NEPTUNE
ELECTRONIC VENTILATOR
TECHNICAL MANUAL
3rd edition
August 2007
MEDEC BENELUX NV
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronically,
mechanically, by photocopying, recording or otherwise, without the prior written
permission of Medec Benelux NV.
Medec Benelux NV reserves the right to change specifications without prior
notification. Careful attention has been paid to the compilation of this publication.
Medec Benelux NV
Lion D’Orweg 19
9300 Aalst
Belgium
Telephone : (32) 53 / 70.35.44
Fax
: (32) 53 / 70.35.33
Website : www.medecbenelux.be
E-mail
: sales@medecbenelux.be
3rd edition
August 2007
User responsibility
The equipment described in this manual has been built to confirm with the
specifications and instructions stated in this manual. To ensure proper and safe
operation of the equipment, it must be checked and serviced at least according to the
minimum standards laid out in this manual.
The equipment must be repaired and serviced only in accordance with written
instructions issued by Medec Benelux N.V. and must not be altered or modified in
any way without written approval of Medec Benelux N.V. The user of this equipment
shall have the responsibility for any malfunction which results from improper use,
maintenance, repair, damage or alteration by anyone other than Medec Benelux N.V.
or its appointed agents.
The Neptune anaesthesia combination has been specially developed for anaesthetic
applications.
The system is built around the so-called bag in bottle principle. This system has for
many years proved to be a reliable and safe system. One important aspect in this
connection is that the gas exchange of the patient is completely separated from the
machine by use of the bag mentioned.
Another important aspect is that the Neptune anaesthesia system, whatever
catastrophe might occur (compressed air, mains voltage failure or technical
problems), always goes into the spontaneous / manual respiration mode. This way, the
(manual) respiration of the patient is always guaranteed as long as the fresh gas
supply is assured.
The Neptune anaesthesia system may only be used in anaesthetic rooms which are
conducting and are provided with proper ventilation and electrical wiring.
The Neptune anaesthesia system may only be used in anaesthetic rooms conform with
EN60601-1-2 level. RS232 output (optional) may only be used with devices conform
with EN60601-1-2 level.
Table of Contents
1. Electronic system
1.1 Electronic system overview
1.2 Power supply
1.2.1 Replacing the AC mains fuses
1.2.2 Block diagram
1.2.3 Schematic diagram
1.2.4 Power supply board layout
1.3 Backplane board
1.3.1 Block diagram
1.3.2 Schematic diagram
1.3.3 Backplane board layout
1.4 MMI board
1.4.1 Block diagram
1.4.2 Schematic diagram
1.4.3 MMI board layout
1.4.4 Build-in test software
1.4.5 Graphics display
1.5 O2 measurement
1.5.1 General
1.5.2 Operation
1.5.3 O2 measurement specifications
1.6 Master board
1.6.1 Block diagram
1.6.2 Schematic diagram
1.6.3 Build-in test software
1.6.4 Master board layout
1.7 Pneumatic board
1.7.1 Block diagram
1.7.2 Schematic diagram
1.7.3 Built-in test software
1.7.4 Pneumatic board layout
2. Pneumatic system
2.1 Pneumatic diagram
2.2 Manual/Spontaneous mode (MAN)& Anti-volutrauma
2.3 Controlled mandatory ventilation (CMV)
2.4 Pressure controlled ventilation (PCV)
2.5 Peep
2.6 Anti-barotrauma
2.7 Mechanical construction
2.7.1 Patient breathing unit
2.7.2 Bottle
2.7.3 Supply tank
2.7.4 Solenoid valves
1
5
5
8
11
12
14
16
17
19
25
27
53
54
54
55
56
58
61
69
70
72
77
85
86
88
91
93
95
95
96
100
102
103
3. Maintenance and calibration
3.1 Visual inspection
3.2 Battery backup
3.3 The calibration menu
3.4 The pressure transducers
3.5 The pressure regulators
3.6 The flow regulators
3.7 O2 flush
3.8 The input pressure switches
3.9 The bottle safety valve
3.10 Peep valve calibration
3.11 Valve test
3.12 Performing a leaktest
3.12.1 Entering the leaktest menu
3.12.2 Performing the leaktest
3.12.3 Leaving the leaktest menu
3.13 Maintenance instructions
3.14 Parts list
4. Classification and discard
4.1 Classification
4.2 Discard
5. Inspection
5.1 Visual inspection
5.2 Other inspections
6. Troubleshooting
A. Checklist Neptune
B. List replaced parts
104
105
106
109
114
117
119
120
125
126
127
130
132
135
136
141
142
143
144
145
148
165
166
1. ELECTRONIC SYSTEM
1.1 ELECTRONIC SYSTEM OVERVIEW
The Neptune contains several electronic printed circuit boards, which are located on
different locations in the machine.
Electronic system overview
Neptune ventilator
1
Technical manual
•
Mains AC input
The AC inlet at the back of the ventilator contains a fuse holder and power switch.
The AC mains voltage is connected to the AC/DC converter board.
•
AC/DC converter board
The AC/DC converter board converts the AC mains voltage to +24V DC voltage.
The +24V DC is fully isolated from the AC mains voltage to ensure safe working
conditions.
•
DC/DC power supply
The DC/DC power supply board generates different DC voltages and controls the
battery charging current. A special battery controller device will charge the battery
as safe as possible and under the best conditions to have a long battery lifetime.
The DC/DC power supply output voltages are:
o
o
o
o
•
+5V DC
+12V DC
+24V DC
+12V DC
Extendable system set
The extendable system set consists of 4 different boards that are connected by
means of 2 elevated multiple pins connectors:
o
o
o
o
MMI board
Backplane board
Master board
Pneumatic board
The 4 different boards have their own specific tasks. The MMI board, master
board and the pneumatic board have one or more microprocessors and other
electronic devices on board. The backplane board only contains connectors and
has no microprocessor. The extendable system set is built so that further
expansion of the electronics is possible by means of the elevated multiple pins
connectors.
•
Backplane board
The backplane board contains buzzer, O2 sensor, power switch and power supply
connectors. The power connector is connected to the DC/DC power supply. The
board is distributing the different DC voltages through the extendable system set.
Neptune ventilator
2
Technical manual
•
MMI board
The MMI board contains only one microprocessor. It’s reprogrammable so it can
be upgraded if necessary. The microprocessor controls all the graphical display
functions and is communicating - by means of the master board - with the
pneumatic board. The microprocessor is also controlling the keyboard board, the
control knob and the speaker.
•
Master board
The master board contains one microprocessor and is also reprogrammable if
necessary. The master board looks after the communication between the MMI
board and pneumatic board.
The master board microprocessor checks the proper working of the MMI and
pneumatic board microprocessors. Otherwise, the MMI board microprocessor
checks the proper working of the master and pneumatic board microprocessor and
the pneumatic board microprocessor checks the MMI and master board
microprocessors. Each microprocessor is checking the other microprocessors for
errors or malfunctions, which makes the ventilator a very safe system. Once an
error is found, the electronics stop working and a continuous beep is audible.
Note:
•
The ventilator automatically switches over to manual mode after an error
or malfunction is detected.
Pneumatic board
The pneumatic board contains one microprocessor. This microprocessor is
reprogrammable for upgrades if necessary. The pneumatic board of course
controls the pneumatic functions of the ventilator. There are six pressure
transducers mounted on the board for measuring all kinds of parameters. The
pneumatic board also drives the electrical valves on the manifold and bottle. The
microprocessor receives settings from the MMI board and processes the values.
The pneumatic board microprocessor sends information back to the MMI board
like e.g.: actual airway pressure, alarms, patient status values, etc.
•
Keyboard board
The keyboard board contains several switches and leds for interaction between the
operator and the electronic system. The keyboard board is connected to the MMI
board and processed by the microprocessor on the MMI board.
Neptune ventilator
3
Technical manual
•
Graphical display
The graphical display shows all kind of information. It consists of menus, settings,
parameters, graphs, etc. The display is also responsible for interaction between the
operator and the ventilator electronics.
Along with the keyboard switches and leds, they form the operator’s interface.
Neptune ventilator
4
Technical manual
1.2 POWER SUPPLY
The AC mains inlet at the back of the ventilator is equipped with a power switch and a
fuse holder block. The fuse holder contains two fuses type 2A slow.
The AC mains voltage must be in the range from 100V AC to 240V AC. The AC
mains frequency must be in the range from 50 Hz to 60 Hz. These are the absolute
maximum ratings for the AC mains supply.
1.2.1 Replacing the AC mains fuses
Replace the AC mains fuses by mean of the following instructions:
Note:
-
Turn off the Neptune and disconnect the power cord from the mains
inlet.
-
Insert a screwdriver in the small AC receptacle and pull out the fuse
holder block.
-
Replace the blown fuses and place the fuse holder block back into the
AC receptacle.
-
Connect the power cord back to the AC mains inlet.
Always replace the blown fuses with the same type and ratings.
1.2.2 Block diagram
The power supply block diagram is represented on the next page.
Neptune ventilator
5
Technical manual
Block diagram power supply
Neptune ventilator
6
Technical manual
The battery-charging unit charges the battery to maintain a maximum battery capacity
and life.
If the AC mains supply voltage is present, the battery is charged with a maximum
current of approximately 0,9 Ampere. After a while, the charging current decreases
and a minimum trickle current of 0.09 Ampere flows through the battery. To
guarantee full recharge of an exhausted battery, connect the ventilator to the mains
supply for at least a couple of hours.
Note:
The switch at the back of the ventilator must be turned ON to activate the
battery charging.
Note:
The ventilator uses high voltages, capable of causing personal injury.
Do not touch the AC mains voltage electronics during operation.
If an AC mains power failure occurs, the power supply automatically switches over to
battery supply. You can work approximately 1 hour on battery supply. The batterycharging unit monitors the battery voltage and checks for a battery voltage lower than
10,5 Volt. If the battery voltage is getting lower than 10,5 Volt, the power supply
electronics is disconnected from the battery to prevent a totally exhausted battery. A
totally exhausted battery will shrink the battery lifetime enormously.
