations according to the notes in the screen.
Results
Automatic circuit leak volume:
Pass
Compliance test: XX.X
mL/cmH2O
Indications/Options
Leak volume ≤ 200 mL/min
Compliance test result displays Green.
Choose [Continue] and access to the manual circuit leak
test screen.
2-19
Automatic circuit leak: XXX
mL/min
Compliance test: Pass
200 mL/min ＜ Leak volume ≤ 1000 mL/min
Compliance test went on successfully.
Choose [Continue] and access to manual circuit leak test
screen. Make use of the previous compliance value.
Or
Choose [Retry] and repeat the automatic circuit leak and
compliance test.
Automatic circuit leak: XXX
mL/min
Compliance test: Fail
Treatment measures:
1.Check if all the pipes are connected well.
2.Check if the Y-piece port is sealed well.
3.Check if the water collection cup is installed and the
drain valve is closed well.
4.Check if the sampling pipe is connected well.
Leak volume >200 mL/min and ≤ 1000 mL/min
Choose [Continue] and access the manual circuit leak
test screen and make use of the previous compliance
value.(Use the fresh air to compensate the leak volume)
Or
Choose [Retry] and repeat the automatic circuit leak and
compliance test.
Automatic circuit leak: Fail
Compliance test: Fail
Treatment measures:
1.Check if all the pipes are connected well.
2.Check if the Y-piece port is sealed well.
3.Check if the water collection cup is installed and the
drain valve is closed well.
4.Check if the sampling pipe is connected well.
Leak volume > 1000 mL/min.
No fresh air is detected.
Eliminate the troubles according to the tips in the screen.
Or
Select [Manual Only] to enable only manual ventilation
for the equipment. The low-priority alarm "Automatic
Ventilation Disabled–Leak Test Failed" will be displayed
on the main screen.
WARNING

Selecting Manual Only will disable
mechanical ventilation.
Treatment measures:
1.Check if all the pipes are connected well.
2.Check if the Y-piece port is sealed well.
3.Check if the water collection cup is installed and the
drain valve is closed well.
4.Check if the sampling pipe is connected well.
2-20
MACHINE NON-FUNCTIONAL
Automatic Circuit Leakage: Fail
Compliance Test: XX.X
mL/cmH2O
Safety Valve Control: Fail
The safety valve control test or pressure verification test
failed.
Select Retry to repeat the automatic circuit leak and
compliance tests.
Or
Contact the customer service center if this error condition
persists.
NOTE

Service Access button: This button is
available only to Mindray-authorized
service personnel and a service password
is required.
Treatment measure:
Check if the safety valve connection cables are
connected well.
NOTE: In case of automatic circuit leak test failure or compliance test failure, make use
of the visual tips and the helpful information to check if the drain valve and the
sampling port have been sealed completely. Besides, the connecting error or interface
damage of bellows, respiratory system pipes or CO2 canister also can cause the test
failure.
2-21
2.4.2.2 Breathing System Leak Test in Manual Ventilation Mode
The test aims to check if the pneumatic circuit has leaks in manual ventilation mode. Test
items include APL valve, check valve, CO2 canister, patient tubes, flow sensors and their
connectors.
To do the breathing system leak test in manual ventilation mode
1. You can access the manual circuit leak test screen after passing automatic circuit leak &
compliance test. You can also access the manual circuit leak test screen after opening
the Main Menu and select Test Leak/Compliance from Calibrate/General to complete
automatic circuit leak & compliance test. The manual circuit leak test screen is shown
below.
2.
Perform the related operations according to the directions in the screen.
Results
Pass
Indications/Options
Leak volume <= 200ml/min.
Fail: XXX mL/min
Adjust APL valve to SP.
Choose Continue and access to the main menu.
Leak volume >200 ml/min & <=1000 ml/min
Eliminate troubles according to the tips in the screen.
Or
Adjust APL valve to SP and choose Accept and then
access to the main menu.
Treatment measures:
1.
Check if all the pipes are connected well.
2.
Check if the Y-piece port is sealed well.
2-22
Results
Fail
Indications/Options
3.
Check if the water collection cup is installed and
the drain valve is closed well.
4.
Check if the sampling pipe is connected well.
Leak volume > 1000 ml/min
Eliminate troubles according to the tips in the screen.
Or
Adjust APL valve to SP and choose Accept and then
access to the main menu.
Fail: Fresh gas flow detected
Time out
Treatment measures:
1.
Check if all the pipes are connected well.
2.
Check if the Y-piece port is sealed well.
3.
Check if the water collection cup is installed and
the drain valve is closed well.
4.
Check if the sampling pipe is connected well.
The manual circuit leak test failed.
Fresh gas is detected.
Zero all flowmeters.
Select Retry to repeat the test.
Treatment measure:
Cut off the fresh air.
Test results cannot be displayed due to an internal
communication error.
Select Retry to repeat the automatic circuit leak and
compliance tests.
Or
Select Override to skip the test.
Treatment measures:
1.
Check if all the pipes are connected well.
2.
Check if the Y-piece port is sealed well.
3.
Check if the water collection cup is installed and
the drain valve is closed well.
4.
Check if the sampling pipe is connected well.
NOTE: If there is a leak, check the pneumatic circuit system for leakage and troubleshoot the
problems as described in 5.3 Pneumatic System Problems. Do leak test again after failure
source is fixed,
NOTE: If there is a leak, check the pneumatic circuit system for leakage and troubleshoot the
problems as described in 5.3.4 Breathing System. Do leak test again after leak failure is fixed.
2-23
2.4.2.3 Commonly-encountered Problems and Recommended Actions
The following table lists the commonly-encountered problems and recommends actions for
2.4.2.2Breathing System Leak Test in Manual Ventilation Mode.
Failure description
Possible cause
Recommended action
Leak test failure is
prompted immediately
after [Begin] is selected
(typically, the leak test
requires at least 3
minutes).
The Auto/Manual switch is set to the Manual
position and the message [Manual Vent.] is
prompted.
The reading on the drive gas (O2) pressure
gauge indicates drive gas pressure low (lower
than 200kPa) and the alarm of [Drive Gas
Pressure Low] is produced.
During leak test, the
pressure indicated by
the airway pressure
gauge fails to reach
30cmH2O.
1. Before the leak test, the bellows is not
fully inflated.
2. The Y piece on the breathing tube is not
connected to the test plug.
3. The bellows housing is not properly
installed.
Set the Auto/Manual
switch to the Auto
position
Replace or connect gas
supplies and make sure
that the drive gas
pressure is at 350 to
450kPa.
Check the pneumatic
circuit connections and
re-install the pneumatic
circuit.
2.4.3 O2 Sensor Calibration
NOTE: Perform 21% and 100% O2 calibrations before using A5 for the first time. The O2
sensor is not calibrated before delivery.
NOTE: Calibrate the O2 sensor again when a great deviation of O2 concentration monitored
value occurs, or when the O2 sensor or valve drive board is replaced, or when the anesthesia
system gives a prompt message.
NOTE: Before calibration, check if the O2 sensor displays numerics on the measure screen.
If not, check the O2 sensor connection line or replace the O2 sensor until measure numerics
are displayed.
2.4.3.1 21% O2 Calibration
Follow these steps to calibrate O2 sensor at 21% O2.
1. Select [Main]> [General]> [Calibrate O2 Sensor], or select [Main]> [System]>
[Calibrate / Check O2 Sensor], or select [Main]> [Service]> [Calibration]> [O2
Sensor] to enter the screen shown below. The [General] tab displays only the O2 sensor
calibration at 21% O2. The [System] and [Service] tabs display the O2 sensor
calibration at 21% O2 and 100% O2, and need passwords. Follow the instructions on the
screen to set the machine. Select [Begin] to start calibration.
2-24
2.
The calibration screen shown below is displayed after [Begin] is selected. During the
calibration, you can select [Cancel] to abort.
2-25
3.
The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
4.
The screen shown below is displayed if the calibration fails. The fonts in red indicate the
fault code. Select [Try Again] to do the calibration again or select [Done] to exit the
calibration screen.
5.
The screen shown below is displayed after a successful calibration. Select [Done] to exit
the calibration screen.
2-26
2.4.3.2 100% O2 Calibration
NOTE 100% O2 calibration must be performed in standby mode.
NOTE 100% O2 calibration can be performed only after a successful 21% O2 calibration.
Follow these steps to calibrate O2 sensor at 100% O2.
1. Enter the standby mode.
2. Select [Main] > [System] > [Calibrate / Check O2 Sensor] or select [Setup] >
[Service] > [Calibration] > [O2 Sensor]. The [System] and [Service] tabs display O2
sensor calibration at 21% O2 and 100% O2 and need passwords. The calibration screen
shown below is displayed after [100%] is selected. Follow the instructions on the screen
to set the machine and select [Next]. Set the Auto/Manual switch to the Auto position.
3.
After [Next] is selected, the calibration screen shown below is displayed. Follow the
instructions on the screen to set the machine.
2-27
4.
After [Next] is selected, the calibration screen shown below is displayed. Follow the
instructions on the screen to set the machine. Wait 2 minutes and ensure that the O2 cell
voltage has stabilized at the maximum value for at least 30s. Select Begin.
5
The calibration screen shown below is displayed after [Begin] is selected. During the
calibration, you can select [Cancel] to abort.
6.
The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
2-28
7.
The screen shown below is displayed if the calibration fails. The fonts in red indicate the
fault code. Select [Try Again] to do the calibration again or select [Done] to exit the
calibration screen.
8.
The screen shown below is displayed after a successful calibration. Select [Done] to exit
the calibration screen.
2-29
2.4.3.3 Commonly-encountered Problems and Recommended Actions
Failure description
After [Begin] is
selected, calibration
failure is prompted
very soon.
Possible Cause
Recommended Action
If the alarm [O2 Sensor
Unconnected] is displayed, it
indicates that O2 sensor is not
connected.
Connect the O2 sensor.
O2 supply pressure is insufficient
(lower than 200kPa).
21% O2 calibration is not completed
before 100% O2 calibration.
Calibration failure is
prompted about 3
minutes after
calibration is
started.
O2% count value is not within the
normal range (450 to 2700).
Change or connect the gas supply
and make sure that O2 supply
pressure is sufficient.
Perform 100% O2 calibration
after 21% O2 calibration is
completed.
Replace the O2 sensor.
2.5 Gas Supply Leak Tests
Fully close the three needle valves before doing the following tests.
2.5.1 N2O Cylinder Leak Test
1. Remove the N2O line pressure hose from the line pressure inlet on the A5.
2. Mount a full N2O cylinder to the rear panel yoke. If necessary, place a new clean tank
washer between the cylinder and the yoke to minimize any leaks at the yoke connection.
3. Open the N2O cylinder until its pressure gauge indicates cylinder pressure.
4. Close the N2O cylinder.
5. The N2O cylinder pressure gauge should not drop more than 10% of its initial pressure
over one minute.
2.5.2 O2 Cylinder Leak Test
1. Remove the O2 line pressure hose from the line pressure inlet on the A5.
2. Mount a full O2 cylinder to the rear panel yoke. If necessary, place a new clean tank
washer between the cylinder and the yoke to minimize any leaks at the yoke connection.
3. Open the O2 cylinder until its pressure gauge indicates cylinder pressure.
4. Close the O2 cylinder.
5. The O2 cylinder pressure gauge should not drop more than 10% of its initial pressure over
one minute.
2.5.3 AIR Cylinder Leak Test
1. Remove the AIR line pressure hose from the line pressure inlet on the A5.
2. Mount a full AIR cylinder to the rear panel yoke. If necessary, place a new clean tank
washer between the cylinder and the yoke to minimize any leaks at the yoke connection.
3. Open the AIR cylinder until its pressure gauge indicates cylinder pressure.
4. Close the AIR cylinder.
5. The AIR cylinder pressure gauge should not drop more than 10% of its initial pressure
over one minute.
2-30
2.5.4 N2O Pipeline Supply Pressure Leak Test
NOTE

Remove the N2O cylinder from the N2O cylinder yoke when doing this test.
1.
Connect the machine to the N2O supply connector and O2 supply connector on the wall
via N2O supply hose and O2 supply hose.
Check that the N2O supply pressure gauge displays 280~600Kpa.
Turn on the system switch.
Open the O2 needle valve. Adjust the flow to 1L/min to fully open the N2O needle
valve.
Observe the float of total flowmeter, which should fall between 3L and 5L.
Disconnect the N2O pipeline supply.
Check that the N2O supply pressure gauge decreases to zero.
2.
3.
4.
5.
6.
7.
2.5.5 O2 Pipeline Supply Pressure Leak Test
NOTE

Remove the O2 cylinder from the O2 cylinder yoke when doing this test.
1.
2.
3.
4.
5.
6.
7.
Connect the machine to the O2 supply connector on the wall via O2 supply hose.
Check that the O2 supply pressure gauge displays 280~600Kpa.
Turn on the system switch.
Fully open the O2 needle valve.
Observe the float of total flowmeter, which should be at the top of the flowmeter.
Disconnect the O2 pipeline supply.
Make sure that the alarms of [O2 Supply Failure] and [Drive Gas Pressure Low]
occur with the decrease of O2 pressure.
Check that the O2 supply pressure gauge decreases to zero.
8.
2.5.6 Air Pipeline Supply Pressure Leak Test
NOTE

Remove the Air cylinder from the Air cylinder yoke when doing this test.
1.
2.
3.
4.
5.
6.
7.
Connect the machine to the Air supply connector on the wall via Air supply hose.
Check that the Air supply pressure gauge displays 280~600Kpa.
Turn on the system switch.
Fully open the Air needle valve.
Observe the float of total flowmeter, which should be at the top of the flowmeter.
Disconnect the Air pipeline supply.
Check that the Air supply pressure gauge decreases to zero.
2-31
2.6 Breathing System Checks
2.6.1 AGSS Test (if available)
1. Connect one end of the waste gas exhaust hose to the port on the waste gas scavenging
assembly and the other end to the EVAC port.
NOTE: If other type of waste gas scavenging system is used for the anesthesia system,
make sure that the waste gas enters this scavenging system after emitting from the
EVAC port.
2. Connect the respiratory gas monitor exhaust port to the sample gas return port.
3. Make sure that the flow of waste gas scavenging system can be adjusted between the
minimum and maximum scales.
2.6.2 Internal Gas Connections Test
1. Close and remove all gas cylinders from the A5
2. Connect only the AIR pipeline supply hose to the A5 from the wall supply. Leave all other
pipeline supply hoses disconnected.
3. With the A5 powered on, rotate the AIR flow control knob to ensure a continuous flow
increase throughout its full range
4. Fully rotate the N2O flow control knob and verify that there is no flow.
5. Fully rotate the O2 flow control knob and verify that there is no flow.
6. Disconnect the AIR pipeline supply hose from the A5, and connect the O2 pipeline supply
hose from the wall supply, rotate the O2 flow control knob to ensure a continuous flow
increase throughout its full range.
7. Fully rotate the N2O flow control knob and verify that there is no flow.
8. Fully rotate the AIR flow control knob and verify that there is no flow.
9. Connect the N2O pipeline supply hose from the wall supply. With the O2 flow control
knob fully opened, rotate the N2O flow control knob to ensure a continuous flow
increase throughout its full range.
NOTE: The maximum N2O flow must be between 10 and 12L/min.
10. Fully rotate the AIR flow control knob and verify that there is no flow.
2.6.3 Alarm of Drive Gas Pressure Low, O2&N2O Cutoff
Functional Test
1. Set the O2 flow to 2L/min using the flow control valve.
2. Set the N2O flow to 2L/min using the flow control valve.
3. Set the AIR flow to 2L/min using the flow control valve.
4. Interrupt the O2 supply for the A5.
5. Verify that N2O and O2 stop flowing within two minutes and that AIR (if available)
continues to flow at 2L/min.
6. Verify the following alarms are activated:
 O2 Supply Failure appears on the screen
 An alarm tone sounds.
2-32
2.7 Performance Verification
2.7.1 Standby Mode Ventilation Test
1. Ensure that the gas pressures of O2, N2O, and AIR are within the range of specifications.
2. Power on the anesthesia system.
3. Perform the startup test as per the on-screen instructions. Ensure successful completion.
4. Set the Auto/Manual switch to the Manual position.
5. Attach a breathing circuit and test lung to the Y piece of the breathing circuit.
NOTE: For testing purpose always use a reusable breathing circuit.
6. Set the APL valve to approximately 15cmH2O.
7. Set the AIR flow to 5L/min using the flow control valve. Use O2 if AIR is not available.
8. Squeeze the breathing bag once every 10 seconds to inflate and deflate the test lung so as
to produce pressure of approximately 20cmH2O.
9. Verify the inflation and deflation of the test lung.
2.7.2 Manual Mode Ventilation Test
1. Set the Auto/Manual switch to the Manual position to switch to manual mode
2. Set the APL valve to approximately 25cmH2O. Push the O2 flush button to fill the
breathing bag.
3. Set the AIR flow to 1L/min using the flow control valve.
4. Squeeze the breathing bag once every 3 seconds.
5. Verify the inflation and deflation of the test lung.
6. Verify that an airway pressure waveform and all numeric values appear on screen during
bag compressions.
7. Stop squeezing the breathing bag and set the APL Valve to the open position (SP).
2.7.3 Apnea Alarm Test
1. While in the manual ventilation mode, stop ventilating the test lung.
2. Verify that the following apnea alarm signals are activated at approximately 30 seconds
from the last bag compression (for enterprise standard, it is 20 seconds for SFDA
machine).
 Apnea appears on the screen.
 An alarm tone sounds.
2.7.4 Alarm Silence Test
1. While the apnea alarm is sounding, press the Silence soft key.
2. Make sure that the audio alarm stops and resumes after two minutes.
2.7.5 VCV Adult Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach an adult test lung to the Y piece of the breathing circuit.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 2L/min and set the N2O and AIR flows to the minimum..
5. Set the Auto/Manual switch to the Auto position.
6. Set the ventilating control parameters to:
2-33
Ventilation control parameter
Setting of ventilation control
parameter
Patient type
Vent mode
Vt
Rate
I:E
Tpause
PEEP
Plimit
Adult
VCV
600
8
1:2
10
Off
50
7. Press Set Mode button to begin ventilation.
8. Verify that pressure waveform, Vt, MEAN or PLAT, Rate and MV appear on the screen.
9. Verify the tidal volume displayed on the ventilation test device is within 7% (±42mL) of
the setting value within approximately one minute from the start of ventilation.
10. Verify the tidal volume displayed is within 9% (±54mL) of the setting value within
approximately one minute from the start of ventilation.
11. Verify the measured O2 concentration is at least 97% after 5 minutes.
12. Set the AIR flow to 3L/min and set the N2O and O2 flows to the minimum.
13. Verify the measured O2 concentration is 21% ±3% vol. % after 5 minutes.
2.7.6 VCV Pediatric Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach a pediatric test lung to the Y piece of the breathing circuit.
NOTE: Limit the volume in the test lung to provide sufficient airway pressure to satisfy the
Low Peak Pressure alarm. Or reduce the Peak Pressure alarm limit to a lower value to
prevent the alarm when using an adult test lung.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 2L/min and set the N2O and AIR flows to the minimum.
5. Set the ventilating control parameters to:
Ventilation control parameters
Patient type
Vent mode
Vt
Rate
I:E
Tpause
PEEP
Plimit
Setting of ventilation control
parameter
Pediatric
VCV
120
15
1:2
10
Off
40
6. Press Set Mode button to begin ventilation.
7. Verify that pressure waveform, Vt, MEAN or PLAT, Rate and MV appear on the screen.
8. Verify the tidal volume displayed is within ±18ml of the setting value within
approximately one minute from the start of ventilation.
2-34
9. Verify the delivered volume as measured by ventilation test device at the expiration port, is
within ±15ml of the setting value within approximately one minute from the start of
ventilation.
2.7.7 Airway Disconnection Alarm Test
1. While the ventilator is running, disconnect the expiratory limb from the expiration port on
the breathing system.
2. Verify the following airway pressure disconnection alarm signals are activated:
 Paw Too Low message appears on the screen.
 An alarm tone sounds.
2.7.8 PCV Adult Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach an adult test lung to the Y piece of the breathing circuit.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 3L/min and set the N2O and AIR flows to the minimum.
5. Set the ventilator controls to:
Ventilator Controls
Ventilator Settings
Patient type
Vent mode
VtG
Pinsp
Rate
I:E
PEEP
Tslope
PlimVG
Adult
PCV
Off
15
8
1:2
Off
0.2
NA
6. Press Set Mode button to begin ventilation.
7. Verify the Peak Pressure reading on the display is within ±2cmH2O of the set Pinsp.
8. Verify that the pressure waveform, Vt, MEAN or PLAT, Rate and MV appear on the
screen.
9. Verify that the PEAK value measured by the ventilation test device reaches 15±2.5cmH2O
within five breaths from the start of ventilation.
2.7.9 Pressure Support (PS) Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach an adult test lung to the Y piece of the breathing circuit.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 1L/min and set the N2O and AIR flows to the minimum.
5. Set the ventilator controls to:
Ventilator Controls
Ventilator Settings
Patient type
Vent mode
Adult
PS
2-35
Ventilator Controls
Ventilator Settings
Min Rate
ΔP
Trigger
PEEP
Tslope
4
20
3
Off
0.2
6. Press Set Mode button to begin ventilation.
7. Begin triggering breaths by slightly squeezing the test lung and releasing. Maintain a
continuous breath rate.
8. Verify that a pressure waveform and all ventilation parameters appear on the screen.
9. Verify that the Peak Pressure reading on the display is ±2 of ΔP+PEEP.
10. Stop triggering breaths.
11. Verify that after 15 seconds the ventilator delivers a breath and displays the message
Apnea Ventilation.
12. Verify the system ventilates at a frequency of 4bpm.
2.8 Alarm Function
2.8.1 Setup
1. Ensure that the gas pressures of O2, N2O, and AIR are within the range of specifications.
2. Power on the anesthesia system.
3. Perform the startup test as per the on-screen instructions. Ensure successful completion.
4. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
5. Attach an adult test lung to the Y piece of the breathing circuit.
6. Set the O2 flow to 2L/min and set the N2O and AIR flows to the minimum.
7. Set the ventilating control parameters to:
Ventilation control parameter
Setting of ventilation control
parameter
Patient type
Vent mode
Vt
Rate
I:E
Tpause
PEEP
Plimit
Adult
VCV
600
8
1:2
10
Off
50
8. Press Set Mode button to begin ventilation.
2-36
2.8.2 FiO2 Too Low Alarm Test
1. Set the FiO2 Too Low alarm limit to 50%.
2. Set the AIR flow control valve to 5L/min.
3. Set the O2 flow control to the minimum.
4. Verify the following FiO2 too low alarm signals are activated within three ventilation
cycles:
 FiO2 Too Low message appears on the screen.
 An alarm tone sounds.
5. Set FiO2 Too Low alarm limit to 18%.
6. Verify the alarm signals cease.
2.8.3 FiO2 Too High Alarm Test
1. Set the FiO2 Too High alarm limit to 50%.
2. Set the O2 flow control valve to 5L/min.
3. Set the AIR flow control to the minimum.
4. Verify the following FiO2 Too High alarm signals are activated:
 FiO2 Too High message appears on the screen.
 An alarm tone sounds.
5. Set the FiO2 Too High alarm limit to the maximum value.
6. Verify the alarm signals cease.
2.8.4 Peak Pressure Alarm Test
1. Set the PEAK too low alarm to the minimum value.
2. Set the PEAK too high alarm limit to about 5 to 8 digits below the Peak Pressure displayed
on the screen.
3. Verify the following (high) peak pressure alarms are activated:
a. Paw Too High message appears on the screen.
b. An alarm tone sounds.
c. Inspiration ends and expiration begins as the pressure meets the high alarm limit.
4. Set the PAW too high alarm limit to 65(cmH2O).
5. Verify the alarms signals cease.
6. Set the PAW too low alarm limit to 50(cmH2O).
7. Verify the following (low) peak pressure alarms are activated:
a. Paw Too Low message appears on the screen.
b. An alarm tone sounds.
8. Set the PAW too low alarm limit to 12(cmH2O).
9. Verify the alarm signals cease.
2-37
2.8.5 MV Alarm Test
1. Set the MV Too Low alarm limit to the maximum value.
2. Verify the following alarms are activated:
 MV Too Low message appears on the screen.
 An alarm tone sounds.
3. Set the MV Too Low alarm limit to the minimum value.
4. Verify the alarm signals cease.
5. Set the MV Too High alarm limit to the minimum value.
6. Verify the following alarms are activated:
 MV Too High message appears on the screen.
 An alarm tone sounds.
7. Set the MV Too High alarm limit to the maximum value.
8. Verify that the alarm signals cease.
2.9 Vaporizer Test
2.9.1 Vaporizer Interlock Test
1. Attach two vaporizers to the vaporizer manifold and lock them in place.
2. Rotate one vaporizer dial to 3%.
3. Verify that the other vaporizer dial is disabled.
4. Set both vaporizer dials to 0.
5. Rotate the other vaporizer dial to 3%.
6. Verify that the first vaporizer dial cannot be rotated.
7. Rotate both vaporizer dials to T and remove both vaporizers.
8. Verify that the locking spring is in good condition.
9. Reconnect both vaporizers to the vaporizer manifold.
2-38
2.9.2 Vaporizer Accuracy Test
1.
2.
3.
4.
5.
Set the APL valve to 70cmH2O.
Put the Auto/Manual switch to the Manual position.
Connect one end of the breathing hose to the expiration port and the other end to the bag
arm.
Connect the sampling tee of the gas analyzer to the inspiration port.
Use a breathing hose to connect the output end of the sampling tee to the scavenging
system.
6.
Verify that the scavenging system is connected to the wall and the float is between MIN
and MAX scales.
7. Mount the vaporizers and fill with anesthetic agent (if necessary).
NOTE: Do not overfill by filling past the indicator line on the vaporizer.
8. Turn on the equipment.
9. Test the vaporizer accuracy per the manufacturer’s instructions.
10. Test each vaporizer in turn.
11. Test all the vaporizers on the vaporizer storage mount.
12. Remove the measuring equipment.
13. Disconnect the waste gas scavenging hose.
NOTE: The vaporizer has deviations due to change of barometric pressure (high altitude).
And the Riken F-211 gas analyzer also has deviations. When testing the vaporizers using the
Riken F-211 gas analyzer, the altitude can be ignored as the deviations cancel each other out.
If using a different gas analyzer, check the effect of change of barometric pressure before
using it in high altitude area.
2-39
2.10 Other Tests
2.10.1 Power Failure Alarm Test
1. Interrupt AC line voltage.
2. Verify that the following alarms are activated:
 An alarm tone sounds.
 Battery in Use message appears on the screen.
3. Connect the anesthesia system to AC line voltage.
4. Verify that the alarm signals cease.
5. Verify the presence of the battery charging icon in the upper right corner of the screen.
2.10.2 Work Light and Auxiliary Gas Supply Backlight Test
1.
2.
3.
4.
Turn on the top-mounted lamps at the bottom of the top plate.
Verify that both lamps are turned on.
Verify that the work light works at the low brightness level when the switch is set to I,
works at the high brightness level when the switch is set to II, and is turned off when the
switch is set to O.
Verify that the auxiliary gas supply backlight can be lit on when the switch is set to both
I and II positions.
2.11 Electric Safety Test
NOTE: Perform electrical safety inspection after servicing or routine maintenance. Before
the electrical safety inspection, make sure that all the covers, panels, and screws are
correctly installed.
NOTE: It is recommended to do electrical safety test once a year.
2.11.1 Test on Auxiliary Electrical Outlet
Verify that there is mains power voltage on every auxiliary electrical outlet when the
anesthesia machine is connected to the mains power supply.
2-40
2.11.2 Electrical Safety Inspection
1.
2.
3.
Perform protective earth resistance test:
a. Plug the probes of the analyzer into the protective earth terminal and equipotential
terminal of the AC power cord.
b. Test the earth resistance with a current of 25A.
c. Verify the resistance is less than 0.1ohms (100 mohms).
d. Plug the probes of the analyzer into the protective earth terminal of the AC power
cord and the protective earth terminal of any auxiliary outlet. Repeat steps b and c.
e. If the resistance is greater than 0.1ohms (100 mohms) but less than 0.2ohms (200
mohms), disconnect the AC power cord and plug the probe that is previously plugged in
the protective earth terminal of the AC power cord into the protective earth contact of
the power outlet. Repeat steps a to d.
Perform the following earth leakage current tests:
 normal polarity
 reverse polarity
 normal polarity with open neutral
 reverse polarity with open neutral
Verify that the maximum leakage current does not exceed 500 μA (0.5 mA) in the first
two tests. While for the last two tests, verify that the maximum leakage current does not
exceed 1000 μA (1 mA).
NOTE: Make sure the safety analyzer is authorized by certificate organizations (UL, CSA, or
AMAI etc.). Follow the instructions of the analyzer manufacturer.
2.11.3 Electrical Safety Inspection Form
Location:
Technician:
Equipment:
Control Number:
Manufacturer:
Model:
SN:
Measurement equipment /SN:
Date of Calibration:
Inspection and Testing
Pass/F
ail
1
2
3
Auxiliary mains socket outlets
Protective Earth Resistance
Ω
Normal
condition(NC)
____μA
Single Fault
condition(SFC)
____μA
Limit
Max 0.1 Ω
Max:
NC: 500μA
SFC: 1000μA
Earth
Leakage
2-41
For routine maintenance, all the test items included in the ELECTRICAL SAFETY
INSPECTION FORM shall be performed. The following table specifies test items to be
performed after the equipment is repaired after disassembled.
When power board, transformer, or patient
circuit board is not repaired or replaced.
When power board or transformer is
repaired or replaced.
Test items: 1, 2
Test items: 1, 2, 3
2-42
3 Equipment Maintenance
3.1 Repair Policy
The following table lists equipment maintenance operations of the A5 anesthesia system.
Physical check, consumables replacement, and performance check shall be conducted at
regular intervals according to the schedule listed in the following table. The factory will bear
no liability if some parts are damaged or lost because the consumables are not replaced
within the suggested schedule. The preceding contents are described in Equipment
Maintenance Schedule (see section 3.3).
3.2 Periodical Maintenance Kit
The periodical maintenance kit contains:

Basic maintenance kit (12-month), P/N: 115-036367-00.

Expand maintenance kit (12-month), P/N: 115-036368-00.