An audible alarm is activated during 20 seconds after the ventilator shuts off because
of an empty battery.
The power supply board is equipped with 5 fuses:
-
battery
+5V DC
+12V DC
+24V DC
+12V DC
fuse F1:
fuse F2:
fuse F3:
fuse F4:
fuse F5:
3,15A slow
3,15A slow
3,15A slow
3,15A slow
3,15A slow
The green LEDs indicate if a voltage is present:
-
LED D19 indicates the +24V DC input voltage from AC/DC converter
LED D14 indicates the +5V DC output voltage
LED D15 indicates the +12V DC output voltage
LED D16 indicates the +12V DC output voltage
LED D17 indicates the +24V DC output voltage
The +24 Volt DC output voltage is not available when working on battery. This
means that LED D19 and D17 aren’t lit in this situation.
You can rapidly determine a blown fuse by taking a look at the LED indicators. There
is no LED indicator provided on the battery input voltage to prevent a waste of battery
power.
Neptune ventilator
7
Technical manual
The power supply board is provided with four connectors:
•
Connector P3:
Pin number
1
2
3
4
5
6
•
Connector P1:
Pin number
1
2
3
4
5
6
•
Description
+5V DC output voltage
GND
+12V DC output voltage
GND
+24V DC output voltage
GND
Connector P2:
Pin number
1
2
3
4
•
Description
+24V DC input voltage
+24V DC input voltage
GND
GND
Battery + input voltage
Battery – input voltage
Description
+12V DC output voltage
+12V DC output voltage
GND
GND
Connector P4:
Pin number
1
2
3
Description
AC mains LED indicator voltage
Ventilator ON/OFF switch input
Ventilator ON/OFF switch input
1.2.3 Schematic diagram
The schematic diagram of the power supply is represented on the following pages.
Neptune ventilator
8
Technical manual
1
2
+24V
1
+24V
2
D
D19
+24v
R36
10K GREE
GND
4
BAT+
5
BAT-
GND
GND
C
GND
Q8
BD242
GND
294K
D2
8
11
9
10
GND
S
CLK
D
R
MBR36
GND
MBR36
+12V
4
C1
1µF/25
+24V
GND
GND
1
Neptune ventilator
+12V
R23
100R
2
BS25
D12
1N414
C3
10µF/25
D13
R16
100K
+12V +12V
R1
93K1
CD409
BZ
X7
9C
R14 20
1k
R18
100
+12V
GND
BS17
B
B1
GND
R3
1k2
+12V
C7
100N/40
GND
R7
R243
3
2
14
15
8
5
6
12
11
GND
GND
Q6
4
U1
IN+
ININ+
INFB
IN+ OP1
IN- OP1
IN+ OP2
IN- OP2
V+
OUT
GND
LM61
OUT
CATHOD
OUT
OUT
1
9
7
10
GND
GND
U4A CD4013
+12V
14
16
6
3
5
4
S
CLK
D
R
V13
GND
1
2
Q
Q
GND
GND
Title
Size
GND
Date:
File:
2
3
9
BUZZE
Q7
R17
100K
7
VCC GND
C9
10µF/25
GND
R20
R330
Q3
A4
GND
1
13
10
9
R6
18k
CD409
7
7
8
R2
13k
14U3B
6
Q5
14 U3C
GND
13
12
C
BS25
+12V
5
SW_ON_OFF
47
0K
Q2
11
12
+24v
GND
SW_ON_OFF
SW_ON_OFF
CD409
7
Q
Q
SW5V
SW_ON_OFF
3
+12V
VCC GND
SW12
SW5V
GND
+12V
14
CD4013
U4B
+12Vou
SW12
MBR36
D
SW16
BS17
R11
23k
100N
+12V
MBR36
GND
C5
7
GND
A
D1
+24V
BS17
7
CD409
R4
100K
+24V
D3
R10
R787
R13
+12V
14
2
C2
1µF/25
R12
R470
+16Vou
+12Vou
2
U3D
3
680K
D11
1n414
1
R9
107K
POWER
regulators.sc
+16Vou
GND
1
R22
GND
MBR36
R19
C4
100N
14U3A
3
D6
D5
Q1
16
15
14
13
12
11
10
9
+12V
R5
1M
2
MBR36
D4
UC390
1
B
3
R21
22K
MBR36
+12V
KEYBOAR
P4
D7
SW16
Q9
RFP30P0
GND
6
c/sd.si.
c/ld.so.
c/s+
comp.
v.in vol.sens
c/s
char.en.
o.c.t. trik.bia
gnd st.lev.con
o.ch.ind
p.i.
+24v
+VBA
F1
R0.2
U2
C8
100N/40
3.15A/
R8
2
4
3
5
1
8
6
7
+24V
3
GND
+24V
4
3
+24V
DC INPUT
P3
BS25
GND
C6
2200µF/25
GND
A
POWER SUPPLY
Number
Revisio
PSU042000V1
6-Jan-2003
C:\DOCUMENT\..\psu042000v1
Sheet 1 of 2
Drawn
JP - KDP
4
Technical manual
1
2
SW12V
SW5V
SW_ON_OFF1
1
Vin
FB
GND
Vsw
Q4
1
68µH
+16V
3.15A/T
2
R30
D10
MBR745
Vc
+ C12
470µF/63V
GND
+16V
R29
2K7
9090
3
GND
4
R33
2K7
BS170
R31
1500
C19
GND
10N
GND
C15
1000µF/50V
GND
D16
D18
20V
GND
GND
GND
C
U5
MIC4576BT
2
68µH
3
GND
GND
3.3N/63V
R24
3.15A/T
D15
GND
C
R32
10K
R28
2K7
C13
1000µF/50V
13K
+24v
F4
3.15A/T
C17
MBR360
GND
F3
D8
+ C10
470µF/63V
GND
L1
IN OUT
FB
ON/OFF
GND
1
4
5
GND
R25
1K5
D17
GREEN
SW_ON_OFF1
R35
100K
D
P2
F5
L3
4
GREEN
SW5V
+12Vout
5
LT1074CT
GREEN
SW12V
SW_ON_OFF2
U7
2
+12Vout
SW16V
DC OUTPUT CONNECTOR 2
R34
100K
GND
SW16V
SW_ON_OFF2
+16Vout
3
+16Vout
2
POWER SUPPLY
4
Q10
RFP30P05
1
3
D
3
GND
GND
GND
DC OUTPUT CONNECTOR 1
P1
B
GND
+ C11
470µF/63V
MIC4576BT
2
IN OUT
FB
ON/OFF
GND
U6
1
4
5
L2
F2
68µH
3.15A/T
R15
1K
D9
C16
3
GND
MBR360 3.3N/63V
C14
R27
R4530
1000µF/50V
GND
GND
R26
1K5
GND
GND
Size
A4
Date:
File:
1
Neptune ventilator
2
3
10
GND
5
+24V
4
GND
3
+12V
2
GND
1
+5V
B
GND
Title
A
GND
GREEN
D14
GND
GND
6
POWER SUPPLY - REGULATORS
Number
PSU042000V1
6-Jan-2003
C:\DOCUMENT\..\regulators.sch
A
Revision
Sheet 2 of 2
Drawn By: JP - KDP
4
Technical manual
1.2.4 Power supply board layout
Note:
Fan drive output voltage indicated by D16 = 12 Volt
Neptune ventilator
11
Technical manual
1.3 BACKPLANE BOARD
1.3.1 Block diagram
The block diagram of the backplane board is represented on the next page.
The DC voltages coming from the power supply are distributed on the backplane
board. Connector P1 is the connection to the power board.
Connector P2 and P3 are supplying the extendable system set of electrical power.
Connector P5 is the power on/off connection to the power supply (P4).
Connector P4 connects to the MMI board through a flatcable.
Connector P6 is used to connect the buzzer and the O2 sensor.
Neptune ventilator
12
Technical manual
Block diagram backplane board
Neptune ventilator
13
Technical manual
1.3.2 Schematic diagram
The schematic diagram of the backplane board is represented on the next page.
Neptune ventilator
14
Technical manual
Neptune ventilator
15
Technical manual
1.3.3 Backplane board layout
Neptune ventilator
16
Technical manual
1.4 MMI BOARD
1.4.1 Block diagram
The block diagram of the MMI board is represented on the following page.
There is only one microprocessor provided on the MMI board. This main
microprocessor controls the control knob, the keyboard, the speaker sound, LCD and
the communication. It is reprogrammable by means of the programming interface
connector P1.
All the graphical data is stored in the flash memory. This flash memory is also
reprogrammable with the use of connector P1.
The RAM memory is used as video memory. The video memory is copied through the
LCD data bus to the on-board LCD controller.
The LED indicators are located on the top of the MMI board and consist of four
LEDs: one green LED and three red LEDs. They give you helpful information when
an error occurs. More about errors and malfunctions of the ventilator is described later
in this manual.
The main microprocessor is communicating with the master board by means of
connector P2. The MMI board sends to and receives information from the master
board. The master board can transmit to and receive data from the pneumatic board.
In this way the MMI board is communication with the pneumatic board.
Neptune ventilator
17
Technical manual
Block diagram MMI board
Neptune ventilator
18
Technical manual
1.4.2 Schematic diagram
The schematic diagram of the MMI board is represented on the following pages.
Neptune ventilator
19
Technical manual
1
2
3
4
VCC
R1
100K
R2
100K
R3
100K
R4
100K
D1
SW1
PF4
PF5
PF6
PF7
LCD
16MHz
X1
GND
CONTRAST_CS
XSCL
CLOCK
DATA
LEDBAR_CS
7SEG_CS
ADC_SCK
ADC_CS
KB_INT
ENC_B
ENC_A
LP
BUZ_CS
BUZ_ON_OFF
PE1
PE0
B
PF7
PF6
PF5
PF4
KEY_Y3
KEY_Y2
KEY_Y1
ADC_DATA
A14 5
TOSC2
TOSC1
XTAL2
XTAL1
VCC
PD7(T2) PB7(OC2/PWM2)
PD6(T1)PB6(OC1B/PWM1B)
PD5
PB5(OC1A/PWM1A)
PD4(IC1) PB4(OC0/PWM0)
PD3(INT3)
PB3(MISO)
PD2(INT2)
PB2(MOSI)
PD1(INT1)
PB1(SCK)
PD0(INT0)
PB0(ss)
32
31
30
29
28
27
26
25
9
8
7
6
5
4
3
2
54
55
56
57
58
59
60
61
52
62
63
64
53
VCC
RST
U8C
U6
18
19
C
WR
GND 20
PE7(INTR7)
PE6(INTR6)
PE5(INTR5)
PE4(INTR4)
PE3(AC-)
PE2(AC+)
PE1(PDO/TXD)
PE0(PDI/RXD)
PC7(A15)
PC6(A14)
PC5(A13)
PC4(A12)
PC3(A11)
PC2(A10)
PC1(A9)
PC0(A8)
PF7(ADC7)
PF6(ADC6)
PF5(ADC5)
PF4(ADC4)
PF3(ADC3)
PF2(ADC2)
PF1(ADC1)
PF0(ADC0)
VCC
AREF
AGND
AVCC
GND
PA7(AD7)
PA6(AD6)
PA5(AD5)
PA4(AD4)
PA3(AD3)
PA2(AD2)
PA1(AD1)
PA0(AD0)
ATmega103L
ALE
RD
WR
GND
RESET
PEN
ATMEGA128-16AI
23
24
21
17
16
15
14
13
12
11
10
PB7
PB6
PB5
PB4
MISO
MOSI
PB1
SS
42
41
40
39
38
37
36
35
A15
A14
A13
A12
A11
A10
A9
A8
44
45
46
47
48
49
50
51
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
VCC
43 ALE
34 RD
33 WR
22
1
GND
6
74VHC14
A15
13
9
8
U9C
10
11
U9D
12
U8B
GND
3
1
11
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
74VHC14
OC
CLK
2
3
4
5
6
7
8
9
1D
2D
3D
4D
5D
6D
7D
8D
F_A15
F_A16
F_A17
F_A18
R_A15
R_A16
19
18
17
16
15
14
13
12
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
4
74VHC574
5
1
GND
ALE
1
11
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
2
3
4
5
6
7
8
9
2
2
CS_F
74VHC32
1
74VHC14
U1
6
U9B
U8A
3
U9A
ADC_SCK
7
ADC_DATA
6
ADC_CS
5
O2
VCC
CLOCK
DATA
BUZ_CS
19
18
17
16
15
14
13
12
A0
A1
A2
A3
A4
A5
A6
A7
A15
1
A14
2
GND
CS_LCD
3
U10A
74VHC32
VCC
SCLK
DIN
CS
4
KEY_Y2
5
1
U10B
6
KEY_Y3
9
10
74VHC32
U10C
74VHC32
2
13
U10D
11 KB_INT
74VHC32
20
U2
Fo
VCC
SCK
Vref
SDO
Vin
/CS
C
1
1,2V
2
R12
3
4K7
4
GND
AGND
GND
H
W
L
+
-
OUT
+12V
11
B
12
R13
13
18K
7
GND
BUZZER
MMI board
Number
A4
Date:
File:
3
AGND
BUZ_ON_OFF
Size
ENC_SW 12
8
C23
1N
VCC
GND
Title
KEY_Y1
D
2
Vout
GND
AGND
U4
5
OC
C
1D
1Q
2D
2Q
3D
3Q
4D
4Q
5D
5Q
6D
6Q
7D
7Q
74VHC573
8D
8Q
C4
100N
+12V
1
2
3
CS_R
VCC
3
LTC2400CS8
14
74VHC32
C6
100N
AGND
8
4
U7
C3
100N
MAX6120EUR
VCC
A
Neptune ventilator
+ C22
AGND
74VHC32
74VHC32
C5
100N
U3
1
10
HEADER 2X1
VCC
6
GND
D4
GND
VDD
12P. C2
2
D3
DS-05 APEM
12P. C1
VCC
R8
1K5
PB7
PB6
PB5
PB4
GND
2,2µ / 10V Tant.
1
10
9
8
7
6
D2
IN-
Pspare
1
2
3
4
5
R7
1K5
9
LCD
MMI_LCD.sch
R6
1K5
SHDN
MMI_MEMORY.sch
D
R5
1K5
4
MMI_SPI.sch
VCC
VSS
MEMORY
IN+
MMI_LED.sch
MEMORY
SPI
8
RS485 DRIVER
7SEG - LED
MAX5437EUD
7 SEG-LED BAR
24-Mar-2004
C:\G\..\MMI.sch
Checked
Revision
MMI 092003v1
A
v1.0
Sheet 1 of 5
Drawn By: HDH
4
Technical manual
1
2
3
4
6
5
D
D
4 Mbit FLASH MEMORY
C
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
F_A15
F_A16
F_A17
F_A18
12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
1
WR
RD
CS_F
31
24
22
U11
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
1 Mbit SRAM
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
R_A15
R_A16
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
13
14
15
17
18
19
20
21
1
2
3
4
13
14
15
16
17
18
19
20
21
29
30
31
32
VCC
WR
RD
CS_R
WR
OE
CE
12
28
5
AM29F040B_90EC
U12
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
6
7
10
11
22
23
26
27
C
WR
OE
CE
HY628100B LLT1-70
B
B
MEMORY
VCC
A
C7
100N
A
C8
100N
Size
GND
B
Date:
File:
1
Neptune ventilator
2
MMI MEMORY
Title
3
4
21
5
Number
Checked
Revision
MMI 092003v1
24-Mar-2004
C:\G\..\MMI_MEMORY.sch
v1.0
Sheet 2 of 5
Drawn By: HDH
6
Technical manual
Neptune ventilator
1
2
CLK
LOAD(CS)
A
GNDGND
C12
100N
C9
100N
Dout
MAX7221CWG
C10
100N
C11
100N
GND
+ C100
10µ / 10V Tant.
18
24
13
12
1
GNDGND
+ C101
10µ / 10V Tant.
3
22
Iset
CLK
LOAD(CS)
DIN
MAX7221CWG
+ C102
4
Dout
18
24
13
12
1
VCC
GNDGND
Title
+ C103
Size
10µ / 10V Tant. 10µ / 10V Tant.
Date:
File:
B
5
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_DIG0
4_DIG1
4_DIG2
4_DIG3
4_DIG4
4_DIG5
4_DIG6
4_DIG7
14
16
20
23
21
15
17
22
2
11
6
7
3
10
5
8
R17
12K
Iset
CLK
LOAD(CS)
Number
DIN
MAX7221CWG
24-Mar-2004
C:\G\..\MMI_LED.sch
1_SEGA 11
10
1_SEGB
1_SEGC
8
6
1_SEGD
5
1_SEGE
12
1_SEGF
7
1_SEGG
1_SEGDP 9
16
15
3
2
1
18
17
4
a
b
c
d
e
f
g
DP
a
b
c
d
e
f
g
DP
a
b
c
d
e
f
g
DP
a
b
c
d
e
f
g
DP
D10
13
14
13
14
13
14
2_DIG4
2_DIG3
2_DIG6
2_DIG5
1_DIG4
2_DIG7
O2
1_DIG5
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
3_SEGA
3_SEGB
3_SEGC
3_SEGD
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_SEGA
4_SEGB
4_SEGC
4_SEGD
4_SEGE
4_SEGF
4_SEGG
4_SEGDP
4_SEGA
4_SEGB
4_SEGC
4_SEGD
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
MV59164
D16
Dout
7 SEGMENT DISPLAY - LED BAR
MMI 092003v1
Revision
MV59164
Aa
Ab
Ba
Bb
Ca
Cb
Da
Db
Ea
Eb
Fa
Fb
Ga
Gb
Ha
Hb
Ia
Ib
Ja
Jb
MV59164
Aa
Ab
Ba
Bb
Ca
Cb
Da
Db
Ea
Eb
Fa
Fb
Ga
Gb
Ha
Hb
Ia
Ib
Ja
Jb
MV59164
Aa
Ab
Ba
Bb
Ca
Cb
Da
Db
Ea
Eb
Fa
Fb
Ga
Gb
Ha
Hb
Ia
Ib
Ja
Jb
MV59164
Aa
Ab
Ba
Bb
Ca
Cb
Da
Db
Ea
Eb
Fa
Fb
Ga
Gb
Ha
Hb
Ia
Ib
Ja
Jb
MV59164
Aa
Ab
Ba
Bb
Ca
Cb
Da
Db
Ea
Eb
Fa
Fb
Ga
Gb
Ha
Hb
Ia
Ib
Ja
Jb
11
12
13
14
15
16
17
18
19
20
11
12
13
14
15
16
17
18
19
20
11
12
13
14
15
16
17
18
19
20
11
12
13
14
15
16
17
18
19
20
11
12
13
14
15
16
17
18
19
20
11
12
13
14
15
16
17
18
19
20
4_DIG6
4_DIG5
4_DIG4
4_DIG3
4_DIG2
4_DIG1