Complete maintenance kit (12-month), P/N : 115-036369-00
Remarks: For details about the differences of maintenance kits (12-month), see section 3.5
"Maintenance Kit (12-month) Replacement".
3.3 Equipment Maintenance Schedule
Maintenance operation
After each
maintenance
Preoperative checklist:
1. Check the mechanical ventilation state
2. Breathing system leak test under mechanical ventilation state
3. Breathing system leak test under manual ventilation state
4. Check the correctness of sensor zero point
5. Check the flow sensor measurement accuracy
6. Check the pressure sensor measurement accuracy
7. Check the electronic flowmeter measurement accuracy
System check
Consumables replacement
Functional test
Preoperative test
3-1
Every 12
months
●
●
●
●
●
●
3.4 Pre-operation test
Cosmetic inspection
1.
Make sure that the equipment is in good condition.
2.
Make sure that the breathing system and Pre-pak absorbent canister are connected
correctly.
3.
Make sure that there is appropriate amount of anesthetic agent inside the vaporizer.
4.
Make sure that the preoperative checklist is available.
5.
Make sure that the cylinder wrench is available.
6.
Make sure that the AGSS transfer tube is not damaged. Drain the water build-up.
7.
Make sure that the AC power cord is not damaged.
3.5 Maintenance Kit (12-month) Replacement
The following table lists the parts to be replaced periodically inside the periodical
maintenance kit. The replacement date starts from the date when the machine is assembled.
Remark: The materials in the form below are not sold separately. Please contact the engineer
if any questions.
P/N
Material Description
Quantity
0348-00-0185
Special seal
Sealing O-ring, 15.54X2.62,
fluorubber, A70
Pre-pak absorbent canister
sealing
Sealing O-ring, 16X2,
fluorubber A50, black
Sealing O-ring, 8.5X2,
fluorubber, A70
Sealing O-ring, 4.7X1.8,
fluorubber, A70
Pre-pak absorbent canister
sealing
Bypass trigger board sealing
Pop-off rubber cushion
AGSS filter
Pre-pak absorbent canister
tube
Bellow sealing (0631)
O-ring, 14X2.65
Sealing O-ring, 27X1.5,
fluorubber, A50, transparent
Sealing O-ring, 20X1.5
3
Basic
Mainten
ance Kit
(12Month)
Replace
3
Replace
Replace
Replace
1
Replace
Replace
Replace
2
Replace
Replace
Replace
2
Replace
Replace
Replace
4
Replace
Replace
Replace
1
Replace
Replace
Replace
1
1
1
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
1
Replace
Replace
Replace
1
4
Replace
Replace
Replace
Replace
Replace
Replace
2
Replace
Replace
Replace
2
Replace
Replace
Replace
082-000673-00
049-000143-00
M6M-010058--082-000665-00
082-000667-00
049-000145-00
049-000142-00
049-000240-00
082-000506-00
049-000146-00
049-000243-00
082-000934-00
082-001501-00
082-001503-00
3-2
Expand
Mainten
ance Kit
(12Month)
Replace
Complete
Maintenan
ce kit (12Month)
Replace
fluorubber, A50 transparent
Sealing O-ring, 8.5X2,
082-001525-00
1
Replace Replace Replace
fluorubber, A50, transparent
Sealing O-ring, 23.47X2.95,
082-001504-00
3
Replace Replace Replace
fluorubber, A50, transparent
Sealing O-ring, 10.72X1.78,
082-001524-00
1
Replace Replace Replace
fluorubber A50, transparent
Filter 0.45 um,
082-000423-00
1
Replace Replace Replace
TP026AATV004AD01
Sealing O-ring, 20.29X2.62,
082-001508-00
1
Replace Replace Replace
fluorubber, A50, transparent
045-000241-00
Air filter (0631)
1
Replace Replace Replace
Folding bag, neoprene,
040-000358-00
1
/
Replace Replace
black, 8 folds
0611-10-45654
O2 sensor, MedicelMOX-2
1
/
/
Replace
Expiratory flow sensor
115-008263-00
1
/
/
Replace
assembly
Inspiratory flow sensor
115-008262-00
1
/
/
Replace
assembly
Replace the maintenance materials inside the maintenance kit. Replacement may not be
required if the machine is not configured.
(1) Drive gas and AGSS outlet sealing ring (M6M-010058---), quantity: 2
Drive gas and AGSS outlet
sealing ring
(2) Fresh gas inlet and ACGO sealing ring (082-000665-00), quantity: 2
Fresh gas inlet and ACGO
sealing ring
3-3
(3) Sampled gas interface sealing ring (082-000667-00), located inside the interface, quantity:
4.
Sampled gas interface
sealing ring
(4) Bellow cover sealing (049-000243-00), quantity: 1; folding bag (040-000358-00),
quantity: 1
Folding bag
Bellow cover sealing
(5-1) Manual support arm assembly sealing ring (082-000673-00), quantity: 2
Manual support arm
assembly sealing ring
(5-2) O2 battery sealing ring (082-000673-00), quantity: 1
O2 battery
sealing ring
3-4
(6) Airway pressure gauge (082-001524-00), quantity: 1
Airway pressure gauge
(7) POP-OFF valve, quantity: 1
POP-OFF valve
(8) Folding bag base sealing ring (082-001508-00), quantity: 1
Folding bag base sealing ring
3-5
(9) Valve cover sealing ring (082-001501-00), quantity: 2
Valve cover sealing
ring
(10) Valve sealing ring (082-001503-00), quantity: 2
Valve sealing ring
(11) O2 battery port sealing ring (082-001525-00), located on the lower cover assembly,
requiring patient circuit dismantling, quantity: 1
O2 battery port sealing ring
3-6
(12) External absorbent canister sealing (049-000143-00), quantity: 1
External absorbent canister sealing
(13) Internal absorbent canister sealing (049-000145-00) (cut the redundant part after
replacement), quantity: 1
Internal absorbent canister
sealing
(14) Bypass trigger board sealing (049-000142-00), quantity: 1
Bypass trigger board sealing
3-7
(15-1) Bypass sealing ring (082-001504-00), quantity: 2
Bypass sealing ring
(15-2) Water collection cup sealing ring (082-001504-00), quantity: 1
Water collection cup sealing
ring
(16) Absorbent canister tube (049-000146-00), quantity: 1
Absorbent canister
tube
3-8
(17) Vaporizer support sealing ring (082-000934-00) (After the sealing rings are replaced,
install the vaporizer vertically in the horizontal direction. Fasten the vaporizer when it is in
position.), quantity: 4
Vaporizer support
sealing ring
(18) Cylinder support sealing (0348-00-0185), quantity: 3
Cylinder support sealing
(19) Filter (082-000423-00) (Internal AG module filter. After replacement, fix the filter with
2.5 mm x 10 mm ties.), quantity: 1
Filter
3-9
(20) AGSS filter (082-000506-00), quantity: 1
AGSS filter
(21) Air filter (045-000241-00), quantity: 1
Air filter
(22) Expiratory flow sensor assembly (115-008263-00), quantity: 1; inspiratory flow sensor
assembly (115-008262-00), quantity : 1
Expiratory flow
sensor assembly
Inspiratory flow sensor
assembly
3-10
(23) O2 sensor MedicelMOX-2 (0611-10-45654), quantity: 1
MOX-2 O2 sensor
3.6 Functional Tests
Refer to 4 Calibration if any values are out of specification.
NOTE: The anesthesia system (use AC power instead of battery) must be turned on for at
least one hour before performing ventilation test.
3.6.1 Gas Delivery System Tests
3.6.1.1 O2 Flush Verification
1. Connect the bag arm to the expiratory port via a breathing hose.
2. Set the Auto/Manual switch to the Manual position. Set the APL valve to 75.
3. Connect the flowmeter to the inspiratory port.
4. Verify that the O2 flush flow is between 35 and 50 L/min when the O2 flush valve is
pressed.
3.6.1.2 O2:N2O Ratio System
1. Set the O2 and N2O flow control valves to minimum.
2. Rotate the O2 flow control valve until the flowmeter displays 1L/min.
3. Rotate the N2O flow control valve and adjust N2O flow to maximum.
4. Verify that the N2O flow is not greater than 3.7L/min.
5. Decrease the N2O flow to minimum.
6. Decrease the O2 flow to minimum.
3.6.2 Breathing System Leak Test
NOTE: Perform leak test again each time after servicing the anesthesia machine, replacing
the components, or re-connecting the tubes.
3-11
3.6.2.1 Automatic Circuit Leak and Compliance Test
This test checks if the pneumatic circuit has leakage in mechanical ventilation mode. The test
items include bellows, drive gas circuit, CO2 absorber canister, patient tube, flow sensor, and
flow sensor connector.
The following figure shows the Automatic Circuit Leak & Compliance Test screen.
To perform an automatic circuit leak test,
NOTE: The system records the result of the last automatic circuit leak test in the General tab,
including if the test result is passed or failed, or the test is skipped. To view the last test result,
select [Main] > [General] on the main screen.
NOTE: If fresh gas is detected by the system before undergoing the automatic circuit leak
and compliance test, a message is displayed on the screen for zeroing all flowmeters.
1. From system power-up:
If the system is being powered on, the system automatically initiates a system self test and
then enters the Automatic Circuit Leak Test screen.
Or
From the main screen:
Select Main > General > Test Leak/Compliance.
2. Follow the directions on the screen.
NOTE: The Continue button can be selected only when the Auto/Manual switch is set
to the Auto position and no fresh gas is detected.
3-12
NOTE: The result of automatic circuit leak and compliance test is recorded in Service
Log. To view the test result, select [Main] > [Service] > [Review Logs] > [Service] on
the main screen.
3.6.2.2 Manual Circuit Leak Test
This test checks if the pneumatic circuit has leakage in manual ventilation mode. The test
items include APL valve, check valve, CO2 absorber canister, patient tube, flow sensor, and
flow sensor connector.
The following figure shows the Manual Circuit Leak Test screen.
To perform a manual circuit leak test,
NOTE: The Continue button can be selected only when the Auto/Manual switch is set
to the Manual position and no fresh gas is detected.
1.
From system power-up:
If the system is being powered on, the system automatically initiates a system self test
followed by automatic circuit leak and compliance tests.
Or
From the main screen:
Select [Main] > [General] > [Test Leak/Compliance].
2. Follow the directions on the screen.
3-13
NOTE: The Continue button can be selected only when the Auto/Manual switch is set
to the Manual position and no fresh gas is detected.
NOTE: The result of manual circuit leak test is recorded in Service Log. To view the
test result, select [Main] > [Service] > [Review Logs] > [Service] on the main screen.
NOTE: If there is a leak, check the pneumatic circuit system for leakage and
troubleshoot the problems as described in 5.3 Pneumatic System Problems. Do leak test
again after failure source is fixed,
NOTE: If there is a leak, check the pneumatic circuit system for leakage and
troubleshoot the problems as described in 5.3.4 Breathing System. Do leak test again
after leak failure is fixed.
3.6.2.3 Commonly-encountered Problems and Recommended Actions
The following table lists the commonly-encountered problems and recommends actions for
3.6.2.1.
Failure description
Possible cause
Recommended action
Leak test failure is
prompted immediately
after [Begin] is selected
(typically, the leak test
requires at least 3
minutes).
The Auto/Manual switch is set to the Manual
position and the message [Manual Vent.] is
prompted.
The reading on the drive gas (O2) pressure
gauge indicates drive gas pressure low (lower
than 200kPa) and the alarm of [Drive Gas
Pressure Low] is produced.
During leak test, the
pressure indicated by
the airway pressure
gauge fails to reach
30cmH2O.
1. Before the leak test, the bellows is not
fully inflated.
2. The Y piece on the breathing tube is not
connected to the test plug.
3. The bellows housing is not properly
installed.
Set the Auto/Manual
switch to the Auto
position
Replace or connect gas
supplies and make sure
that the drive gas
pressure is at 350 to
450kPa.
Check the pneumatic
circuit connections and
re-install the pneumatic
circuit.
3-14
3.6.3 Check the Sensor Zero Point
To check the sensor zero point:
1. Turn off all fresh gases and position the Y piece in the patient circuit to the air.
2. Make sure that the system is in Standby mode.
3. Select Main -> Service-> Data Monitors-> Component-> Zero Sensor to access the
following menu.
4.
The second column is the current sensor zero point and the third column is the zero
point saved before delivery.
Zero Point Range of DSP Plateau:
The following table lists the normal range of the zero point of some of A5 pressure and flow
sensors.
3-15
Sensor name
Airway pressure sensor
PEEP pressure sensor
Inspiratory flow sensor
Expiratory flow sensor
Internal flow sensor
Normal range of zero point (AD Counts)
7432~16206
7432~16206
554~26457
554~26457
554~26457

The zero point A/D value of the airway pressure sensor and PEEP pressure sensor
should fall within the normal range of 7432 to 16206.

The zero point A/D value of internal flow sensor, the inspiratory flow sensor and
expiratory flow sensor should fall within the normal range of 554 to 26457.
If there is a great deviation between the current zero point and the zero point in case of
factory calibration, it indicates that the sensor is ageing but it does not mean that normal
measurement cannot be performed.
If the current zero point is found to exceed the specified normal range, normal measurement
is affected and you need to calibrate the zero point again. If the zero point of the flow sensor
is not within 554 to 26457 and that of the pressure sensor not within 7432 to 16206, replacing
the VCM. For internal flow sensor, replace the flow sensor interface board.
Zero Point Range of EPSON Plateau:
The following table lists the normal range of the zero point of some of A5 pressure and flow
sensors.
Sensor name
Airway pressure sensor
PEEP pressure sensor
Inspiratory flow sensor
Expiratory flow sensor
Internal flow sensor
Normal range of zero point (AD Counts)
200~800
200~800
50~1800
50~1800
100~400

The zero point A/D value of the airway pressure sensor and PEEP pressure sensor
should fall within the normal range of 200 to 800.

The zero point A/D value of the inspiratory flow sensor and expiratory flow sensor
should fall within the normal range of 50 to 1800.

The zero point A/D value of the internal flow sensor should fall within the normal range
of 100 to 400.
3-16
If there is a great deviation between the current zero point and the zero point in case of
factory calibration, it indicates that the sensor is ageing but it does not mean that normal
measurement cannot be performed.
If the current zero point is found to exceed the specified normal range, normal measurement
is affected and you need to calibrate the zero point again. If the zero point of the flow sensor
is not within 0 to 2000 and that of the pressure sensor not within 0 to 1200, replacing the
VCM. For internal flow sensor, replace the flow sensor interface board.
NOTE: If the zero point of the pressure sensor has an error, in ventilation status, the baseline
of the Paw waveform is not at the zero point and a great deviation occurs between pressure
control and measurement.
NOTE: If the zero point of the inspiratory/expiratory flow sensor has an error, in ventilation
status, the baseline of the flow waveform is not at the zero point and a great deviation occurs
between TV control and measurement.
NOTE: If the zero point A/D value of any sensor is outside of the normal range, it cannot be
corrected. The valve drive board must be replaced.
3.6.4 Check the Accuracy of Flow Sensors
NOTE: If a great deviation of Vt measured value occurs, test the measurement accuracy of
flow sensors to determine whether to perform flow calibration again.
NOTE: You can use any flowmeter that has an accuracy of at least ±2% for the accuracy
measurement of flow sensors.
To check the measurement accuracy of flow sensors:
1.
Remove the bellows and water collection cup.
2
The pneumatic connections between the anesthesia machine and calibration device are
as shown below. You can connect the tube to the high-flow connector or low-flow
connector based on the requirement.
High-flow
connector
Low-flow
connector
Calibration Device (VT Plus)
3-17
3.
Set up the calibration device as described below.
a.
Flow Setting: Press the Flow button on the front control panel of the calibration device.
You can set Range to High Flow or Low Flow as required.
b.
Gas Setting: Press the Setup button, select Setting->ENTER->Gas Settings>MODIFY->Gas Type->O2.
3-18
c.
Select BACK→BACK→BACK.
4.
When the system is Standby, select Main -> Service-> Diagnostic Tests->Valves to
access the following menu.
5.
Set safety valve to ON.
6.
Set the PEEP valve pressure to 30cmH2O.
7.
Set the Insp Valve Flow to the following values:
(3±0.5)L/min, (10±1)L/min, (20±1)L/min, (30±2)L/min, (60±3)L/min.
3-19
8.
Make sure that the deviation between the measured data of inspiratory flow sensor,
expiratory flow sensor, and internal flow sensor and that of the anesthesia machine
calibration device cannot exceed 1L/min or 5% of the measured value of the calibration
device, whichever is greater. Otherwise, refer to 4.3.2 Flow Calibration (Factory) to
perform flow calibration again. When testing the flow accuracy of (60±3)L/min, only
compare the accuracy with the inspiratory flow sensor and expiratory flow sensor. It is
no need to compare with the internal flow sensor.
After these steps are completed, re-install the bellows and water collection cup.
3.6.5 Check the Accuracy of Pressure Sensors
NOTE: Generally, measurement deviations do not easily occur to pressure sensors. However,
in case of replacing the valve drive board, solenoid valve assembly, or expiration valve
assembly, you need to perform pressure calibration and check the flow sensor accuracy so as
to confirm the effectiveness of calibration.
NOTE: You can use any flowmeter that has an accuracy of at least ±2% for the accuracy
measurement of pressure sensors.
To check the measurement accuracy of pressure sensors:
1.
Perform pneumatic connections as follows:
The following picture shows a four-way device.
A four-way
device connecting
the sampling lines
for pressure
calibration
3-20
Remove the top cover (3 captive screws).
Remove tube #72 and #9 from the pressure sensor (as shown below).
Connect the four-way tubes to pressure sensor P1 of the monitor board, PEEP pressure
sensor P2, tube marked as #72, and low pressure port of Fluke VT-Plus. Do not connect
tube marked as #9.
A
D
C
B
VT Plus
Low Press +
Calibration Device (VT Plus)
3-21
2.
Set up the calibration device as described below.
a.
Pressure Setting: Press the PRESSURE button on the front control panel of the
calibration device, select Range and then set it to Low Press.
3-22
b.
Gas Setting: Press the Setup button, select Setting->ENTER->Gas Settings->MODIFY>Gas Type->O2.
c. Select BACK→BACK→BACK.
3-23
3.
When the system is Standby, select Main ->Service-> Diagnostic Tests-> Valves to
access the following menu.
4.
Set safety valve to ON.
5.
Set the PEEP valve pressure to the following values:
(5±1)cmH2O, (20±1)cmH2O, (50±1)cmH2O (70±2)cmH2O, (90±2)cmH2O.
6.
Make sure that the deviation between the measured data of the airway pressure sensor,
and PEEP pressure sensor and that of the anesthesia machine calibration device cannot
exceed 1cmH2O or 2% of the measured value of the calibration device, whichever is
greater. Otherwise, refer to 4.3.3 Pressure Calibration (Factory) to perform pressure
calibration again.
3-24
3.7 High Pressure Tests
Close the three needle valves and turn all fresh gas flows to 0 before doing the following tests.
3.7.1 N2O Cylinder Leak Test
1.
Remove the N2O pipeline supply from A5 gas supply inlet.
2.
Make sure that the N2O cylinder has sufficient pressure. Mount the cylinder onto the
cylinder yoke at the rear panel. If necessary, place a new clean sealing cushion between
the cylinder and the yoke to minimize any leak at the yoke connection.
3.
Open the N2O cylinder valve. Read and record the value on the cylinder pressure gauge.
4.
Close the N2O cylinder.
5.
Read and record the value on the cylinder pressure gauge one minute later. The pressure
value displayed on the N2O cylinder pressure gauge cannot decrease by more than 10%
of the initial value.
3.7.2 O2 Cylinder Leak Test
1.
Remove the O2 pipeline supply from A5 gas supply inlet.
2.
Make sure that the O2 cylinder has sufficient pressure. Mount the cylinder onto the
cylinder yoke at the rear panel. If necessary, place a new clean sealing cushion between
the cylinder and the yoke to minimize any leak at the yoke connection.
3.
Open the O2 cylinder valve. Read and record the value on the cylinder pressure gauge.
4.
Close the O2 cylinder.
5.
Read and record the value on the cylinder pressure gauge one minute later. The pressure
value displayed on the O2 cylinder pressure gauge cannot decrease by more than 10% of
the initial value.
3-25
3.7.3 AIR Cylinder Leak Test
1.
Remove the AIR pipeline supply from A5 gas supply inlet.
2.
Make sure that the AIR cylinder has sufficient pressure. Mount the cylinder onto the
cylinder yoke at the rear panel. If necessary, place a new clean sealing cushion between
the cylinder and the yoke to minimize any leak at the yoke connection.
3.
Open the AIR cylinder valve. Read and record the value on the cylinder pressure gauge.
4.
Close the AIR cylinder.
5.
Read and record the value on the cylinder pressure gauge one minute later. The pressure
value displayed on the AIR cylinder pressure gauge cannot decrease by more than 10%
of the initial value.
3.7.4 N2O Pipeline Supply Test
NOTE

Remove the N2O cylinder from the N2O cylinder yoke when doing this test.
1.
Connect the machine to the N2O supply connector and O2 supply connector on the wall
via N2O supply hose and O2 supply hose.
2.
Check that the N2O supply pressure gauge displays 280~600Kpa.
3.
Turn on the system switch.
4.
Open the O2 needle valve. Adjust the flow to 1L/min to fully open the N2O needle
valve.
5.
Observe the float of total flowmeter, which should fall between 3L and 5L.
6.
Disconnect the N2O pipeline supply.
7.
Check that the N2O supply pressure gauge decreases to zero.
3-26
3.7.5 O2 Pipeline Supply Test
NOTE

Remove the O2 cylinder from the O2 cylinder yoke when doing this test.
1.
Connect the machine to the O2 supply connector on the wall via O2 supply hose.
2.
Check that the O2 supply pressure gauge displays 280~600Kpa.
3.
Turn on the system switch.
4.
Fully open the O2 needle valve.
5.
Observe the float of total flowmeter, which should be at the top of the flowmeter.
6.
Disconnect the O2 pipeline supply.
7.
Make sure that the alarms of [O2 Supply Failure] and [Drive Gas Pressure Low]
occur with the decrease of O2 pressure.
8.
Check that the O2 supply pressure gauge decreases to zero.
3.7.6 AIR Pipeline Supply Test
NOTE

Remove the Air cylinder from the Air cylinder yoke when doing this test.
1.
Connect the machine to the Air supply connector on the wall via Air supply hose.
2.
Check that the Air supply pressure gauge displays 280~600Kpa.
3.
Turn on the system switch.
4.
Fully open the Air needle valve.
5.
Observe the float of total flowmeter, which should be at the top of the flowmeter.
6.
Disconnect the Air pipeline supply.
7.
Check that the Air supply pressure gauge decreases to zero.
3-27
3.8 Breathing System Tests
3.8.1 Sample Gas Emission Test/AGSS Test (optional
configuration)
1. Connect one end of the sample gas exhaust emission hose to the port on the waste gas
disposal system. Connect the other end of the hose to the EVAC port on the module.
NOTE: If other type of waste gas scavenging system is used for A5, make sure that
sample waste gas is exhausted from the EVAC port to enter the scavenging system.
2. Connect the module waste gas exhaust port to the fitting port on the waste gas disposal
system.
3. Cover all openings on the waste gas disposal system.
4. Make sure that the flow of waste gas disposal system can be adjusted between the
minimum and maximum scales.
3.8.2 Internal Pneumatic Connection Test
1. Close and remove all gas cylinders from the anesthesia system.
2. Connect only the AIR pipeline supply hose to the anesthesia system. Disconnect all the
other gas supply hoses.
3. Connect A5 to the power supply. Rotate the AIR flow control knob to ensure a continuous
flow increase throughout its full range
4. Fully rotate the N2O flow control knob and verify that there is no N2O flow.
5. Fully rotate the O2 flow control knob and verify that there is no O2 flow.
6. Disconnect the AIR pipeline supply hose from the anesthesia system, and connect the O2
pipeline supply hose. Rotate the O2 flow control knob to ensure a continuous flow
increase throughout its full range.
7. Fully rotate the N2O flow control knob and verify that there is no N2O flow.
8. Fully rotate the AIR flow control knob and verify that there is no AIR flow.
9. Connect the N2O pipeline supply hose. With the O2 flow control knob not fully opened,
rotate the N2O flow control knob to ensure a continuous flow increase throughout its
full range.
NOTE: The maximum N2O flow must be between 10 and 12 L/min.
10. Fully rotate the AIR flow control knob and verify that there is no AIR flow.
3-28
3.8.3 Alarm of Drive Gas Pressure Low, N2O Cutoff Test
1. Set the O2 flow to 2 L/min using the flow control valve.
2. Set the N2O flow to 2 L/min using the flow control valve.
3. Set the AIR flow to 2 L/min using the flow control valve.
4. Interrupt the O2 supply for the A5.
5. Verify that the N2O and O2 stop flowing within 2 minutes and that AIR (if available)
continues to flow at 2 L/min.
6. Verify the following alarms are activated:

O2 Supply Failure appears on the screen

An alarm tone sounds.
3.9 Performance Verification
3.9.1 Standby Mode Ventilation Test
1. Ensure that the gas pressures of O2, N2O, and AIR are within the range of specifications.
2. Power on the anesthesia system.
3. Perform the startup test as per the on-screen instructions. Ensure successful completion.
4. Set the Auto/Manual switch to the Manual position.
5. Attach a breathing circuit and test lung to the Y piece of the breathing circuit.
NOTE: For testing purpose always use a reusable breathing circuit.
6. Set the APL valve to approximately 15cmH2O.
7. Set the AIR flow to 5L/min using the flow control valve. Use O2 if AIR is not available.
8. Squeeze the breathing bag once every 10 seconds to inflate and deflate the test lung so as
to produce pressure of approximately 20cmH2O.
9. Verify the inflation and deflation of the test lung.
3-29
3.9.2 Manual Mode Ventilation Test
1. Set the Auto/Manual switch to the Manual position to switch to manual mode
2. Set the APL valve to approximately 25cmH2O. Push the O2 flush button to fill the
breathing bag.
3. Set the AIR flow to 1L/min using the flow control valve.
4. Squeeze the breathing bag once every 3 seconds.
5. Verify the inflation and deflation of the test lung.
6. Verify that an airway pressure waveform and all numeric values appear on screen during
bag compressions.
7. Stop squeezing the breathing bag and set the APL Valve to the open position (SP).
3.9.3 Apnea Alarm Test
1. While in the manual ventilation mode, stop ventilating the test lung.
2. Verify that the following apnea alarm signals are activated at approximately 30 seconds
from the last bag compression (for enterprise standard, it is 20 seconds for SFDA
machine).

Apnea appears on the screen.

An alarm tone sounds.
3.9.4 Alarm Silence Test
1. While the apnea alarm is sounding, press the Silence soft key.
2. Make sure that the audio alarm stops and resumes after two minutes.
3.9.5 VCV Adult Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach an adult test lung to the Y piece of the breathing circuit.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 2L/min and set the N2O and AIR flows to the minimum.
5. Set the Auto/Manual switch to the Auto position.
3-30
6.
Set the ventilating control parameters to:
Ventilation control parameter
Setting of ventilation control
parameter
Patient type
Vent mode
Vt
Rate
I:E
Tpause
PEEP
Plimit
Adult
VCV
600
8
1:2
10
Off
50
7. Press Set Mode button to begin ventilation.
8. Verify that pressure waveform, Vt, MEAN or PLAT, Rate and MV appear on the screen.
9. Verify the tidal volume displayed on the ventilation test device is within 7% (±42mL) of
the setting value within approximately one minute from the start of ventilation.
10. Verify the tidal volume displayed is within 9% (±54mL) of the setting value within
approximately one minute from the start of ventilation.
11. Verify the measured O2 concentration is at least 97% after 5 minutes.
12. Set the AIR flow to 3L/min and set the N2O and O2 flows to the minimum.
13. Verify the measured O2 concentration is 21% ±3% vol. % after 5 minutes.
3.9.6 VCV Pediatric Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach a pediatric test lung to the Y piece of the breathing circuit.
NOTE: Limit the volume in the test lung to provide sufficient airway pressure to satisfy the
Low Peak Pressure alarm. Or reduce the Peak Pressure alarm limit to a lower value to
prevent the alarm when using an adult test lung.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 2L/min and set the N2O and AIR flows to the minimum.
3-31
5.
Set the ventilating control parameters to:
Ventilation control parameters
Patient type
Vent mode
Vt
Rate
I:E
Tpause
PEEP
Plimit
Setting of ventilation control
parameter
Pediatric
VCV
120
15
1:2
10
Off
40
6. Press Set Mode button to begin ventilation.
7. Verify that pressure waveform, Vt, MEAN or PLAT, Rate and MV appear on the screen.
8. Verify the tidal volume displayed is within 18ml of the setting value within approximately
one minute from the start of ventilation.
9. Verify the delivered volume as measured by ventilation test device at the expiration port, is
within 15ml of the setting value within approximately one minute from the start of
ventilation.
3.9.7 Airway Disconnection Alarm Test
1. While the ventilator is running, disconnect the expiratory limb from the expiration port on
the breathing system.
2. Verify the following airway pressure disconnection alarm signals are activated:

Paw Too Low message appears on the screen.

An alarm tone sounds.
3.9.8 PCV Adult Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach an adult test lung to the Y piece of the breathing circuit.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 3L/min and set the N2O and AIR flows to the minimum.
5. Set the ventilator controls to:
Ventilator Controls
Ventilator Settings
Patient type
Vent mode
Adult
PCV
3-32
VtG
Pinsp
Rate
I:E
PEEP
Tslope
PlimVG
Off
15
8
1:2
Off
0.2
NA
6. Press Set Mode button to begin ventilation.
7. Verify the Peak Pressure reading on the display is within ±2cmH2O of the set Pinsp.
8. Verify that the pressure waveform, Vt, MEAN or PLAT, Rate and MV appear on the
screen.
9. Verify that the PEAK value measured by the ventilation test device reaches 15±2.5cmH2O
within five breaths from the start of ventilation.
3.9.9 Pressure Support (PS) Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purpose always use a reusable breathing circuit.
2. Attach an adult test lung to the Y piece of the breathing circuit.
3. Attach a ventilation test device between the expiration port and the expiratory hose.
4. Set the O2 flow to 1L/min and set the N2O and AIR flows to the minimum.
5. Set the ventilator controls to:
Ventilator Controls
Ventilator Settings
Patient type
Vent mode
Min Rate
ΔP
Trigger
PEEP
Tslope
Adult
PS
4
20
3
Off
0.2
6. Press Set Mode button to begin ventilation.
7. Begin triggering breaths by slightly squeezing the test lung and releasing. Maintain a
continuous breath rate.
8. Verify that a pressure waveform and all ventilation parameters appear on the screen.
9. Verify that the Peak Pressure reading on the display is ±2 of ΔP+PEEP.
10. Stop triggering breaths.
11. Verify that after 15 seconds the ventilator delivers a breath and displays the message
Apnea Ventilation.
12. Verify the system ventilates at a frequency of 4bpm.
3-33
3.10 Alarm and Automatic Fault Protection Function
3.10.1 Setup
1. Ensure that the pressures of O2, N2O, and AIR are within the specified range.
2. Power on the anesthesia system.
3. Perform the Startup Tests per the on-screen instructions. Ensure successful completion.
4. Attach a breathing circuit and breathing bag.
NOTE: For testing purposes always use a reusable breathing circuit.
5. Attach an adult test lung to the Y-fitting of the breathing circuit.
6. Set the O2 flow to 2 L/min and set the N2O and AIR flows to the minimum.
7. Set the ventilation control parameters to:
Ventilation control parameters
Setting of ventilation control
parameter
Patient Type
Ventilation Mode
Vt
Rate
I:E
Tpause
PEEP
Plimit
Adult
VCV
600
8
1:2
10
Off
50
8. Press Set Mode button to begin ventilation.
3.10.2 FiO2 Too Low Alarm Test
1. Set the FiO2 Too Low alarm limit to 50%.
2. Set the AIR flow control valve to 5L/min.
3. Set the O2 flow control to the minimum.
4. Verify the following FiO2 too low alarm signals are activated within three ventilation
cycles:

FiO2 Too Low message appears on the screen.

An alarm tone sounds.
5. Set FiO2 Too Low alarm limit to 18%.
6. Verify the alarm signals cease.
3-34
3.10.3 FiO2 Too High Alarm Test
1. Set the FiO2 Too High alarm limit to 50%.
2. Set the O2 flow control valve to 5L/min.
3. Set the AIR flow control to the minimum.
4. Verify the following FiO2 Too High alarm signals are activated:

FiO2 Too High message appears on the screen.

An alarm tone sounds.
5. Set the FiO2 Too High alarm limit to the maximum value.
6. Verify the alarm signals cease.
3.10.4 Peak Pressure Alarm Test
1. Set the PEAK too low alarm to the minimum value.
2. Set the PEAK too high alarm limit to about 5 to 8 digits below the Peak Pressure displayed
on the screen.
3. Verify the following (high) peak pressure alarms are activated:
Paw Too High message appears on the screen.
An alarm tone sounds.
Inspiration ends and expiration begins as the pressure meets the high alarm limit.
4. Set the PAW too high alarm limit to 65(cmH2O).
5. Verify the alarms signals cease.
6. Set the PAW too low alarm limit to 50(cmH2O).
7. Verify the following (low) peak pressure alarms are activated:

Paw Too Low message appears on the screen.

An alarm tone sounds.
8. Set the PAW too low alarm limit to 12(cmH2O).
9. Verify the alarm signals cease.
3-35
3.10.5 MV Alarm Test
1. Set the MV Too Low alarm limit to the maximum value.
2. Verify the following alarms are activated:

MV Too Low message appears on the screen.

An alarm tone sounds.
3. Set the MV Too Low alarm limit to the minimum value.
4. Verify the alarm signals cease.
5. Set the MV Too High alarm limit to the minimum value.
6. Verify the following alarms are activated:

MV Too High message appears on the screen.

An alarm tone sounds.
7. Set the MV Too High alarm limit to the maximum value.
8. Verify that the alarm signals cease.
3.11 Vaporizer Test
3.11.1 Vaporizer Interlock Test
1. Attach two vaporizers to the vaporizer manifold and lock them in place.
2. Rotate one vaporizer dial to 3%.
3. Verify that the other vaporizer dial is disabled.
4. Set both vaporizer dials to 0.
5. Rotate the other vaporizer dial to 3%.
6. Verify that the first vaporizer dial cannot be rotated.
7. Rotate both vaporizer dials to T and remove both vaporizers.
8. Verify that the locking spring is in good condition.
9. Reconnect both vaporizers to the vaporizer manifold.
3-36
3.11.2 Vaporizer Accuracy Test
1.
Set the APL valve to 70cmH2O.
2.
Put the Auto/Manual switch to the Manual position.
3.
Connect one end of the breathing hose to the expiration port and the other end to the bag
arm.
4.
Connect the sampling tee of the gas analysis device to the inspiration port.
5.
Use a breathing hose to connect the output end of the sampling tee to the scavenging
system.
6.
Verify that the scavenging system is connected to the wall and the float is between MIN
and MAX scales.
7.
Mount the vaporizers and fill with anesthetic agent (if necessary).
NOTE: Do not overfill by filling past the indicator line on the vaporizer.
8.
Turn on the equipment.
9.
Test the vaporizer accuracy per the manufacturer’s instructions.
10. Test each vaporizer in turn.
11. Test all the vaporizers on the vaporizer storage mount.
12. Remove the measuring equipment.
13. Disconnect the waste gas scavenging hose.
NOTE: The vaporizer has deviations due to change of barometric pressure (high altitude).
And the Riken F-211 gas analyzer also has deviations. When testing the vaporizers using the
Riken F-211 gas analyzer, the altitude can be ignored as the deviations cancel each other out.
If using a different gas analyzer, check the effect of change of barometric pressure before
using it in high altitude area.
3-37
3.11.3 Vaporizer Leak Test
1.
Set the bag/mechanical ventilation switch into bag ventilation switch.
2.
Set ACGO to patient circuit (if ACGO is configured).
3.
Set APL valve to SP.
4.
Connect the bag bellows to the bag arm port.
5.
Connect the Vent Y-piece of the respiratory circuit to the leak test port and connect
another two ports to the expiration port and the inspiration port of the circuit.
Note: When the AG module is configured, the sampling line of the module sample gas should
not be connected to the Y-piece sampling port and ensure that the Y-piece sampling port
is blocked.
6.
Install the vaporizer and lock it in the vaporizer manifold. (In order to ensure the
accuracy of the test, Some vaporizer needs to be set at 1%. Please refer to the factory’s
guide line for specific situation)
7.
Set the fresh air speed at 0.2 L/min.
8.
Set the APL valve to 75 cm H2O.
9.
Press the flushing O2 button till the airway pressure gauge falls at about 30 cm H2O.
10. Loose the flushing O2 button and observe the airway pressure gauge to make sure the
numerical reading would not reduce.
3-38
11. Turn off the vaporizer
12. Repeat step 6 to step 11 on the other vaporizer.
3.13 Other Tests
3.13.1 Power Failure Test
1.
Disconnect the power supply when the machine is under power-on state.
2. Verify that the following alarms are activated:
3.

An alarm tone sounds.

Battery in Use message appears on the screen.
Re-connect the power supply.
4. Verify that the alarm signals cease.
5. Verify the presence of the battery charging icon in the upper right corner of the screen.
1.13.2 Work Light and Auxiliary Gas Supply Backlight Test
1.
Turn on the top light at the bottom of the top plate.
2.
Verify that this lamp can display two level of brightness normally.
3.
Verify that the work light works at the low brightness level when the switch is set to I,
works at the high brightness level when the switch is set to II, and is turned off when the
switch is set to O.
4.
Verify that the auxiliary gas supply backlight can be lit on when the switch is set to both
I and II positions.
3.14 Auxiliary AC Electrical Outlets Test
CAUTION: Perform the electrical safety inspection as the last step after completing a repair
or after routine maintenance. Perform this inspection with all covers, panels, and screws
installed.
Verify that AC voltage is present at each AC electrical outlet with a 3A breaker.
3.14.1 Anesthesia System Installation Checklist
Refer to 2 Installation Guide for the post-installation check items. Complete each step to
check the functions of the anaesthesia machine prior to clinical use. Also, perform the
installation checkout procedure after installation, reinstallation, servicing or after any
periodic maintenance activity. This checklist cannot replace periodic maintenance activities
necessary for maintaining optimal performance.
3-39
3.15 Electric Safety Test
NOTE: Perform electrical safety inspection after servicing or routine maintenance. Before
the electrical safety inspection, make sure that all the covers, panels, and screws are
correctly installed.
NOTE: It is recommended to do electrical safety test once a year.
3.15.1 Test on Auxiliary Electrical Outlet
Verify that there is mains power voltage on every auxiliary electrical outlet when the
anesthesia machine is connected to the mains power supply.
3.15.2 Electrical Safety Inspection
CAUTION: It is recommended to do electrical safety test once a year.
1.
Perform protective earth resistance test:
a. Plug the probes of the analyzer into the protective earth terminal and equipotential
terminal of the AC power cord.
b. Test the earth resistance with a current of 25A.
c. Verify the resistance is less than 0.1ohms (100 mohms).
d. Plug the probes of the analyzer into the protective earth terminal of the AC power
cord and the protective earth terminal of any auxiliary outlet. Repeat steps b and c.
e. If the resistance is greater than 0.1ohms (100 mohms) but less than 0.2ohms (200
mohms), disconnect the AC power cord and plug the probe that is previously plugged in
the protective earth terminal of the AC power cord into the protective earth contact of
the power outlet. Repeat steps a to d.
2.
Perform the following earth leakage current tests:

normal polarity

reverse polarity

normal polarity with open neutral

reverse polarity with open neutral
3.
Verify that the maximum leakage current does not exceed 500 μA (0.5 mA) in the first
two tests. While for the last two tests, verify that the maximum leakage current does not
exceed 1000 μA (1 mA).
4.
If BIS module is configured, perform the following patient leakage current tests:

normal polarity

reverse polarity

normal polarity with open neutral
3-40

reverse polarity with open neutral

normal polarity with open earth

reverse polarity with open earth

normal polarity with mains on AP

reverse polarity with mains on AP
5.
Verify that the maximum leakage current does not exceed 100 μA (0.1 mA) in the first
two tests, does not exceed 500μA (0.5mA) in the middle 4 tests, and does not exceed
5000μA (5mA) in the last two tests.
6.
If BIS module is configured, perform the following patient auxiliary current tests
between each electrode and other electrodes.
7.

normal polarity

reverse polarity

normal polarity with open neutral

reverse polarity with open neutral

normal polarity with open earth

reverse polarity with open earth
Verify that the maximum leakage current does not exceed 100 μA (0.1 mA) in the first
two tests. While for the last two tests, verify that the maximum leakage current does not
exceed 500μA (0.5mA).
NOTE: Make sure the safety analyzer is authorized by certificate organizations (UL, CSA, or
AMAI etc.). Follow the instructions of the analyzer manufacturer.
3-41
3.15.3 Electrical Safety Inspection Form
Location:
Technician:
Equipment:
Control Number:
Manufacturer:
Model:
SN:
Measurement equipment /SN:
Date of Calibration:
Inspection and Testing
Pass/F
ail
1
2
3
4
Auxiliary mains supply output voltage
Earthing impedance
Ω
Maximum: 0.1 Ω
Normal condition
____μA
Single fault
condition
____μA
Normal condition
____μA
Single fault
condition
____μA
Maximum:
Normal condition：
100μA
Single fault
condition：500μA
____μA
Maximum: 5000μA
Normal condition
____μA
Single fault condition
____μA
Maximum:
Normal condition：
100μA
Single fault
condition：500μA
Earth leakage
current
Patient
leakage
current
Limit
5
Applied part plus mains supply
voltage
6
Patient
auxiliary
leakage
current
3-42
Maximum:
Normal condition:
500μA
Single fault condition:
1000μA
For routine maintenance, all the test items included in the ELECTRICAL SAFETY
INSPECTION FORM shall be performed. The following table specifies test items to be
performed after the equipment is repaired after disassembled.
When power board, transformer, or patient
circuit board is not repaired or replaced.
When power board or transformer is
repaired or replaced.
When patient circuit board is repaired or
replaced.
When power board, transformer, and
patient circuit board are all repaired or
replaced.
Test items: 1, 2
Test items: 1, 2, 3
Test items: 1, 2, 4, 5, 6
Test items: 1, 2, 3, 4, 5, 6
3-43
FOR YOUR NOTES
3-44
4 Calibration
4.1 Introduction
This section provides detailed information required to test and calibrate the A5 anesthesia
system. Calibration consists of making mechanical and electrical adjustments with the test
device. The equipment should be tested and calibrated after repairs have been completed or at
regular intervals as part of a periodic maintenance procedure.
NOTE: Functional test must be performed after calibration to verify correct operation.
Before calibration, make sure that all testing materials (including drive gas, breathing circuit,
test fixture, tools and documents) are the latest, calibrated and in good condition.
4.2 Warnings, Precautions, and Notes
4.2.1 Warnings
WARNING: Replace all fuses with the specified type and rating to prevent fire.
WARNING: The machine (protection class I) can be connected only to a correctly grounded
power supply (including the socket with grounding contact) to prevent electric shocks.
WARNING: Remove all auxiliary devices from the shelf before moving the anesthesia
machine on the rough road or any slope. The anesthesia machine with a weight on its top is
likely to tip over, causing personal injuries.
WARNING: To avoid the possible explosion hazard, do not operate the machine near
flammable anaesthetic agents or other flammable substances. Do not use flammable
anesthetic agents such as ether or cyclopropane.
WARNING: When high-frequency electric surgery equipment is used, anti-static or
electrically conductive breathing tubes may cause burns. Therefore, they are recommended at
no time.
WARNING: The electric shock hazard may exist. The machine can be opened only by
authorized service personnel.
WARNING: According to IATA and DOT regulations, compressed gases are dangerous.
Therefore, the packages or transport packages of dangerous goods must be properly identified,
packed, marked, classified, labeled, and documented in accordance with the DOT and IATA
regulations. For details, see the International Air Transport Association – Dangerous Goods
Regulations or Part 171-180 "Transportation" in Title 49 of the Code of Federal Regulations.
4.2.2 Cautions
CAUTION: Refer to Equipment Maintenance Schedule of 3 Equipment Maintenance
when performing scheduled periodic maintenance.
CAUTION: Do not leave gas cylinder valves open if the pipeline gas supply is in use and the
system main switch is at ON position. Otherwise, cylinder supplies could be depleted,
resulting in an insufficient reserve supply in the event of pipeline gas supply failure.
CAUTION: Use cleaning agent sparingly. Excess fluid could enter the machine, causing
damage.
CAUTION: This machine can be operated only by trained and skilled medical personnel
4-1
4.2.3 Notes
NOTE: Only bacterial filters with a low flow resistance can be connected to the patient
module and/or the patient connector.
NOTE: Wear surgical gloves when touching or disassembling valves or other internal
components of the breathing system.
NOTE: Ensure that the gas supply of the machine always complies with technical
specifications.
NOTE: The APL valve and the PAW gauge marker are for reference only. The anesthesia
machine displays the calibrated airway pressure.
NOTE: If the machine malfunctions during initial calibration or testing, do not use it until
the fault is rectified by a professional service technician.
NOTE: After servicing, functional tests, sensor tests, and system tests must be carried out
prior to clinical application.
NOTE: The machine supports up to two vertical mounting brackets to accommodate
additional monitors and other devices. Unauthorized mounting accessories are not
recommended.
NOTE: Ensure that all devices on the top plate of the machine are secured.
4.3 System Calibration
NOTE: The drive gas of the anesthesia machine and the drive gas set in the calibration
device must be consistent with the actual drive gas configured for the machine.
NOTE: If a test item concerning measurement accuracy fails in the system test, perform
relevant calibration.
NOTE: Anesthesia machine calibration device (VT) or Fluke VT Plus: the zero point
(baseline) of pressure measurements may slightly drift with the temperature and time. Users
can perform zeroing manually to eliminate zero offset. In general, zeroing needs to be
performed if the monitor displays a non-zero reading when there is no pressure. Perform
zeroing on the calibration device before making any measurements.
NOTE: You can use anesthesia machine calibration device (VT) or Fluke VT Plus to perform
automatic calibration on pressure sensors or flow sensors, or use other calibration devices
meeting the accuracy requirement to perform manual calibration.
The anesthesia machine provides the functions of monitoring the volume, pressure,
inspiratory O2 concentration, CO2 concentration, and gas concentration inside the machine.
Great measurement deviations of the monitored values are very likely to be caused by the
offset in measured values of relevant measurement components, and calibration needs to be
performed. After the machine is serviced, such as replacement of VCM or expiratory valve
assembly, the flow sensors or pressure sensors of the machine need to be calibrated. The
following table lists the possible calibration items and calibration time.
S/N
Calibration
item
Functional
description
Calibration time
1
Flow
calibration
(user)
Calibrate the flow
sensors of the
breathing system.
2
Flow
calibration
(service)
Calibrates the flow
sensors and
inspiration valve of
the anesthesia
machine.
1. The TV measurement deviation is great (more
than 9% compared with the setting value) after the
flow sensors in the patient circuit have been used
for a long time.
2. The flow sensor in the patient circuit has been
replaced.
1. The expiratory valve assembly is replaced.
2. The VCM is replaced.
3. The measured value of the built-in flow sensor
deviates from that of the flow measuring device by
5% of the reading or 1 L/min, whichever is larger.
4-2
S/N
3
4
5
6
Calibration
item
Pressure
calibration
(service)
Functional
description
Calibrates the
pressure sensors and
PEEP valve of the
anesthesia machine.
Pressure
and flow
zeroing
(service)
Electronic
flowmeter
zeroing
(user)
O2 sensor
calibration
(user)
Calibrates zero
offset in the VCM
and VPM.
Calibrate the
deviation from zero
point of the fresh
flow sensor board.
Calibrate the
accuracy of O2
sensor at 21% and
100% O2.
Calibration time
1. The VCM is replaced.
2. The expiratory valve assembly is replaced.
3. The measured value of the machine's pressure
sensor deviates from that of the standard pressure
gauge by 5% of the reading or 2cmH2O, whichever
is larger.
The flow or pressure waveform deviates from the
baseline.
The electronic flowmeter has a zero point error. The
electronic flowmeter still displays flow readings
when fresh gases are all turned off.
1. The measured value of the O2 sensor has a great
deviation. The deviation exceeds 3% both in Air
(21%) and pure O2 (100%).
2. The O2 sensor is replaced.
3. The VCM is replaced.
4.3.1 Flow Calibration (User)
NOTE: Flow sensor calibration must be performed again after a flow sensor is replaced.
NOTE: The measurement accuracy of flow sensors may be affected by the operating
environment, especially when they have been used for a long time, and the tidal volume
control may also experience a great deviation correspondingly. After-sales engineers can call
users to help them resolve the deviation problem through calibration.
NOTE: Before calibration, perform automatic circuit leak test and make sure that the test is
passed.
NOTE: During calibration, make sure that the drive gas pressure is kept within specifications.
Failure to do so may lead to calibration failure.
This calibration is only intended for the flow sensors in the breathing circuit. The inspiratory
flow sensor and expiratory flow sensor in the breathing system are calibrated through the
machine built-in flow measurement base source
After the inspiratory flow sensor and expiratory flow sensor have been used for several
months, for example, three months after calibration, great deviations (more than 9%
compared with the setting value) may occur to tidal volume measurement due to sensor
ageing or environmental factors. Or, the user replaces flow sensors. In this case, flow
calibration (user) can be adopted.
Follow these steps to calibrate flow sensors.
1. Enter the standby mode.
4-3
2.
Select [Setup] > [Calibrate] > [Calibrate Flow Sensors] (version 1.03.02 and earlier)
or select [Main] > [General]> [Calibrate Flow Sensors] (version 2.01.00 and later) to
enter the screen shown below.
3.
Follow the instructions on the screen to set the machine and select [Next] to enter the
screen shown below.
4.
Select [Begin] to calibrate the flow sensor. During the calibration, you can select
[Cancel] to abort.
4-4
5.
The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
6.
The screen shown below is displayed if the flow sensor calibration fails. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
7.
The screen shown below is displayed upon a successful flow sensor calibration. Select
[Done] to exit the calibration screen.
NOTE: If measurement deviations are not corrected after multiple flow sensor calibrations, it
is recommended that a flow sensor in the circuit be replaced and then a calibration be
performed for the new flow sensor. If the problem persists, send the machine to the
manufacturer for maintenance. After the problem is fixed, perform the calibration and system
tests.
4-5
4.3.2 Flow Calibration (Factory)
NOTE: Flow calibration (factory) is necessary in case of replacing the VCM and expiration
valve assembly.
NOTE: When a great deviation is detected between the measured value of the machine builtin flow sensor and that of the standard flow measurement device, perform flow calibration
(factory).
This calibration is intended for the flow sensors in the breathing circuit, machine built-in flow
sensor, and also inspiration valve. The standard flow measurement device is used to calibrate
the flow sensors and inspiration valve.
4.3.2.1 Calibration Procedures
NOTE: Make sure that the tubes are not leaking when connected.
NOTE: Do not move or press the tubes during calibration.
NOTE: When connecting calibration tubes, make sure that gas flows in the correct direction,
which is from the inspiration connector of the breathing system, through high-flow inlet of
the anesthesia machine calibration device, anesthesia machine calibration device, high-flow
outlet of the anesthesia machine calibration device, and to the expiration connector of the
breathing system.
NOTE: Before calibration, make sure that no sensor or valve related technical alarms are
generated.
NOTE: During calibration, make sure that the drive gas pressure is sufficient. Failure to do
so may lead to calibration failure.
NOTE: You can select anesthesia machine calibration device (VT) or Fluke VT Plus for
automatic calibration. You can also select flow calibration device which satisfies the accuracy
requirement for manual calibration.
NOTE: For calibration device with high and low flow channels, flow channel switchover is
required during automatic or manual calibration. Manual calibration is available for version
1.03.00 and later.
NOTE: When the altitude changes significantly, if the TV precision is out of range,perform
the Flow Calibration (Factory).
4-6
Automatic Calibration
Follow these steps to calibrate flow sensors.
1. Enter the standby mode.
2. Select [Main] > [Service] > [Calibration] > [Flow Sensors] to enter the screen shown
below.
3.
Select [Calibrate Automatically] to enter the screen shown below. Select the required
calibration device.
4-7
4.

Connect the calibration device with the anesthesia machine by using a communication
cable. The calibration device can be anesthesia machine calibration device (VT), Fluke
VT Plus or FPM.
Connectors and settings related to anesthesia machine calibration device (VT) are shown
below.
Calibration
communication
connector
Power connector
High flow outlet port
(0 ~ 120 L/min)
High-flow inlet port
(0 ~ 120 L/min)
Connect the communication connector of the anesthesia machine calibration device with the
anesthesia machine calibration communication connector using the special communication
cable. The anesthesia machine calibration device can communicate with the anesthesia
machine through two types of connection:
The following picture shows A and B, the two special communication cables for anesthesia
machine calibration device.
4-8
Connection 1: Remove the top cover of the anesthesia machine to expose the monitor board.
Use communication cable A to connect the calibration communication connector of the
calibration device with that of the monitor board, as shown below.
Communication cable A for
Calibration communication connector of
anesthesia machine calibration
the monitor board
device
Connection 2: Use communication cable B to connect the calibration communication
connector of the calibration device with that of the anesthesia machine (also the CIS power
connector), as shown below.
Communication cable B for
anesthesia machine calibration device
4-9
 Connectors and settings related to Fluke VTPlus are shown below.
(1).Connect Fluke VTPlus to the power source. The following pictures show the connectors
on Fluke VTPlus.
RS232 connection line
to the calibration device
RS232 connection line to
the anesthesia machine
Calibration fixture
board. Except
connection shown
here, the fixture board
requires additional
USB power supply.
Calibration device (VT Plus) end RS232 connecting wire
4-10
(2).Connect Fluke VTPlus to anesthesia machine. The related connectors are shown below.
RS232 connection
line to the anesthesia
machine
Connection line at the end of anesthesia machine
 The interfaces and settings of FPM are shown as follows:
Anesthesia machine end connection mode is same as Fluke VT Plus.
FPM dedicated calibration line
FPM interface and connection mode
5 Set the calibration device as follows.
 Set VT as follows if VT is selected as the calibration device:
(1) Start the calibration device to enter the startup screen followed by sensor heating screen
(waiting for approximately 5 minutes as required by the prompt message) and then zeroing
screen. Press the “ZERO” key on the panel. After the new screen pops up, press the “OK”
key on the panel to complete zeroing.
(2) Press the “MODE” key on the panel of the calibration device. Select “Calibration Mode”
4-11
from the pop-up menu and then press the “OK” key on the panel to enter calibration screen,
as shown below.
Set Fluke VT Plus as follows if VT Plus is selected as the calibration device:
(1) Gas settings: Press the Setup button, and select Setting->ENTER->Gas Settings>MODIFY->Gas Type->O2->BACK->BACK.
（2）Correction mode: Press the Setup button, and select Setting ->ENTER->Correction
Mode->BTPS->BACK->BACK.
4-12
(3) Zeroing mode settings: Press the Setup button, and select Setting ->ENTER->Zero Mode>Manual->BACK->BACK.
(4) Serial mode settings: Press the Setup button, and select Setting->System->Enter->Serial
Mode ->OTIS Ctrl->BACK->BACK.
(5) The serial mode screen appears after setting VT Plus is completed.
 Set FPM as follows if FPM is selected as the calibration device:
(1) Start the machine and wait until the sensor is pre-heated.
（2）Zero the sensor without connecting any tubes.
4-13
（3）User Setup->Gas Type->O2
（4）User Setup->Measure Mode->BTPS
4-14
6.
Select [Next] to enter the screen shown below.

If VT Plus is selected as the calibration device, select low-flow channel first, as shown
below.
Pneumatic connection with VT Plus

If VT is selected, connect to the large-flow port (0～120 L/min) of the anesthesia
machine calibration device, as shown below.
4-15
Gas flow
direction
Connector for water
collection cup
Pneumatic connection with VT

7.
If FPM is selected, connect to the inspiratory flow sensor port (0～250 L/min) of the
anesthesia machine, as shown below.
Pneumatic connection with FPM
Select [Continue] to enter the screen shown below.
4-16
8.
The screen shown below is displayed after the low-flow channel calibration is
completed.
9.
If VT Plus is selected as the calibration device, connect the high-flow channel of the
calibration device, as shown below.
Pneumatic connection with VT Plus
If VT is selected as the calibration device, there is no need to replace range. Just select
[Continue].
10. Select [Continue] to enter the screen shown below.
4-17
11. The screens shown below are displayed after calibration is completed.
 The screen shown below is displayed if the flow sensor calibration fails. Read details
displayed on the calibration device, locate and rectify the fault. Select [Try Again] to do
the calibration again or select [Done] to exit the calibration screen.

The screen shown below is displayed upon a successful flow sensor calibration. Select
[Done] to exit the calibration screen.
12. The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
4-18
Manual Calibration (01.03.00 and higher)
Follow these steps to calibrate flow sensors.
1. Enter the standby mode.
2. Select [Main] > [Service] > [Calibration] > [Flow Sensors] to enter the screen shown
below.
3.
Select [Calibrate Manually] to enter the screen shown below.
4-19
4.
5.
Connect the inspiration port and expiration port of the anesthesia machine following the
on-screen instruction by referring to step 7 of section Automatic Calibration.
Select [Begin] to enter the screen shown below.
6.
The screen shown below is displayed after the first step of manual calibration is
completed.
7.
Connect the low-flow channel (If available) of calibration device with the pneumatic
circuit of anesthesia machine following the on-screen instructions by referring to step 10
of section Automatic Calibration.
When the calibration device needs to be switched to the high-flow channel, refer to step
13 in "Automatic Calibration" for connection.
8.
NOTE: If the calibration device has multiple channels, refer to the manufacturer's
specifications to know the time for channel switchover
4-20
9.
Select [Continue] to enter the screen shown below. The system calibrates 32 calibration
points one by one. If [Waiting] is displayed in the cell, wait for the system to implement
flow control. If [Input Cal Value] is displayed in the cell, enter the standard flow value
displayed on the calibration device. You can select to re-calibrate any calibration point
during calibration. After entering standard flow values for all the 32 calibration points,
select Accept to check and save the calibration data.
10. Select [Accept]. The screens shown below are displayed.
 The screen shown below is displayed upon a successful flow sensor calibration.
4-21

The screen shown below is displayed if the flow sensor calibration fails.
11. Select [Cancel] The screen shown below is displayed.
NOTE: After flow calibration, check the accuracy of flow sensors by referring to 3.6.4Check
the Accuracy of Flow Sensors.
NOTE: In case of calibration failure, first fix the problem and then perform flow calibration
again.
4.3.2.2 Common Failures and Recommended Actions
Failure Description
Possible Cause
Recommended Action
After Begin is
selected, no ventilation
sound is heard. The
prompt message
"Calibration Failure!
Please try again." is
displayed very soon.
The prompt message "Manual
Vent." is displayed, indicating
that the Auto/Manual switch is
set to the Manual position.
The alarm "Drive Gas Pressure
Low" is generated. The
pressure indicated by the drive
gas (O2) pressure gauge is
lower than 200 kPa.
Zero point error occurs in the
inspiratory/expiratory flow
sensor.
Set the Auto/Manual switch to the
Auto position.
4-22
Change or connect the gas supply to
ensure that the drive gas pressure is
within the specified range.
Replace the VCM.
Failure Description
Possible Cause
Recommended Action
After Begin is
selected, the
ventilation sound is
heard. The prompt
message "Calibration
Failure! Please try
again." is displayed
very soon.
The sampling line of at least
one of the inspiratory flow
sensor, expiratory flow sensor,
and ventilator flow sensor is
not connected or connected
reversely.
The maximum flow is less than
90 L/min when the inspiration
valve is opened.
1. An error occurs in the
pneumatic circuit connection
between the anesthesia
machine calibration device and
the VCM.
2. An error occurs in the
communication connection
between the anesthesia
machine calibration device and
the anesthesia machine.
3. The anesthesia machine
calibration device is set
incorrectly.
Re-connect the sensor sampling line.
The prompt message
"Calibration Failure!
Please try again." is
displayed 15 minutes
after calibration is
started.
Calibration data is incorrect.
[00 00 00 02] is
displayed.
When the flow reaches 90
L/min, the collected AD value
of the inspiratory flow sensor
or expiratory flow sensor is
greater than 3900, which is out
of the normal range.
The drive gas pressure is too
low.
[00 00 00 04] is
displayed.
The Auto/Manual switch is set
to the Manual position.
4-23
Replace the expiration valve
assembly.
1. Check the pneumatic circuit
connection between the anesthesia
machine calibration device and the
VCM. Reconnect the pneumatic
circuit if necessary.
2. Check the communication
connection between the anesthesia
machine calibration device and the
anesthesia machine, or reconnect them
to ensure normal communication.
Replace the communication cable if
the problem persists.
3. Check the settings of the anesthesia
machine calibration device. Set the
anesthesia machine again if necessary.
Replace the inspiratory and expiratory
flow sensors and conduct calibration
again. If calibration still fails, replace
the VCM.
1. Replace the flow sensor in the
circuit.
2. Replace the VCM.
1. Check the drive gas supply.
2. If the gas supply is normal, check
the gas supply pressure switch.
1. Check whether the Auto/Manual
switch is set to the Auto position.
2. Check whether the Auto/Manual
switch can switch normally.
Failure Description
Possible Cause
Recommended Action
[00 00 00 08] is
displayed.
A zero point error occurs in the
inspiratory flow sensor (the AD
value at zero point is larger
than or equal to 2000, or
smaller than 0).
[00 00 00 10] is
displayed.
A zero point error occurs in the
expiratory flow sensor (the AD
value at zero point is larger
than or equal to 2000, or
smaller than 0).
[00 00 00 20] is
displayed.
A zero point error occurs in the
internal flow sensor (the AD
value at zero point is larger
than or equal to 2000, or
smaller than 0).
1. Check whether the fresh gas is
turned off.
2. Check whether the inspiration valve
can be closed tightly. According to the
valve diagnosis tool, after the valve is
closed and the DA value is zero, if the
gas supply is disconnected and then
connected, the AD values of the
ventilator sensor basically remain
unchanged (the reading change does
not exceed 1%), indicating that the
valve is closed tightly.
3. Check the zero point correctness of
the sensor.
4. Replace the VCM.
1. Check whether the fresh gas is
turned off.
2. Check whether the inspiration valve
can be closed tightly. According to the
valve diagnosis tool, after the valve is
closed and the DA value is zero, if the
gas supply is disconnected and then
connected, the AD values of the
ventilator sensor basically remain
unchanged (the reading change does
not exceed 1%), indicating that the
valve is closed tightly.
3. Check the zero point correctness of
the sensor.
4. Replace the VCM.
1. Check the zero point of the sensor.
2. Check whether the inspiration valve
can be closed tightly. According to the
valve diagnosis tool, after the valve is
closed and the DA value is zero, if the
gas supply is disconnected and then
connected, the AD values of the
ventilator sensor basically remain
unchanged (the reading change does
not exceed 1%), indicating that the
valve is closed tightly.
3. Replace the VCM.
4-24
Failure Description
Possible Cause
Recommended Action
[00 00 00 40] is
displayed.
The measurement range of the
inspiratory flow sensor is
abnormal.
[00 00 00 80] is
displayed.
The measurement range of the
expiratory flow sensor is
abnormal.
[00 00 01 00] is
displayed.
The measurement range of the
internal flow sensor is
abnormal.
1. Check whether the sampling line is
connected correctly.
2. Start the valve diagnosis tool in the
calibrated pneumatic connection
environment, close the expiratory
valve based on 4000 DA, open the
inspiration valve gradually, and
observe the measured value of the
calibration device under each DA
value. If the collected AD value of the
inspiratory flow sensor at the time
point with the measured value of the
calibration device close to (smaller
than) 90 L/min is larger than 3900, the
measurement range of the inspiratory
flow sensor is abnormal. Replace the
inspiratory flow sensor.
3. Replace the VCM.
1. Check whether the sampling line is
connected correctly.
2. Start the valve diagnosis tool in the
calibrated pneumatic connection
environment, close the expiratory
valve based on 4000 DA, open the
inspiration valve gradually, and
observe the measured value of the
calibration device under each DA
value. If the collected AD value of the
expiratory flow sensor at the time
point with the measured value of the
calibration device close to (smaller
than) 90 L/min is larger than 3900, the
measurement range of the expiratory
flow sensor is abnormal. Replace the
expiratory flow sensor.
3. Replace the VCM.
1. Check whether the sampling line is
connected correctly.
2. Start the valve diagnosis tool in the
calibrated pneumatic connection
environment, close the expiratory
valve based on 4000 DA, open the
inspiration valve gradually, and
observe the measured value of the
calibration device under each DA
value. If the collected AD value of the
inspiratory flow sensor at the time
point with the measured value of the
calibration device close to (smaller
than) 45 L/min is larger than 3900, the
measurement range of the ventilator
flow sensor is abnormal. Replace the
ventilator flow sensor.
4-25
Failure Description
Possible Cause
Recommended Action
[00 00 02 00] is
displayed.
The inspiratory flow sensor
does not conform to
monotonicity.
[00 00 04 00] is
displayed.
The expiratory flow sensor
does not conform to
monotonicity.
[00 00 08 00] is
displayed.
The internal flow sensor does
not conform to monotonicity.
[00 00 10 00] is
displayed.
The resolution of the
inspiratory flow sensor is
incorrect.
[00 00 20 00] is
displayed.
The resolution of the expiratory
flow sensor is incorrect.
[00 00 40 00] is
displayed.
The resolution of the internal
flow sensor is incorrect.
[00 00 80 00] is
displayed.
The output flow of the valve is
low.
1. Check whether the unidirectional
valve is connected correctly.
2. Check whether the sampling line is
connected correctly.
3. Replace the inspiratory flow sensor.
4. Replace the VCM.
1. Check whether the unidirectional
valve is connected correctly.
2. Check whether the sampling line is
connected correctly.
3. Replace the expiratory flow sensor.
4. Replace the VCM.
1. Check whether the sampling line is
connected correctly.
2. Replace the internal flow sensor.
3. Replace the VCM.
1. Check the connection of the
sampling line as well as the gas
tightness.
2. Check the gas supply pressure.
3. Check the settings of the calibration
device.
4. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
5. Replace the relevant flow sensor in
the circuit.
6. Replace the VCM.
1. Check the connection of the
sampling line as well as the gas
tightness.
2. Check the gas supply pressure.
3. Check the settings of the calibration
device.
4. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
5. Replace the relevant flow sensor in
the circuit.
6. Replace the VCM.
1. Check whether the sampling line is
connected correctly.
2. Replace the internal flow sensor.
3. Replace the VCM.
1. Check whether the gas supply is
sufficient for the whole calibration
process.
2. Check whether the maximum
output flow of the valve is greater
than 90 L/min. If not, replace the
inspiration valve.
4-26
Failure Description
Possible Cause
Recommended Action
[00 01 00 00] is
displayed.
The valve resolution is low.
[00 02 00 00] is
displayed.
The flow change is not
unidirectional.
[00 04 00 00] is
displayed.
The communication with the
calibration device is
interrupted.
[00 08 00 00] is
displayed.
The system fails to write data
into EEPROM.
[00 10 00 00] is
displayed.
The ACGO switch is in the ON
position.
[00 20 00 00] is
displayed.
The maximum value is not
found.
[00 40 00 00] is
displayed.
The minimum value is not
found.
4-27
1. Check whether the gas supply is
sufficient for the whole calibration
process.
2. Check whether the calibration
device works properly.
3. Replace the inspiration valve.
1. Check whether tubes are connected
as instructed.
2. Check whether the gas supply is
sufficient for the whole calibration
process.
3. Check whether the calibration
device works properly.
1. Check the communication
connection between the calibration
device and the anesthesia machine or
reconnect them to ensure normal
communication. Otherwise, replace
the communication cable.
2. Check the settings of the anesthesia
machine calibration device. Do the
settings again if required.
1. Perform the calibration again.
2. Replace the VCM.
1. Check whether the ACGO switch is
set to OFF.
2. Check the monitoring status of the
ACGO switch on the screen of the
anesthesia machine.
diagnosis. (1) Open the inspiration
valve based on 4000 DA. The flow
measured by the calibration device is
larger than or equal to 90 L/min.
(2) Close the inspiration valve,
increase the opening of the inspiration
valve based on a certain DA value.
When the flow measured by the
calibration device is about 80 L/min,
increase 10 DAs to open the valve. If
the flow increase does not exceed 5
L/min, the maximum point (the
software does not find) may exist.
Recalibration is recommended.
2. Replace the inspiration valve.
1. Use the valve diagnosis tool for
diagnosis. Open the inspiration valve
within the 0-2000 DA. If the AD
value collected by the inspiratory flow
sensor increases gradually,
recalibration is recommended.
2. Replace the inspiration valve.
Failure Description
Possible Cause
Recommended Action
[FF FF FF FF] is
displayed.
A communication error occurs.
1. Restart the machine.
2. Check the communication cable.
3. Check whether a communication
error alarm is generated. Replace the
VCM.
4.3.3 Pressure Calibration (Factory)
NOTE: Pressure calibration (factory) is necessary in case of replacing the VCM and
expiration valve assembly.
NOTE: When a great deviation is detected between the measured value of the built-in
pressure sensor and that of the standard pressure measurement device, you need to perform
pressure calibration (factory).
This calibration is intended for the airway pressure sensor in the breathing circuit, PEEP
pressure sensor and PEEP proportional valve of the expiratory valve assembly. The standard
pressure measurement device is used to calibrate the pressure sensors and PEEP proportional
valve.
4.3.3.1 Calibration Procedures
NOTE: Before pressure calibration, make sure that the tubes are not leaky when connected.
NOTE: Do not move or press the tubes during calibration.
NOTE: You can select anesthesia machine calibration device (VT), Fluke VT Plus or FPM
for automatic calibration. You can also select pressure calibration device which satisfies the
accuracy requirement for manual calibration. Manual calibration is available for version
1.03.00 and later.
Automatic Calibration
Follow these steps to calibrate pressure sensors and PEEP proportional valve.
1. Make sure that the anesthesia machine is in standby mode.
2. Select [Main] > [Service] > [Calibration] > [Pressure Sensors] to enter the screen
shown below.
4-28
3.
Select [Calibrate Automatically] to enter the screen shown below.
4.
Use a communication cable to connect the calibration device and the anesthesia machine
by referring to step 4 in 4.3.2.1Calibration Procedures.
Select [Next] to enter the screen shown below.
5.
A four-way device is required to connect sampling tubes for pressure calibration. The
following picture shows the four-way device, connectors on the calibration device, and
VCM involved in the pressure calibration.
Four-way device
connecting
sampling tubes
for pressure
calibration
4-29
Remove two tubes marked with #72 and #9 from the pressure sensors (see the following
figure).
Connect the four-way device to the pressure sensor P1 of the monitor board, PEEP
pressure sensor P2, sampling tube marked with #72, and low-pressure port of Fluke VTPlus (or high pressure sample port of VT, or sample port of FPM). The sampling tube
marked with #9 is not connected for this calibration.
A
D
To the low pressure port of
Fluke VT Plus or high
pressure port of VT
C
B
Pneumatic connection with VT Plus
High pressure sampling port of VT
4-30
For FPM as a calibration device, prepare the following plugs and sampling ports. Connect the
plugs, sampling ports and FPM inspiratory flow sensor ports as shown in the following figure.
Note that the tube length must not exceed 0.6m.
6.
7.
8.
Power on the anesthesia machine calibration device and manually zero the calibration
device.
Set the calibration device.
Refer to step 5 in 4.3.2.1Calibration Procedures.
Select [Next] to enter the screen shown below.
4-31
9.
After selecting the required calibration device, select [Begin] to enter the screen shown
below. During the calibration, you can select [Cancel] to abort.
10. The screens shown below are displayed after calibration is completed.
 The screen shown below is displayed if the pressure sensor calibration fails. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
4-32

The screen shown below is displayed upon a successful pressure sensor calibration.
Select [Done] to exit the calibration screen.
11. The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
4-33
Manual Calibration
NOTE: Manual calibration can be performed for software version 01.03.00 and higher.
Follow these steps to calibrate pressure sensors and PEEP proportional valve.
1. Make sure that the anesthesia machine is in standby mode
2. Select [Main] > [Service] > [Calibration] > [Pressure Sensors] to enter the screen
shown below.
3. Select [Calibrate Manually] to enter the screen shown below.
4-34
4.
5.
6.
7.
Use a communication cable to connect the calibration device and the anesthesia machine
by referring to step 4 in 4.3.2.1Calibration Procedures.
Complete the pneumatic connection by referring to step 5 in Automatic Calibration.
Select [Begin] to enter the screen shown below.
The screen shown below is displayed after the first step of manual calibration is
completed.
4-35
8.
Select [Continue] to enter the screen shown below. The system calibrates 32 calibration
points one by one. Of the 32 calibration points, points 1 to 16 map to the rising curve
while points 17 to 32 map to the falling curve. You can select to recalibrate any
calibration point during calibration. When a calibration point mapped to the falling
curve is calibrated, you cannot change the points mapping to the rising curve. If
[Waiting] is displayed in the cell, wait for the system to implement pressure control. If
[Input Cal Value] is displayed in the cell, enter the standard pressure displayed on the
calibration device. After entering standard pressures of all the 32 calibration points,
select [Accept] to check and save the calibration data.
9.