4_DIG0
3_DIG7
3_DIG6
3_DIG5
3_DIG4
3_DIG3
3_DIG2
3_DIG1
3_DIG0
5
D11
C-562G PARALIGHT
DIG2
DIG1
C-562G PARALIGHT
DIG2
DIG1
C-562G PARALIGHT
DIG2
DIG1
13
2_DIG2
2_DIG1
PEEP
1_SEGA
1_SEGB
1_SEGC
1_SEGD
1_SEGE
1_SEGF
1_SEGG
1_SEGDP
2_SEGA 11
2_SEGB
10
8
2_SEGC
6
2_SEGD
5
2_SEGE
12
2_SEGF
7
2_SEGG
2_SEGDP 9
16
15
3
2
1
18
17
4
a
b
c
d
e
f
g
DP
a
b
c
d
e
f
g
DP
D9
DIG 0
DIG 1
DIG 2
DIG 3
DIG 4
DIG 5
DIG 6
DIG 7
U13
VCC
19
2_SEGA
2_SEGB
2_SEGC
2_SEGD
2_SEGE
2_SEGF
2_SEGG
2_SEGDP
2_SEGA 11
10
2_SEGB
2_SEGC
8
2_SEGD
6
5
2_SEGE
12
2_SEGF
7
2_SEGG
2_SEGDP 9
16
15
3
2
1
18
17
4
C-562G PARALIGHT
DIG2
DIG1
14
13
2_DIG0
1_DIG3
MEAN
SEG A
SEG B
SEG C
SEG D
SEG E
SEG F
SEG G
SEG DP
3_DIG0
3_DIG1
3_DIG2
3_DIG3
3_DIG4
3_DIG5
3_DIG6
3_DIG7
2
11
6
7
3
10
5
8
2_SEGA
2_SEGB
2_SEGC
2_SEGD
2_SEGE
2_SEGF
2_SEGG
2_SEGDP
a
b
c
d
e
f
g
DP
a
b
c
d
e
f
g
DP
DIG2
C-562G PARALIGHT
D8
V+
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
14
16
20
23
21
15
17
22
R16
12K
DIG 0
DIG 1
DIG 2
DIG 3
DIG 4
DIG 5
DIG 6
DIG 7
U15
VCC
19
16
15
3
2
1
18
17
4
2_SEGA 11
2_SEGB
10
2_SEGC
8
6
2_SEGD
5
2_SEGE
12
2_SEGF
7
2_SEGG
2_SEGDP 9
2_SEGA
2_SEGB
2_SEGC
2_SEGD
2_SEGE
2_SEGF
2_SEGG
2_SEGDP
a
b
c
d
e
f
g
DP
14
13
PLATEAU
SEG A
SEG B
SEG C
SEG D
SEG E
SEG F
SEG G
SEG DP
2_DIG0
2_DIG1
2_DIG2
2_DIG3
2_DIG4
2_DIG5
2_DIG6
2_DIG7
2
11
6
7
3
10
5
8
2_SEGA 11
2_SEGB
10
2_SEGC
8
2_SEGD
6
5
2_SEGE
12
2_SEGF
7
2_SEGG
2_SEGDP 9
1_DIG2
Aa
Ab
Ba
Bb
Ca
Cb
Da
Db
Ea
Eb
Fa
Fb
Ga
Gb
Ha
Hb
Ia
Ib
Ja
Jb
D15
GND
DIN
V+
DIG 0
DIG 1
DIG 2
DIG 3
DIG 4
DIG 5
DIG 6
DIG 7
2_SEGA
2_SEGB
2_SEGC
2_SEGD
2_SEGE
2_SEGF
2_SEGG
2_SEGDP
DIG1
14
1_DIG1
13
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
3_SEGA
3_SEGB
3_SEGC
3_SEGD
3_SEGE
3_SEGF
3_SEGG
3_SEGDP
3_SEGA
3_SEGB
3_SEGC
3_SEGD
D14
GND
1
4
9
12
14
16
20
23
21
15
17
22
a
b
c
d
e
f
g
DP
C-562G PARALIGHT
DIG2
DIG1
1_DIG0
14
3
4
13
VCC
19
16
15
3
2
1
18
17
4
a
b
c
d
e
f
g
DP
a
b
c
d
e
f
g
DP
DIG2
D7
GND
V+
2_SEGA
2_SEGB
2_SEGC
2_SEGD
2_SEGE
2_SEGF
2_SEGG
2_SEGDP
1_SEGA 11
10
1_SEGB
1_SEGC
8
6
1_SEGD
5
1_SEGE
12
1_SEGF
7
1_SEGG
1_SEGDP 9
16
15
3
2
1
18
17
4
a
b
c
d
e
f
g
DP
DIG1
D6
GND
24
Iset
SEG A
SEG B
SEG C
SEG D
SEG E
SEG F
SEG G
SEG DP
1_DIG0
1_DIG1
1_DIG2
1_DIG3
1_DIG4
1_DIG5
1_DIG6
1_DIG7
2
11
6
7
3
10
5
8
1_SEGA
1_SEGB
1_SEGC
1_SEGD
1_SEGE
1_SEGF
1_SEGG
1_SEGDP
11
10
8
6
5
12
7
9
1_SEGA
1_SEGB
1_SEGC
1_SEGD
1_SEGE
1_SEGF
1_SEGG
1_SEGDP
a
b
c
d
e
f
g
DP
D13
9
18
GND
Dout
R15
12K
GND
DIN
DIG 0
DIG 1
DIG 2
DIG 3
DIG 4
DIG 5
DIG 6
DIG 7
U16
PEAK
4
LOAD(CS)
GND
SEG A
SEG B
SEG C
SEG D
SEG E
SEG F
SEG G
SEG DP
1_SEGA
1_SEGB
1_SEGC
1_SEGD
1_SEGE
1_SEGF
1_SEGG
1_SEGDP
16
15
3
2
1
18
17
4
1_SEGA
1_SEGB
1_SEGC
1_SEGD
1_SEGE
1_SEGF
1_SEGG
1_SEGDP
D5
9
CLK
GND
1
TIDAL VOLUME
MINUTE VOLUME
4
12
Iset
9
4
13
14
16
20
23
21
15
17
22
DATA
D12
DATA
18
VCC
19
R14
12K
2
LEDBAR_CS
V+
B
CLOCK
C
7SEG_CS
1
6
7SEG - LED
D
D17
D
C
B
U14
24
MAX7221CWG
GNDGND
Checked
A
Sheet 3 of 5
Drawn By: HDH
v1.0
6
Technical manual
1
2
3
4
6
5
D
VCC
C16
+ C24
100N
GND
C14
100N
100N
GND
SPI
C15
100N
GND
MOSIA
R18
MISOA
R19
SCKA
R20
SSSLV1A
R21
MOSIB
5K6
13
SCKB
5K6
SSSLV1B
5K6
U8F
SS
R22
+24V
MISOB
5K6
12
1
2
3
4
5
6
7
8
9
10
MISO
MOSI
SCK
SS
DE1/RE1
DR1
DR2
DE2/RE2
DE3/RE3
DR3
RO4
DI4
DE4
RE4
OA1
OB1
OA2
OB2
OA3
OB3
OA4
OB4
GND
MISOA
MISOB
MOSIA
MOSIB
20
19
18
17
15
14
13
12
11
MOSIA
MISOA
SCKA
SSSLV1A
BUZZER
+12V
SCKA
SCKB
SSSLV1A
SSSLV1B
PS_ON_OFF
O2
PMOSI
KEY_X1
5
3
RST
11
10
9
6
O/IA
BX
BY
O/IB
CX
CY
O/IC
14
PB1
15
PE1
P3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
GND
AGND
1_SEGA
1_SEGB
1_SEGC
1_SEGD
1_SEGE
1_SEGF
1_SEGG
1_SEGDP
1_DIG6
1_DIG7
KEY_X1
KEY_X2
KEY_Y1
KEY_Y2
KEY_Y3
PMOSI
4
1
U18
4
GND VCC
B
VCC
P1
2
RST
3
RST MR
MAX811L
C13
100N
PSCK
PMISO
INH
VCC
1
3
5
7
9
GND
PE0
A
B
C
CY3 R10
1K5
2
4
6
8
10
VCC VCC
R25
3K3
U8E
10
1K5
GND
2
4
6
8
10
GND
GND GND
1K5
GND
GND
VCC
R26
3K3
U8D
R27
3K3
9
A
8
Title
74AHC14
HEADER 5X2
Size
B
GND
Neptune ventilator
GND
HEADER 5X2 HAAKS
GND
VCC
1
3
5
7
9
74VHC14
2
CY1 R11
P4
11
A
1
CY2 R9
74HC4053
ENC_A
GND
AX
AY
C
GND
ENC_B
2
1
U19
R23
1K8
PS_ON_OFF
GND
ENC_SW
PMISO
KEY_X2
MOSIB
MISOB
SCKB
SSSLV1B
+24V
VCC
2
4
6
8
10
12
14
16
18
20
HEADER 10X2
GND
12
13
1
3
5
7
9
11
13
15
17
19
GND
DS36954
B
Q1
P2
U17
PSCK
SCK
D18
R24
3K3
74VHC14
C
1K8
CONNECT TO KEYBOARD
VCC
MMBF170
C17
+ C25
ZENER 20V 0,4W
+12V
4µ7 / 16V Tant.
4µ7 / 16V Tant.
D
GND
3
Date:
File:
4
23
5
MMI SPI
Checked
Number
Revision
MMI 092003v1
24-Mar-2004
C:\G\..\MMI_SPI.sch
v1.0
Sheet 4 of 5
Drawn By:
HDH
6
Technical manual
1
2
3
4
6
5
VCC
VCC
VCC
2
VCC
STR2
L1
47µH
2E
ISET
POL
D19
C31
MBR0540T1
R28
120K
GND
MAX629ESA
C29
10µ / 35V Tant. Low ESR
270K
WR
OE
CE
GND
GND
BS62LV256SC-70
1
2
3
SCLK
DIN
CS
H
W
L
GND
+
-
9
VA15
VCC
5
C32
2.2µF / 10V
GND
U5
14
CLOCK
DATA
CONTRAST_CS
3
REF
R31
GND
R30
6k8
4
FB
68K
VCC
10
2
2.2µF / 40V
SHDN
D20
R33
100pF / 40 V
5
C30
7
LX
MBR0540T1
VCC
1
GND
27
22
20
GND
A0
D0
A1
D1
A2
D2
A3
D3
A4
D4
A5
D5
A6
D6
A7
D7
A8
256
A9
A10
A11
A12
A13
A14
VD0
VD1
VD2
VD3
VD4
VD5
VD6
VD7
6
VWR
11
12
13
15
16
17
18
19
+
C
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
R29
-22V
U22
U21
VA0
VA1
VA2
VA3
VA4
VA5
VA6
VA7
VA8
VA9
VA10
VA11
VA12
VA13
VA14
OUT
11
12
C
13
7
SHDN
GND
8
GND
4
C28 +
100N
D
6
C21
VSS
GND
VDD
GND
IN-
1
GND
IN+
100N
MAX5437EUD
C20
100N
8
C18
100N
10µ / 35V Tant. Low ESR
C19
D
VCC
10P.