Select [Accept]. The screens shown below are displayed.
The screen shown below is displayed upon a successful pressure sensor calibration.
4-36

The screen shown below is displayed if the pressure sensor calibration fails.
10. Select [Cancel]. The screen shown below is displayed.
NOTE: After pressure calibration, test the accuracy of pressure sensors by referring to
3.6.5Check the Accuracy of Pressure Sensors.
NOTE: In case of calibration failure, first fix the problem and then perform pressure
calibration again.
4-37
4.3.3.2 Common Failures and Recommended Actions
Failure
Description
After [Begin] is
selected, no
ventilation sound is
heard. The prompt
message
"Calibration
Failure! Please try
again." is displayed
very soon.
After [Begin] is
selected, ventilation
sound is heard. The
prompt message
"Calibration
Failure! Please try
again." is displayed
very soon.
The prompt
message
"Calibration
Failure! Please try
again." is displayed
15 minutes after
calibration is
started.
[00 00 00 02] is
displayed.
Possible Cause
Recommended Action
The alarm "Drive Gas Pressure
Low" is generated. The pressure
indicated by the drive gas (O2)
pressure gauge is lower than 200
kPa.
Zero point error occurs in the
Paw sensor or PEEP branch
pressure sensor. Refer to“3.6.3
Check the Sensor Zero Point”.
The sampling line of at least one
of the Paw sensor or PEEP
branch pressure sensor is not
connected or connected
incorrectly. Refer to 5.4 Sensor
and Valve Related Failures.
The maximum pressure generated
by the PEEP valve is smaller than
95 cmH2O. Refer to 5.4 Sensor
and Valve Related Failures.
1. An error occurs in the
pneumatic circuit connection
between the anesthesia machine
calibration device and the VCM.
2. An error occurs in the
communication connection
between the anesthesia machine
calibration device and the
anesthesia machine.
3. The anesthesia machine
calibration device is set
incorrectly.
Change or connect the gas supply to
ensure sufficient drive gas pressure.
The calibration data is incorrect:
The measurement range of
sensors is abnormal; the
calibration data does not conform
to monotonicity; the sensor
resolution is incorrect. Refer to
3.6.5 Check the Accuracy of
Pressure Sensors.
The drive gas pressure is too low.
4-38
Replace the VCM.
Reconnect the sensor sampling line.
Replace the expiration valve assembly.
1. Check the pneumatic circuit
connection between the anesthesia
machine calibration device and the
VCM. Reconnect the pneumatic circuit
if necessary.
2. Check the communication
connection between the anesthesia
machine calibration device and the
anesthesia machine or reconnect them
to ensure normal communication.
Replace the communication cable if the
problem persists.
3. Check the settings of the anesthesia
machine calibration device. Set the
anesthesia machine again if necessary.
Replace the VCM.
1. Change or connect the gas supply to
ensure that the gas pressure ranges
from 350 kPa to 450 kPa.
2. If the gas supply is normal, check
the gas supply pressure switch.
Failure
Description
Possible Cause
Recommended Action
[00 00 00 04] is
displayed.
The Auto/Manual switch is set to
the Manual position.
[00 00 00 08] is
displayed.
Zero point error occurs in the
Paw sensor.
[00 00 00 10] is
displayed.
Zero point error occurs in the
PEEP pressure sensor.
[00 00 00 20] is
displayed.
The measurement range of the
Paw sensor is abnormal
[00 00 00 40] is
displayed.
The measurement range of the
PEEP pressure sensor is
abnormal.
[00 00 00 80] is
displayed.
The calibration data of the Paw
sensor does not conform to
monotonicity.
[00 00 01 00] is
displayed.
The calibration data of the PEEP
pressure sensor does not conform
to monotonicity.
[00 00 02 00] is
displayed.
The resolution of the Paw sensor
is incorrect. The difference
between the maximum and
minimum AD values is smaller
than or equal to 500AD. The
resolution is smaller than 1
cmH20 ~2AD when the
difference between two adjacent
pressures is larger than or equal
to 1 cmH2O.
1. Check whether the Auto/Manual
switch is set to the Auto position.
2. Check whether the Auto/Manual
switch can switch normally.
1. Check the zero point.
2. Replace the VCM.
1. Check the zero point.
2. Replace the VCM.
1. Check the pipeline connection and
gas tightness.
2. Check the gas supply pressure.
3. Check the settings of the calibration
device.
4. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
5. Replace the VCM.
1. Check the pipeline connection and
gas tightness.
2. Check the gas supply pressure.
3. Check the settings of the calibration
device.
4. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
5. Replace the VCM.
1. Check the pipeline connection and
gas tightness.
2. Check the gas supply pressure.
3. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
4. Replace the VCM.
1. Check the pipeline connection and
gas tightness.
2. Check the gas supply pressure.
3. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
4. Replace the VCM.
1. Check the pipeline connection and
gas tightness.
2. Check the gas supply pressure.
3. Check the settings of the calibration
device.
4. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
5. Replace the VCM.
4-39
Failure
Description
Possible Cause
Recommended Action
1. Check the pipeline connection and
gas tightness.
2. Check the gas supply pressure.
3. Check the settings of the calibration
device.
4. Refer to 5.4 to troubleshoot sensor
and valve failures by using valve
diagnostic tools.
5. Replace the VCM.
[00 00 08 00] is
displayed.
The resolution of the PEEP
pressure sensor is incorrect. The
difference between the maximum
and minimum AD values is
smaller than or equal to 500AD.
The resolution is smaller than 1
cmH20 ~2AD when the
difference between two adjacent
pressures is larger than or equal
to 1 cmH2O.
The output pressure of the valve
is low.
[00 00 10 00] is
displayed.
The pressure change is not
unidirectional.
[00 00 20 00] is
displayed.
The communication with the
calibration device is interrupted.
[00 00 40 00] is
displayed.
The system fails to write data into
EEPROM.
[00 00 80 00] is
displayed.
The ACGO switch is in the ON
position.
[00 01 00 00] is
displayed.
The valve resolution is low.
[00 00 04 00] is
displayed.
[00 02 00 00] is
displayed.
The maximum value is not found.
4-40
1. Check whether the gas supply is
sufficient for the whole calibration
process.
2. Use the valve diagnosis tool to
check whether the maximum output
pressure of the PEEP valve is larger
than 90 cmH20. If not, replace the
airway module.
1. Check if the sampling line is
correctly connected.
2. Replace the VCM.
1. Check the connection between the
calibration device and the
communication cable.
2. Replace the calibration device and
perform the calibration again.
1. Perform the calibration again.
2. Replace the VCM.
1. Check whether the ACGO switch is
set to OFF.
2. Check the monitoring status of the
ACGO switch on the screen of the
anesthesia machine.
1. Check whether the gas supply is
sufficient for the whole calibration
process.
2. Check whether the calibration
device works properly.
3. Replace the PEEP valve.
1. Use the valve diagnosis tool for
diagnosis. (1) Open the PEEP valve
based on 4000DA. The pressure
measured by VT is greater than or
equal to 90 cmH2O.
(2) Close the PEEP valve and increase
the opening of the PEEP valve based
on a certain DA value. The AD values
collected by the Paw sensor increase
gradually.
Recalibration is recommended if the
preceding conditions are met.
2. Replace the PEEP valve.
Failure
Description
[00 04 00 00] is
displayed.
[FF FF FF FF] is
displayed.
Possible Cause
Recommended Action
The minimum value is not found.
A communication error occurs.
1. Use the valve diagnosis tool for
diagnosis. Open the PEEP valve within
the 0-2000DA. If the AD values
collected by the inspiratory pressure
sensor increase gradually, recalibration
is recommended.
2. Replace the PEEP valve.
1. Restart the anesthesia machine
and/or calibration device.
2. Check the communication cable.
3. Check whether a communication
error alarm is generated.
4. Replace the VCM or calibration
device.
4.3.4 Pressure and Flow Zeroing (Factory)
The anesthesia machine automatically performs pressure and flow zeroing at regular intervals
during operation. You can also perform pressure and flow zeroing manually in the factory
maintenance menu. Manual zeroing can immediately eliminate measurement deviations
caused by zero offset of sensors. The anesthesia machine supports automatic and periodic
pressure and flow zeroing. The first four zeroing operations are done automatically 5, 15, 30,
and 60 minutes after ventilation starts. Then automatic zeroing takes place every 120 minutes.
The three-way valve is opened and closed for valve flushing during mechanical ventilation
and before automatic zeroing. A dent appears in the waveform during zeroing, or opening and
closing of the three-way valve.
4.3.4.1 Zeroing Procedures
Follow these steps to zero pressure and flow sensors.
1. Select [Main] > [Service] > [Calibration] > [Zero Sensors] to enter the screen shown
below.
4-41
2.
Select [Begin] to enter the screen shown below. During the zeroing, you can select
[Cancel] to abort.
3.
The screen shown below is displayed if the ongoing zeroing is aborted. Select [Try
Again] to do the zeroing again or select [Done] to exit the zeroing screen.
4.
The screen shown below is displayed if the zeroing fails. Select Try Again to do the
zeroing again or select Done to exit the zeroing screen.
4-42
5.
The screen shown below is displayed upon a successful zeroing. Select [Done] to exit
the zeroing screen.
NOTE: In case of zeroing failure, other faults may exist. You must isolate and eliminate the
problem.
4.3.4.2 Troubleshoot Pressure and Flow Zeroing Failures
If the zeroing fails, perform the following steps to locate and rectify the fault.
1. Set the anesthesia machine to manual or standby mode. Turn off the fresh gas. Remove
breathing tubes from the breathing system so that the inspiration and expiration
connectors are exposed in the air. Bleed the residual gas inside the bellows. Ensure that
no flow or pressure enters the flow or pressure sensor inside the machine.
2. Check whether the zero points of sensors are normal by referring to 3.6.3 Check the
Sensor Zero Point.
3. If a zero point error is detected, remove the sampling line from the sensor to eliminate
effects caused by the sampling line occlusion or three-way valve. If the zero point is still
incorrect, the VCM is faulty. Replace the VCM.
4. If the zero points of sensors are correct but zeroing still fails, the three-way valve
assembly is faulty. Replace the three-way valve assembly.
4-43
4.3.5 Electronic Flowmeter Zeroing (User)
After the gas supply is disconnected, zero offset may occur to the sensor of the electronic
flowmeter if the pointer of the pressure gauge returns to zero but the electronic flowmeter
still displays a non-zero flow value. You can zero the flowmeter manually to immediately
eliminate measurement deviations caused by zero offset.
4.3.5.1 Zeroing Procedures
Follow these steps to zero the electronic flowmeter.
1. Select [Main] > [General] > [Zero Flow Meters] to enter the screen shown below. Set
up the machine as per the instructions on the screen and select [Begin] to start zeroing.
2.
The zeroing screen shown below is displayed. During zeroing, you can select [Cancel]
to abort.
4-44
3.
The screen shown below is displayed if the ongoing zeroing is aborted. Select [Try
Again] to do the zeroing again or select [Done] to exit the zeroing screen.
4.
The screen shown below is displayed if the zeroing fails. Select [Try Again] to do the
zeroing again or select [Done] to exit the zeroing screen.
5.
The screen shown below is displayed upon a successful zeroing. Select [Done] to exit
the zeroing screen.
NOTE: In case of zeroing failure, the electronic flowmeter may have other faults. You must
isolate and eliminate the problem.
4-45
4.3.5.2 Troubleshoot Electronic Flowmeter Zeroing Failures
If the zeroing fails, perform the following steps to locate and rectify the fault.
1. Disconnect the gas supplies. Bleed the gas inside the machine (or adjust the flowmeter
for the pointer of the pressure gauge to return to zero) and then perform zeroing again.
2. If the zeroing is successful, it is concluded that the previous zeroing failure is caused by
the mechanical failure in the three-way valve. Replace the three-way valve assembly.
3. If zeroing is still failed, it is concluded that zeroing is caused by the three-way valve
hardware circuit fault or electronic flowmeter board fault. Replace the three-way valve
assembly or electronic flowmeter board.
4.3.6 O2 Sensor Calibration
NOTE: The O2 sensor needs to be calibrated when a great deviation occurs in the O2
monitored value or the O2 sensor or VCM is replaced. Calibrate the O2 sensor again
when a great deviation of O2 concentration monitored value occurs or when the O2
sensor or the VCM is replaced.
NOTE: Before calibration, observe if the O2 sensor displays numerics on the measure screen.
If not, confirm that the O2 measure switch is turned on, check the O2 sensor connection
line, or replace the O2 sensor until measure numerics are displayed.
4.3.6.1 21% O2 Calibration
Follow these steps to calibrate the O2 sensor at 21% O2.
1. Select [Main] > [General] > [Calibrate O2 Sensor], or select [Main] > [System] >
[Calibrate / Check Sensor], or select [Main] > [Service] > [Calibration] > [O2
Sensor] to enter the screen shown below. The [General] tab displays only the O2 sensor
calibration at 21% O2. The [System] and [Service] tabs display the O2 sensor
calibration at 21% O2 and 100% O2, and need passwords. Follow the instructions on the
screen to set the machine. Select [Begin] to start calibration
4-46
2.
The calibration screen shown below is displayed after [Begin] is selected. During the
calibration, you can select [Cancel] to abort.
3.
The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
4.
The screen shown below is displayed if the calibration fails. The red font indicates
failure code. Select [Try Again] to do the calibration again or select [Done] to exit the
calibration screen.
4-47
5.
The screen shown below is displayed upon a successful calibration (in standby mode).
Select [Done] to exit the calibration screen.
4.3.6.2 100% O2 Calibration
NOTE: 100% O2 calibration shall be performed in standby mode.
NOTE: 100% O2 calibration shall be performed after a successful 21% O2 calibration.
Follow these steps to calibrate the O2 sensor at 100% O2.
1. Enter the standby mode.
2. Select [Main] > [System] > [Calibrate / Check Sensor] or select [Main] > [Service] >
[Calibration] > [O2 Sensor]. The [System] and [Service] tabs display O2 sensor
calibration at 21% O2 and 100% O2 and need passwords. The calibration screen shown
below is displayed after [100%] is selected. Follow the instructions on the screen to set
the machine and select [Next]. Set the Auto/Manual switch to the Auto position.
4-48
3.
After Next is selected, the system turns off N2O and Air flows automatically, turns on
O2 flow which is greater than 8L/min automatically, and enters the calibration screen as
shown below. Follow the instructions on the screen to set the machine. Wait 2 minutes
and ensure that the O2 cell voltage has stabilized at the maximum value for at least 30s.
Select Begin.
4.
The calibration screen shown below is displayed after [Begin] is selected. During the
calibration, you can select [Cancel] to abort.
5.
The screen shown below is displayed if the ongoing calibration is aborted. Select [Try
Again] to do the calibration again or select [Done] to exit the calibration screen.
4-49
6.
The screen shown below is displayed if the calibration fails. The red font indicates
failure code. Select [Try Again] to do the calibration again or select [Done] to exit the
calibration screen.
7.
The screen shown below is displayed upon a successful calibration. Select [Done] to
exit the calibration screen.
4-50
4.3.6.3 Common Failures and Recommended Actions
Failure Description
Possible Cause
Recommended Action
After Begin is selected, a
calibration failure is
prompted.
If the alarm "O2 Sensor
Disconnected" is displayed, the O2
sensor is not connected.
The O2 supply pressure is
insufficient (less than 200 kPa).
Connect the O2 sensor.
A calibration failure is
prompted three minutes
after the calibration is
started.
21% O2 calibration is not
completed before 100% O2
calibration.
The O2% sampling value is not
within the normal range. That is,
The 21% O2 sampling value is out
of the range of 150 to 560 and the
100% O2 sampling value is out of
the range of 523 to 2123. Select
Main > Service > Data
Monitors > VCM to view the
O2% sampling value
Error Code
Description
00000002
The O2 supply pressure is low
during the calibration at 100%
O2.
00000004
The O2 sensor is not
connected and the collected
data is in the range of
(41960 to 63165) (AD
value).
00000008
The calibration value at 21%
O2 is out of the normal
range (3586 to 9140) (AD
value).
00000010
The calibration value at 100%
O2 is out of the normal range
(9602 to 35727) (AD value).
4-51
Change or connect the gas
supply to ensure sufficient O2
supply pressure.
Perform 21% O2 calibration
followed by 100% O2
calibration.
Replace the O2 sensor.
Recommended Action
1. Check whether cables of the O2 sensor
are connected correctly.
2. Check the O2 supply pressure.
3. Check whether the output voltage of the
O2 sensor is stable in the calibration
menu.
4. Replace the O2 sensor.
1. Check whether the alarm "O2 Sensor
Disconnected" is displayed. If yes, check
whether the cables of the O2 sensor are
connected correctly.
2. Check whether the output voltage of the
O2 sensor is sable in the calibration menu.
3. Replace the O2 sensor.
1. Check whether cables of the O2 sensor
are connected correctly.
2. Check whether the O2 sensor is in the
21% O2 environment.
3. Check whether the output voltage of the
O2 sensor is stable in the calibration
menu.
4. Replace the O2 sensor.
1. Check whether cables of the O2 sensor
are connected correctly.
2. Check whether the O2 sensor is in the
100% O2 environment.
3. Check whether the output voltage of the
O2 sensor is stable in the calibration
menu.
4. Replace the O2 sensor.
Error Code
Description
00000020
An error occurs when data is
written into EEPROM.
Recommended Action
1. Perform the calibration again.
2. Replace the O2 sensor.
3. Replace the CPU board.
4.3.7 External AG Calibration
Use the sampling pipe to connect the standard gas (its concentration: 5% CO2, 45% O2; 45%
N2O; 5% DES), cylinder, pressure reduce valve, water trap and anaesthesia machine.
Perform the following tests after the module is preheated: Open the cylinder valve and access
to the gas calibration-related screen of the integrated equipment (see the following details).
Observe and check if the concentration of CO2 falls within 5.0%±0.2% and O2 within 45%
±2%. Notice that the O2 concentration will not be displayed for the module without O2.
Notices:
a. The method of accessing to calibration screen: under the Standby mode, access to
Main→System→Input the password (789789)→Accept. Click Calibrate and choose
External AG and then enter into the gas calibration screen of the integrated equipment.
b. If the gas concentration displayed does not within the given range, set the object value of
the gas type corresponded to the standard gas to be the standard value, then click
Calibrate.
4.3.8 CO2 Module Calibration
Pressure
Relief
Valve
Three-way
connectors
Cylinder
4-52
CO2 module
Make sure the module has been running for over 15 minutes under the test status when start
to calibrate. First, click Zero Calibration and then choose Continue. Set the “concentration
option” to be 5% in the CO2 module calibration screen. Then, Input the standard CO2 at a
concentration of 5%. After the value staying unchanged for 20 seconds, click Calibration
Confirmation button.
4.3.9 ORC Calibration
NOTE: Adjust N2O and Air resistance of resistance block assembly to the minimum
before adjusting the initial volume to ensure that the maximum flow can be satisfied when
adjusting the O2 and N2O ratio.
NOTE: Perform this calibration if the ORC is replaced.
Follow these steps to perform ORC calibration.
1. Connect the anesthesia machine to the O2, AIR and N2O supplies. Close the O2, AIR
and N2O needle valves. Switch the screen to standby mode.
2.
Turn the N2O needle valve to the maximum position. Slowly turn the O2 needle valve
to produce O2 flow of 0.25 L/min. If there is N2O flow displayed, turn the O2 resistor
on the ORC anti-clockwise with the flathead screwdriver until there is no N2O flow. If
there is no NO2 flow displayed, turn the O2 resistor on the ORC clockwise with the
flathead screwdriver until the N2O flow marginal value appears, which is not “0”.
4-53
4-54
O2 resistor
3.
4.
Keep the N2O needle valve at the maximum position. Close the O2 needle valve knob
and then slowly open the O2 needle valve. Observe if the O2 flow falls within 0.20 to
0.25 L/min when the N2O flow begins. If not, repeat step 2 until the requirement is
satisfied.
Keep the N2O needle valve at the maximum position. Turn O2 flow to 3 L/min and
observe N2O flow. If the N2O flow is less than 8.1±0.4 L/min, turn the N2O resistor on
the ORC anti-clockwise with the flathead screwdriver until the N2O flow reaches 9
L/min. If the N2O flow is greater than 8.1±0.4 L/min, turn the N2O resistor on the ORC
clockwise with the flathead screwdriver until the N2O flow reaches 8.1±0.4 L/min.
4-55
N2O resistor
4-56
5.
Turn the O2, AIR and N2O needle valves to the maximum positions. Turn the AIR
resistor on the pneumatic resistor block assembly to cause the AIR flow to fall within 15
to 15.5 L/min.
AIR resistor
4-57
4.3.10 High-Pressure Gas Cylinder Regulator Calibration
Perform the following steps to calibrate the high-pressure gas cylinder regulator. The
following uses the N2O high-pressure gas cylinder regulator as an example. The calibration
procedure of O2 and Air high-pressure gas cylinder regulators is the same as that of the N2O
high-pressure gas cylinder regulator.
The pressure in the cylinder must be 1000 psi at least for O2 and atmospheric air and 500 psi
at least for N2O.
For O2 and air, set the output pressure as per the following table. For N2O, set the output
pressure to 58 psi.
Cylinder Input Pressure
(psi)
1000
1150
1400
1650
1900
2150
2400
2650
2900
1.
Regulator Output Pressure
(psi)
59.2
58.5
57.2
56.0
55.1
54.3
52.9
51.8
50.7
Turn off the power supply and all gas supplies. Open the service door.
4-58
2.
Remove the rear cover plate.
3.
Open the rear cover plate of the integrated equipment and take off the rear panel of the
cart.
After extracting the pipe connected with check valve of cylinder assembly from one port
of the check valve, connect it to the Φ8 three-way valve. And then connect another two
ports of the three-way valve to the check valve and the pressure monitoring device
separately.
4.
Initiate the integrated equipment and turn on the gas supply of the cylinder (The gas
supply of pipes should be off now). Adjust the fresh gas flow to 1 L/min.
Remove the cap type self-locking nut at the head of the press reducer.
5.
4-59
6.
Rotate the regulating screw at the head slowly with a 4mm hexagon head spanner to
adjust the output pressure range (rotate clockwise to increase the pressure and
counterclockwise to reduce the pressure) until the adjusted pressure is within the range
listed in the preceding table (±5%). After adjusting the pressure, reinstall and tighten the
self-locking acorn nut.
7.
Turn off the gas supply and restore the machine tube connections.
4-60
5 Repair and Troubleshooting
5.1 Troubleshooting Guidelines
5.1.1 Identify Problems
Due to the wide variety of potential symptoms, certain problems may be more subtle than
others. Following the guidelines of the tests will help determine the problem, if one exists.
5.1.2 Avoid Shorting Component Leads
During repair procedures, it can be tempting to make a quick series of measurements. Always
turn the power off before connecting and disconnecting the test leads and probes. The
accidental shorting of leads can easily damage the components and cause a second failure
(aside from the safety risk).
5.1.3 Use Proper Tools
During repair procedures, the following tools may be required:
 Metric Allen wrench es(2.5, 3, 4, 5, 8mm)
 Phillips screwdriver(#1 and #2)
 Diagonal pliers
 Flathead screwdriver
 Metric M3 and M4 socket screwdriver
 Adjustable wrench
 Tweezers
 Krytox Lubricant (P/N:0510-00-0020)
It is imperative to use the designated equipment in order to ensure proper results of any and
all test procedures.
5.1.4 Clean up the Repair Area
Clean up the repair area after any repair.
5.2 Technical Alarms
A technical alarm, as apposed to a parameter alarm, is an alarm condition that exists no
matter whether a patient is connected to the machine. Technical alarms include:
 Startup alarm messages
 CPU board runtime alarms
 Power board runtime alarms
 Electronic flowmeter board runtime alarms
 VCM runtime alarms
 AG module runtime alarms
A technical alarm, as apposed to a parameter alarm, is an alarm condition that exists no
matter whether a patient is connected to the machine. Technical alarms include:
 Startup alarm messages
 CPU board runtime alarms
 Power board runtime alarms
 Runtime alarms of the flow sensor board
 VCM runtime alarms
 AG module runtime alarms
5-1
5.2.1 Startup Alarm Messages
Message
Priority
Cause
Solution
Bundle
Version Error
Bundle
Version: Time
out
High
Software versions are
incompatible.
1. Upgrade the software to a
compatible version.
Flowmeter
Voltage Error
High
DVCC, AVDD or VC voltage error
High
1. CPU, Flash, or WTD error.
2. After restart, the CPU board
cannot communicate with the
electronic flowmeter board.
High
1. CPU, Flash, WTD error.
2. After restart, the CPU board
cannot communicate with the
auxiliary VCM.
Ventilator
Selftest Error
Ventilator
Self Test:
Time out
High
1. CPU, timer, RAM, WTD,
EEPROM, or AD error.
2. After restart, the CPU board
cannot communicate with the
VCM.
Ventilator
Voltage Error
High
5 V or 12 V voltage error
Flowmeter
Selftest Error
Flowmeter
Self Test:
Time out
Aux Control
Module
Selftest Error
Aux Control
Module Self
Test: Time
out
5-2
1. Restart the machine.
2. Measure the 12V input
voltage (voltage on the power
cable) of the electronic
flowmeter to see if it is within
specifications. Check if the
cable is defective. If the input
voltage is out of specification,
replace the power board or
cable.
3. If the problem persists,
replace the electronic
flowmeter board.
1. Restart the machine.
2. Re-plug or replace the
communication cable between
the CPU board and the
electronic flowmeter board.
3. If the problem persists,
replace the electronic
flowmeter board.
4. If the problem persists,
replace the CPU board.
1. Restart the machine.
2. Re-plug or replace the
communication cable between
the CPU board and the
auxiliary VCM.
3. If the problem persists,
replace the auxiliary VCM.
4. If the problem persists,
replace the CPU board.
1. Restart the machine.
2. Re-plug or replace the
communication cable between
the CPU board and the VCM.
3. If the problem persists,
replace the VCM.
4. If the problem persists,
replace the CPU board.
1. Restart the machine.
2. Measure the input voltage of
the VCM to check whether it is
within the normal range.
3. If the input voltage is out of
Message
Priority
Cause
PEEP Valve
Failure
Med
1. PEEP valve voltage error.
2. PEEP valve pressure error.
Insp Valve
Failure
Med
1. Inspiratory valve voltage error.
2. Inspiratory valve flow error.
PEEP Safety
Valve Failure
Med
PEEP safety valve fault.
5-3
Solution
range, replace the power board
or cable.
4. If the problem persists,
replace the VCM.
1. Check whether the pressure
sensor on the PEEP circuit
complies with the
specifications. Calibrate the
pressure sensor in the service
menu or replace the sensor on
the PEEP circuit when a
pressure error occurs.
2. Measure the voltage at the
corresponding test point.
3. Check the connection
between the power supply and
the expiratory valve assembly.
4. Replace the VCM when
necessary.
5. Replace the expiratory valve
assembly when necessary.
6. Replace the power board
when necessary.
1. Check whether the
inspiratory flow sensor
complies with the
specifications. Calibrate the
flow sensor in the service
menu or replace the flow
sensor when a flow error
occurs.
2. Measure the voltage at the
corresponding test point.
3. Check the connection
between the power supply and
the expiratory valve assembly.
4. Replace the VCM when
necessary.
5. Replace the expiratory valve
assembly when necessary.
6. Replace the power board
when necessary.
1. Measure the voltage at the
corresponding test point.
2. Check the connection
between the power supply and
the expiratory valve assembly.
3. Replace the VCM when
necessary.
4. Replace the expiratory valve
assembly when necessary.
5. Replace the power board
when necessary.
Message
Flow Sensor
Failure
Calibrate
Flow Sensor
and Insp
Valve
Calibrate
Pressure
Sensor and
PEEp Valve
Calibrate O2
Sensor
Priority
Cause
Solution
Low
The measurement of the flow
sensor is out of normal range.
Low
1. No calibration table is found in
the EEPROM.
2. The checksum in the calibration
table is incorrect.
1. Check whether the zero
point of the flow sensor
complies with the
specifications.
2. Check whether the values
measured by the flow sensor
are within the normal range.
3. Replace the flow sensor and
calibrate it.
4. Replace the VCM and
calibrate it.
Perform service calibration.
For details about how to
calibrate the flow sensor, see
related section.
Low
1. No calibration table is found in
the EEPROM.
2. The checksum in the calibration
table is incorrect.
Perform service calibration.
For details about how to
calibrate the pressure sensor,
see related section.
Low
1. No calibration table is found in
the EEPROM.
2. The checksum in the calibration
table is incorrect.
1. Calibrate the O2 sensor
again.
2. If the problem persists,
replace the O2 sensor.
Ventilator
Initialization
Error
Ventilator
Initialization:
Time out
High
After power-on, the CPU board
cannot send the parameter settings
to the VCM.
Drive Gas
Pressure Low
High
The drive gas pressure is low.
O2 Supply
Failure
High
O2 supply failure.
Power Supply
High
3.3 V, 5 V, 12 V voltage errors.
5-4
1. Restart the machine.
2. Re-plug or replace the
communication cable between
the CPU board and the VCM.
3. If the problem persists,
replace the VCM.
4. If the problem persists,
replace the CPU board.
1. Check whether gas is
supplied normally.
2. Short-circuit the pressure
switch and the alarm should
disappear. Otherwise, it
indicates that the pressure
switch is defective. Replace
the pressure switch. If the
pressure switch is not
defective, check the
connection between the
pressure switch and the VCM.
3. If the problem persists,
replace the VCM.
Use the same method as that of
Drive Gas Pressure Low to
check the O2 pressure switch.
1. Measure the voltage at the
Message
Voltage Error
Priority
Cause
AC power
failure
Low
AC power failure
RT Clock
Failure
High
The clock chip malfunctions.
Keyboard
Selftest Error
Keyboard
Selftest:
Timeout
High
The keyboard malfunctions.
External AG
Selftest Error
External AG:
Time out
Low
The external AG module
malfunctions.
BIS Selftest
Error
BIS Selftest
Error: Time
out
Low
The BIS module malfunctions.
CO2 Selftest
Error
CO2 Selftest
Error: Time
out
Low
The CO2 module malfunctions.
NMT Selftest
Error
NMT Selftest
Error: Time
out
Low
The NMT module malfunctions.
5-5
Solution
corresponding test point.
2. If the problem persists,
replace the power board.
1. Check AC power supply
2.Check power connection
1. Restart the machine.
2. If the problem persists,
replace the VCM.
1. Check the cable connection
between the keyboard and the
CPU board.
2. Restart the machine.
3. If the problem persists,
replace the keyboard.
1. Re-plug the external AG
module, and then start it.
2. Check the cable connection
between the gas bench and the
CPU board.
3. Check whether the gas
bench works properly.
4. Replace the external AG
module.
1. Re-plug the BIS module,
and then start it.
2. Check the cable connection
between the gas bench and the
CPU board.
3. Check the main cables
connection.
4. Check whether the gas
bench works properly.
5. Replace the BIS module.
1. Re-plug the CO2 module,
and restart the machine for
selftest.
2. Check the cable connection
between the gas bench and the
CPU board.
3. Check whether the gas
bench works properly.
4. Replace the CO2 module.
1. Re-plug the NMT module,
and restart the machine for
selftest.
2. Check the cable connection
between the gas bench and the
CPU board.
3. Check whether the gas
bench works properly.
4. Replace the NMT module.
5.2.2 CPU Board Runtime Alarms
Message
IP Address
Conflict
Fan Failure
Fan Failure 02
Priority
Cause
Solution
Med
The IP address is
the same as that
of another
machine on the
local network.
1. Set the IP address again.
2. If the problem persists, upgrade the system
software or replace the CPU board.
Med
The fan speed is
20% less than
the rated value.
Med
The fan speed of
the gas bench is
lower than 3640
rounds/min.
1. Check whether the fan stops or runs slowly
(about 4000 rounds/min normally).
2. Re-plug the fan cable.
3. If the problem persists, check whether the 12
V power supply for fans is within the normal
range. If not, check the power board.
4. If the problem persists, replace the fan.
5. If the problem persists, replace the CPU
board.
1. Check whether the fan stops or runs slowly
(about 4000 rounds/min normally).
2. Re-plug the fan cable.
3. If the problem persists, check whether the 12
V power supply for fans is within the normal
range. If not, check the power board.
4. If the problem persists, replace the fan.
5. If the problem persists, replace the CPU
board.
5.2.3 Power Board Runtime Alarms
Message
Priority
Cause
Power System
Comm Stop
High
The CPU board
fails to
communicate
with the power
board for 10
seconds.
Power Supply
Voltage Error
High
3.3V, 5V, 12V
voltage errors
Solution
1. Restart the machine.
2. Re-plug the communication cable.
3. Remove the internal battery. Power on the
power board again 5 minutes after it is powered
off.
4. Replace the communication cable.
5. Check whether the power board software is
correct. Upgrade the software when necessary.
6. If the problem persists, replace the power
board.
7. If the problem persists, replace the CPU board.
1. Measure the voltage at the corresponding test
point.
2. Remove the internal battery. Power on the
power board again 5 minutes after it is powered
off. Repeat step 1.
3. If the problem persists, replace the power
board.
4. If the problem persists, contact the technical
support personnel.
5-6
Message
Priority
Cause
Low Battery
Voltage!
High
The battery
voltage is less
than 10.6 V for
a consecutive of
5 seconds.
System going
DOWN,
battery
depleted!
High
The battery
voltage is less
than 10.2 V.
Battery
Undetected
Med
No battery is
detected.
Battery in Use
Low
AC power
failure.
High
The power
board
temperature
exceeds 95ºC.
Low
1. Both
resistance
temperatures
exceed 106ºC
for 20 seconds.
2. Either
resistance
temperature
exceeds 110ºC
for 15 seconds.
1. Restart the machine.
2. If the problem persists, check whether the
heating temperature and voltage are within the
normal ranges. If not, replace the power board.
3. If the problem persists, replace the CPU board
and upgrade the system software.
High
No breathing
circuit is
mounted.
1. Check that the circuit is installed correctly.
2. Test the connection between the connection
line and the connector.
3. Replace the power board.
Power Board
High Temp
Heating
Module
Failure
Breathing
Circuit Not
Mounted
Solution
1. Check the connection to the AC mains. Reconnect the AC mains immediately.
2. Check whether the battery voltage is within
the normal range.
3. Check whether the charging circuit works
properly. If not, replace the power board.
1. Restart the machine.
2. If the problem persists, check the battery
voltage in the service menu. If the battery
voltage is less than 10.2 V, replace the battery.
3. If the problem persists, connect to the normal
mains supply. Make sure that the AC indicator is
on and charge the battery for 20 minutes.
4. If the problem persists, replace the battery.
5. If the problem persists, replace the power
board.
1. Check whether the battery voltage is within
the normal range.
2. Check whether the cable is connected
correctly.
3. Replace the battery.
4. If the problem persists, replace the power
board.
1. Check the connection to the AC mains.
2. If the AC mains is connected correctly and the
voltage is within the normal range, check the
connection between the AC mains and the power
board.
3. If the problem persists, replace the power
board.
1. Check whether the fan on the power module
operates properly.
2. Stop using the machine for a period of time. If
the problem persists after the machine is
restarted, replace the power board.
5.2.4 Electronic Flowmeter Board Runtime Alarms
5-7
Message
Flowmeter
Voltage Error
N2O Flow
Too High
Priority
High
DVCC, AVDD
or VC voltage
error
Low
N2O flow is
greater than
15L/min for 1
second.
O2 Flow Too
High
Low
Air Flow Too
High
Low
O2-N2O
Ratio Error
Flowmeter
Comm Stop
No Fresh Gas
Internal N2O
Flow Failure
Cause
O2 flow is
greater than
25L/min for 1
second.
Air flow is
greater than
20L/min for 1
second.
Solution
1. Restart the machine.
2. Measure the 12V input voltage (voltage on the
power cable) of the electronic flowmeter to see if
it is within specifications. Check if the cable is
defective. If the input voltage is out of
specification, replace the power board or cable.
3. If the problem persists, replace the electronic
flowmeter board.
1. Turn off other gas flow. Compare the
concerned gas flow with the measurement result
displayed on the total flowmeter.
2. Use test tools. Turn Auto/Manual to Bag, Set
APL valve at Max value. Measure fresh gas flow
at the inspiration connector. Check the
measurement error of electronic flowmeter.
3. If the problem persists, replace the flowmeter
relative subassembly.
Use the same method with “N2O Flow Too High”
to “O2 Flow Too High” to check the O2
flowmeter.
Use the same method with “N2O Flow Too High”
to “Air Flow Too High” to check the Air
flowmeter.
High
N2O flow is
greater than 0.5
L/min and
greater than 4
times O2 flow,
this condition
last for 1.6
seconds.
1. Restart the machine.
2. Check the measurement correctness of O2 and
N2O flow sensors. If measurement error occurs,
replace the flow sensor.
3. Check the ORC for leakage. Connect the tubes
again. If an error occurs, replace the ORC.
4. If the problem persists, replace the electronic
flowmeter board.
High
The electronic
flowmeter board
cannot establish
normal
communication
with the CPU
board for 10
seconds.
1. Restart the machine.
2. Re-plug or replace the communication cable
between the CPU board and the electronic
flowmeter board.
3. If the problem persists, replace the electronic
flowmeter board.
4. If the problem persists, replace the CPU board.
Med
Gas flow of Air,
O2, or N2O is all
less than
50mL/min.
Low
The
communication
between the
electronic
1. Check if the fresh gas knob is turned on.
2. Check the measurement correctness of flow
sensors. If measurement error occurs, replace the
flow sensor.
3. Check the ORC for leakage. Connect the tubes
again. If an error occurs, replace the ORC.
4. If the problem persists, replace the electronic
flowmeter board.
1. Restart the machine.
2. Check the measurement correctness of flow
sensors. If measurement error occurs, replace the
flow sensor.
5-8
Message
Priority
Internal O2
Flow Failure
Low
Internal Air
Flow Failure
Low
Cause
flowmeter CPU
and the N2O
flow sensor is
not successful
for continuous
3s.
The
communication
between the
electronic
flowmeter CPU
and the O2 flow
sensor is not
successful for
continuous 3s.
The
communication
between the
electronic
flowmeter CPU
and the N2O
flow sensor is
not successful
for continuous
3s.
Solution
3. If the problem persists, replace the electronic
flowmeter board.
Handle in the similar way to handling “Internal
N2O Flow Failure”.
Handle in the similar way to handling “Internal
N2O Flow Failure”.
5-9
5.2.5 VCM Runtime Alarms
Message
Priority
Cause
Aux Control
Module
Comm Stop
High
The CPU board fails
to communicate with
the auxiliary VCM for
10 seconds.
Ventilator
Voltage Error
High
5V or 12V voltage
error.
Med
1. PEEP valve voltage
error.
2. PEEP valve
pressure error.
Insp Valve
Failure
Med
1. Inspiratory valve
voltage error.
2. Inspiratory valve
flow error.
PEEP Safety
Valve Failure
Med
PEEP safety valve
voltage error.
PEEP Valve
Failure
Solution
5-10
1. Restart the machine.
2. Re-plug the communication cable.
3. If the problem persists, replace the
auxiliary VCM.
4. If the problem persists, replace the CPU
board.
1. Restart the machine.
2. Measure the input voltage of the VCM to
check whether the voltage is within the
normal range. Check whether the cable is
defective.
3. If the input voltage is out of range,
replace the power board or cable.
4. If the problem persists, replace the VCM.
1. Check whether the pressure sensor on the
PEEP circuit complies with the
specifications. Calibrate the pressure sensor
in the service menu or replace the sensor on
the PEEP circuit when a pressure error
occurs.
2. Measure the voltage at the corresponding
test point.
3. Check the connection between the power
supply and the expiratory valve assembly.
4. Replace the VCM when necessary.
5. Replace the expiratory valve assembly
when necessary.
6. Replace the power board when necessary.
1. Check whether the inspiratory flow
sensor complies with the specifications.
Calibrate the flow sensor in the service
menu or replace the flow sensor when a
flow error occurs.
2. Measure the voltage at the corresponding
test point.
3. Check the connection between the power
supply and the expiratory valve assembly.
4. Replace the VCM when necessary.
5. Replace the expiratory valve assembly
when necessary.
6. Replace the power board when necessary.
1. Measure the voltage at the corresponding
test point.
2. Check the connection between the power
supply and the expiratory valve assembly.
3. Replace the VCM when necessary.
4. Replace the expiratory valve assembly
when necessary.
5. Replace the power board when necessary.
Message
Flow Sensor
Failure
Check Flow
Sensors
Pinsp Not
Achieved
Vt Not
Achieved
Patient
Circuit Leak
Priority
Cause
Solution
1. Check whether the zero point of the flow
sensor is within the normal range.
2. Check whether the values measurement
by the flow sensor is within the normal
range.
3. Replace the flow sensor and calibrate it.
4. Check the cable connection for the
internal flow sensor. Re-plug the cables.
Replace the sensor when necessary.
5. Replace the VCM and calibrate it.
1. Check the one-way valve.
2. Check whether the sampling lines of the
sensor are connected in correct order.
3. Test the measurement status of the sensor
in the diagnostic test tool.
1. Check for breathing circuit leakage.
2. Check the measurement accuracy of the
pressure sensor.
3. Calibrate the pressure sensor in case of
measurement failure.
4. Replace the VCM and calibrate it.
Low
1. The inspiratory
flow is out of range.
2. The expiratory flow
is out of range.
3. The internal flow
sensor is
disconnected.
High
1. Inspiratory reverse
flow.
2. Expiratory reverse
flow.
Low
In pressure mode,
Pinsp is less than 2/3
of its setting value
(setting value is
greater than 9cmH2O)
or less than setting
value-3cmH2O(setting
value is less than
9cmH2O) for
continuous 6 breath
cycles.
Low
TVi is less than 20%
of the setting TV or
50ml for continuous 6
cycles, whichever is
greater.
1. Check for breathing circuit leakage.
2. Check the measurement accuracy of the
flow sensor.
3. Calibrate the flow sensor in case of
measurement failure.
Med
1. During mechanical
ventilation, the
pressure is less than
2cmH2O for
continuous 30s.
2. The patient is not
connected.
1. Check whether the circuit and flow
sensor are correctly connected.
2. Check whether the tidal volume
measured by the flow sensor meets the
accuracy requirements.
3. Check for breathing circuit leakage.
CO2
Absorber
Canister Not
Locked
High
The CO2 absorber
canister is not
mounted.
O2 Sensor
Disconnected
Low
The O2 sensor is
disconnected.
Replace O2
Sensor
Med
The O2 concentration
value sampling AD is
less than 173 AD.
5-11
1. Re-mount the Co2 absorber canister.
2. Check the cable connected between the
CO2 absorber canister and the VCM.
Replace the cable when necessary.
3. If the problem persists, replace the switch
on the CO2 absorber canister.
4. If the problem persists, replace the VCM.
1. Make sure that the cable is correctly
connected for the O2 sensor.
2. Check the voltage O2 sensor output in the
calibration menu.
3. Replace the O2 sensor.
1. Check the output voltage of the O2
sensor in the calibration menu.
Message
Priority
Cause
Low
The O2 concentration
value exceeds 110%
or ranges from 5% to
15% for 3 seconds.
Ventilator
Comm Stop
High
The CPU board fails
to communicate with
the VCM for 10
seconds.
Drive Gas
Pressure Low
High
The drive gas pressure
is low.
O2 Supply
Failure
High
The O2 supply
pressure is low.
Calibrate O2
Sensor
3-way Valve
Failure
Low
The status of the 3way valve is incorrect.
ACGO 3-way
Valve Failure
Med
The status of the 3way valve is incorrect.
Auto
Ventilation
Disabled
Low
The machine fails the
startup self-test and
only manual
ventilation is
applicable.
Auto
Ventilation
Disabled Leak Test
Failed
Low
The automatic circuit
leak test fails.
Auto
Ventilation
Disabled
High
The machine can
apply only manual
ventilation, but the
manual ventilation
switch is turned to the
auto position.
ACGO
Failure
Med
The status of the
ACGO switch is
Solution
2. Calibrate the O2 sensor again.
3. Replace the O2 sensor.
1. Calibrate the O2 sensor again.
2. Replace the O2 sensor.
1. Restart the machine.
2. Re-plug the communication cable.
3. If the problem persists, replace the VCM.
4. If the problem persists, replace the CPU
board.
1. Check whether gas is supplied normally.
2. Short-circuit the pressure switch and the
alarm should disappear. Otherwise, it
indicates that the pressure switch is
defective. Replace the pressure switch. If
the pressure switch is not defective, check
the connection between the pressure switch
and the VCM.
3. If the problem persists, replace the VCM.
Use the same method as that of Drive Gas
Pressure Low to check the O2 pressure
switch.
1. Test the connection of the 3-way valve.
2. Replace 3-way valve.
3. Replace the VCM.
Note: this alarm can only be viewed in
alarm log and is not displayed on the screen.
1. Test the connection of the 3-way valve.
2. Replace 3-way valve.
3. Replace the VCM.
1. Restart the machine.
2. If the problem persists, check related
modules based on the startup self-test
results.
3. If the problem persists, replace related
modules based on the startup self-test
results.
1. Check that the circuit and pipeline are
installed correctly. Check whether the
sampling port is occluded and whether
condensate drain is closed.
2. Perform the leak test again.
1. Set the manual ventilation switch to the
manual position.
1. Check whether the drive gas pressure is
within the normal range. If not, ensure that
5-12
Message
Priority
Cause
incorrect.
Electronic
ACGO
Undetected
Low
No electronic ACGO
is detected.
Aux Control
Board
Voltage
failure
Low
Protective module
1.3V power supply
Pressure
monitoring
channel
failure
Med
1.PEEP pressure
sensor contraconnection.
2.The measured value
of airway pressure
sensor or PEEP
pressure sensor is
beyond the range.
3.Airway pressure
sensor or PEEP
pressure sensor zero
point abnormality.
5-13
Solution
the drive gas pressure is within the normal
range. Then turn on or off the ACGO
switch.
2. If the problem persists, replace the
ACGO switch.
3. If the problem persists, replace the CPU
board.
4. If the problem persists, replace the
VCM.
1. Check whether an electronic ACGO
module is configured for the machine. If
not, enter password 558188 to access the
special service menu, and configure a
correct ACGO type based on actual
conditions of the machine.
2. If so, check the connections between the
ACGO module and the CPU board, and
between the ACGO module and the VCM.
3. Replace the electronic ACGO module
when necessary.
4. Replace the CPU board or VCM when
necessary.
1.Restart the anaesthesia machine.
2.Measure the supply voltage of the aux
control board to make sure the supply
voltage is within the specific given range.
3.Check if the cables are invalid. If the
supply voltage is out of the specific voltage,
replace the power supply board or cables.
4.If the problem persists, replace the VCM.
1.Cut off the gas supply and disconnect the
gas connection with patients. Observe the
sampling value of the pressure sensor.
2.If the zero deviation is large, check if the
pressure sampling pipes were contraconnected, blocked or oppressed.
3.Zero calibrating manually.
4.Restart the machine.
5. If the problem persists, replace the VCM.
5.2.6 External AG Module Runtime Alarms
Message
Priority
AG Hardware
Error
Med
O2 Sensor Error
Med
External AG
Selftest Error
AG Hardware
Malfunction
AG Init Error
Cause
Solution
The AG hardware
malfunctions.
The O2 sensor
malfunctions.
Replace the AG module.
Replace the AG module.
Low
An error occurs
during AG module
self-test.
1. Re-plug the AG module.
2. If the problem persists or the alarm
occurs repeatedly, replace the AG
module.
High
The AG module is
not properly installed
or malfunctions.
Replace the AG module.
High
An error occurs
during AG
initialization.
1. Re-plug the AG module.
2. If the problem persists or the alarm
occurs repeatedly, replace the AG
module.
AG No Watertrap
Low
AG Watertrap Type
Wrong
Low
The AG watertrap is
disconnected from
the anesthesia
machine.
The patient type is
infant/neonate, and
watertrap type is
adult.
AG Change
Watertrap
Med
The watertrap needs
to be replaced.
AG Comm Stop
High
The AG module
malfunctions or the
communication fails.
AG Airway
Occluded
High
The pump rate of the
AG module is below
20 ml/min for more
than 1 second.
AG Data Limit
Error
Med
AG Zero Failed
Low
AG Cal. Failed
High
O2 Accuracy
Unspecified
Low
N2O Accuracy
Unspecified
Low
CO2 Accuracy
Unspecified
Low
The AG module
malfunctions.
Zeroing for the AG
module fails.
Calibration for the
AG module fails.
The measured values
exceed the normal
range.
The measured values
exceed the normal
range.
The measured values
exceed the normal
range.
5-14
1. Check the AG watertrap.
2. Replace the AG watertrap.
3. Replace the AG module.
Change the watertrap type.
1. Check the AG watertrap.
2. Replace the AG watertrap.
3. Replace the AG module.
1. Replace the communication cable
of the AG module.
2. Replace the AG module.
1. Check the sampling of the AG
module.
2. Replace the AG watertrap.
3. Replace the AG module.
Replace the AG module.
1. Zero the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
Message
Priority
Enf Accuracy
Unspecified
Low
Iso Accuracy
Unspecified
Low
Sev Accuracy
Unspecified
Low
Hal Accuracy
Unspecified
Low
Des Accuracy
Unspecified
Low
Mixed Agent
Low
Mixed Agent
Med
Mixed Agent and
MAC ≥ 3
Med
Cause
Solution
The measured values
exceed the normal
range.
The measured values
exceed the normal
range.
The measured values
exceed the normal
range.
The measured values
exceed the normal
range.
The measured values
exceed the normal
range.
The AG module
detected two and
more kinds of
halogenated agents.
The measured MAC
is less than 3.
The AG module
detected two and
more kinds of
halogenated agents. It
cannot detect the
specific MAC value
(invalid value).
The AG module
detected two and
more kinds of
halogenated agents.
The measured MAC
is greater than or
equal to 3.
iCO2 Overrange
Low
The monitored value
exceeds the
measurement range.
O2 Overrange
Low
The monitored value
exceeds the
measurement range.
N2O Overrange
Low
The monitored value
exceeds the
measurement range.
Hal Overrange
Low
The monitored value
exceeds the
measurement range.
5-15
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
1. Calibrate the AG module again.
2. Replace the AG module.
Use only one type of halogenated
agent.
Use only one type of halogenated
agent.
Use only one type of halogenated
agent.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
Message
Priority
Cause
Solution
Enf Overrange
Low
The monitored value
exceeds the
measurement range.
Iso Overrange
Low
The monitored value
exceeds the
measurement range.
Sev Overrange
Low
The monitored value
exceeds the
measurement range.
Des Overrange
Low
The monitored value
exceeds the
measurement range.
Rate Overrange
Low
The monitored value
exceeds the
measurement range.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the concentration of the
monitored gas to normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
1. Decrease the respiratory rate to
normal range.
2. Calibrate the AG module again.
3. Replace the AG module.
5.2.7 BIS Module Runtime Alarms
Message
BIS Init Error
BIS Comm Abnormal
Priority
High
High
BIS Over Range
BIS L Over Range
Low
BIS R Over Range
Cause
Solution
The system fails to
receive information
about BIS module
initialization.
Waveform data packet
is not received for
continuous 2s; or, data
packet of BIS
monitored parameters
is not received for
continuous 4s.
The monitored value
exceeds the
measurement range of
the module.
The sensor is not
properly adhered to
the patient skin. The
impedance is too high.
BIS High Imped.
Low
BIS Sensor Off
Low
The sensor falls off
from the patient.
BIS Electrode 1 High
Imped.
Low
The impedance of BIS
electrode 1 is too
high.
BIS Electrode 1 Lead
Off
Low
BIS electrode 1 falls
off from the patient.
5-16
1. Re-plug the BIS module.
2. Replace the BIS module.
1. Check the communication cable
between BIS module and main
system.
2. Replace the BIS module.
Replace the BIS module.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 1 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 1 and patient skin.
2. Replace with a new BIS sensor.
Message
Priority
Cause
Solution
BIS Electrode 2 High
Imped.
Low
The impedance of BIS
electrode 2 is too
high.
BIS Electrode 2 Lead
Off
Low
BIS electrode 2 falls
off from the patient.
BIS Electrode 3 High
Imped.
Low
The impedance of BIS
electrode 3 is too
high.。
BIS Electrode 3 Lead
Off
Low
BIS electrode 3 falls
off from the patient.
BIS Electrode 4 High
Imped.
Low
The impedance of BIS
electrode 4 is too
high.。
BIS Electrode 4 Lead
Off
Low
BIS electrode 41 falls
off from the patient.
BIS Electrode G High
Imped.
Low
The impedance of BIS
electrode G is too
high.
1. Check the contact between BIS
sensor electrode 2 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 2 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 3 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 3 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 4 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode 4 and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode G and patient skin.
2. Replace with a new BIS sensor.
BIS Electrode G Lead
Off
Low
BIS electrode G falls
off from the patient.
BIS Electrode C High
Imped.
Low
The impedance of BIS
electrode C is too
high.
BIS Electrode C Lead
Off
Low
BIS electrode C falls
off from the patient.
BIS Electrode LE
High Imped.
Low
The impedance of BIS
electrode LE is too
high.
BIS Electrode LE
Lead Off
Low
BIS electrode LE falls
off from the patient.
BIS Electrode LT
High Imped.
Low
The impedance of BIS
electrodeLT is too
high.
BIS Electrode LT
Lead Off
Low
BIS electrode LT falls
off from the patient.
BIS Electrode RE
High Imped.
Low
The impedance of BIS
electrode RE is too
high.
BIS Electrode RE
Lead Off
Low
BIS electrode RE falls
off from the patient.
5-17
1. Check the contact between BIS
sensor electrode G and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode C and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode C and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode LE and patient
skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode LE and patient
skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode LT and patient
skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode LT and patient
skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode RE and patient
skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode RE and patient
skin.
2. Replace with a new BIS sensor.
Message
Priority
Cause
Solution
BIS Electrode RT
High Imped.
Low
The impedance of BIS
electrode RT is too
high.
BIS Electrode RT
Lead Off
Low
BIS electrode RT falls
off from the patient.
BIS DSC Error
Low
BIS DSC Malf
Low
BIS No Cable
Low
BIS No Sensor
Low
BIS Sensor Too Many
Uses
Low
BIS sensor is overused
BIS SQI<50%
Low
SQI is low.
BIS DSC
communication error.
BIS DSC
malfunctions and
turns off
automatically.
BIS cable is not
connected.
BIS sensor is not
connected.
SQI is very low,
prompting the user
that BIS value is not
reliable.
SQI L is very low,
prompting the user
that BIS value is not
reliable.
1. Check the contact between BIS
sensor electrode RT and patient
skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor electrode RT and patient
skin.
2. Replace with a new BIS sensor.
Replace the BIS module.
Replace the BIS module.
1. Check the BIS cable.
2. Replace the BIS cable.
1. Check the BIS sensor.
2. Re-install the BIS sensor.
1. Check if the use times of BIS
sensor exceeds the restricted times
(100 times).
2. Replace the BIS sensor.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
BIS SQI<15%
Low
BIS SQI L<15%
Low
BIS SQI L<50%
Low
SQI L is lower.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
BIS SQI R<15%
Low
SQI R is very low,
prompting the user
that BIS value is not
reliable.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
BIS SQI R<50%
Low
SQI R is lower.
BIS Sensor Expired
Low
BIS sensor is expired.
BIS Electrode
Unconnected
Low
BISx Disconnected
Low
BIS Wrong Sensor
Type
Low
BIS sensor electrode
is not connected.
BIS cable is not
connected to the plugin module or
communication
malfunctions.
Mindray undeclared
BIS sensor is used.
5-18
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
1. Check the contact between BIS
sensor and patient skin.
2. Replace with a new BIS sensor.
1. Check the validity period of BIS
sensor.
2. Replace the BIS sensor.
1. Check the interface between BIS
cable and plug-in module.
2. Replace the BIS cable.
3. Replace the plug-in module of
BIS module.
1. Check the type of BIS sensor.
2. Replace the BIS sensor.
Message
Priority
BIS Sensor Failure
Low
Disconnect/Reconnect
BIS
Low
BIS Self Test Error
Low
Cause
Solution
Sensor overcurrent, or
positive electrode
error.
Overcurrent error
accumulates to three
times and positive
electrode error
accumulates to twice.
It is necessary to
power off and then
power on the BIS
module. The use shall
re-plug the BIS
module or BIS plug-in
box.
An error occurs to
BIS module selftest.
1. Check the BIS sensor.
2. Replace the BIS sensor.
Re-plug the BIS sensor.
1. Re-plug the BIS module.
2. If the problem persists, replace
the BIS module.
5.2.8 CO2 Module Runtime Alarms
Message
Priority
Cause
CO2 Comm Stop
High
CO2 module error or
Comm error.
CO2 Sensor High
Temp
Low
CO2 Sensor Low
Temp
Low
CO2 High Airway
Press.
CO2 Low Airway
Press.
CO2 High
Barometric
CO2 Low
Barometric
Solution
CO2 Sensor Temp too
high(greater than 63°
C).
CO2 Sensor Temp too
low(lower than 5 °C)
Low
Airway Press too
high(greater than
790mmHg)
Low
Airway Press too
low(lower than
428mmHg)
Low
Low
Barometric is greater
than 790mmHg
Barometric is lower
than 790mmHg
1.External AD 2.5V
Error
2.12V Voltage Error
3.Internal AD 2.5V
Error
4.Air pump Error
5.3-Way Valve Error
CO2 Hardware
Error
High
CO2 Sampleline
Occluded
Low
Sampleline Occluded
CO2 System Error
Low
multi-System error
5-19
1. Replace the communication cable
for CO2 module.
2. Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
1. Check the airway pressure.
2. Re-install the sampling line of
CO2 module.
3. Replace the CO2 module.
1. Check the airway pressure.
2. Re-install the sampling line of
CO2 module.
3. Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
1. Check the sampling line of CO2
module.
2. Replace the CO2 module.
Replace the CO2 module.
Message
Priority
CO2 No Watertrap
Low
EtCO2 Overrange
Low
FiCO2 Overrange
Low
CO2 Zero Failed
Low
CO2 Init Error
High
Incompatible CO2
Software Version
High
CO2 Sensor Error
Low
CO2 No Sensor
Low
CO2 Check Airway
Low
CO2 No Sample line
CO2 Main Board
Error
CO2 Check Sensor
or Main Board
CO2 Replace
Scrubber&Pump
Low
High
Low
Low
CO2 Replace Sensor
Low
CO2 15V Voltage
Over Range
High
CO2 Temp Over
range
Low
CO2 Check Cal.
Low
Cause
Solution
CO2 No Watertrap or
Watertrap
disconnected.
1. Check the CO2 watertrap.
2. Re-install the CO2 watertrap.
3. If the problem is not eliminated,
replace the CO2 watertrap.
4. If the problem persists, replace the
CO2 module.
The monitoring value
exceeds the
measurable range.
The monitoring value
exceeds the
measurable range.
Mindray CO2 module
Error
CO2 Init Error
The CO2 module
detected is not
compatible.
The mainstream CO2
module sensor Error
The mainstream CO2
module sensor
disconnection or
communication error
MiniMedi CO2 airway
abnormal or block
MiniMedi CO2
disconnected with
sampling pipes.
MiniMedi CO2
module Error
MiniMedi CO2
module Error
MiniMedi CO2
module Error
MiniMedi CO2
module Error
MiniMedi CO2
module Error
MiniMedi CO2
module working
temperature is over
than that in regular
working status.
MiniMedi CO2
module Error
5-20
1. Re-calibrate the CO2 module.
2. Replace the CO2 module.
1. Re-calibrate the CO2 module.
2. Replace the CO2 module.
1. Re-zero the CO2 module.
2. Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module(not
applicable to M02A module).
Replace the CO2 module.
1.Check the sensor of the
mainstream CO2 module
2. Replace the mainstream
CO2 module sensor
Replace the CO2 module.
1.Check CO2 module sampling
pipe
2.Replace CO2 module
sampling pipe
3.Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
Replace the CO2 module.
Recalibrate the CO2 module
5.2.9 NMT Module Runtime Alarm
Message
NMT No Main
Cables
NMT No Sensor
Priority
Low
NMT Stimulation
Electrode off
Low
NMT stimulating
electrode fell off.
NMT Sensor Comm.
Error
Low
NMT sensor comm.
error
NMT Stimulation
current over Limit
Low
NMT Comm.
Abnormal
High
Abnormal NMT
communication
NMT Comm. Stop
High
NMT communication
stops
NMT Init Error
High
NMT initializes
incorrectly.
NMT Self Test Error
Low
NMT Selftest Error
Low
Cause
NMT main cables
disconnected.
NMT sensor
disconnected
The stimulating
current value of NMT
module output
overanges the specific
value.
5-21
Solution
Please check the connection between
the main cables and NMT module.
1 Check the connection between the
sensor and NMT module to ensure
the normal connection.
2 If the alarm persists, please replace
the sensor.
1 Check the connection between the
stimulating cables and the main cable
to ensure the normal normal
connection.
2 If the alarm persists, please check
the connection between the patient
and the stimulating electro.
1 Check the connection between the
sensor and the main cable of NMT
module to ensure the normal
connection.
2 If the alarm persists, please replace
the sensor or NMT module
1 Check the connection between the
stimulating cable and the main cable
to make sure the normal connection
between the patient and the
stimulating eletro.
2 If the alarm persists, please replace
the NMT module or related
component.
1 Re-plug the NMT module, main
cable, sensor and the stimulating
electro, or plug the NMT to the other
machine. Eliminate the error
situations one by one.
2 If the alarm persists, please replace
the NMT module or related
component.
1 Re-plug the NMT module, main
cable, sensor and the stimulating
electro, or plug the NMT to the other
machine. Eliminate the error
situations one by one.
2 If the alarm persists, please replace
the NMT module or related
component.
1 Re-plug the NMT module or restart
the anaesthesia machine
2 If the alarm persists, please replace
the NMT module.
1 Re-plug the NMT module or restart
the anaesthesia machine
2 If the alarm persists, please replace
the NMT module.
NMT Power Error
High
NMT mainstream
disconnected or
abnormal
communication
ST-Ratio Over Range
Low
TOF-Ratio Over
Range
Low
DBS-Ratio Over
Range
Low
NMT power supply
error.
ST-Ratio
measurement
overrange.
TOF-Ratio
measurement
overrange
1 Please check the connection
between the main cable and NMT
module.
2 If the alarm persists, please replace
the NMT module.
Replace the NMT module.
1 Recalibrate the sensor.
2 Replace the sensor or NMT
module.
1 Recalibrate the sensor.
2 Replace the sensor or NMT
module.
5.3 Pneumatic System Problems
The pneumatic system is mainly composed of anesthetic gas delivery system, anesthetic
agent delivery device (vaporizer), anesthetic ventilator, breathing and anesthetic gas
scavenging system. This chapter details possible failures regarding the pneumatic system and
how to troubleshoot them.
5.3.1 Tools for on-site Maintenance
The tools required for troubleshooting are listed below. The materials listed in the form are
not sold separately. Please consult the engineer if any questions.
Name
Quantity
P/N
Negative pressure ball
Injector（100ml）
Circuit adapter test fixture
Flow sensor pressure sampling pipeline test fixture
Vaporizer manifold test fixture
1 MPa(10 bar) Test pressure gauge
T-shaped Allen wrench(4*100)
3106-04-06 adapter connector
3106-06-08 adapter connector
3106-10-00 adapter connector
3106-06-00 adapter connector
Breathing tube adapter connector
3126-04-00 tube plug
3126-06-00 tube plug
3126-08-00 tube plug
3126-10-00 tube plug
Y piece
Breathing tube Y piece
3140-08-00 Y piece
PU tube (4X200)
PU tube (6X100)
PU tube (6X200)
PU tube (6X300)
PU tube (8X200)
Breathing tube
5-22
1
1
1
1
1
1
1
1
1
2
1
1
2
3
4
3
2
1
1
1
1
1
1
2
4
040-000814-00*
040-000040-00*
115-002452-00*
115-002456-00*
115-002453-00*
0611-30-67602*
M90-100111---*
M6Q-030068---*
M6Q-030051---*
082-000021-00*
M6Q-030059---*
115-002454-00*
082-000023-00*
M6Q-120001---*
M6Q-120002---*
082-000022-00*
M90-100030---*
M6Q-030028---*
M6Q-030025---*
M6G-020046---*
M6G-020026---*
M6G-020014---*
M6G-020017---*
Name
Quantity
P/N
Φ6 silicone tube
A5 Service Manual
Adult test lung
Wrench
Y-Fitting 15 mm connection
Respiration Tube, 0.6 meter silicone, 15mm
Breathing Bag 2.3 L silicone
Regulator Calibration Hose
A5 troubleshooting kit
Vaporizer Instruction Manual
Safety Analyzer Dempsey 430 or equivalent
Digital Volt Meter 3 1/2 digit
Agent (and NO2) Analyzer ±0.3 V/V%+5% of reading
Digital Pressure Meter BC Biomedical DPM-2301751 NMC
Digital Pressure Meter or equivalent
Central supplied O2,NO2,AIR Minimum of 35 psi, DISS
connections.
Cylinder gases O2,NO2,AIR Full PISS yoke connections
Gas flow analyzer with accuracy of 2%
Communication box (this box is required if FlukeVT Plus gas
flow analyzer is used)
Lucer adapter connector
Ethernet Crossover Cable
USB flash drive
* = is part of the 115-009450-00 A5 troubleshooting kit.
3
/
/
/
/
2
/
/
/
/
/
/
/
/
A21-000007---*
046-001140-00
0138-00-0012
0367-00-0080
0103-00-0508
0004-00-0076
0992-00-0139
0453-00-1216
115-009450-00
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
0012-00-1392-06
0992-00-0297-01
The following pictures show the tools listed above.
(1)
(2) (3)
(4)
(5)
5-23
(6)
(7)
(8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19)
（1）PU tube (4X200)；（2）PU tube (6X100)；（3）PU tube (6X200)；（4）PU tube
(6X300)；（5）PU tube (8X200)；（6）Φ6 silicone tube；（7）Breathing tube；
（8）310604-06 adapter connector；（9）3106-06-00 adapter connector；（10）3106-06-08 adapter
connector；（11）3106-10-00 adapter connector；（12） Breathing tube adapter connector；
（13）3126-04-00 tube plug；（14）3126-06-00 tube plug；（15）3126-08-00 tube plug；
（16）3126-10-00 tube plug；（17）Y piece；（18）3140-08-00 Y piece；（19）Breathing
tube Y piece；
Negative pressure ball:
Circuit adapter test fixture:
5-24
Flow sensor pressure sampling pipeline test fixture:
Vaporizer manifold test fixture:
Anesthesia machine calibration device:
5-25
1 MPa (10bar) test pressure gauge:
5.3.1.1 Precautions for Use of Circuit Adapter Test Fixture
There are four connectors for pressure sampling lines and four 6 quick plug-in connectors
with number marked on the circuit adapter test fixture, as shown below.
Connector
for pressure
sampling
line
6 quick plug-in
connector
6 quick plug-in
connector
The connectors for pressure sampling lines can be connected with Φ6 silicone tubes and the
6 quick plug-in connectors with PU tube (6X100), PU tube (6X200) and PU tube (6X300),
as shown below.
The circuit adapter test fixture can be mounted either onto the circuit adapter of the
anesthesia machine main unit or onto the removed patient circuit. The following pictures
show the test fixture mounted in position.
5-26
If it is hard to install and remove the test fixture, apply a layer of lubricant (Krytox highperformance fluorine grease) to the seals (as shown below).
Seal (M6M-010058---)
Seal (082-000667-00)
Seal (082-000665-00)
5.3.1.2 Precautions for Use of Flow Sensor Pressure Sampling Pipeline
Test Fixture
There are two connectors for pressure sampling lines on the flow sensor pressure sampling
pipeline test fixture, as shown below.
Connector for
pressure
sampling line
5-27
The connector for pressure sampling line can be connected with Φ6 silicone tubes.
When using the flow sensor pressure sampling pipeline test fixture, remove the expiratory or
inspiratory flow sensor from the patient circuit first. Then mount the flow sensor pressure
sampling pipeline test fixture onto the position where the expiratory or inspiratory flow
sensor was originally mounted and tighten the Inspiration/Expiration Connector Coupling, as
shown below. Perform test after connecting the Φ6 silicone tube to the connector for
pressure sampling line.
5-28
5.3.1.3 Precautions for Use of Vaporizer Manifold Test Fixture
When using the vaporizer manifold test fixture, remove the o-ring seal on the vaporizer
manifold assembly. Then slide the test fixture onto the connector, as shown below.
After the test fixture is slid on
Before the test fixture is slid on
Turn the knob clockwise until the bottom surface of the pressure head is in contact with the
top surface of the connector, as shown below.
Contact here when mounted
5-29
5.3.1.4 Precautions for Use of Negative Pressure Ball
Besides one sealing cover, the negative pressure ball also has two one-way valves at its front
end, as shown below. The built-in one is connected with the gas inlet of the ball which
permits the gas come in only, and the exterior one only permits the gas come out. If the front
sealing cover is removed or loosened, the sealing performance of the negative pressure ball
will compromise. In this case, you need to tighten the sealing cover.
Sealing cover
Tighten the sealing cover
Gas inlet
External one-way valve (gas outlet)
When the negative pressure ball is connected with the tested component, the ball permits the
gas in only, but meanwhile it’s free to release air when it’s pressed.
Before using the negative pressure ball, make sure that it is not leaky. Check if the front
sealing cover is tightened. Then flatten the negative pressure ball to remove the gas inside.
Install the gas outlet plug properly. Block the front gas inlet with your finger then release the
ball. Ball should not visibly inflate for at least 30 seconds. If it does, replace the ball.
5-30
5.3.2 Gas Supplies and Drive Gas
The following table lists gas supplies and drive gas related failures.
Failure description Possible cause
Recommended action
Leak
The gas supply tube is
damaged or the seal at
the connection is
damaged.
The quick plug-in
connector leaks.
Replace the gas supply tube or the seal at the
connection.
The pipeline gas supply
inlet assembly leaks.
The drive gas pipeline
leaks.
Pipeline pressure
gauge shows
inaccurate readings
or no readings.
The readings on the
pipeline pressure
gauge fluctuate
greatly.
The pipeline pressure
gauge is damaged.
No “O2 Supply
Failure” alarm
occurs when the O2
pressure is low or
this alarm occurs
when the O2 supply
pressure is within
specifications.
No “Drive Gas
Pressure Low” alarm
occurs when the
drive gas pressure is
low or this alarm
occurs when the
drive gas pressure is
within
specifications.
The gas pressure switch
of the O2 supply inlet
assembly is ineffective.
The filter of pipeline gas
supply inlet assembly or
the PU tube of the
pipeline pressure gauge
is occluded or the
pressure gauge is
damaged.
The pressure switch on
the integrated pneumatic
circuit of the expiratory
valve assembly or the
PEEP safety valve is
ineffective. Or, the filter
on the integrated
pneumatic circuit of the
expiratory valve
assembly is occluded.
5-31
Replace the quick plug-in connector or PU
tube (when the PU tube is not damaged, if the
tube is long enough, cut off a small segment
of the tube where the quick plug-in connector
is met, and then insert the tube into position).
Check if the check valve of the pipeline gas
supplies inlet assembly leaks in the reverse
direction. Replace it if necessary. Check and
replace the damaged seal of the pipeline gas
supplies inlet assembly. If the problem
persists, replace the pipeline gas supplies inlet
assembly.
Check and repair the expiratory valve
assembly as per the procedures described in
5.3.4.2 Leak Test of Low-pressure
Pneumatic System.
Replace the pipeline pressure gauge.
1. After confirming that the pipeline gas
pressure is stable, check the PU tube of the
pipeline pressure gauge and filter of the
pipeline gas supply inlet assembly. If the tube
or the filer is occluded, replace it.
2. If the problem persists, replace the pipeline
pressure gauge.
Adjust the pressure switch of the O2 supply
inlet assembly to cause O2 supply pressure to
approach 0.2 MPa as much as possible within
the range of 0.15 to 0.25 MPa when this
alarm occurs. If the adjustment fails, replace
the pressure switch (refer to 5.3.2.3 Adjust
the Pressure Switch).
Adjust the pressure switch on the integrated
pneumatic circuit of the expiratory valve
assembly to cause drive gas pressure to
approach 0.14 MPa as much as possible
within the range of 0.05 to 0.2 MPa when this
alarm occurs. If the adjustment fails, replace
the pressure switch. If the problem persists
after the pressure switch is replaced, replace
the integrated pneumatic circuit of the
expiratory valve assembly (refer to 5.3.2.3
Adjust the Pressure Switch)。
5.3.2.1 Test the Pipeline Pressure Gauge and Correct the Regulator
Use the following tools to test the pipeline pressure gauge and regulator of the pipeline gas
supply inlet assembly:
 1 MPa (10bar) test pressure gauge (before the test, make sure that the 1 MPa (10bar) test
pressure gauge is in good condition) (quantity: 1)
 3106-04-06 adapter connector (quantity: 1)
 PU tube (4X200) (quantity: 1)
 PU tube (6X200) (quantity: 1)
Test procedures:
I O2 supply inlet assembly:
1. Turn off the pipeline gas supply and bleed the residual pressure through O2 flushing.
2. Disconnect tube 57. The end of the tube which connects the auxiliary O2 supply is not
pulled out but the end to Y piece is pulled out.
3. Connect 1MPa test pressure gauge to the above Y piece through “3106-04-06 adapter
connector”.
4.
5.
6.
7.
Turn on O2 pipeline supply and record the reading on the O2 pipeline pressure gauge.
Observe the test pressure gauge. If the reading on the test pressure gauge is not within
the range of 0.15 to 0.25 MPa (namely 1.5 to 2.5bar), adjust the regulator of the O2
supply inlet assembly to cause the reading on the test pressure gauge to reach 0.2 MPa
(namely, 2bar). For operations of the regulator, refer to 5.3.2.4 Adjust the Regulator of
the Pipeline Gas Supply Inlet Assembly.
Turn off the pipeline gas supply and bleed the residual pressure through O2 flushing.
Reconnect tube 57.
Disconnect tube 39 which connects the O2 supply inlet assembly to the O2 pipeline
pressure gauge. Remove the end of tube to the O2 supply inlet assembly.
5-32
8.
Connect 1MPa test pressure gauge to the outlet of O2 supply inlet assembly through
“3106-04-06 adapter connector”.
9.
Turn on the pipeline gas supply and record the reading on the test pressure gauge. If the
difference between this reading and the reading on the O2 pipeline pressure gauge is
more than 0.1 MPa (1bar), it indicates that the O2 pipeline pressure gauge is damaged.
Handle this problem as described in the troubleshooting table.
10. Reconnect tube 39.
Note 1: For numbers of all PU tubes, refer to 1.2.2 Pneumatic Connection and 1.2.3
Connections between Pneumatic Circuit, Breathing System and Ventilator Control Board.
II N2O supply inlet assembly:
1. Turn off the pipeline gas supply. Open the needle valve to bleed the residual pressure
and close the needle valve. Disconnect tube 48. The end of the tube which connects the
ORC is pulled out but the other end is not pulled out.
2. Connect 1MPa test pressure gauge, the pulled-out end of tube 48, and ORC N2O outlet
through “3106-04-06 adapter connector” and Y piece (17).
3.
4.
5.
Turn on N2O and O2 pipeline supplies. Adjust the regulator of the N2O supply inlet
assembly to the same value as measured/set for the O2 supply inlet assembly (see step 4
of O2 supply inlet assembly) Record the reading on the N2O pipeline pressure gauge.
Turn off N2O pipeline supply and bleed the residual pressure by opening the N2O flow
regulator.
Reconnect tube 48.
5-33
6.
7.
8.
9.
Pull out No.40 PU tube which connects the N2O supply inlet assembly to the N2O
pipeline pressure gauge. Remove the tube end which connects N2O supply inlet
assembly.
Connect 1MPa test pressure gauge to the outlet of N2O supply inlet assembly through
“3106-04-06 adapter connector”.
Turn on the N2O pipeline supply and record the reading on the test pressure gauge. If
the difference between this reading and the reading on the N2O pipeline pressure gauge
is more than 0.1 MPa (1bar), it indicates that the N2O pipeline pressure gauge is
damaged. Handle this problem as described in the troubleshooting table.
Reconnect tubing to pressure gauge. Reconnect tube 40.
III AIR supply inlet assembly:
1. Turn off the pipeline gas supply. Disconnect tube 67. The end of the tube which
connects auxiliary gas supply is not pulled out but the other end which connects the Y
piece is pulled out.
2. Connect 1MPa test pressure gauge to the above Y piece through “3106-04-06 adapter
connector”.
3.
4.
Turn on AIR pipeline supply. If the reading on the test pressure gauge is not within the
range of 0.2±0.05 MPa (2.0±0. 5bar), adjust the regulator to cause the reading on the test
pressure gauge to reach 0.2 MPa (2.0bar). Record the reading on the AIR pipeline
pressure gauge.
Turn off AIR pipeline supply and bleed the residual pressure by opening the AIR flow
regulator.
5-34
5.
6.
7.
8.
9.
Re-connect tube 67.
Pull out No.41 PU tube which connects the AIR supply inlet assembly to the AIR
pipeline pressure gauge. Remove the tube end which connects AIR supply inlet
assembly.
Connect 1MPa test pressure gauge to the outlet of AIR supply inlet assembly through
“3106-04-06 adapter connector”.
Turn on the AIR pipeline supply and record the reading on the test pressure gauge. If the
difference between this reading and the reading on the AIR pipeline pressure gauge is
more than 0.1 MPa (1.0 bar), it indicates that the AIR pipeline pressure gauge is
damaged. Handle this problem as described in the troubleshooting table.
Reconnect PU tube No.41 to the pressure gauge.
5.3.2.2 Test the Pressure Switch
Use the following tools to verify the pressure switches of the O2 supply inlet assembly and
the expiratory valve assembly are within specifications:
 1 MPa (1.0 bar) test pressure gauge (quantity:1)
 3106-04-06 adapter connector (quantity:1)
 3106-06-08 adapter connector (quantity:1)
 3140-08-00 Y piece (quantity:1)
 PU tube (8X200) (quantity:2)
 PU tube (6X200) (quantity:1)
 PU tube (4X200) (quantity:1)
Test procedures:
1. Turn off the pipeline gas supply and bleed the residual pressure by pushing the O2 flush
button.
2. Disconnect tube 47. The end of the tube which connects pressure regulator assembly is
pulled out but the other end is not pulled out.
3. Connect one PU tube (8X200) to the O2 inlet of pressure regulator assembly and
connect the other end of the PU tube and also the pulled-out end of tube 47 to the two
connectors of “3140-08-00 Y piece” respectively.
4. Connect the test pressure gauge to the third connector of “3140-08-00 Y piece” through
“3106-06-08 adapter connector” and “3106-04-06 adapter connector”.
5-35
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Turn on the O2 pipeline supply.
Turn on the machine to enter Standby.
Turn off all flow regulators.
Turn off the pipeline gas supply (if the reading on the test pressure gauge begins to fall
dramatically and continuously after the gas supply is turned off, it indicates that there
are one or more leaks in the O2 supply inlet assembly, expiratory valve assembly, O2
flush button assembly, system switch assembly, and/or the O2 flow regulator. Perform
the subsequent operations after the leaks are serviced. Failures can be located by using
the methods described in section 5.3.3 Anesthetic Gas Delivery System and 5.3.4
Breathing System except O2 supply inlet assembly related failures).
Manually adjust the O2 flow regulator until O2 flow is approximately 1 L/min, causing
the reading on the test pressure gauge to fall gradually to 0.25 MPa (2.5bar).
Turn off O2 flow to cause the reading on the test pressure gauge not to fall. If the “O2
Supply Failure” alarm occurs 10 seconds later, it indicates that the pressure switch of the
O2 supply inlet assembly is defective. Troubleshoot this problem as described in the
relevant failure table.
Adjust the O2 flow regulator until O2 flow is approximately 0.5 L/min, causing the
reading on the test pressure gauge to fall gradually to 0.2 MPa (2bar).
Turn off O2 flow to cause the reading on the test pressure gauge not to fall. If the “Drive
Gas Pressure Low” alarm occurs 10 seconds later, it indicates that the pressure switch on
the integrated pneumatic circuit of the expiratory valve assembly is defective.
Troubleshoot this problem as described in the relevant failure table.
Adjust the O2 flow regulator until O2 flow is approximately 0.3 L/min, causing the
reading on the test pressure gauge to fall gradually to 0.15 MPa (1.5bar).
Turn off O2 flow to cause the reading on the test pressure gauge not to fall. If the “O2
Supply Failure” alarm does not occur 10 seconds later, it indicates that the pressure
switch of the O2 supply inlet assembly is defective. Troubleshoot this problem as
described in the relevant failure table.
Adjust the O2 flow regulator until O2 flow is approximately 0.3 L/min, causing the
reading on the test pressure gauge to fall gradually to 0.05 MPa (0.5bar).
Turn off O2 flow to cause the reading on the test pressure gauge not to fall. If the “Drive
Gas Pressure Low” alarm does not occur 10 seconds later, it indicates that the pressure
switch on the integrated pneumatic circuit of the expiratory valve assembly is defective.
Troubleshoot this problem as described in the relevant failure table.
5-36
5.3.2.3 Adjust the Pressure Switch
Adjust the O2 supply pressure switch and drive gas pressure switch as described below.
Use a flathead screwdriver to adjust the O2 supply pressure switch as shown below. Turn for
small degrees each time such as 30 degrees. Note that turning the pressure switch clockwise
will decrease its alarm limits and counterclockwise increase its alarm limits. Test the
assembly after each pressure adjustment is made. Repeat until the pressure switch is properly
adjusted and is within specification (nominal value 220kPa+/-10kPa).
5.3.2.4 Adjust the Regulator of the Pipeline Gas Supply Inlet Assembly
Pull up the knob cover of the regulator. Turn the cover clockwise to increase pressure or
counterclockwise to decrease pressure, as shown below. Bleed the inside pressure of the
pipeline gas supply inlet assembly after each pressure adjustment is made. Then, turn on the
pipeline gas supply again. Observe the adjusted pressure through the test pressure gauge.
Adjust it to 200kPa.
5-37
5.3.3 Anesthetic Gas Delivery System
The following table lists anaesthetic gas delivery system related failures.
Failure description
Possible cause
Recommended action
Leak
The O2 flush button assembly
leaks.
The system switch assembly
leaks.
The vaporizer is installed
improperly, which results in
leak.
The seal between the vaporizer
manifold assembly and the
vaporizer is damaged.
The seal between the vaporizer
manifold inside and the
connection or the rubber plain
washer between the vaporizer
manifold inside and the spring
is damaged or dirty.
The vaporizer manifold
assembly is damaged.
The total flowmeter leaks.
The ORC assembly leaks.
The flow regulator leaks.
The restrictor leaks.
The pressure relief valve at the
breathing connection leaks.
The ACGO assembly leaks.
The fresh gas connections of
the circuit adapter assembly
leak.
The gas supplies cannot be
turned off after the machine
is turned off.
The machine cannot be
powered on after turned on.
The flowmeter float
indicates inaccurate value
or remains unmoved.
The knob of the flow
regulator gets loose.
N2O supply cannot be cut
off in case of O2 supply
failure.
The seal inside the system
switch assembly is damaged.
Replace the seal on the O2 flush
button assembly or replace the O2
flush button assembly.
Replace the seal on the system
switch assembly or replace the
systems switch assembly.
Re-install the vaporizer.
Clean or replace the seal. The seal
should be replaced at least once
per year as required.
Clean the sealing part or replace
the damaged seal and rubber plain
washer.
Replace the vaporizer manifold
assembly.
Replace the total flowmeter.
Replace the ORC assembly.
Replace the flow regulator.
Re-calibrate after the restrictor is
replaced (for calibration, refer to
“Instructions of Use for FPM-65
Flow and Pressure Detection
Device”
Check and replace the defective
pressure relief valve.
Replace the ACGO assembly.
Check the seals and tubes at the
fresh gas connections. Replace
the defective parts and re-install
the parts.
Replace the system switch.
The contact switch is
ineffective.
The float of total flowmeter is
damaged.
Replace the contact switch of the
system switch assembly.
Replace the float of total
flowmeter.
The flow regulator is
damaged.
The ORC assembly is
damaged.
Replace the flow regulator.
5-38
Replace the ORC assembly.
5.3.3.1 Leak Test of the O2 Flush Button Assembly
Perform a leak test of the O2 flush button assembly by using the following tools:
 Negative pressure ball (quantity:1)
 3106-06-00 adapter connector (quantity:1)
 PU tube (6X100) (quantity:1)
Test procedures:
1. Turn off the pipeline gas supplies and bleed the residual pressure through O2 flushing.
2. Remove the work surface. Pull out No.52 PU tube which connects the O2 flush button
assembly to the ACGO assembly. Disconnect at the ACGO end.
3. Connect the inlet of the negative pressure ball to PU No.52 through 3106-06-00 adapter
connector and then flatten the negative pressure ball to remove the gas inside.
4. Release the negative pressure ball as shown below. If the negative pressure ball is fully
expanded within 30 seconds, it indicates that the O2 flush button assembly is damaged.
5.3.3.2 Leak Test of the Flowmeter Related Assembly
Perform a leak test of the flowmeter related assembly (from flow regulator to total flowmeter)
by using the following tools:
 Negative pressure ball (quantity:1)
 3106-06-00 adapter connector (quantity:1)
 3106-06-08 adapter connector (quantity:1)
 3126-06-00 tube plug (quantity:3)
 3126-08-00 tube plug (quantity:1)
 PU tube (6X100) (quantity:1)
Test procedures:
1. Turn off the pipeline gas supplies and turn on the system switch. Bleed the residual
pressure by opening the flow regulators.
2. Turn off the system switch. Turn on the flow regulators and turn them counterclockwise
for more than half a circle.
3. Pull out No.25 PU tube which connects the total flowmeter to the vaporizer manifold
assembly. Disconnect at the vaporizer manifold end.
5-39
4.
5.
Pull out No.45, 49 and 51 PU tubes which connect with the flow regulator. Disconnect
at flow regulator end.
Occlude the pulled-out tube end on the flow regulator by using three 3126-06-00 tube
plugs.
6.
Connect the other end of the negative pressure ball to the pulled-out end of No.25 PU
tube through 3106-06-08 adapter connector, as shown below, and then flatten the
negative pressure ball to remove the gas inside.
7.
Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the total flowmeter assembly is damaged. In this case, pull
out the tube plug at the inlet of needle valve and perform the following operations.
Pull out No.26 PU tube which connects the back pressure regulator to the total
flowmeter. Disconnect at the total flowmeter end.
8.
5-40
9.
Occlude the pulled-out tube end on the total flowmeter by using 3126-08-00 tube plug.
10. Compress the negative pressure ball still connected to tube 25 to bleed the air inside.
11. Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the total flowmeter leaks.
12. Re-connect tube 25. Disconnect tube 58 and pull out its end connecting the back
pressure valve. Disconnect tube 26 and pull out its end connecting the total flowmeter.
13. Occlude the pulled-out tube end on the back pressure regulator by using one 3126-08-00
tube plug and connect the negative pressure ball to the pulled-out end of No.26 PU tube
through 3106-06-08 adapter connector.
5-41
14. Compress the negative pressure ball to bleed the air inside.
15. Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the back pressure regulator leaks.
16. Pull out No.27, 28 and 29 PU tubes which connect the flow sensor to the gas mixer.
Disconnect at the gas mixer end.
17. Occlude the pulled-out tube end on the gas mixer by using three 3126-06-00 tube plugs.
18. Disconnect tube 58 and plug out its end connecting the back pressure valve. Connect the
negative pressure ball to the pulled-out end of tube 58 through “3106-06-08 adapter
connector”.
19. Flatten the negative pressure ball to remove the gas inside.
20. Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the gas mixer leaks.
21. For N2O branch, disconnect tube 32 and pull out its end connecting the sensor
(disconnect tube 31 for AIR branch and tube 78 for O2 branch.
22. Occlude the pulled-out tube end on the flow sensor by using 3126-06-00 tube plug.
5-42
23. For N2O branch, disconnect tube 27, pull out its end connecting gas mixer and connect
it to the gas inlet of the negative pressure ball through “3106-06-00 adapter connector”
(disconnect tube 28 for AIR branch and tube 29 for O2 branch). Compress the negative
pressure ball to bleed the gas inside.
24. Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the flow sensor leaks.
25. For N2O branch, disconnect tube 49 and pull out its end connecting the needle valve
(disconnect tube 51 for AIR branch and tube 45 for O2 branch).
26. Occlude the pulled-out tube end on the needle valve by using 3126-06-00 tube plug.
5-43
27. For N2O branch, disconnect tube 91, pull out its end connecting the needle valve, and
connect the gas inlet of the negative pressure ball to the gas outlet of the needle valve
through “3106-06-00 adapter connector” and PU tube (6X200) (disconnect tube 90 for
AIR branch and tube 73 for O2 branch). Compress the negative pressure ball to bleed
the gas inside.
28. Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the needle valve leaks.
5-44
5.3.3.3 Leak Test of the System Switch Assembly
Perform a leak test of the system switch assembly by using the following tools:
 Negative pressure ball (quantity:1)
 3106-06-00 adapter connector (quantity:1)
 3106-06-08 adapter connector (quantity:1)
 3126-08-00 tube plug (quantity:1)
 PU tube (6X100) (quantity:1)
Test procedures:
1. Turn off the pipeline gas supplies and turn on the system switch. Bleed the residual
pressure by opening the flow regulators.
2. Pull out No.45 which connects the system switch assembly to the flow regulator.
Disconnect at the flow regulator end and connect the pulled-out tube end to the negative
ball through one 3106-06-00 adapter connector.
3. Pull out No.43 which connects the system switch assembly to the Y piece. Disconnect at
the Y piece end and occlude the pulled-out tube end through one 3106-06-08 adapter
connector and one 3126-08-00 tube plug.
4. Flatten the negative pressure ball to remove the gas inside.
5.
6.
7.
8.
Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that tube connected with the system switch assembly is damaged.
Turn off the system switch.
Pull out the 3126-08-00 tube plug which was used to occlude tube No.43 before.
Flatten the negative pressure ball to remove the gas inside.
5-45
9.
Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds during one of the two tests, it indicates that the system switch assembly is
damaged.
5.3.3.4 Leak Test of the Oxygen Ratio Controller (ORC)
Perform a leak test of the ORC assembly by using the following tools:
 Negative pressure ball (quantity:1)
 3106-06-00 adapter connector (quantity:1)
 3126-06-00 tube plug (quantity:2)
 3126-04-00 tube plug (quantity:1)
 PU tube (6X100) (quantity:1)
Test procedures:
1. Disconnect tube 3 and pull out the end of the tube which connects to the Y piece.
Occlude the pulled-out end with “3106-06-00 adapter connector and 3126-06-00 tube
plug.
2. Disconnect tube 46 and pull out the end of the tube which connects to the Y piece.
Connect the pulled- out end to the negative pressure ball directly.
3. Flatten the negative pressure ball to remove the gas inside.
PU tube No.33
PU tube No.46
4.
5.
Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the Oxygen Ratio Controller is damaged. Handle this
problem as described in the troubleshooting table. If not, continue the following test.
Re-connect the tube.
5-46
6.
Disconnect tubes 48, 49, and 32. Pull out the tube ends which connect the ORC.
Occlude the pulled-out ends with two 3126-06-00 tube plugs and one 3126-04-00 tube
plug. Disconnect tube 30. The end of the tube which connects the ORC is not pulled out
but the other end is pulled out and is connected to the negative pressure ball through
“3106-06-00 adapter connector”.
7.
8.
Flatten the negative pressure ball to remove the gas inside.
Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the Oxygen Ratio Controller is damaged. Handle this
problem as described in the troubleshooting table.
5-47
5.3.3.5 Leak Test of the Vaporizer Manifold Assembly
Perform a leak test of the vaporizer manifold assembly by using the following tools:
 Negative pressure ball (quantity:1)
 3106-06-08 adapter connector (quantity:1)
 3126-06-00 tube plug (quantity:1)
 PU tube (6X100) (quantity:1)
 PU tube (8X200) (quantity:1)
 Vaporizer manifold test fixture (quantity:1)
Test procedures:
1. Turn off the system switch.
2. Remove the vaporizer.
3.
4.
5.
6.
Pull out No.25 PU tube which connects the total flowmeter to the vaporizer manifold
assembly. Disconnect at the vaporizer manifold end and occlude it with 3126-08-00 tube
plug
Pull out No.55 PU tube which connects the vaporizer manifold assembly to the ACGO
assembly. The end of the tube which connects the vaporizer manifold assembly is pulled
out, and connected with the negative ball through one 3106-06-08 adapter connector
Flatten the negative pressure ball to remove the gas inside.
Release the negative pressure ball. If the negative pressure ball is fully expanded within
30s, it indicates that the rubber plain washers or its upper surface contacted mechanical
surface are damaged. Handle this problem as described in the troubleshooting table. If
not, continue the following tests.
5-48
7.
Remove the seal ring, and mount the vaporizer manifold test fixture onto the connector
of the vaporizer manifold assembly (remove the seal between the connector and the
vaporizer when mounting the test fixture)
8.
Repeat step 5 and step 6 every time when the vaporizer manifold test fixture is
transferred to the next position. Once the negative pressure ball is fully expanded within
30s, it indicates that the rubber plain washers or its lower surface contacted mechanical
surface are damaged. Handle this problem as described in the troubleshooting table. If
the four tests are all past, then continue the following tests.
Put the seal ring back, mount the vaporizer and turn it on.
9.
10. Repeat step 5 and step 6 every time when the vaporizer manifold test fixture is
transferred to the next position. Once the negative pressure ball is fully expanded within
30s, it indicates that the seal rings are damaged. If the two tests are both past, it
indicated that the vaporizer manifold assembly and the four seal rings are in good
condition.
5-49
5.3.4 Breathing System
The following table lists breathing system related failures.
Failure
description
Leak
Possible cause
Recommended action
The sodalime canister is not installed
properly.
Re-install the sodalime canister.
Remove the sodalime at the
sealing connection. Ensure the
correct installation of sadalime
canister.
Replace the sealing component of
the sodalime canister assembly. It
is required to replace the seal once
a year.
The sealing piece for the absorbent
canister assembly is damaged, including
the two sealing cushions （049-000142-00
and 049-000145-00）which are in direct
contact with the absorbent canister and the
two sealing rings (082-000629-00) on the
bypass upper cover which are in contact
with the circuit bottom housing.
The seal for the bag arm is damaged.
The water collection cup gets loose.
The seal for the water collection cup
assembly is damaged.
The seal for the circuit adapter assembly is
damaged.
The bellows housing or bellows is not
installed properly.
The bellows sealing cushion falls off or is
damaged.
The valve cover of the breathing valve
assembly is not installed properly.
The seal for the valve cover of the
breathing valve assembly is damaged.
The O2 sensor is not installed properly.
The seal for the O2 sensor or the seal for
the O2 sensor plug is damaged.
The breathing tube connecting the patient
is damaged.
The bellows is damaged.
5-50
Replace the seal for the bag arm.
It is required to replace the seal
once a year.
Check and tighten the water
collection cup.
Replace the seal for the water
collection cup assembly. It is
required to replace the seal once a
year.
Replace the seal, which is
required to be replaced once a
year.
Re-install the bellows housing or
bellows. Ensure their correct
installation.
Replace the bellows sealing
cushion, which is required to be
replaced once a year.
Re-install the valve cover and
ensure its correct installation.
Replace the seal.
Re-install the O2 sensor and
ensure its correct installation.
Replace the seal.
Replace the breathing tube.
Replace the bellows, which is
required to be replaced once a
year.
Failure
description
O2
concentration
measurement
fails or has
great
deviations.
The airway
pressure
gauge shows
inaccurate
reading or its
pointer
cannot move.
Irregular
flow wave is
displayed.
Possible cause
Recommended action
The sealing connection of other parts of
the breathing system is damaged.
Repair or replace the sealing
connection as per the procedures
described in 5.3.2.4.
The condensate valve of the canister
assembly is not installed properly or the
seal inside is damaged.
There is water built up on the measurement
surface of O2 sensor.
The O2 sensor is not calibrated.
Re-install the condensate valve or
replace the damaged seal inside.
The O2 sensor is damaged.
Remove the built-up water and
allow the O2 sensor to air dry.
Calibrate the O2 sensor as per
4.3.6O2 Sensor Calibration.
Replace the O2 sensor.
The airway pressure gauge is damaged.
Replace the airway pressure
gauge.
The flow sensor assembly is not installed
properly.
There is water built up inside the flow
sensor assembly.
The membrane of the flow sensor
assembly is distorted, dirty or its inside
resistance changes. Zero drift occurs to the
pressure sensor of the fresh flow sensor
board.
The flow sensor is damaged.
The pressure sensor on the fresh gas flow
sensor board is defective.
The flow sensor pressure sampling
pipeline leaks.
Re-install the flow sensor
assembly.
Remove the flow sensor assembly
and clear its inside water build-up.
Enter the service mode and
calibrate the flow sensor as per
4.3.2.
Replace the flow sensor assembly.
Replace the fresh gas flow sensor
board.
Repair the flow sensor pressure
sampling pipeline after checking
as per the procedures described in
5.3.4.1.
5.3.4.1 Leak Test of Flow Sensor Pressure Sampling Pipeline
If irregular flow waveform is displayed, the flow sensor pressure sampling pipeline may be
leaky. Perform the leak test by using the following tools:
 Anesthesia machine calibration device (quantity:1)
 Flow sensor pressure sampling pipeline test fixture (quantity:1)
 Circuit adapter test fixture (quantity:1)
 Injector (quantity:1)