GND
OSC2
NC
NC
NC
NC
XD0
XD1
XD2
XD3
XD0
XD1
XD2
XD3
LP
XSCL
YD
LP
XSCL
P5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
YD
Vo
D0
D1
D2
D3
/DOFF
FLM
N.C.
CL1
CL2
VDD
VSS
VEE
Vo
VSS
B
GND
+12V
C27
10P.
XD0
XD1
XD2
XD3
C26
10 MHz
X2
VD0
VD1
VD2
VD3
VD4
VD5
VD6
VD7
55
29
46
48
49
10
9
8
7
OSC1
S1D13305F00A1
U20
26
25
24
23
22
21
20
19
18
17
16
15
14
12
11
CONNECT TO LCD DISPLAY
VD0
VD1
VD2
VD3
VD4
VD5
VD6
VD7
YSCL
YD
YDIS
WF
LP
XSCL
XECL
VA0
VA1
VA2
VA3
VA4
VA5
VA6
VA7
VA8
VA9
VA10
VA11
VA12
VA13
VA14
VA15
AD6
AD7
5
6
CS_LCD
A0
AD0
AD1
AD2
AD3
AD4
AD5
54
B
VRW
VCE
RES
RD
WR
SEL2
SEL1
CS
A0
D0
D1
D2
D3
D4
D5
D6
D7
RST
RD
WR
44
45
47
50
51
52
53
GND 56
57
59
60
1
2
3
4
43
42
41
40
39
38
37
36
35
34
33
32
31
30
28
27
VWR
VA0
VA1
VA2
VA3
VA4
VA5
VA6
VA7
VA8
VA9
VA10
VA11
VA12
VA13
VA14
VA15
VCC
8
GND
7
6
A
5
Vin
Vout
GND
GND
GND
GND
NC
NC
U23
1
2
3
R32
1
82E
P6
CONNECT TO LED BACKLIGHT
2
GND
A
VCC
4
LM78L05ACM
1
STR1
Title
Size
2
B
Date:
File:
1
Neptune ventilator
2
3
4
24
5
Checked
LCD INTERFACE
Number
Revision
MMI 092003v1
24-Mar-2004
C:\G\..\MMI_LCD.sch
v1.0
Sheet 5 of 5
Drawn By: HDH
6
Technical manual
1.4.3 MMI board layout
Neptune ventilator
25
Technical manual
Neptune ventilator
26
Technical manual
1.4.4 Built-in test software
•
Start-up test
After turning the ventilator on, the MMI board will test the different functions.
During start-up the following tests are executed:
o Microprocessor internal functions tests:
ƒ test internal program memory
ƒ test internal SRAM memory
ƒ test the timers
ƒ test internal EEPROM memory
ƒ test Watchdog
o Microprocessor external functions tests:
ƒ test external SRAM memory
ƒ test external flash memory
ƒ test LCD driver with Medec logo
ƒ test keyboard for shorts
ƒ buzzer test
Neptune ventilator
27
Technical manual
ƒ
Visual test of the leds and the displays on the keyboard panel.
All segments and leds are on.
ƒ
Visual test of the barograph
The green leds light up from left to right and the red leds from
right to left.
o Microprocessor communication test:
ƒ Tests the communication between MMI board and master
board.
When all these tests are executed successfully, the MMI board is ready to start
working. If an error occurred, the type of error is displayed on the LED indicators.
G
Neptune ventilator
R
R
28
R
Technical manual
After start-up, the LED indicators can show the following errors:
LED indicators
Type error
Device is working properly
G
R
R
R
G
R
R
R
G
R
R
R
Microprocessor internal function error
Microprocessor external function error
Note:
Communication error
G
R R R
During error free operation of the ventilator, the LED indicators might be
turned on and off by the software. This is quite normal and has nothing to
do with error codes.
To determine the exact error on the MMI board, you have to perform a specific test by
using the build-in test software.
Note:
When executing a specific test on the MMI board, there will be no
communication between the master board and the MMI board. The master
board will interprete this as a communication error and a continuous beep
is audible. This can be very annoying. To prevent this error, put the master
board in internal test mode by setting dipswitch 1 high. For detailed
instructions, see the master board section later in this manual.
Neptune ventilator
29
Technical manual
•
Microprocessor internal function test
If a microprocessor internal error is detected, execute an internal function test as
follows:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o Display changes from normal to inverted to flashing
o If no errors where found, all the red LEDs are off and the green LED is
blinking
o If an error is detected, the error is indicated on the red error LEDs and
the green LED is off. The possible errors are illustrated in the table on
the next page:
Neptune ventilator
30
Technical manual
INTERNAL FUNCTION TEST ERROR CODES
Error LEDs
Error code
Description
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
Neptune ventilator
0
NO ERRORS detected, test loop is running
1
Internal PROGRAM MEMORY error
2
Internal SRAM error
3
Internal TIMER error
4
Internal EEPROM error
5
Internal WATCHDOG error
6
Reserved
7
Reserved
31
Technical manual
# Resolve internal function test error code 4 - Internal EEPROM error
To fix error code 4 or internal EEPROM error, follow the next steps:
o Turn the Neptune ventilator off
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o You will notice that all the LED indicators are blinking fast. This
means that the MMI board EEPROM settings are restored to the
factory settings. You need to check the values in the setup menu
afterwards
o Turn the ventilator off
o Repeat the microprocessor internal functions test described on the
previous page. If the EEPROM error still remains, contact an
authorized service engineer
Note:
Restoring the MMI EEPROM settings will not affect the pneumatic board
EEPROM settings. Calibration of the ventilator is not needed in this case.
Just check the power-on parameters and the speaker sound volume in the
setup menu.
Warning: Try to resolve internal function error code 4 (EEPROM error) with
the instructions described above. For all other internal function test
errors, contact an authorized service engineer.
Neptune ventilator
32
Technical manual
•
Microprocessor external function test
If a microprocessor external error is detected, execute an external function test as
follows:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o The Medec logo changes from time to time from normal to inverted to
flashing
o If no errors where found, all the red LEDs are off and the green LED is
blinking. Some devices need to be visually checked for failures.
o Visual test for the barograph: check that all red leds light up from right
to left and the green leds from left to right.
Neptune ventilator
33
Technical manual
o 7 segment displays:
all segments light up once. When a digit is done, the Dp segment is lit.
After this test, a counter from 0 to F is displayed on all digits.
Neptune ventilator
34
Technical manual
o Leds on the keyboard panel: the test starts with all leds off. Each led is
lit up once.
Battery => Tidal volume => Minute volume => O2 High => O2 Low
=> CMV => PCV => Manual => Standby => High pressure Alarm
=> Low pressure alarm => Apnea alarm => Trigger => LCD led.
After this test, the leds light up in the following sequence:
1° Standby (1)
2° Standby (1), High pressure (2)
3° Standby (1), High pressure (2), Low pressure (3)
4° Standby (1), High pressure (2), Low pressure (3), Apnea alarm (4)
5° Standby (1), High pressure (2), Low pressure (3), Apnea alarm (4),
Trigger (5)
6° Standby (1), High pressure (2), Low pressure (3), Apnea alarm (4),
Trigger (5) and LCD led (6)
2
3
4
5
6
1
o LCD contrast
In the FiO2 display appears a counter from 1 to 5.
The contrast of the LCD changes with each value.
Neptune ventilator
35
Technical manual
o Alarm buzzer volume
In the FiO2 display appears a counter from 1 to 5.
The audio volume of the buzzer changes with each value.
o
O2 sensor
In the FiO2 display appears O2.
When no sensor attached, the value should be around 7FFFF
When shorted, the value should be around 000000
A good sensor, should have a value around 3F8000
Neptune ventilator
36
Technical manual
o If an error is detected, the error is indicated on the red error LEDs and
the green LED is off. The possible errors are illustrated in the table
below.
EXTERNAL FUNCTION TEST ERROR CODES
Error LEDs
Error code
Description
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
G
R
R
R
Note:
0
NO ERRORS detected, test running
1
External FLASH/ROM error
2
External SRAM error
3
LCD DISPLAY DRIVER error
4
Reserved
5
Reserved
6
Reserved
7
Reserved
The external function test is running continuously. When an error is
detected, the error is indicated on the LED indicators, and the external
function test is repeated. It’s not necessary to turn the ventilator on and off
to repeat the external function test.
Neptune ventilator
37
Technical manual
# Resolve external function test error code 1 - External flash error
There is a problem with the external flash memory. The microprocessor is only
reading data from the flash memory for display on the graphics display.
Contact an authorized service engineer if the problem cannot be resolved.
# Resolve external function test error code 2 - External SRAM error
There is a problem with the external SRAM memory. The microprocessor is reading
data from and writing data to the external SRAM memory.
Contact an authorized service engineer if the problem cannot be resolved.
# Resolve external function test error code 3 - External display driver error
There is a problem with the external display driver. It’s not necessary to connect the
graphics display with the MMI board to perform an external display driver test. The
microprocessor is writing data to and reading data from the display driver.
Contact an authorized service engineer if the problem cannot be resolved.
# Resolve external function test error code 4 - Keyboard error
There is a problem with the keyboard.
To define which error is detected on the keyboard controller, you can perform a
specific keyboard controller test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o The graphics display shows the Medec logo and all leds are off
Neptune ventilator
38
Technical manual
15
2
1
3
12
13
4
5
6
7
14
8
9
10
11
o Press the volume mode key (1).
The leds tidal volume (2) and minute volume (3) should come on.
Release the key. The leds should be off.
o Press the CMV key (5).
The led CMV (4) should be on.
Release the key. The leds should be off.
o Press the PCV key (7).
The led PCV (6) should be on.
Release the key. The leds should be off.
o Press the Manual key (9).
The led Manual (8) should be on.
Release the key. The leds should be off.
o Press the Standby key (11).
The led Standby (10) should be on.
Release the key. The leds should be off.
o Press the Silent key (13).
The led LCD (12) should be on.
Release the key. The leds should be off.
o Press the rotary knob (14).