Φ6 silicone tube (quantity:3)

Y piece (quantity:1)
5-51
Test procedures:
I Leak test of the flow sensor pressure sampling pipeline (the four sampling pipelines of the
expiratory and inspiratory flow sensors are all tested)
1. Turn off the system switch.
2. Install the breathing circuit properly.
3. Remove the flow sensor assembly.
4. Mount the flow sensor pressure sampling pipeline test fixture onto the position where
the flow sensor assembly was originally mounted. Tighten the breathing connector
rotary cap.
5.
Connect the Φ6 silicone tubes to the pressure sensor connector (positive pressure end)
on the anesthesia machine calibration device), injector (before mounting, pull out the
push rod of the injector) connector and the connector for the flow sensor pressure
sampling pipeline test fixture by using a Y piece, as shown below.
6.
Push in the push rod of the injector to let the pressure reading on the anesthesia machine
calibration device rise to 70 to 90 cmH2O and then stop pushing. Keep the relative
position between the push rod and the injector unchanged. If the pressure reading on the
anesthesia machine calibration device does not fall more than 5cmH2O within 15 s, this
test is passed.
5-52
II Leak test of the flow sensor pressure sampling pipeline inside the main unit (perform this
test if test “I” fails)
1. Mount the circuit adapter test fixture onto the circuit adapter assembly.
2.
Connect the Φ6 silicone tubes to the pressure sensor connector (positive pressure end)
on the anesthesia machine calibration device), injector (before mounting, pull out the
push rod of the injector) connector and the connector (one connector out of No.3
through 6 connectors on the test fixture) for the circuit adapter test fixture by using a Y
piece, as shown below.
3.
Push in the push rod of the injector to let the pressure reading on the anesthesia machine
calibration device rise to 70 to 90 cmH2O and then stop pushing. Keep the relative
position between the push rod and the injector unchanged. If the pressure reading on the
anesthesia machine calibration device does not fall more than 5cmH2O within 15s, this
test is passed.
If test “I” is failed and “II” passed, it indicates that the flow sensor pressure sampling pipeline
on the breathing system is damaged. In this case, replace the breathing system. If both tests
“I” and “II” are failed, check the sampling lines and connectors inside the main unit, seals
and solenoid valve of the circuit adapter assembly until test “II” is passed. Then perform test
“I”. If test “I” is still failed, it indicates the flow sensor pressure sampling pipeline on the
breathing system is damaged. In this case, replace the breathing system.
5.3.4.2 Leak Test of Low-pressure Pneumatic System
After making sure that the flow sensor pressure sampling pipeline is not leaky, perform leak
tests of the low-pressure pneumatic system as shown in the following figures (figures a
through d).
1. Leak test of the
breathing system in the
mechanical ventilation
mode
Pass
Figure b Leak test of the
part only working in the
manual ventilation mode
Figure d Leak test of the
breathing system
Fail
Pass
Re-install the bellows housing and
sodalime canister (clean the canister
mouth and sealing cushion) and
check the folding bag.
Completed
1. Leak test of the
breathing system
in the mechanical
ventilation mode
5-53
Pass
Fail
4.Leak test of all
pipelines on the
circuit adapter
Fail
Figure c Leak
test of the
pipelines inside
the main unit
Figure a System leak test
Pass
2. Leak test of the
breathing system
in the manual
ventilation mode
Fail
Check the
manual bag and
the seal for bag
arm
Completed
7. Check the APL valve. support
tube on the medium plate, and Completed
sealing components of the Auto/
Manual ventilation switch
assembly
Figure b Leak test of
the part only working
in the manual
ventilation mode
Pass
Fail
Note: After repairing the faulty part, repeat the latest failed test prior to the current step. If it is still failed,
continue leak test following the flow chart. But you can skip the step to which the passed test or repaired
part corresponds.
For example, after the manual bag is checked, found damaged and replaced, you should return to “Leak
test of the breathing system in the manual ventilation mode” at the very beginning. If“2”is still failed,
you can skip “Check the manual bag and the seal for bag arm”and directly go to the next step.
Replace the
patient circuit
End
Figure b Leak test of the part only working in the manual ventilation mode
Fail to pass the leak test of
fresh gas and ACGO pipelines
Fail to pass the leak test of
drive gas pipelines
Figure b Leak test of the
part only working in the
manual ventilation mode
8. Check
the ACGO
assembly
Pass
Completed
Check the
expiratory
valve assembly
4.Leak test of all
pipelines on the
circuit adapter
Pass
Fail
Check the sealing
components of the circuit
adapter assembly
Figure c Leak test of the pipelines inside the main unit
5-54
1. Leak test of the
breathing system
in the mechanical
ventilation mode
Fail
Figure d Leak test of the
breathing system
Check the lifting device
and sealing components
of the sodalime canister
Fail
2. Leak test of the
breathing system
in the manual
ventilation mode
Fail
6. Check the
accessories and
circuit
connectors
Completed
2. Leak test of the
breathing system
in the manual
ventilation mode
Fail
5. Check the
lifting device and
sodalime canister
Pass
Completed
Pass
Pass
1. Leak test of the
breathing system
in the auto
ventilation mode
End
7. Check the APL valve.
support tube on the
medium plate, and sealing
components of the Auto/
Manual ventilation switch
assembly
Pass
2. Leak test of the
breathing system
in the manual
ventilation mode
Fail Replace the patient
circuit
Fail
3. Check the
bellows housing
and bag position of
the Auto/Manual
ventilation switch
Fail
Check the bellows
housing, bellows sealing
cushion, and seal for
lower cover 2 assembly
Completed
1. Leak test of the
breathing system
in the auto
ventilation mode
Pass
End
Fail
Check the
Auto/Manual
ventilation switch
1. Leak test of the
breathing system
in the auto
ventilation mode
Pass
Pass
Fail
End
Note: After repairing the faulty part, repeat the latest failed test prior to the current
step. If it is still failed, continue leak test following the flow chart. But you can skip
the step so which the passed test or repaired part corresponds.
Replace the patient
circuit
Figure d Leak test of the breathing system
1.
2.
Leak test in the mechanical ventilation mode
Perform leak test as described in 3.6.2.
Leak test of the breathing system in the manual ventilation mode
Tools required:
 Breathing tube (quantity: 3)
 Breathing tube Y piece (quantity: 1)
Test procedures:
（1）
Let the system enter Standby.
（2）
Mount the breathing circuit properly.
（3）
Set the Auto/Manual switch to the Manual position.
（4）
Set the pressure value of the APL valve to maximum.
5-55
（5） Occlude the patient port and bag arm port by using three breathing tubes and one Y
piece as shown below.
（6）
Turn on the O2 flow regulator and adjust O2 flow to 0.2L/min,
（7） Push the O2 flush button to let the reading on the Paw pressure gauge rise to
30cmH2O.
（8） Stop O2 flushing. If the reading on the Paw pressure gauge falls under 30cmH2O,
this test is failed.
（9） If the reading on the Paw pressure gauge rises rapidly, to prevent defective APL
valve from damaging the Paw pressure gauge, note to turn off the O2 flow regulator
timely to prevent the overrange of the Paw pressure gauge (The test which involves O2
flow regulator turned off due to this reason is considered to be passed).
3.
Check the bellows housing and the Manual position of the Auto/Manual switch
Tools required:
 Anesthesia machine calibration device (quantity: 1)
 Circuit adapter test fixture (quantity: 1)
 Injector (quantity: 1)

Φ6 silicone tube (quantity: 2)


PU tube (6X300) (quantity: 1)
Y piece (quantity: 1)
Test procedures:
（1）
Remove the bellows.
（2）
Mount the bellows housing properly.
（3）
Set the Auto/Manual switch to the Manual position.
（4）
Remove the breathing circuit
（5）
Mount the circuit adapter test fixture onto the breathing circuit.
5-56
（6） Connect the Φ6 silicone tubes and PU tube (6X300) to the injector connector,
pressure sensor (of the anesthesia machine calibration device) connector (positive
pressure end), and No.2 connector to which drive gas corresponds on the circuit adapter
test fixture by using a Y piece, as shown below.
(7) Push in the push rod of the injector to let the pressure reading on the anesthesia machine
calibration device rise to 30 to 35 cmH2O and then stop pushing. Keep the relative
position between the push rod and the injector unchanged. If the pressure reading on the
anesthesia machine calibration device falls more than 10cmH2O within 30s, this test is
failed. It indicates that the bellows housing or the Manual position of the Auto/Manual
switch is leaky. (Removing the bag arm indicated in the picture has no impact upon the
test because the drive gas does not pass through the bag arm.)
4. Leak test of all pipelines on the circuit adapter
Tools required:
 Negative pressure ball (quantity: 1)
 Circuit adapter test fixture (quantity: 1)
 PU tube (6X100) (quantity: 1)
Test procedures:
（1）
Turn off the system switch.
（2）
Turn off the flow regulators.
（3）
Remove the breathing system.
（4）
Mount the circuit adapter test fixture onto the circuit adapter.
5-57
（5） Flatten the negative pressure ball to remove the gas inside. Then re-install the plug
to seal the ball. Connect the other end of the negative pressure ball to the No.7 connector
(on the circuit adapter test fixture) fresh gas pipeline of the circuit adapter test fixture, as
shown below.
（6） Release the negative pressure ball. If the negative pressure ball is fully expanded
within 30 seconds, it indicates that the test of fresh gas pipeline has failed. Locate the
leak inside the main unit as per the method described in 1.3.4.1 Anesthetic Gas Delivery
System.
（7）
Turn on the system switch and let the systems enter Standby.
（8） Select [Main] → [Service] → [Diagnostic] → [Valves] to set the A/D value of the
PEEP valve to make PEEP exceed 50 cmH2O. Set the A/D value of the inspiratory
valve to “0” to produce 0 L/min of flow. Set PEEP safety valve to ON, as shown below.
5-58
(9) Flatten the negative pressure ball to remove the gas inside. Then re-install the plug to
seal the ball. Connect the other end of the negative pressure ball to No.1 connector to
which drive gas pipeline of the circuit adapter test fixture corresponds, as shown below.
(10) Release the negative pressure ball. If the negative pressure ball is fully expanded within
30 seconds, it indicates that the test of the drive gas pipeline has failed. Check the
expiratory valve assembly and the drive gas related pipeline inside the main unit.
5.
Check the absorb canister assembly
Tools required:
 VT PLUS (quantity: 1)
 Lucer adapter connector (quantity: 1)
 Injector (quantity: 1)

Φ6 silicone tube (quantity: 2)