The led battery (15) should be on.
Release the key. The leds should be off.
Neptune ventilator
39
Technical manual
•
Microprocessor communication test
To perform a microprocessor communication test, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
o Change the dipswitch setting of the master board with a small
screwdriver to
o Turn the ventilator on.
o If no errors found, the green LED is blinking. If an error is detected,
the error is indicated on the red error LED’s and the green LED is off.
The red LED’s indicating the numbers of error’s detected (binary
number between 1 and 7).
•
LED indicator test
To test the error LED indicators, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o The error LEDs are blinking one by one
Neptune ventilator
40
Technical manual
•
Showing a test pattern on the graphics display
To test the display driver and/or graphics display, you can show a test pattern on
the graphics display. Perform the following instructions:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display shows a test pattern
Neptune ventilator
41
Technical manual
•
Alarm buzzer test
To test the buzzer, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o In the FiO2 display (1) appears a counter from 1 to 5
The audio volume of the buzzer changes with each value
Neptune ventilator
42
Technical manual
•
LCD contrast test
To test the buzzer, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o In the FiO2 display (1) appears a counter from 1 to 5
The LCD contrast changes with each value
Neptune ventilator
43
Technical manual
•
Barograph test
To test the barograph, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o First test: the green leds light up from left to right in the airway
pressure window.
o Second test: the red leds light up from left to right in the airway
pressure window.
o Third test: both green and red leds light up from left to right in the
airway pressure window.
Neptune ventilator
44
Technical manual
•
Keyboard test
To test the barograph, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
15
2
1
3
12
13
4
5
6
7
14
8
9
10
11
o Press the volume mode key (1).
The leds tidal volume (2) and minute volume (3) should come on.
Release the key. The leds should be off.
o Press the CMV key (5).
The led CMV (4) should be on.
Release the key. The leds should be off.
o Press the PCV key (7).
The led PCV (6) should be on.
Release the key. The leds should be off.
Neptune ventilator
45
Technical manual
o Press the Manual key (9).
The led Manual (8) should be on.
Release the key. The leds should be off.
o Press the Standby key (11).
The led Standby (10) should be on.
Release the key. The leds should be off.
o Press the Silent key (13).
The led LCD (12) should be on.
Release the key. The leds should be off.
o Press the rotary knob (14).
The led battery (15) should be on.
Release the key. The leds should be off.
Neptune ventilator
46
Technical manual
•
Keyboard leds test
To test the keyboard leds, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o First test: the leds light up one by one
Neptune ventilator
47
Technical manual
o Second test: the leds light up in the following way:
1° Standby (1)
2° Standby (1), High pressure (2)
3° Standby (1), High pressure (2), Low pressure (3)
4° Standby (1), High pressure (2), Low pressure (3), Apnea alarm (4)
5° Standby (1), High pressure (2), Low pressure (3), Apnea alarm (4),
Trigger (5)
6° Standby (1), High pressure (2), Low pressure (3), Apnea alarm (4),
Trigger (5) and LCD led (6)
2
3
4
5
6
1
Neptune ventilator
48
Technical manual
•
7 segment display test
To test the 7 segment displays, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o First test: each segment lights up once. When a digit is done, the
decimal point segment is on.
Neptune ventilator
49
Technical manual
o Second test: on each display a counter from 0 to F is displayed
Neptune ventilator
50
Technical manual
•
O2 sensor test
To test the 7 segment displays, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
In the FiO2 display appears O2.
When no sensor attached, the value should be around 7FFFF
When shorted, the value should be around 000000
A good sensor, should have a value around 3F8000
Neptune ventilator
51
Technical manual
•
Encoder test
To test the encoder, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o The displays are blank
Turn the knob to the right. In the peep display appears a number. This
number increments with each click of the encoder.
Turn the knob to the right. This number decrements with each click of
the encoder
Note:
Make sure that in normal operating mode of the Neptune ventilator the
dipswitches of the MMI board, master board and pneumatic board are put
in the following position:
1
Neptune ventilator
2
3
52
4
5
Technical manual
1.4.5 Graphics display
The LCD display is quarter-VGA display. It has a contrast adjustment.
The graphics display excels in a wide range of ambient lighting environments while
effectively eliminating the blooming.
The display consists of a cristal panel and control electronics.
Note:
The display generates voltages capable of causing personal injury (high
voltage up to -24 VDC). Do not touch the display electronics during
operation.
The display is connected to connector P5 and P6 of the MMI board.
After switching the ventilator on, the display will respond after a few seconds.
Neptune ventilator
53
Technical manual
1.5 O2 MEASUREMENT
1.5.1 General
The O2 measurement is integrated into the MMI board.
1.5.2 Operation
The oxygen measurement is done with an O2 fuel cell. The oxygen sensor function is
similar to a typical battery. The O2 fuel cell generates a small voltage that is linear
with the oxygen concentration. The output voltage of a new O2 fuel cell is about 15,0
± 2 mV at dry ambient air.
The voltage is converted to a digital value through the 24-bit ADC converter. U2
generates a reference voltage equal to 1,2V used by the ADC converter U1.
LED D1 is lit when the ADC converter is working properly.
•
O2 sensor test
To test the O2 sensor, perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1
2
3
4
5
o Turn the ventilator on
o The graphics display continuously shows the Medec logo
o The display fields plateau, mean and peep are showing a value
When no sensor attached, the value should be around 7FFFF
When shorted, the value should be around 000000
A good sensor should have a value around 3F8000
Neptune ventilator
54
Technical manual
1.5.3 O2 Measurement specifications
•
•
•
Ambient air calibration
Minimum sensor input voltage:
± 4,3 mV
Maximum sensor input voltage:
± 230 mV
100% O2 calibration
Minimum sensor input voltage:
Ambient air cal. voltage x 4
Maximum sensor input voltage:
1200 mV
Recommended calibration
Calibrate every 24 hours with ambient air and/or 100% O2.
Neptune ventilator
55
Technical manual
1.6 MASTER BOARD
1.6.1 Block diagram
The block diagram of the master board is represented on the following page.
The master board looks after the communication between the MMI board and the
pneumatic board. The master board contains a reprogrammable microprocessor
(reprogrammable by means of connector P3).
The real time clock keeps up the actual time and date. It contains also timer
information like the total working time of the ventilator, service time, etc.
The audible safety circuit contains a buzzer. The buzzer is driven by the
microprocessor and the reset signal. If an error is detected, the buzzer generates an
audible sound.
The master board is also provided with a RS-232 interface.
Neptune ventilator
56
Technical manual
Ram
memory
Programming
interface
(connector P3)
LED indicators
Real time
clock
microprocessor
audible safety
circuit
SPI communication with other boards
(connector P2)
RS-232
interface
RS-232 interface
(connector P4)
Master board
Block diagram master board
Neptune ventilator
57
Technical manual
1.6.2 Schematic diagram
The schematic diagram of the master board is represented on the following pages.
Neptune ventilator
58
Technical manual
2
VCC
C20
10nF
20
PA7(AD7)
PA6(AD6)
PA5(AD5)
PA4(AD4)
PA3(AD3)
PA2(AD2)
PA1(AD1)
PA0(AD0)
RESET
GND
1
3
A
GND
Vout
2
MAX6045AEUR-T
+
A15
A14
A13
A12
A11
A10
A9
A8
44
45
46
47
48
49
50
51
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
43 ALE
34 RD
33 WR
22
1 GND
RST
U14
VCC
ALE
RD
WR
GND
PEN
103L
VCC
C5
10µF
PF7(ADC7)
PF6(ADC6)
PF5(ADC5)
PF4(ADC4)
PF3(ADC3)
PF2(ADC2)
PF1(ADC1)
PF0(ADC0)
VCC
AREF
AGND
AVCC
GND
42
41
40
39
38
37
36
35
4
5
6
SS
VCC
1
PD0
2
PD1
3
PD2
GND
A15
4
5
6
GND
1
ALE11
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
2
3
4
5
6
7
8
9
A
B
C
E1
E2
E3
15
14
13
12
11
10
9
7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
74HC138
U3
A
B
C
E1
E2
E3
SS0
SS1
SS2
SS3
SS4
SS5
SS6
SS7
15
14
13
12
11
10
9
7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
CS0
CS1
CS2
CS3
CS4
CS5
CS6
CS7
1
2
3
A14
A15
A12
4
5
6
27
22
20
RD
CS1
11
12
13
15
16
17
18
19
A0
D0
A1
D1
A2
D2
A3
D3
A4
D4
A5
D5
A6
D6
A7
D7
A8
256
A9
A10
A11
A12
A13
A14
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
WR
OE
CE
C
RAM/ROM/FLASH
1
S5
0
1
S3
0
1
S1
0
WR
1
S6
0
1
S4
0
1
S2
0
A14
VCC
VCC VCC
LITHIUM 3V
1D
2D
3D
4D
5D
6D
7D
8D
19
18
17
16
15
14
13
12
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
A0
A1
A2
A3
A4
A5
A6
A7
PF4
PF5
PF6
PF7
R6
R7
R8
SW1
10
9
8
7
6
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
15
14
13
12
11
10
9
7
CS8
CS9
CS10
CS11
CS12
CS13
CS14
CS15
GND
R10
100K
PF0
R15
10K
74HC138
GND
R14
3K9
+
10µF
GND
PF1
+
GND
1
2
3
4
5
6
7
8
9
10
11
12
GND
VCC
24
23
22
21
20
19
18
17
16
15
14
13
U8
PWR
X1
X2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
VCC
SQW
Vbaux
RCLR
Vbat
IRQ
KS
RD
GND
WR
ALE
CS
DS1685
B
PE4
RD
WR
ALE
CS8
GND
C3
Title
GND
A4
Date:
File:
3
59
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
C4
10µF
Size
2
R12 R11
GND
DS-05 APEM
R9
100K
BAT1
32.768KHz
+24V
+12V
U5
X2
1
2
3
4
5
GND
Neptune ventilator
WR
OE
CE
D
U7
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
WR
C6
100nF
1
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A14
R5
OC
C
E1
E2
E3
11
12
13
15
16
17
18
19
RAM/ROM/FLASH
74HC138
U2
A
B
C
27
22
20
RD
CS0
74HC573
A8
A9
A10
A0
D0
A1
D1
A2
D2
A3
D3
A4
D4
A5
D5
A6
D6
A7
D7
A8
256
A9
A10
A11
A12
A13
A14
100K
54
55
56
57
58
59
60
61
52
62
63
64
53
PC7(A15)
PC6(A14)
PC5(A13)
PC4(A12)
PC3(A11)
PC2(A10)
PC1(A9)
PC0(A8)
VCC
PB7
PB6
PB5
PB4
MISO
MOSI
PB1
SS
U4
U6
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
100K
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
PE7(INTR7)
PE6(INTR6)
PE5(INTR5)
PE4(INTR4)
PE3(AC-)
PE2(AC+)
PE1(PDO/TXD)
PE0(PDI/RXD)
PD3 1
PD4 2
PD5 3
23
24
21
17
16
15
14
13
12
11
10
D4
100K
9
8
7
6
5
4
3
2
XTAL2
XTAL1
VCC
PD7(T2) PB7(OC2/PWM2)
PD6(T1)PB6(OC1B/PWM1B)
PD5
PB5(OC1A/PWM1A)
PD4(IC1) PB4(OC0/PWM0)
PD3(INT3)
PB3(MISO)
PD2(INT2)
PB2(MOSI)
PD1(INT1)
PB1(SCK)
PD0(INT0)
PB0(ss)
D3
R4
1K5
100K
B
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
TOSC2
TOSC1
ATmega103L
C
32
31
30
29
28
27
26
25
PB7
PB6
PB5
PB4
GND
U1
18
19
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
C2
33pF
R3
1K5
100K
4MHZ
C1
33pF
GND
D2
HLMP-1790
D1
X1
SPIBUS.sch
R2
1K5
VCC
100K
R1
1K5
D
VCC
HLMP-1700
SPI BUS
VCC
HLMP-1700
VCC
4
3
HLMP-1700
1
MASTER
Number
A
Revision
MASTER012000v1
15-Jan-2003
C:\DOCUMENT\..\master.sch
v1.0
Sheet 1 of 2
Drawn By: JP-KDP
4
Technical manual
1
2
VCC
VCC
D
U10
C24
100N
1
2
3
4
5
6
7
8
9
10
SS1
SS2
C25
100N
GND
SS3
SS4
VCC
C26
100N
C27
100N
VCC
1
2
3
4
5
6
7
8
9
10
SCK
C13
100N
SS0
GND
VCC
100K
SSSLV1A
SSSLV1B
SSSLV2A
SSSLV2B
15
14
13
12
11
OA3
OB3
OA4
OB4
GND
SSSLV3A
SSSLV3B
SSSLV4A
SSSLV4B
DE1/RE1
DR1
DR2
DE2/RE2
DE3/RE3
DR3
RO4
DI4
DE4
RE4
R13
MOSIA
R17
MISOA
R18
SCKA
R19
SSSLV0A
R24
SSSLV1A
R20
SSSLV2A
R21
SSSLV3A
R22
SSSLV4A
OA1
OB1
OA2
OB2
OA3
OB3
OA4
OB4
GND
20
19
18
17
MISOA
MISOB
MOSIA
MOSIB
15
14
13
12
11
SCKA
SCKB
SSSLV0A
SSSLV0B
MOSIA
MISOA
SCKA
SSSLV0A
SSSLV1A
SSSLV2A
SSSLV3A
SSSLV4A
VCC
C14
100N
C15
100N
2
1
PMOSI
RPE0
5
3
RST
GND +12V
D7
VCC
1N4148
D6
BUZ1
PMISO
TPE1
11
10
9
6
GND
AX
AY
O/IA
BX
BY
O/IB
CX
CY
5k6
5k6
GND
O/IC
14
PB1
15
PE1
4
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
SSSLV0B
+ C21
22µF
SSSLV1B
SSSLV2B
GND
+12V
SSSLV3B
SSSLV4B
+ C22
22µF
1
4
GND VCC
VCC
GND
PE0
RST
2
PSCK
PMISO
INH
3
RST MR
max811L
A
B
C
C7
100nF
GND
C18
100N
GND
C19
100N
GND
+24V
MOSIB
MISOB
SCKB
SSSLV0B
SSSLV1B
SSSLV2B
SSSLV3B
SSSLV4B
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
GND
+12V
GND
P4
1
3
5
7
9
GND
PMOSI
P3
VCC
2
4
6
8
10
GND
U13
13
8
11
10
1
3
2
TPE1
PE2
+ C8
R1 IN
R2 IN
T1 IN
T2 IN
C1+
C1 V+
0.1µF 16V
HEADER 5X2
2
4
6
8
10
HEADER 5X2
PE3
RPE0
12
9
14
7
4
5
6
R1 OUT
R2 OUT
T1 OUT
T2 OUT
C2+
C2 V-
A
C10
C11
VCC
Q3
R27
Q2
C28
100N
BS170M
GND
GND
1
Neptune ventilator
C29
100N
RST
BS170M
GND
BS170M
R26
100K
PD7
Title
1K
Size
A4
GND
+
C9
0.1µF 16V
+
0.1µF 16V
Q1
B
MAX202ECWE
GND
74HC4053
R25
10K 1N4148
D
VCC
HEADER 18X2
GND
1
3
5
7
9
GND
C
HEADER 18X2
U12
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
GND
VCC
SCKB
+
B
12
13
5k6
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
U11
PSCK
SCK
5k6
P2
C17
100N
GND
5K6
R23
VCC
C16
100N
5k6
MISOB
5k6
GND
SP495
P1
MOSIB
5k6
GND
U9
GND
MISO
MOSI
C12
100N
20
19
18
17
OA1
OB1
OA2
OB2
SP495
GND
C
DE1/RE1
DR1
DR2
DE2/RE2
DE3/RE3
DR3
RO4
DI4
DE4
RE4
4
3
GND
GND
Date:
File:
2
3
60
0.1µF 16V
GND
A
SPIBUS
Number
Revision
MAS012000v1
9-Jan-2003
C:\DOCUMENT\..\SPIBUS.sch
v1.0
Sheet 2 of 2
Drawn By: JP-KDP
4
Technical manual
1.6.3 Build-in test software
After turning the ventilator on, the master board will test all his different functions.
During start-up the following tests are executed:
o Microprocessor internal functions tests:
ƒ
ƒ
ƒ
ƒ
ƒ
test internal program memory
test internal SRAM memory
test the timers
test EEPROM memory
test Watchdog
o Microprocessor external functions test
ƒ
ƒ
ƒ
test external SRAM memory
test external RS-232
test external real time clock
o Microprocessor communication test
ƒ
ƒ
test the communication between master board and display
board
test the communication between master board and pneumatic
board
When all these tests are executed successfully, the master board is ready to start
working. If an error occurred, the type of error is displayed on the LED indicators.
G
R
R
R
After start-up the LED indicators can show the following errors:
LED indicators
Type error
Device is working properly
G
R
R
R
Microprocessor internal function error
G
R
R
R
Microprocessor external function error
G
R
R
R
Communication error
G
R
Neptune ventilator
R
R
- 61 -
Technical manual
To determine the exact error on the master board, you have to perform a specific test
by using the build-in test software.
Note:
During executing a specific test on the master board there will be no
communication between the master board and the display board. The
MMI board will interpret this as a communication error and a
communication error code is displayed and also an alarm sound is
audible. This can be very annoying. To prevent this error put the MMI
board in internal test mode by setting dipswitch 1 high. See the MMI
board section in this manual for detailed instructions.
Note:
The pneumatic board will also detect a communication error during a
executing a specific test on the master board. Don’t pay any attention
to it in this situation.
•
Microprocessor internal function test
If a microprocessor internal error is detected, execute an internal function test as
follow:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the master board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o If no errors where found, all the red LED’s are off and the green LED
is blinking.
o If an error is detected, the error is indicated on the red error LED’s and
the green LED is off. The possible errors are illustrated in the table on
the next page:
Neptune ventilator
- 62 -
Technical manual
INTERNAL FUNCTION TEST ERROR CODES
Error LED’s
Error code
Description
G
G
G
R
R
R
R
R
R
R
R
G
R
R
R
R
G
R
R
G
R
R
Neptune ventilator
1
internal PROGRAM MEMORY error
2
Internal SRAM error
3
Internal TIMER error
4
Internal EEPROM error
5
Internal WATCHDOG error
6
Reserved
7
Reserved
R
R
R
NO ERRORS detected, test loop is running
R
G
G
0
R
R
R
R
- 63 -
Technical manual
# Resolve internal function test error code 4 – Internal EEPROM error
To fix error code 4 or internal EEPROM error follow the next steps:
o Turn the Neptune ventilator off.
o Change the dipswitch setting of the master board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o You will notice that all the LED indicators are blinking fast. This
means that the master board EEPROM settings are restored to the
factory settings.
o Turn the ventilator off
o Repeat the microprocessor internal functions test described on the
previous page. If the EEPROM error still remains contact an
authorized service engineer.
Note:
Restoring the master EEPROM settings will not affect the pneumatic
board EEPROM settings. Calibration of the ventilator is not needed in
this case.
Warning:
Try to resolve internal function error code 4 (EEPROM error)
with the instructions described above. For all other internal
function test errors contact an authorized service engineer.
Neptune ventilator
- 64 -
Technical manual
•
Microprocessor external function test
If a microprocessor external error is detected, execute an external function test as
follow:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the master board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o If no errors where found, all the red LED’s are off and the green LED
is blinking.
o If an error is detected, the error is indicated on the red error LED’s and
the green LED is off. The possible errors are illustrated in the table on
the next page:
Neptune ventilator
- 65 -
Technical manual
EXTERNAL FUNCTION TEST ERROR CODES
Error LED’s
Error code
Description
G
R
R
R
G
R
R
R
G
G
R
R
R
R
R
R
G
R
R
R
G
Note:
R
R
R
1
reserved
2
reserved
3
reserved
4
External REAL TIME CLOCK error
5
reserved
6
reserved
7
reserved
R
R
R
NO ERRORS detected, test running
R
G
G
0
R
R
The external function test is running continuously. When an error is
detected, the error is indicated on the LED indicators, and the external
function test is repeated. It’s not necessary to turn the ventilator on and
off to repeat the external function test.