PU tube (6X300) (quantity: 1)
Breathing tube (quantity: 3)
Y piece (quantity: 1)
Breathing tube Y piece (quantity: 1)
Breathing tube adapter connector (quantity: 1)
T-shaped Allen wrench (quantity: 1)
Test procedures:
（1）
Turn off the system switch.
（2）
Disassemble the pre-pak assembly and remove the breathing circuit.
（3）
Mount the pre-pak assembly.
5-59
（4） Remove the seals on the two connectors of the absorb canister assembly. Connect
the two connectors of the lifting device by using two breathing tubes and one breathing
tube Y piece. The other end of the breathing tube Y piece is connected to the breathing
tube adapter connector through another breathing tube. Connect the injector connector,
pressure sensor (of the anesthesia machine calibration device) connector (positive
pressure end), and the breathing tube adapter connector to a Y piece, as shown below.
（5） Push in the push rod of the injector to cause the pressure reading on the anesthesia
machine calibration device rise to 30 to 35 cmH2O and then stop pushing. Keep the
relative position between the push rod and the injector unchanged. If the pressure
reading on the anesthesia machine calibration device falls more than 10cmH2O within
30 seconds, it indicates that absorb canister assembly are leaky. The test is failed. This
step is required when the absorbent canister assembly is in bypass on or bypass off
status.
Connected to the Φ6 silicone tube
Connected to the VT plus
Turn the blue part to lock the connector to the VT plus
Lucer adapter connector
Lucer adapter connector
Bypass off
5-60
Lucer adapter connector
Bypass on
(6) Check the seals on the two connections of the lifting device. It they are damaged,
replace the seal and then re-mount the lifting device onto the breathing system.
6.
Check the accessories and circuit inspiratory/expiratory part
Test procedures:
（1）
Turn off the system switch.
（2）
Check the manual bag and replace if damaged.
（3）
Check the breathing tube and replace if damaged.
（4）
Remove the Paw pressure gauge. Check the seal and replace if found damaged.
（5）
Remove the water collection cup. Check the seal and replace if found damaged.
（6） Remove the O2 sensor (if there is no O2 sensor, remove the plug where the O2
sensor should be installed). Check the seal and replace if damaged.
（7）
Remove the check valve dome. Check the seal and replace if damaged.
（8）
Remove the bag arm. Check the seal and replace if damaged.
（9） Remove the prepak assembly as shown below. Check the seal and replace if
damaged.
Seal to be checked
5-61
7.
Check the APL valve, support tube on the median plate, and sealing components of the
Auto/Manual switch assembly
The test requires a T-shaped Allen wrench.
Test procedures:
（1）
Turn off the system switch.
（2）
Remove the APL valve. Check all seals and replace the defective ones.
（3） Remove the support tube on the median plate. Check the seals and replace the
defective ones.
（4）
Remove the Auto/Manual switch. Check the seals and replace the defective ones.
8. Check the ACGO assembly
Tools required:
 Negative pressure ball (quantity: 1)
 Circuit adapter test fixture (quantity: 1)
 PU tube (6X100) (quantity: 1)
 3106-08-10 adapter connector (quantity: 2)
 3126-06-00 tube plug (quantity: 1)
 3126-08-00 tube plug (quantity: 1)
 3126-10-00tube plug (quantity: 2)
Test procedures:
(1) Turn off the system switch.
(2) Pull out No.21 and 22 PU tubes which connect the ACGO assembly to the circuit
adapter. The ends of the tubes which connect the ACGO assembly are pulled out but the
other ends are not, as shown below.
(3) Occlude the pulled-out tube ends by using two 3126-10-00 tube plugs.
(4) Repeat steps 3 through 7 in “4 Leak test of all pipelines on the circuit adapter”. If the
test is failed, it indicates that the connectors of the circuit adapter or seals are damaged.
If there is leak, insert the pulled-out tubes into the ACGO assembly. Note that the
positions of black lines on PU tubes No.21 and 22 are same with those before the tubes
are pulled out.
(5) Pull out No.52 and 53 PU tubes which connect the O2 flush button assembly and the
vaporizer manifold assembly to the ACGO assembly. The ends of the tubes which
connect the ACGO assembly are pulled out but the other ends are not
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(6) Occlude the pulled-out tube ends by using 3126-06-00 and 3126-08-00 tube plugs, as
shown below.
(7) Repeat steps 3 through 7 in “4 Leak test of all pipelines on the circuit adapter”. If the
test fails, it indicates the ACGO assembly is damaged. Check the seals in the ACGO
assembly and replace any damaged seals.
5.3.5 Tidal Volume
The following table lists tidal volume inaccuracy related failures.
Failure
Possible cause
Recommended action
description
Inaccurate
tidal
volume
The flow sensor is not installed
properly.
The setting of fresh gas flow is
inappropriate.
There are significant leaks in the
breathing system and the fresh gas
flow is too low.
* There is water build-up inside the
flow sensor.
*The membrane of the flow sensor
assembly is distorted, dirty or its inside
resistance changes. Zero drift occurs to
the pressure sensor on the ventilator
control board.
*The flow sensor pressure sampling
pipeline is leaky.
*The flow sensor is damaged.
*The pressure sensor on the ventilator
control board is defective.
The inlet gas flow regulator on the
integrated pneumatic circuit of the
expiratory valve assembly is defective.
The current Plimit is set too low, which
causes expiration to start in advance.
The displayed TVe and TVi are not the
same.
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Re-install the flow sensor.
Adjust the fresh gas flow.
Repair the leaking points after checking as
per the procedures described in sections
1.3.4.1 Anesthetic Gas Delivery System and
1.3.4.3 Breathing System.
Remove the flow sensor and clear its inside
water build-up.
Enter the service mode and calibrate the flow
sensor as per 4.3.2 Flow Calibration
(Factory).
Repair the leaking points after checking as
per the procedures described in 5.3.4.1 Leak
Test of Flow Sensor Pressure Sampling
Pipeline.
Replace the flow sensor.
Replace the ventilator control board.
Replace the integrated pneumatic circuit of
the expiratory valve assembly or replace the
expiratory valve assembly.
Set Plimit to a higher value to cause Paw not
to exceed the limit.
In the valves test tool, compare the
measurement error made by three sensors
and judge whether to perform calibration as
per 4.3.2 Flow Calibration (Factory) .
In the above table, possible causes marked “*” are related to inaccurate measured values by
flow sensors. Do the following to detect if tidal volume inaccuracy results from “*” marked
causes.
1. Turn off the flow regulators.
2. Make sure that the patient is disconnected from the system and that the Auto/Manual
switch is set to the mechanical ventilation position.
3. Remove the bellows and then install the bellows housing properly.
4. Remove the water collection cup.
5. Connect the inspiration and expiration connectors together by using a breathing tube, as
shown below.
The water collection cup is
already removed.
6.
Turn on gas supplies and enter Standby.
7.
Select [Main] → [Service] → [Diagnostic] → [Valves] to set the A/D value of the
PEEP valve to make PEEP exceed 40 cmH2O. Set PEEP safety valve to ON, as shown
below.
8.
Set the A/D value of the inspiratory valve to cause the flow of inspiratory valve to reach
a certain value. In this case, the flows measured by the ventilator flow sensor,
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inspiratory flow sensor, and expiratory flow sensor should be the same. Test multiple
points by setting the A/D value of the inspiratory valve. For each point, the flows
measured by the three sensors should be the same. If not, the measured value by the
flow sensor is inaccurate. Troubleshoot the possible causes marked “*” in the above
table.
5.4 Sensor and Valve Related Failures
To use Diagnostic Tests to troubleshoot sensors or valves related failures, you must be
familiar with the one-to-one correspondence between the menu options on the Diagnostic
Tests screen and the actual pneumatic circuit and hardware components.
Correspondence between valve diagnostic tests screen and pneumatic
circuit
The following figure shows the one-to-one correspondence between the sensors & valves on
the valves-test tool screen and the actual components in the pneumatic circuit diagram.
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Correspondence between valve diagnostic tests screen and hardware
The following figure shows how the sampling lines of the sensors are actually connected on
the VCM.
5.4.1 Preparations before Using Diagnostic Tests
Make the following preparations before using the valves-test tool to locate the valves or
sensors related failures:
1 Connect the pneumatic circuit according to the type of sensor or valve to be checked.
Before using the Diagnostic Tests Menu: connect the tubes of the anesthesia machine
following the constant-flow connection method to check the flow sensors and
inspiratory valve. For details, refer to 4.3.2 Flow Calibration (Factory).
2. Make sure that the supply gas pressure is within specifications.
3. When the system is in Standby, select the [Main] shortcut key → [Service] →
[Diagnostic] to access the [Diagnostic] menu.
5.4.2 Zero Point Problems of Flow and Pressure Sensors
By using the [Diagnostic Tests], you can easily detect if the zero points of all the pressure
and flow sensors are within specifications.
To diagnose the zero points of the sensors:
1. Disconnect all gas supplies and make sure that the actual values of the sensors are “0”.
2. Check the A/D counts of the sensors in the valve-test tool menu, which are the zero
points of the sensors.
3. If the zero point of one sensor is outside of specifications, it indicates that the ventilator
control board is defective. You need to replace the board.
You can also detect the zero points of the sensors by referring to 3.6.3 Check the Sensor Zero
Point.
NOTE: For the normal range of sensors’ zero points, refer to 3.6.3 Check the Sensor Zero
Point.
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5.4.3 Connections and Measurement Problems of the Flow
Sensors
The flow sensor has two sampling lines. Connection errors include:
 Two sampling lines are connected reversely.
 One sampling line is not connected.
 Both sampling lines are not connected.
By using the Diagnostic Tests tool, you can detect if the sampling lines are connected
correctly.
 To diagnose the sampling line connection of the flow sensor:
1. Connect the tubes of the anesthesia machine following the constant-flow connection
method. Refer to 5.4.1.
2. Make sure that gas supplies are within specifications. In the [Diagnostic Tests ], PEEP
safety valve to ON and the D/A value of the PEEP valve to more than “1500”, making
sure that the PEEP valve closes at above 30 cmH2O.
3. Increase the D/A value of the inspiratory valve gradually and the A/D value of the flow
sensor should also increase. With the gradual increase of gas supplied,
 If the sampling A/D value of one flow sensor decreases gradually, it is possible that
the two sampling lines of the flow sensor are connected reversely.
 If the sampling A/D value of one flow sensor stays unchanged, it is possible that
the two sampling lines of the flow sensor are broken or not connected.
 If the sampling A/D value of one flow sensor nears saturation (above “4000”)
quickly, it is possible that the sampling line at the low pressure end (gas outlet end)
of the flow sensor is not connected.
4. If sampling line connection errors are detected, re-connect all sampling lines and verify
proper connection of lines.
 To diagnose the measurement error of the flow sensors:
After confirming that both the zero points of the sensors and the sampling line
connections of the sensors are correct, check the flow sensor accuracy:.
 With the gradual increase of actual flow, the measured value of the flow sensor
should also increase. Otherwise, the calibration data have errors. You need to
calibrate the flow sensor again.
 Compared with the measured value of the standard flow measurement device
(anesthesia machine calibration device), the measured value of the flow sensor
should be accurate. Otherwise, the calibration data have errors. You need to
calibrate the flow sensor again.
For details, refer to 3.6.4 Check the Accuracy of Flow Sensors.
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5.4.4 Connections and Measurement Problems of the
Pressure Sensors
The pressure sensor has one sampling line. Connection errors include:
 The sampling line is not connected.
 The sampling line is connected incorrectly.
By using the Diagnostic Tests tool, you can detect if the sampling lines are connected
correctly.
 To diagnose the sampling line connection of the pressure sensor:
 During normal ventilation, if a sampling line connection error occurs, it is easily
detected through the Paw waveform and technical alarms. If with the increase of
actual pressure, pressure waveform data decreases and the alarm of “Paw Too
Low” or “Patient Circuit Leak” occurs simultaneously, it is possible that the
sampling line of the airway pressure sensor is connected incorrectly.
 You can enter the [Diagnostic Tests] menu to set the PEEP safety valve to ON.
Gradually increase the D/A value of the PEEP valve and observe if the A/D value
of the PEEP pressure sensor also increases gradually. If not, it further indicates that
the PEEP pressure sensor may be connected incorrectly.
 To diagnose the sampling line connection of the pressure sensor in case of pressure
calibration failure:
1. Connect the tubes of the anesthesia machine just like 5.4.1.
2. Make sure to mount the water collection cup again
3. Make sure that gas supplies are within specifications. In the [Diagnostic Tests] menu,
set the PEEP safety valve to ON. Set the Insp. Valve at 5 L/min.
4. Increase the D/A value of the PEEP valve gradually and the sampling A/D value of the
pressure sensor should also increase due to the gradual increase of actual pressure,
 If the sampling A/D value of one pressure sensor decreases gradually, it is possible
that the sampling line of the pressure sensor is connected incorrectly.
 If the sampling A/D value of one pressuer sensor remains unchanged, it is possible
that the sampling line of the pressure sensor is not connected.
 The pressure of the airway pressure gauge should increase. If not, it is possible that
the airway pressure gauge is defective.。
5.

If sampling line connection errors are detected, re-connect the sampling lines and verify
proper connection of all lines.
To diagnose the measurement error of the flow sensors:
 With the gradual increase of actual pressure, the measured value of the pressure
sensor should also increase. Otherwise, the calibration data have errors. You need
to calibrate the pressure sensor again.
 Compared with the measured value of the standard pressure measurement device
(anesthesia machine calibration device), the measured value of the pressure sensor
should be accurate. Otherwise, the calibration data have errors. You need to
calibrate the pressure sensor again.
For details, refer to 3.6.5 Check the Accuracy of Pressure Sensors。
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5.4.5 Opening State Problems of the Inspiratory Valve
By using [Diagnostic Tests], you can detect if the opening state of the inspiratory valve is
correct.
1. The methods for tube connections and settings of the anesthesia machine are the same as
those for sampling line connections of the flow sensors. For details, refer to 5.4.1.
2. In the [Diagnostic Tests] menu, gradually increase the D/A value of the inspiratory
valve. If the measured values of the ventilator flow sensor, inspiratory flow sensor, and
expiratory flow sensor change very little and low gas flow is felt at the connector of
water collection cup, it indicates that the inspiratory valve or the D/A on the Ventilator
Control Board is defective.
3. Normally, when the D/A value of the inspiratory valve is set to “2500”, the flow
measured by the standard flow measurement device can reach 90 L/min.
4. If when the D/A value of the inspiratory valve is set to more than “4000”, the flow
measured by the standard flow measurement device fails to reach 90 L/min, flow
calibration will fail. In this case, you need to replace the expiratory valve assembly or
the ventilator control board.
5. To locate if the DA on the Ventilator Control Board is defective, you can use a
multimeter to measure the output of DA on the Ventilator Control Board corresponding
to the inspiratory valve. If voltage also increases with the increase of D/A value, and
voltage nears 6V when D/A value is set to more than “4000”, it indicates that the DA on
the Ventilator Control Board corresponding to the inspiratory valve may be correct.
6. After the expiratory valve assembly or the Ventilator Control Board is replaced, you can
use the similar method to check if the problem is fixed.
5.4.6 Opening State Problems of the PEEP Safety Valve
When the PEEP safety valve is permanently OFF and the gas supplies are within
specifications, the [Drive Gas Pressure Low] is alarmed.
By using Diagnostic Tests, you can detect if the opening states of the PEEP safety valve and
PEEP valve are correct.
 To diagnose the opening state of the PEEP safety valve:
1. Make sure that gas supplies are within specifications.
2. In the [Diagnostic Tests] menu, when the PEEP safety valve is switched on, a subtle
click is heard.
3. Adjust the D/A value of the PEEP valve to cause the pressure measured by the PEEP
pressure sensor to exceed 0 cmH2O.
4. Switch off the PEEP safety valve. The pressure measured by the PEEP pressure sensor
should drop to 0 cmH2O immediately. Switch on the PEEP safety valve again. The
measured value of the PEEP pressure sensor rapidly restores almost the same value to
that before PEEP safety valve is switched off. During this period, gas flow and also
change of gas flow when the PEEP safety valve is switched on or off can be felt at the
PEEP outlet, which helps to judge if the PEEP safety valve can be switched on or off
correctly.
5. If an error is detected, it is possible that the PEEP safety valve or the safety valve drive
voltage on the ventilator control board is defective. You can use a multimeter to measure
the drive signals on the ventilator control board corresponding to the PEEP safety valve
(measurement can be performed at the corresponding socket). When the PEEP safety
valve is turned on, the drive voltage should near 6V. When the PEEP safety valve is
turned off, the drive voltage should near 0V. If these two conditions are met
simultaneously, the ventilator control board is normal.
6. If the PEEP safety valve is defective, replace the expiratory valve assembly. After
replacement, you can use the similar method to check if the problem is fixed.
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5.4.7 Opening State Problems of the PEEP Valve
When the PEEP valve is defective, pressure related alarms occur in mechanical ventilation
modes.
By using Diagnostic Tests, you can detect if the opening states of the PEEP valve is correct.
 To diagnose the opening state of the PEEP valve:
1. Make sure that gas supplies are within specifications. In the [Diagnostic Tests] menu,
set the PEEP safety valve to ON.
2. With the increase of D/A value of the PEEP valve, the measured value of the PEEP
pressure sensor (or the anesthesia machine calibration device) should also rise. Note that
there is a non-response area for the PEEP valve when the D/A value is relatively small.
When the D/A value is less than this range, the PEEP valve cannot be opened and the
output is “0” continuously. When the D/A value is greater than this range, the pressure
output will increase with the increase of D/A value. This phenomenon also exists for the
inspiratory valve.
3. For subsequent diagnosis rules, refer to 5.4.5.
5.5 Hardware and Electrical Problems
Failure
description
Possible cause
Recommended action
When switch
ON, AC and
battery indicator
lamps are not lit,
the machine
cannot ventilate
and the screen is
not lit.
AC power supply is not connected and
the batty capacity is insufficient.
The breaker of AC input is tripped and
the battery capacity is insufficient.
The auxiliary
A/C electrical
outlet has no
voltage output.
The breaker of auxiliary outlet is tripped.
The anesthesia
machine cannot
be started.
The system switch is damaged.
The cable connected to the system switch
is disconnected or is not connected
reliably.
The power board failure results in no
power output of 15.2V, 3.3V, 5V, and
12V.
The power board software failure results
in no power output of 15.2V, 3.3V, 5V,
and 12V.
Check and make sure that the AC
power supply is connected properly.
Reset the breaker. If the problem
persists after breaker is reset, it
indicates the machine inside is shortcircuited.
Replace the fuse. If the problem
persists after the fuse is replaced, it
indicates the machine inside is shortcircuited.
Reset the breaker. If there is still no
voltage output, it indicates the load
equipment to which the auxiliary A/C
electrical outlet is connected is shorted
or overcurrent. Check if the load
equipment is normal and make sure
that its working current is within the
specified specification of auxiliary
outlet.
Replace the system switch.
Check and make sure that the cable is
reliably connected.
The fuse of power board is burned and
the battery capacity is insufficient.
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Replace the power board.
Update the power board software.
Failure
description
Possible cause
Recommended action
The screen of
anesthesia
machine cannot
be lit.
The cable connected to the inverter is
disconnected or is not connected reliably.
The inverter is damaged.
The power board failure causes power
output error.
The power board software failure causes
power output error.
The screen power supply fuse is burned
out, which results in no 3.3V output.
The main control board failure results in
no display output.
Check and make sure that the cable is
reliably connected.
Replace the inverter.
Replace the power board.
The power board failure causes instable
supply voltage of the display.
The time sequence of main control board
LVDS is abnormal.
Replace the power board.
The screen of
anesthesia
machine can be
lit, but without
any contents.
The screen of
anesthesia
machine can be
lit and shows
contents, but the
screen flashes.
The heater is
ineffective.
The touchscreen
is ineffective.
During the
operation of the
anesthesia
machine,
ventilation stops
all of a
sudden but the
display and
buttons work
normally.
Exiting Standby
fails.
Alarm messages
are displayed on
the screen but
without alarm
sound.
Update the power board software.
Replace the fuse.
Replace the main control board.
Update the software of main control
board. If the screen continues flashing,
replace the main control board.
The heating drive circuit of the power
board is faulty.
The heater is damaged.
The internal sensor of heater is
ineffective.
The cable connected to the heater is
disconnected or is not connected reliably.
The touchscreen is damaged.
The touchscreen control board is
damaged.
The cable connected to the touchscreen or
touchscreen control board is disconnected
or is not connected reliably.
The monitoring module or valve is
damaged.
Check and make sure that the cable is
connected reliably.
Replace the touchscreen.
Replace the touchscreen control board
The monitoring module selftest is failed.
Replace the monitoring module.
The speaker is damaged.
The speaker cable is not connected
reliably.
Replace the speaker.
Check and make sure that the cable is
connected reliably.
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Replace the power board.
Replace the heater.
Check and make sure that the cable is
connected reliably.
Select [Main] → [Service] →
[Diagnostic] → [Valves] Test the
status
of each valve and reference power
supply in the valves-test tool
window. If valve malfunction or
reference power supply error is
detected, replace the monitoring
module.
Failure
description
Possible cause
Recommended action
Network
connection is
failed.
The network cable is disconnected or is
not connected reliably.
The network cable is too long.
Check and make sure that the network
cable is connected reliably.
Shorten the network cable.
Recommended cable length is
approximately 1.5 m.
The network cable has two linear
orderings. Make sure that network
cable with correct linear ordering is
used.
Check the screen to see if the
anesthesia machine is in mechanical
ventilation mode and if there is an
alarm triggered.
1. Set tidal volume to maximum.
2. Switch between standby and
mechanical statuses or between
manual and mechanical statuses
repeatedly.
3. Replace the pneumatic block.
The network cable is used incorrectly.
No gas is
outputted
through
the valve in
mechanical
ventilation mode.
The Auto/Manual switch is
damaged.
The valve cannot be
opened.
5.6 Software Upgrade and Software Function
Activation
5.6.1 1.6.1 Software Upgrade
NOTE: Update the software when replacing the main control board, monitoring module,
power board or electronic flowmeter board.
NOTE: Read the update package accompanying document before updating A series.
1. Connect the Ethernet port of the PC to the Ethernet port of the A5 using the Ethernet
crossover cable.
2. Before running the Mindray anesthesia machine and ventilator software upgrade tool,
verify that the IP address of the PC is set to 192.168.23.1., and the subnet mask is set to
255.255.255.0. Check and set the IP address on the PC by following these instructions.
(1). Ensure that the IP address of PC and the anaesthesia machine network falls within the
same network segment. For example, if the IP address of the PC is 192.168.23.1, the IP
address of the anaesthesia machine should be 192.168.23.xxx.
(2) On the PC, click Start, Control Panel and then Network Connections.
(3).Right-click Local Area Connection and then left click Properties.
(4).Scroll down to Internet Protocol (TCP/IP), click to Internet Protocol (TCP/IP and then
click Properties.
(5). Click the radio button for "Use the following IP address". Set the IP address and Subnet
mask and then click OK.
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3.
Make sure that the software upgrade tool in the software package has been installed to
the PC. If it has not been installed then follow these steps:
(1) Run the SystemUpdateTool.exe file.
(2). When prompted to setup a language select “English” and then select “OK”.
(3). When the Welcome dialog window is displayed select “Next”.
(4). When the Customer Information dialog window is displayed enter the following:
(5). User Name: Mindray
(6). Company Name: Mindray
(7). Serial Number: 26582640
(8). Select “Next”.
(9). When the Destination Location dialog window is displayed select “Next” to accept
the default Destination Folders.
(10). When the Select Program Folders dialog window is displayed select “Next” to
accept the default Program Folder.
(11) When the Install Shield Wizard dialog window is displayed select “Finish” to
complete the installation.
4. Upgrade Software:
(1) From the Desktop, run the icon for Mindray anesthesia machine and ventilator
software upgrade tool. When the “Select Product Series” dialog is displayed select A
Series(Non-FDA) followed by OK. Once the system update tool starts to work perform
the following to update the software.
(2). Select “Select Package” from the top tool bar.
(3). When the “Select Package” dialog is displayed, select “>>>”
(4). When the “Open dialog” is displayed, select the directory where the software
package is located for viewing the details. Select the software “01_BIOS
V01.16.00.00.pkg”.
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Item
1
2
3
Software
Upgraded Package
BIOS(01.16.00.00)
Bundle
（V02.16.00）
Power（V1.7）
Modules Included
Version
Guide program
United version number
V01.16.00.00
V02.16.00
System program
V03.16.00
FPGA display program
FPGA voice program
Aux monitor module
software
Monitor module software
Language
Electronic flowmeter
software
Power supply card
V1.4
V1.5
V01.02.00
V01.04.00
V4.6
V1.10
V1.7
Note: This is only an example of latest software version in the form above. Check for
Technical bulletins to find the correct table for the software version you are installing.
Note: Perform upgrade in accordance with the sequence numbers in the software package.
Note: In the software package 02.16.00 and later versions, BIOS is displayed and upgraded
independently.
(5). Select “Open”.
(6) A dialog box will be displayed. Click OK.(7)
Click “Start(Single)” on the Mindray
anesthesia machine and ventilator software upgrade tool.
(8) Turn off the A5 and then turn it on.
(9) You will see that the PC network icon indicates that it is connected. The anesthesia
machine displays the upgrade screen.
Note: If the screen as shown above is not displayed after turning on the equipment, and the
equipment starts up normally and enters system check, please check the IP setting and
network cable.
(10). While updating the software the A5 will show text which explains the progress of the
software update.
(11). When upgrade is completed, the anesthesia machine will display “Upgrade Completed!”
and Mindray anesthesia machine and ventilator software upgrade tool will display
“update system successfully”.
(12). Repeat the steps 3 through 11 to update the "02_A5 Bundle_V02.16.00.mpkg" and
"03_Power V1.7.pkg" software.
Note: The power board software upgrade usually fails the first time but succeeds the second
time.
(13). When the software “03_Power V1.7.pkg” is upgraded turn off the A5 unit and then
restart it.
Note: If the equipment fails to start up normally after completing upgrade, please find the
corresponding guide document in the upgrade package and operate by following the
instructions.
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(14). Select Main (hot key) > Service > enter the service password "789789" > System Info,
you can check the Bundle Version Number on the Service screen. Verify that the Bundle
Version Number on the software keeps accordance with that of the Bundle.
5.6.2 Software Function Activation
The manufacturer can activate and upgrade the following functions. If you need to activate a
function, buy the corresponding activation code from the manufacturer.
Configuration Item Supporting
Function Description
Activation
SIMV-VG
Synchronous intermittent instructionbased ventilation – pressure adjustment
and volume control
PS
Pressure-supported ventilation mode
CPAS/PS
Pressure-supported ventilation/Continual
recording of positive pressure ventilation
Recruitment
Lung recruitment
AA Calculation
Anesthesia calculation
5.6.2.1 Apply for a Software Function Activation Code
Note: When applying for an activation code, provide the following information about the
anesthesia machine whose configurations will be activated: machine ID, existing
configurations, and configurations to be activated.
When you need to add the preceding billed function configurations, apply from our
company's user service department for a software function configuration activation code. The
application procedure is as follows:
1.
2.
3.
4.
Record the sequence number of the anesthesia machine whose configurations will be
activated (see the label on the left side of the machine).
Do the following to record the ID and existing configurations of the anesthesia machine:
Choose Main (hot key) > System >> > Configuration Info >> to open the
Configuration Information menu.
Record the configurations to be activated.
Send the preceding records to our company's user service department to apply for an
activation code.
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5.6.2.2 Software Function Activation Process
Note: Before activation, check and record the existing function configurations and those to
be activated.
Note: During activation, ensure that the input activation code is consistent with that provided
by the manufacturer; otherwise, activation will fail.
Take the following steps to activate software function configurations:
1 Open the Function Activation menu, and choose Main (hot key) > Service (enter the
correct password) > Factory Setup> Activate Functions, as shown in the following
figure.
2.
Input the correct activation code in the Activation Code dialog box.
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3.
4.
Configuration activation: Click Activate. If the input activation code is correct, the
system displays the message "Activation completed. Restart the machine for the
activated configurations to take effect." below the activation code input box.
Click Accept and restart the anesthesia machine so that the activated configurations take
effect.
Note: Maintain the anesthesia machine in the powered-on state before activation is complete
or an error is returned; otherwise, the BIOS program of the main control board of the
anesthesia machine will be corrupted.
Note: When the system indicates that activation is successful, restart the anesthesia machine
to make the activated configurations take effect.
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FOR YOUR NOTES
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6 Repair and Disassembly
6.1 Prepare for Disassembly
6.1.1 Tools
During parts disassembly and replacement, the following tools may be required:
 Metric Allen wrench (1.5, 2, 2.5, 3, 4, 5, 6, 8, 10mm)
 Phillips screwdriver(#1 and #2)
 Diagonal pliers
 Flathead screwdriver
 Metric M3 and M4 socket screwdriver
 Adjustable wrench
 Tweezers
 Krytox lubricant (P/N:099-000107-00)
6.1.2 Preparations
Before disassembly,
 Make sure that the anesthesia machine is turned off and disconnected from the AC
power source.
 Bleed down the gas pressure inside the anesthesia machine as described below.
 Disconnect all pipeline and cylinder gas supplies.
 Prepare the tools required for disassembly.
 Maneuver the anesthesia machine to an appropriate location and then apply the brake.
CAUTION: The internal parts may be contaminated. Wear special gloves during disassembly
and inspection.
6.1.3 Bleed Gas Pressure
Make sure to bleed down the gas pressure inside the anesthesia machine before disassembling
pneumatic fittings to avoid personal injury or equipment damage. To bleed gas pressure:
1. Close other cylinder valves and disconnect pipeline gas supplies. Do not disconnect the
O2 pipeline. If O2 pipeline is not available, connect O2 cylinder and open the O2
cylinder valve.
2. Set the system switch to ON.
3. Turn on all the flow controls (except O2).
4. Make sure that N2O and AIR pipeline pressure gauges read zero.
5. Disconnect the O2 pipeline supply (or close the O2 cylinder valve). Push the O2 flush
button to bleed O2 from the system.
6. Set the system switch to OFF.
6-1
6.2 Disassemble the Assemblies
6.2.1 Disassemble the Internal Assemblies of the Machine
Upper Half
6.2.1.1 Open the Service Door
Turn the two screws on the service door counter-clockwise for a half turn to open the door.
6.2.1.2 Remove the Gas Supply Inlet Assembly
1.
2.
3.
4.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Disconnect the tubes from the N2O, AIR and O2 supply inlet assemblies.
Remove the two screws from the N2O and AIR supply inlet assemblies.
Remove the related cables from O2 supply inlet assembly and Remove the two screws
to remove the assembly.
6-2
6.2.1.3 Remove the Pressure Regulator Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the pressure regulator assembly.
Remove the three screws on the pressure regulator assembly and remove the assembly.
6.2.1.4 Remove the Electronic Flowmeter Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the related cables and tubes from the electronic flowmeter.
Remove the four screws and remove the electronic flowmeter.
Machine before ECL128 takes effect
Machine after ECL128 takes effect
6-3
6.2.1.5 Remove the Poppet Valve Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the poppet valve assembly.
Remove the two screws on the pressure regulator supporting plate to remove the poppet
valve. (Machine before ECL128 takes effect)
4. Unfasten the four screws to remove the poppet valve assembly. (Machine after ECL128
takes effect)
6.2.1.6 Remove the Gas Mixer Assembly (the machine has an
independent gas mixer assembly before ECL128 takes effect)
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the gas mixer assembly and the poppet valve.
Remove the four screws on the gas mixer assembly to remove the gas mixer assembly
and the poppet valve assembly.
6-4
4. Remove the two screws on the pressure regulator supporting plate to remove the gas
mixer assembly.
6.2.1.7 Remove the ORC Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the ORC assembly.
Remove the two screws on the ORC assembly to remove the assembly.
6.2.1.8 Remove the Back Pressure Valve Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the back pressure valve assembly.
Remove the four screws on the back pressure valve assembly to remove the assembly.
6-5
6.2.1.9 Replace the Lithium-ion Battery
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the two screws on the battery box cover and then take out the lithium-ion
battery.
Place the new lithium-ion battery into the battery box in the original direction to
complete battery replacement.
6.2.1.10 Remove the Vaporizer Manifold Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the vaporizer manifold assembly.
Remove the four screws and remove the vaporizer manifold assembly.
6-6
6.2.1.11 Remove the Pneumatic Resistor Block Assembly (For the
Anesthesia System Released Before ECL115)
1.
2.
3.
Open the service door. Refer to 6.2.1.1 Open the Service Door.
Remove the tubes from the pneumatic resistor block assembly.
Remove the two screws and remove the pneumatic resistor block assembly.
6.2.2 Disassemble Hardware Box Assembly
6.2.2.1 Remove the Top Plate Assembly
1.
Fully loosen the 3 captive screws fixing the top plate assembly to remove the assembly.
2.
Lift the top plate to remove it.
6-7
6.2.2.2 Remove the Main Control Board
NOTE: To replace the main control board, you may need to re-install the software.
NOTE: Before the replacement of the main control board, please record the settings of the
service menu. After the replacement of the main control board, please restore the settings of
the service menu.
1. Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
2. Remove the three screws fixing the main control board to remove the board.
6.2.2.3 Remove the Monitoring Module
NOTE: To replace the monitoring module, you may need to re-install the software.
1. Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
2. Remove the related cables and tubes from the monitoring module.
3.
Remove the four screws fixing the monitoring module to remove the module.
6-8
4.
Refer to 1.2.3Connections between Pneumatic Circuit, Breathing System and
Ventilator Control Board for tube connections between the pneumatic circuit, breathing
system, and modules.
6.2.2.4 Remove the Power Board
1.
2.
Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
Remove the two screws fixing the high-voltage protective cover to remove the
protective cover.
3.
Remove the filter cable connector. Remove the screw on the power board supporting
sheet, the three screws and one nut fixing the power board to remove the power board.
4. Remove the screw on the power board supporting sheet to remove the supporting sheet.
6-9
6.2.2.5 Remove the Motherboard
1.
2.
Open the service door. Refer to 6.2.2.1 Remove the Top Plate Assembly.
Remove the three cables from the motherboard.
3. Remove the four stud bolts on the two front sockets.
4. Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
5. Remove the two screws fixing the main control board output frame and one screw fixing
the main control board to remove the main control board together with the sheet metal
parts.
6. Remove the power board. Refer to 6.2.2.4 Remove the Power Board.
6-10
7. Remove the three screws to remove the air deflector plate.
8. Remove the power board insulation overlay.
9. Remove the cables from the motherboard.
10. Loosen the two screws on the motherboard output bracket and Remove the 12 screws
fixing the motherboard to remove the motherboard.
6-11
6.2.2.6 Remove the Three-Way Valve Assembly
1.
2.
Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
Remove the related tubes and cables from the three-way valve assembly.
3.
Remove the three screws on the three-way valve assembly to remove the assembly.
Please refer to 1.2.3 Connections between Pneumatic Circuit, Breathing System and
Ventilator Control Board.
6.2.2.7 Remove the Speaker
1.
2.
3.
Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
Remove the speaker cable.
Remove the two screws to remove the speaker.
6-12
6.2.2.8 Remove the Hardware Box Rear Cover Plate Assembly
1.
2.
Remove the top plate assembly. Refer to 6.2.2.1 Remove the Top Plate Assembly.
Open the service door. Refer to 6.2.1.1 Open the Service Door. Remove the cables and
tubes from the hardware box assembly.
3.
Remove the three screws fixing the power plug retaining clip to remove the power board
and the power plug retaining clip.
4.
Remove the two screws fixing the high-voltage protective cover to remove the
protective cover.
6-13
5.
Remove the 7 screws fixing the hardware box assembly and lift the hardware box
assembly to remove it.
6.
7.
Remove the AC filer and fan cables.
Remove the 11 screws on the hardware box rear cover plate assembly to remove the
assembly.
6.2.2.9 Remove the Fan
1.
2.
Remove the hardware box rear cover plate assembly.
Remove the four screws on the fan to remove the fan.
6-14
6.2.2.10 Remove the Filter
1.
2.
Remove the hardware box rear cover plate assembly.
Remove the four screws and the nut on the filter to remove the filter.
6-15
6.2.2.11 Remove the Auxiliary Electrical Outlet
1.
2.
Remove the hardware box rear cover plate assembly.
Remove the cables from the auxiliary electrical outlets and remove the auxiliary
electrical outlets. A5 has four auxiliary electrical outlets, as shown below.
6.2.2.12 Remove the Breaker Assembly
1.
2.
Remove the hardware box rear cover plate assembly.
Remove the breaker nuts to remove the breakers. A5 has five breakers, as shown below.
6-16
6.2.3 Disassemble the Work Surface
6.2.3.1 Remove the Drawer Assembly
1.
2.
Pull out the drawer until the black locking piece on the rail can be seen.
Depress the locking piece on the right rail of drawer, and lift the locking piece on the
left rail at the same time.
3.
Take out the drawer.
6-17
6.2.3.2 Remove the Work Surface Cover Plate Assembly
1.
2.
Remove the first drawer.
Fully loosen the five captive screws fixing the work surface cover plate assembly.
3.
Lift off the work surface cover plate assembly from the work surface. When the work
surface cover plate assembly is removed, the internal structure of the work surface is as
shown below.
6-18
6.2.3.3 Remove the Work Surface Front Panel Supporting Plate
1.
2.
Remove the work surface cover plate assembly.
Remove the 8 screws on the work surface front panel supporting plate to remove the
front panel supporting plate.
6.2.3.4 Remove the Rear Cover Plate Assembly
1.
Remove the knob on the cylinder yoke assembly (only applicable to configuration with
high-pressure cylinder yoke assembly).
2.
3.
Remove the AGSS transfer tube connecting to the exhaust tube and refer to 6.2.10.
Remove the 6 screws on the cart rear cover plate assembly to remove the assembly (the
picture on the right shows the configuration with high-pressure cylinder yoke assembly).
6-19
3.
Remove the four screws on the main unit rear cover plate to remove the main unit rear
cover plate (the picture on the right shows the configuration with high-pressure cylinder
yoke assembly).
6.2.3.5 Remove the Expiratory Valve Assembly
1.
2.
Remove the work surface cover plate assembly.
Remove the tubes and cables from the expiratory valve assembly.
3.
Remove the pressure switch cable. Remove the switch jacket before Removing the cable
to avoid damaging the cable.
Switch jacket
6-20
4.
Remove the four screws on the expiratory valve assembly to remove the assembly.
6.2.3.6 Remove the O2 Flush Assembly
1.
2.
3.
4.
Remove the work surface cover plate assembly. Refer to 6.2.3.2.
Remove the work surface front panel supporting plate. Refer to 6.2.3.3.
Remove the tubes from the O2 flush assembly.
Remove the two screws on the bracket and remove it.
5.
6.
Remove the metal post on the right side of the O2 flush assembly.
Remove the four screws around the O2 flush assembly to remove the assembly.
6-21
6.2.3.7 Remove the Touchpad Assembly
1.
2.
3.
4.
Remove the work surface cover plate assembly. Refer to 6.2.3.2.
Remove the work surface front panel supporting plate. Refer to 6.2.3.3.
Remove the data line of the Touchpad assembly.
Remove the 8 screws on the Touchpad to remove the Touchpad bracket and Touchpad
assembly.
6.2.3.8 Remove the ACGO Assembly
1.
2.
2.
3.
Remove the work surface cover plate assembly. Refer to 6.2.3.2.
Remove the work surface front panel supporting plate. Refer to 6.2.3.3.
Remove the tubes and cable from the ACGO assembly.
Remove the 7 screws on the Touchpad bracket and ACGO assembly to remove the
Touchpad bracket and ACGO assembly.
6.2.3.9 Remove the Cylinder Yoke Assembly (only applicable to
configuration with cylinder yoke assembly)
1.
2.
3.
Open the service door and refer to 6.2.1.1.
Remove the rear cover plate and refer to 6.2.3.4.
Remove the Module Rack Box Assembly and refer to 6.2.5 (if configured with
module rack box）.
Remove the Module Rack Fan and refer to 6.2.6 (if configured with module rack
box).
5. Remove the tubes on the cylinder yoke assembly.
6. Fully loosen the brass nut on the cylinder yoke assembly.
4.
6-22
7.
Remove the four screws on the cylinder yoke mounting plate to remove the assembly.
8.
Remove the four screws on the cylinder yoke to remove the O2, N2O, and Air cylinder
yoke assemblies respectively.
The following picture shows the cylinder yoke assemblies before the ECL 112 changes.
The following picture shows the cylinder yoke assemblies after the ECL 112 changes.
6-23
6.2.3.10 Remove and Limit the Spring tube Assembly
1. Remove the work surface cover plate assembly. For details, see section 6.2.3.2 "Remove
the Work Surface Cover Plate Assembly".
2. Remove the circuit arm cover. For details, see section 6.2.9 "Remove the Circuit Arm
Cover".
3. Cut the ties binding the spring tube and disconnect the tube from the connector at the #2
end to remove the spring tube assembly.
6.2.4 Disassemble the Display Assembly
1.
2.
Open the service door. Refer to 6.2.1.1.
Remove the display connection line from the hardware box and the tubes from the
needle valve assembly. Fully loosen the four captive screws to remove the display
assembly.
6-24
6.2.4.1 Remove the Alarm Lamp Board
1.
2.
3.
Remove the display assembly. Refer to 6.2.4.
Remove the cables from the alarm lamp board.
Remove the two screws on the alarm lamp board to remove the board.
6-25
6.2.4.2 Remove the Display Adapter Board
1.
2.
Remove the display assembly. Refer to 6.2.4.
Remove the five screws on the cover plate of display adapter board.
3.
4.
Remove the cables from the display adapter board.
Remove the four screws on the display adapter board and remove the board.
6.2.4.3 Remove the Touch Screen Control Board
1.
2.
Remove the display assembly. Refer to 6.2.4.
Remove the four screws on the cover plate of the touch screen control board to remove
the cover plate.
6-26
3.
4.
Remove the cables from the touch screen control board.
Remove the two screws on the touch screen control board to remove the board.
6.2.4.4 Remove the Backlight Inverter Board
1.
2.
Remove the display assembly. Refer to 6.2.4.
Remove the four screws on the cover plate of the backlight inverter board to remove the
cover plate.
3.
4.
Remove the cables from the backlight inverter board.
Remove the two screws on the backlight inverter board to remove the board.
6-27
6.2.4.5 Remove the Needle Valve Assembly
1.
2.
Remove the display assembly. Refer to 6.2.4.
Remove the two hexagon set screws on the needle valve knob to remove the knob.
3.
Remove the two screws on the needle valve assembly to remove the assembly.
6.2.4.6 Remove the Touch Screen
1.
2.
Remove the display assembly. Refer to 6.2.4.
Remove the four screws on the cover plate of the touch screen control board to remove
the cover plate.
6-28
3.
Remove the cables from the touch screen control board.
4.
Remove the 11 screws around the display backplane to remove the backplane.
6-29
5.
Slightly lift the touch screen off the display front cover to remove the touch screen.
6.2.4.7 Remove the Display Replacement Package
1.
2.
Remove the touch screen.
After removing the above mentioned components from the display assembly, the
remaining part is the display replacement package.
6.2.5 Remove the Module Rack Box Assembly
1.
2.
3.
Open the service door. Refer to 6.2.1.1.
Remove the rear cover plate assembly. Refer to 6.2.3.4.
Remove the cables from the module rack box assembly.
6-30
4.
Remove the four screws to remove the module rack box assembly.
5.
6.
Remove the module rack fan cable.
Remove the four screws to remove the module rack assembly.
6.2.6 Remove the Module Rack Fan
1.
2.
3.
Remove the module rack box assembly. Refer to 6.2.5.
Remove the module rack fan cable.
Remove the four screws to remove the module rack assembly.
4.
Remove the two screws to remove the fan together with the bracket.
6-31
5.
Remove the four screws to remove the module rack fan.
6.2.7 Remove the Instrument Panel Assembly
1.
2.
3.
3.
4.
Open the service door. Refer to 6.2.1.1.
Remove the rear cover plate assembly. Refer to 6.2.3.4.
Remove the module rack box assembly. Refer to 6.2.5.
Remove the related tubes from the gas supply pressure gauge, system switch assembly,
and total flowmeter assembly.
Remove the three copper pipes on the high pressure gauge from the cylinder yoke
assembly. Refer to 6.2.3.9。
6-32
5.
Remove the four screws on the pressure gauge panel to remove the panel.
6.2.7.1 Remove the Pressure Gauge
1.
2.
Remove the instrument panel assembly.
Remove the two screws on the pressure gauge to remove the gas supply pressure gauge
and high pressure gauge.
6-33
3.
If it is necessary to replace the pressure gauge cover, take out the white gasket from the
pressure gauge cover. Remove the pressure gauge cover from the instrument panel.
Before replacement, clean up the residual self-adhesive from the instrument panel.
White gasket inside the
pressure gauge cover
6.2.7.2 Remove the Total Flowmeter
1.
2.
Remove the instrument panel assembly.
Remove the four screws on the total flowmeter and to remove the total flowmeter.
6.2.7.3 Remove the System Switch Assembly
1.
2.
Remove the instrument panel assembly.
Remove the four screws on the system switch to remove the switch.
6-34
6.2.7.4 Remove the Indicator Light Board
1.
2.
Remove the instrument panel assembly.
Remove the two screws on the indicator light board to remove the
board.
6.2.8 Remove the Auxiliary Gas Supply Assembly
1.
2.
3.
Open the service door and refer to 6.2.1.1.
Remove the related tubes from the auxiliary gas supply assembly.
Remove the two screws on the auxiliary gas supply assembly. Pull the auxiliary gas
supply assembly to the side for some distance. Remove the internal cables to remove
this assembly.
6-35
6.2.9 Remove the Circuit Arm Cover
1.
2.
3.
Remove the work surface cover plate assembly and refer to 6.2.3.2.
Remove the breathing system assembly on the circuit arm cover.
Remove the four screws. Lift the circuit arm cover, remove the internal cables, and
remove the circuit arm cover.
6.2.10 Remove the AGSS Assembly
1.
2.
Remove the transfer tube from the AGSS assembly.
Loosen the AGSS groove locking knob on the AGSS assembly. Lift the AGSS assembly
along the fixing slider to remove the assembly.
6-36
6.2.11 Remove the Built-in AG Module (when configured with
AG module)
1.
Remove the 6 screws to remove the cart rear cover plate assembly.
2.
Remove the four screws to remove the AG module together with sheet-metal bracket.
3.
Remove the four screws to remove the AG module
6-37
6.2.12 Remove the AG Module Inlet Tube Assembly (when
configured with AG module)
1.
2.
3.
Open the service door. Refer to 6.2.1.1.
Remove the rear cover plate assembly. Refer to 6.2.3.4.
Remove the AG module and two-way connector from the tubes
4.
Remove the two screws to remove the AG module inlet tube assembly.
5.
Cut the cable strap fixing the filter. Remove the filter after pulling out the tube
connecting the filter.
6-38
6.2.13 Disassemble the Base Assembly
6.2.13.1 Remove the Caster Assembly (The Old base assembly: Four
casters are locked synchronously at the brake status)
1.
Remove the breathing system and tilt the machine backward.
2.
Remove the five screws and remove the caster assembly.
6-39
6.2.13.2 Remove the casters (New base assemblies: three casters are
locked and another one can rotate freely at the brake status.)
1. Remove the drawer assemblies according to 6.2.3.1 part.
2. Disassemble the rear panel referring to the third step of 6.2.3.4 part and remove the real
board of the cart.
3. Loose the ten screws fixed at two sides of the cart and carry the whole top part down.
4 Loose the four screws fixed at the base board and remove the base cover.
6-40
5 Loose the two screws used for fixing the decoration board at the sides of base.
6. Turn over the base assembly, loose the four screws used for fixing the two sides
decoration board at the base and remove the decoration board.
7. According to the replacement of the castors, loose the screws used for fixing the front
and rear housing of the base and remove the front and rear housing.
6-41
8. Loose the two screws used for fixing the ram and remove the ram.
9. Loose the two screws used for fixing the installation board of castors shaft and remove
the installation board and the drive shaft.
10. Loose the two screws used for fixing the castors and remove the castors.
6-42
6.2.13.3 Disassemble the front and rear housing of the base and the
decoration board.
Refer to the step 1 to 7 of 6.2.13.2 part.
6.2.13.4 Remove the Brake Indicator Drive Plate I and II
1.
2.
Tilt the machine backward.
Remove the two screws on the brake indicator drive plate I to remove the plate.
3.
Remove the screw on the brake indicator drive plate II to remove the plate.
6.2.13.5 Remove the Brake Assembly
1.
2.
Tilt the machine backward.
Remove the 6 screws on the brake assembly to remove the assembly.
6-43
6.2.13.6 Remove the Brake Spindle
1.
2.
3.
Tilt the machine backward.
Remove the brake assembly
Remove the 6 screws and remove the brake spindle. (10 screws are needed to be
removed for the new base assemblies)
6.2.13.7 Remove the Brake Linkage
1.
2.
3.
Tilt the machine backward.
Remove the brake indicator drive plate II.
Remove the three screws on the brake linkage and remove the brake linkage.
6.3 Disassemble the Breathing System
6.3.1 Remove the O2 Sensor and O2 Cell Unit
1.
Remove one end of the O2 cell unit from the circuit arm cover connection. Pull out the
O2 cell unit from the
port on the breathing system directly.
6-44
2.
Rotate the O2 cell shell counter-clockwise to take it out from the O2 cell cable. Then
rotate the O2 sensor counter-clockwise to take it out from the O2 cell shell.
6.3.2 Remove the Breathing Tubes
NOTE: When disassembling the breathing tube, hold the tube connectors at both ends of the
tube to avoid damaging the tube.
1. Remove the filter from the Y piece.
2.
Disconnect the breathing tubes from the inspiratory/expiratory connectors on the circuit.
6-45
6.3.3 Remove the Flow Sensor
1.
Rotate the rotary cover of the breathing connector counter-clockwise.
2.
Pull out the breathing connector together with the rotary cover. Then pull out the flow
sensor horizontally.
3.
The following pictures show the appearance of inspiratory flow sensor assembly and
expiratory flow sensor assembly.
Inspiratory flow
sensor assembly
Expiratory flow sensor
assembly
6-46
6.3.4 Remove the Manual Bag
Remove the manual bag from the bag arm assembly, as shown below.
6.3.5 Remove the Absorber Canister Assembly
1.
Hold and turn the rotary handle clockwise for 90 degrees.
2.
Take out the absorber canister assembly horizontally.
6-47
If it is necessary to replace or re-install the Pre-pak absorber sealing cushion (049000143-00), set the internal groove of the Pre-pak absorber sealing cushion in the side
flange of the Pre-pak absorber, as shown below.
Side flange of
the Pre-pak
absorber
Flat surface of the sealing
cushion faces upward.
Make sure that the sealing cushion is correctly installed. The comparison between
correct installation and incorrect installation is shown below.
Correct
installation
Incorrect
installation
WARNING: Sodalime is a caustic substance and is a strong irritant to eyes, skin and
respiratory system. Affected areas should be flushed with water. If irritation continues after
flushing with water, seek medical assistance immediately.
6-48
6.3.6 Remove the CO2 Bypass Assembly
1.
2.
Remove the absorber canister assembly. Refer to 6.3.5.
Press inward the fasteners on both sides and pull downward to remove the upper half of
the CO2 bypass assembly. Then raise the chassis to remove the entire CO2 bypass
assembly.
If it is necessary to replace or re-install the bypass trigger plate sealing cushion (049000142-00), pay attention to the matching between the interior convex rib of the bypass
trigger plate sealing cushion and the groove of the bypass trigger plate when assembling
the bypass trigger plate sealing cushion onto the bypass trigger plate, as shown below.
Groove of the trigger
plate
bypass trigger plate
sealing cushion
Make sure that the sealing cushion is correctly installed. The comparison between
correct installation and incorrect installation is shown below.
Correct
installation
Incorrect
installation
6-49
6.3.7 Remove the Circuit Main Body Assembly
1. Refer to 6.3.6to remove the CO2 bypass assembly.
2. Pull out the circuit main body assembly from the circuit adapter block assembly.
6.3.8 Remove the Bellows Assembly
1.
Turn the bellows housing counter-clockwise and lift off to remove it.
2.
Remove the bellows from the bellows base.
6-50
6.3.9 Remove the Pop-off Valve Assembly
1.
2.
Refer to 6.3.8to remove the bellows assembly.
Remove the four locking screws to remove the Pop-off cover plate assembly.
3.
Remove the Pop-off valve assembly.
6.3.10 Remove the Expiratory/Inspiratory Check Valve
Assembly
1.
Turn the valve cover clockwise to remove it.
6-51
2. Take out the check valve, as shown below.
6.3.11 Remove the Water Collection Cup
1.
Turn the water collection cup clockwise to remove the cup.
2.
The removed water collection cup is as shown below.
6-52
6.3.12 Remove the Airway Pressure Gauge
Lift the airway pressure gauge straight up to remove it
6.3.13 Remove the Bag Arm Assembly
1.
Turn the locking nut counter-clockwise and pull it out vertically.
2.
Lift straight up to remove the bag arm assembly.
6-53
6.3.14 Remove the Upper Rear Cover Assembly and Lower
Rear Cover Assembly
1.
2.
Refer to 6.3.1,6.3.2,6.3.3,6.3.4,6.3.5,6.3.6,6.3.7,6.3.8,6.3.11,6.3.12, 6.3.13 to remove the
O2 sensor, breathing tubes, manual bag, absorber canister assembly, CO2 bypass
assembly, circuit main body assembly, bellows assembly, water collection cup, airway
pressure gauge, and bar arm assembly.
Fully loosen the 6 screws, as shown below.
3.
Fully loosen the hand screws on the upper cover, as shown below.
4.
Turn over the circuit main body. Pull upward to remove the upper rear cover assembly.
6-54
5.
Pull left to remove the lower rear cover assembly.
6.3.15 Remove the Upper Front Cover Assembly, Median Plate
Assembly, and Lower Front Cover Assembly
1.
2.
Refer to 6.3.14to remove the upper rear cover assembly and lower rear cover assembly.
Remove the two screws on the lower rear cover.
3.
Fully loosen the 6 screw on the upper cover.
6-55
4.
Fully loosen the captive screws on the upper cover.
5.
Tightly hold the upper cover assembly and pull it upward to remove.
7.
Pull the median plate assembly upward to remove it.
Median plate assembly
Lower cover assembly
6-56
6.3.16 Remove the Auto/Manual Switch Assembly
1.
2.
Refer to 6.3.15 to remove the upper cover assembly.
Turn over the upper cover assembly and remove the three screws to remove the
Auto/Manual switch assembly, as shown below.
3.
Remove the three screws to remove the Auto/Manual switch bracket, as shown below.
4. Remove the O-ring. Pull out the connection shaft to pull out the Auto/Manual switch axis.
Remove the O-ring and pull
out the connection shaft.
Auto/Manual switch axis
Auto/Manual switch axis compress spring
6-57
5.
Remove the Auto/Manual switch compress spring to replace the two sealing rings.
Sealing ring
6.3.17 Remove the APL Valve Assembly
Turn the locking nut counter-clockwise and pull out the APL valve assembly vertically.
6-58
7 Replacement Parts
7.1 Introduction
The A5 anesthesia system can be divided into 18 parts according to its structure and functions.
Each part contains several replaceable parts. Table 8-1 through Table 8-18 provide the
information about the replaceable parts and Diagram 8-1 through Diagram 8-14 give the
positions of replaceable parts. When selecting replaceable parts, consideration should be
given to the characteristics of the parts, cost of replacement, and maintenance efficiency.
When the parts whose sub components are not convenient to replace (such as the electrical
component on the board) are faulty, replacing the board can improve the maintenance
efficiency. For example, if a pressure gauge on the instrument panel is faulty, replacing the
pressure gauge can reduce the cost.
7.2 Ordering Replaceable Parts
Provide the following information to order replaceable parts:
FRU code of the parts
Number of the parts in the document table
Description of the characteristics of the parts
For example: P/N: 801-0631-00001-00
Auxiliary gas supply, No.1
7-1
7.3 Diagrams and Tables
7.3.1 A5 Structure
20
19
1
18
2
3
13
4
12
5
11
6
10
9
7
8
7a
7-2
No.
1
2
3
4
5
6
7
7a
8
9
10
11
12
13
18
19
20
Description
P/N
Auxiliary gas supply assembly (American standard)
service parts
115-034401-00
Auxiliary gas supply assembly (Europe standard)
service parts
Breathing system
CO2 bypass assembly
O2 supply pressure gauge assembly
N2O supply pressure gauge assembly
Air supply pressure gauge assembly
Spare maintenance kit of drawer assembly
Drawer handle
Drawer key
Total flowmeter
The pressure gauge assembly of O2 high pressure
The pressure gauge assembly of N2O high pressure
The pressure gauge assembly of Air high pressure
System switch knob
Backup vaporizer manifold
Vaporizer manifold
Panel of gauge(FRU/US)
Panel of gauge(FRU/EU)
Panel of gauge(FRU/EU/big tank)
Panel of gauge(FRU/reverse EU)
115-034400-00
115-025569-00
115-036378-00
115-024841-00
115-024842-00
115-024843-00
115-034451-00
801-0631-00140-00
115-023320-00
801-0631-00008-00
115-024844-00
115-024845-00
115-024846-00
801-0631-00012-00
801-0631-00076-00
801-0631-00024-00
115-023177-00
115-023179-00
115-023180-00
115-023181-00
7-3
21
22
23
29
24
25
28
27
26
29
30
No.
Description
P/N
20
21
maintenance cover
Air cylinder yoke assembly (with copper pipe)
Air cylinder yoke assembly (with copper pipe/air
driven)
N2O cylinder yoke assembly (with copper pipe)
O2 cylinder yoke assembly (with copper pipe)
O2 cylinder yoke assembly (with copper pipe/air
driven)
Caster
115-026809-00
115-034396-00
115-040986-00
AGSS transfer tube
AGSS assembly (high flow)
AGSS assembly (low flow)
Work surface cover plate
Cylinder lock block
Tank knob
801-0631-00074-00
115-017377-00
115-017378-00
801-0631-00120-00
041-002678-00
043-001266-00
22
23
24
26
27
28
29
30
7-4
115-034397-00
115-034395-00
115-040984-00
034-000285-00
7.3.2 A5 Upper Half
1
2
17
3
16
4
5
15
6
14
17
7
No.
1
2
3
4
5
6
7
8
9
10
8
9
10
11
12
Description
Pneumatic resistor module assembly
ORC assembly
N2O supply inlet assembly(NIST)
Air supply inlet assembly(NIST)
O2 supply inlet assembly(NIST)
N2O pressure regulator assembly
O2 and Air pressure regulator assembly
O2 system switch
Indicator light board PCBA
Pressure test tube (left)
11
Pressure test tube (middle)
12
Pressure test tube (right)
13
14
15
16
17
Electro flowmeter assembly
Electro flowmeter board (FRU/0634/without N2O)
PCBA
Back pressure valve
Poppet valve
Lithium battery (11.1V, 4500mAh)
N2O needle valve
7-5
13
P/N
801-0631-00119-00
115-051809-00
801-0631-00128-00
801-0631-00129-00
115-015435-00
801-0631-00086-00
801-0631-00087-00
801-0631-00003-00
801-0631-00004-00
801-0631-00123-00
115-034389-00
801-0631-00124-00
115-034390-00
801-0631-00125-00
115-034391-00
115-044266-00
(O2/N2O/air)
115-044267-00 (O2/air)
115-024621-00
115-033941-00
115-036458-01
115-062081-00
082-002943-00
7.3.3 A5 Hardware Box
9
8
7
6
11
5
4
12
3
13
2
14
1
15
No.
Description
P/N
1
2
3
4
5
Top light board PCBA
Speaker and connection line
Power socket 3C certificate (black)
Breaker (3.0A)
Breaker (10.0A)
Breaker (5.0A)
Filter
Fan
Power board PCBA
Air deflector plate
Main control board
Battery adaptation board PCBA
Monitoring module
Motherboard PCBA
Three-way valve assembly (applicable for system
without ACGO configuration)
Three-way valve assembly (ACGO) FRU
801-0631-00039-00
801-0631-00038-00
801-0631-00132-00
801-0631-00031-00
801-0631-00030-00
801-0631-00130-00
801-0631-00029-00
801-0631-00028-00
801-0631-00025-00
/
115-035003-00
801-0631-00109-00
115-051206-00
801-0631-00108-00
6
7
8
9
11
12
13
14
15
7-6
801-0631-00046-00
801-0631-00146-00
7.3.4 A5 Work Surface
2
3
1
4
11
5
6
7
8
9
10
No.
Description
P/N
1
2
3
4
5
6
7
Limit switch
Auto/Manual switch spring
Drive shaft
Spare maintenance kit of circuit heater
Circuit adapter block cover
O2 sensor connector
O2 flush assembly
8
ACGO assembly
9
10
11
Track pad FRU
Touch pad
Spare maintenance kit of expiratory valve
assembly (DSP)
Gas reservoir assembly
801-0631-00101-00
801-0631-00114-00
801-0631-00113-00
115-034450-00
801-0631-00068-00
801-0631-00067-00
801-0631-00044-00
801-0631-00045-00 (Common Gas
Outlet assembly)
115-043752-00 (ACGO)
115-043753-00 (independent
ACGO/anesthesia calculation)
115-017032-00
801-0631-00052-00
13
7-7
115-036693-00
801-0616-00007-00
7.3.5 A5 Patient Circuit Main Body
1
14
2
13
3
12
11
4
5
10
9
6
7
8
No.
Description
P/N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Bellows housing
Bellows assembly
Airway pressure gauge
Expiratory flow sensor assembly
Inspiratory/expiratory interface
Breathing circuit unit
Rotary cap for inspiratory/expiratory interface
Water collection cup
Inspiratory flow sensor assembly
O2 cell cover and O2 cell cable
APL valve assembly
Auto/Manual switch assembly
Check valve
Bag arm assembly
801-0631-00054-00
0601-30-78968
115-051819-00
801-0631-00056-00
801-0631-00057-00
115-025565-00
801-0631-00059-00
801-0631-00058-00
801-0631-00060-00
801-0631-00102-00
801-0631-00062-00
801-0631-00065-00
801-0631-00104-00
115-048600-00
7-8
7.3.6 A5 Pre-pak Absorber Canister Assembly
4
3
1
2
No.
Description
P/N
1
2
3
4
5
Absorber hose
CO2 absorber base
Bottom plate
CO2 absorber canister
CO2 bypass assembly
801-0631-00092-00
801-0631-00100-00
801-0631-00100-00
801-0631-00066-00
115-036378-00
7-9
7.3.7 A5 Valve Assembly
1
2
3
No.
Description
P/N
1
2
3
Valve cover
Valve shield
Valve
801-0631-00061-00
801-0631-00110-00
801-0631-00111-00
7-10
7.3.8 A5 O2 Cell Assembly
1
3
2
No.
Description
P/N
1
2
3
O2 cell cover
MedicelMOX-2 O2 sensor (O2 sensor)
O2 cell cable
801-0631-00090-00
0611-10-45654
801-0631-00091-00
7-11
7.3.9 A5 Display Assembly
1
3
2
4
No.
Description
P/N
1
/
N2O needle valve (Applicable for device with O2, N2O
and Air configuration)
Air needle valve (Applicable for device with O2, N2O
and Air configuration)
O2 needle valve (Applicable for device with O2, N2O
and Air configuration)
O2 needle valve (Applicable for device with O2 and Air
configuration)
/
2
3
4
3, 4
7-12
115-036762-00
115-036457-00
115-036761-00
115-024292-00
7.3.10 A5 Display Assembly Main Body
1
2
3
4
5
No.
Description
P/N
1
Alarm lamp board PCBA
Touch screen replacement material package FRU
(0634)
Display screen
Touch screen control board
Display interface board PCBA
801-0631-00019-00
2
3
4
5
7-13
801-0631-00014-00
115-036373-00
801-0631-00018-00
801-0631-00017-00
7.3.11 A5 Vaporizer Manifold
1
2
3
No.
Description
P/N
1
2
3
Connector (vaporizer fixing)
Vaporizer manifold valve
Vaporizer manifold spring
801-0631-00117-00
801-0631-00106-00
801-0631-00107-00
7-14
7.3.12 A5 Auxiliary Gas Outlet Assembly
1
2
No.
Description
P/N
1
2
Auxiliary gas supply flowmeter lighting board PCBA
Auxiliary gas outlet fitting (FRU)
801-0631-00002-00
801-0631-00122-00
7-15
7.3.13 Base Assembly
1
2
3
4
5
No.
Description
P/N
1
2a
2b
3
4
Brake assembly (FRU)
Long ram of the brake (0634)
Short ram of the brake (0634)
Indicator light drive board
Brake principal axis
Chassis assembly FRU (CE)
Chassis assembly FRU (CFDA)
115-016692-00
042-016810-00
042-017262-00
801-0631-00072-00
041-022463-00
115-044426-00
115-044424-00
5
7-16
7.3.14 Cart Assembly
2
3
1
4
No.
1
2
3
4
Description
M01A AION AG module(03-31 type)
AG calculation inlet tube assembly (0632)
Filter.0.45um,TP026AATV004AD01
Anesthetic signal adapter board (service parts)
P/N
115-002504-00
115-017879-00
082-000423-00
801-0613-00033-00
7.3.15 Other
1
2
3
7-17
No.
Description
P/N
1
2
3
–
–
–
Cylinder wrench
A5 preoperative checklist
A5 auxiliary O2/Air reference card
Basic maintenance kit (12-month) (0635)
Expand maintenance kit (36-month) (0635)
Complete maintenance kit (12-month) (0635)
115-033063-00
801-0631-00081-00
801-0631-00082-00
115-036367-00
115-036368-00
115-036369-00
7.3.16 Tubes
No.
Description
P/N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
7mmX10mm transparent PU tube (polyether)
3/32"X7/32"X100ft silicone
8mmx5mm transparent PU precision hose
20X25mm silica gel
4*6 transparent PU tube
Tubing. 4mmx2.5mm transparent PU precision hose
Tubing.MPF tube 2mmX3.5mm (1feet)
PE Tubing.ID2XOD4
Tubing.ID3/32''XOD5/32'',Silicon
System Tubing PUR.AION,1.4/2.8mm,60-12110-00
System Tubing PUR.AION, 2.2/4.4mm,60-12120-00
Moisture Exchanger Assembly
Driver gas spring tube assembly
APL valve spring tube assembly
082-000519-00
A21-000007--M6G-020014--M6G-020018--M6G-020026--M6G-020046--M6G-020005--082-001198-00
60-12140-00
9200-10-10556
9200-10-10557
082-001461-00
115-034448-00
115-034449-00
7-18
7.3.17 O-ring
No.
Description
P/N
Notes
1
Valve port sealant
Cushion of CO2 bypass
assembly
Absorber canister external
cushion
Absorber canister internal
cushion
CO2 absorber hose
pop-off rubber feet
Bellows absorber bottom
cushion
AGSS filter screen
14X2.65 O-ring (used for
vaporizer manifold)
30X2 O-ring
25X2 O-ring
27X1.5 O-ring
18X2.5 O-ring
20X1.5 O-ring
049-000140-00
Used for CO2 bypass shaft
049-000142-00
/
049-000143-00
/
049-000145-00
/
049-000146-00
049-000240-00
/
/
049-000243-00
/
082-000506-00
082-000624-00
082-000625-00
082-001501-00
082-000627-00
082-001503-00
23.47X2.95 O-ring
082-001504-00
52X2 O-ring
29X2.62 O-ring
082-000630-00
082-000633-00
6.07X1.78 O-ring
082-000641-00
29.82X2.62 O-ring
40X2.2 O-ring
8.5X2.0 O-ring
082-000642-00
082-000648-00
082-001525-00
8.5X2 O-ring
082-000665-00
4.7X1.8 O-ring
082-000667-00
6X1 O-ring
082-000669-00
15.54X2.62 O-ring
082-000673-00
4.47X1.78 O-ring
O-ring (used for airway
pressure gauge)
082-000679-00
/
Used for vaporizer fixing
connector
Base of bag arm
APL valve
Used for check valve dome
Base of breathing system
Used for check valve
Used for water collection cup
and CO2 bypass assembly
Auto/Manual switch
Bellows base
Bottom of the breathing system
cover screw
APL valve
Auto/Manual switch
O2 cell port
Used for rotary module of
breathing circuit
Used for rotary module of
breathing circuit
Used for Auto/Manual switch
Used for bag arm and O2 cell
cover
Used for CO2 bypass shaft
082-001524-00
Used for airway pressure gauge
16X2 O-ring
M6M-010058---
O-ring maintenance kit
801-0631-00141-00
2
3
4
5
6
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
082-000934-00
7-19
Used for rotary module of
breathing circuit
/
FOR YOUR NOTES
7-20
A Test Items
A.1 Test items after installation
Hospital name:
Instrument SN:
Test Item After Installation
Reference Section in
the Service Manual
Test
Completed
□
Breathing System Leak Test in Mechanical Ventilation
Mode
2.4.2.1
Breathing System Leak Test in Manual Ventilation Mode
2.4.2.2
□
N2O Cylinder Leak Test
2.5.1
□
O2 Cylinder Leak Test
2.5.2
□
Air Cylinder Leak Test
2.5.3
□
N2O Pipeline Supply Pressure Leak Test
2.5.4
□
O2 Pipeline Supply Pressure Leak Test
2.5.5
□
Air Pipeline Supply Pressure Leak Test
2.5.6
□
Vaporizer Leak Test
3.11.3
□
O2 Flush Verification
2.4.1.1
□
O2 Sensor Calibration
2.4.3
□
Manual Mode Ventilation Test
3.9.2
□
VCV Adult Ventilation Mode Test
3.9.5
□
PCV Adult Ventilation Mode Test
3.9.8
□
A-1
A.2 Test items after maintenance
Hospital name:
Instrument SN.:
Test Item After Maintenance
Reference Section in
the Service Manual
Test
Completed
□
Breathing System Leak Test in Mechanical Ventilation
Mode
2.4.2.1
Breathing System Leak Test in Manual Ventilation Mode
2.4.2.2
□
Vaporizer Leak Test
3.11.3
□
O2 Flush Verification
2.4.1.1
□
O2 Sensor Calibration
2.4.3
□
Manual Mode Ventilation Test
3.9.2
□
Power Failure Test
3.13.1
□
Performance Verification
3.9
□
Check the Sensor Zero Point
3.6.3
□
Check the Accuracy of Flow Sensors
3.6.4
□
Check the Accuracy of Pressure Sensors
3.6.5
□
A-2
A.3 Test items after service
Hospital name:
Instrument SN.:
Reference Section in
the Service Manual
Test Item After Service
Test
Completed
□
System self-test
□
Breathing System Leak Test in Mechanical Ventilation
Mode
2.4.2.1
Breathing System Leak Test in Manual Ventilation Mode
2.4.2.2
□
N2O Cylinder Leak Test
3.7.1
□
O2 Cylinder Leak Test
3.7.2
□
Air Cylinder Leak Test
3.7.3
□
N2O Pipeline Supply Pressure Leak Test
3.7.4
□
O2 Pipeline Supply Pressure Leak Test
3.7.5
□
Air Pipeline Supply Pressure Leak Test
3.7.6
□
Needle valve correspondence test
□
Needle valve microswitch test
□
Alarm of Drive Gas Pressure Low, N2O Cutoff Test
3.8.3
□
O2:N2O Ratio System
2.4.1.2
□
Vaporizer Interlock Test
3.11.1
□
Vaporizer Accuracy Test
3.11.2
□
Vaporizer Leak Test
3.11.3
□
O2 Flush Verification
2.4.1.1
□
O2 Sensor Calibration
2.4.3
□
Manual Mode Ventilation Test
3.9.2
□
Sample Gas Emission Test/AGSS Test (optional
configuration)
3.8.1
Power Failure Test
3.12.1
□
Alarm of Drive Gas Pressure Low, N2O Cutoff Test
3.8.3
□
Performance Verification
3.9
□
Check the Sensor Zero Point
3.6.3
□
Check the Accuracy of Flow Sensors
3.6.4
□
Check the Accuracy of Pressure Sensors
3.6.5
□
Auxiliary AC Electrical Outlets Test
3.14
□
Work Light and Auxiliary Gas Supply Backlight Test
3.13.2
□
Electrical Safety Inspection
3.15.2
□
A-3
□
FOR YOUR NOTES
A-4
P/N: 046-002301-00(9.0)