Neptune ventilator
- 66 -
Technical manual
# Resolve external function test error code 4 – External real time clock error
There is a problem with the real time clock. Device U8 contains the actual time and
date and timer information. The microprocessor can send data or read data from
device U8. Device U8 is equipped with a very accurate crystal and a backup battery.
Contact an authorized service engineer if the problem cannot be resolved.
If the test is running correctly the buzzer is set on and off every second.
Communication test between master board and MMI board
To test the communication between the master board and the MMI board perform the
following test:
o Turn the Neptune ventilator off.
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the master board with a small
screwdriver to
1 2 3 4 5
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o If no errors found, the green LED is blinking. If an error is detected,
the error is indicated on the red error LED’s and the green LED is off.
The red LED’s indicating the numbers of error’s detected (binary
number between 1 and 7).
Neptune ventilator
- 67 -
Technical manual
Communication test between master board and pneumatic board
To test the communication between the master board and the pneumatic board
perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the master board with a small
screwdriver to
1 2 3 4 5
o Change the dipswitch setting of the pneumatic board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on.
o If no errors found, the green LED is blinking. If an error is detected,
the error is indicated on the red error LED’s and the green LED is off.
The red LED’s indicating the numbers of error’s detected (binary
number between 1 and 7).
•
LED indicator test
To test the error LED indicators perform the following test:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the MMI board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o The error LED’s are blinking one by one.
Neptune ventilator
- 68 -
Technical manual
1.6.4 Master board layout
Neptune ventilator
- 69 -
Technical manual
1.7 PNEUMATIC BOARD
1.7.1 Block diagram
The block diagram of the pneumatic board is represented on the following page.
The pneumatic board is provided with one microprocessor. The microprocessor is reprogrammable by means of connector P3.
The A/D converter converts the signal of the pressure transducer, the +12V valves
voltage and the +12V voltage to a digital value.
There are two valve driver IC’s that can drive each 8 valves. Each output is provided
with a green LED. You can see the valve state directly on the LED’s. Connectors P4
and P5 connecting the valve driver IC’s with the valves.
The pneumatic microprocessor receives settings from the MMI board. On the basis of
these settings and the signals from the transducers the microprocessor is calculating
all the parameters needed to drive the pneumatic valves.
The microprocessor must trigger the 12V safety circuit in a certain time. During a
microprocessor failure the +12V safety circuit will not be triggered and the +12V
voltage on the valves shuts off. The ventilator switches automatically over to MAN.
mode in this situation (because no valves are driven).
Neptune ventilator
- 70 -
Technical manual
Programming
interface
(connector P3)
RAM
memory
LED indicators
Connector P6
Connector P4
Connector P5
Input switches
LED Indicators
LED Indicators
Valve driver 1
Valve driver 2
12V
SAFTY
CIRCUIT
microprocessor
SPI communication with master board
(connector P2)
PTR1
Patient
pressure
PTR2
Peep valve
exp.pressure
PTR3
Patient flow
PTR4
freshgas
PTR5
Tank pressure
PTR6
Peep valve
insp. pressure
12v valve
12v
Pneumatic board
Block diagram pneumatic board
Neptune ventilator
- 71 -
Technical manual
A/D converter
1.7.2 Schematic diagram
The schematic diagram of the pneumatic board is represented on the following pages.
Neptune ventilator
- 72 -
Technical manual
1
2
4
3
R5
VALVES.sch
1K5
1K5
HLMP-1790
D1
D
PNEUSPI.sch
SENSORS.sch
D2
D3
HLMP-1700
R6
HLMP-1700
R7
HLMP-1700
RS485 DRIVER
R8
1K5
SENSORS
1K5
VCC
VALVES
D4
PB4
PB5
PB6
PB7
VCC
GND
C
C2
33pF
SW1
1
2
3
4
5
GND
U1
PD7
PD6
PD5
PD4
PD3
12V ON/OFF
VAL.CL
VAL.EN.
32
31
30
29
28
27
26
25
9
8
7
6
5
4
3
2
ADINT
B
PE1
PE0
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
VCC
100R
R16
C3
100N
A
54
55
56
57
58
59
60
61
52
62
63
64
53
GND 20
TOSC2
TOSC1
XTAL2
XTAL1
VCC
PD7(T2) PB7(OC2/PWM2)
PD6(T1)PB6(OC1B/PWM1B)
PD5
PB5(OC1A/PWM1A)
PD4(IC1) PB4(OC0/PWM0)
PD3(INT3)
PB3(MISO)
PD2(INT2)
PB2(MOSI)
PD1(INT1)
PB1(SCK)
PD0(INT0)
PB0(ss)
PE7(INTR7)
PE6(INTR6)
PE5(INTR5)
PE4(INTR4)
PE3(AC-)
PE2(AC+)
PE1(PDO/TXD)
PE0(PDI/RXD)
PC7(A15)
PC6(A14)
PC5(A13)
PC4(A12)
PC3(A11)
PC2(A10)
PC1(A9)
PC0(A8)
PF7(ADC7)
PF6(ADC6)
PF5(ADC5)
PF4(ADC4)
PF3(ADC3)
PF2(ADC2)
PF1(ADC1)
PF0(ADC0)
VCC
AREF
AGND
AVCC
GND
PA7(AD7)
PA6(AD6)
PA5(AD5)
PA4(AD4)
PA3(AD3)
PA2(AD2)
PA1(AD1)
PA0(AD0)
RESET
ALE
RD
WR
GND
PEN
ATMEGA103
GND
ATmega103L
18
19
23
24
21
17
16
15
14
13
12
11
10
VCC
PB7
PB6
PB5
PB4
MISO
MOSI
PB1
SS
42
41
40
39
38
37
36
35
A15
A14
A13
A12
A11
A10
A9
A8
44
45
46
47
48
49
50
51
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
GND
R2
R1
CS0
5
WR
6
10
9
8
7
6
PF4
PF5
PF6
PF7
VALSEL1
WR
8
CS1
9
10
VALSEL2
U6C
C
74HC02
DS-05 APEM
A15
A14
A13
1
2
8
A11
A10
A9
A8
9
74HC4075
U4B
3
4
5
U5
U4C
11
12
13
6
74HC4075
74HC4075
GND
ALE
1
11
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
2
3
4
5
6
7
8
9
U2
OC
C
U3
1D
1Q
2D
2Q
3D
3Q
4D
4Q
5D
5Q
6D
6Q
7D
7Q
74HC573
8D
8Q
19
18
17
16
15
14
13
12
A0
A1
A2
A3
A4
A5
A6
A7
A4
A5
A6
A7
A12
1
2
3
4
5
6
A
B
C
E1
E2
E3
74HC138
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
$100*
15
14
13
12
11
10
9
7
$107*
CS0
CS1
CS2
CS3
CS4
CS5
CS6
CS7
2
A15
1
3
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
B
WR
OE
CE
RAM/ROM/FLASH
74HC02
1
S3
0
1
S1
0
WR
WR
1
S4
0
1
S2
0
A14
A4
Date:
File:
A
PNEUMATIC
Number
Revision
PNEU012000v1
9-Jan-2003
C:\DOCUMENT\..\PNEUMATIC.sch
3
- 73 -
11
12
13
15
16
17
18
19
A0
D0
A1
D1
A2
D2
A3
D3
A4
D4
A5
D5
A6
D6
A7
D7
A8
256
A9
A10
A11
A12
A13
A14
A14
Size
2
27
22
20
RD
U6A
Title
RST
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
10
1 GND
Neptune ventilator
4
U4A
43 ALE
34 RD
33 WR
22
1
U6B
74HC02
100K
C1
33pF
R3
100K
R4
100K
6MHz
100K
X1
D
Sheet 1 of 4
Drawn By: JP-KDP
4
Technical manual
v1.0
1
2
4
3
R17
VCC
D
16
15
14
13
12
11
10
9
D
9
10
11
12
13
14
15
16
VCC
8*4K7
D5
GND
D8
D9
C23
C24
100nF
100nF
100nF 100nF
D10 D11 D12
GND
U10
22
CLEAR
OE
20
STROBE OUT1
19
IN1
OUT2
18
INT2
OUT3
17
INT3
OUT4
16
INT4
OUT5
15
INT5
OUT6
14
INT6
OUT7
MIC5801BN13
INT7
OUT8
12
INT8
COM
21
GND
VDD
MIC5801BN
P4
VAL.EN.
V1
V2
V3
V4
V5
V6
V7
V8
2
4
6
8
10
12
14
16
18
20
VCC
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
1
3
5
7
9
11
13
15
17
19
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
12v val.
4K7
9
10
11
12
13
14
15
16
8*4K7
Q1
A
GND
22
CLEAR
OE
20
STROBE OUT1
19
IN1
OUT2
18
INT2
OUT3
17
INT3
OUT4
16
INT4
OUT5
15
INT5
OUT6
14
INT6
OUT7
MIC5801BN13
INT7
OUT8
12
INT8
COM
21
GND
VDD
MIC5801BN
2
4
6
8
10
12
14
16
18
20
VCC
RFP30P05
4
1
3
5
7
9
11
13
15
17
19
Q2
R9
BS170M
U8B
Q
CLR
B
A
Q
Cext
12
RCext
5
GND
14
C20
R20
CLR
B
A
Q
Cext
15
RCext
11
10
9
6
GND
7
74HC123
GND
Title
Size
VALVES
Number
A
Revision
PNEU012000v1
9-Jan-2003
C:\DOCUMENT\..\VALVES.sch
3
- 74 -
Q
VCC
100K
74HC123
HEADER 10X2
2
3
2
1
330N
A4
Neptune ventilator
GND
U8A
Date:
File:
1
C
RD
CS2
B
22K
13
P5
VAL.EN.
V9
V10
V11
V12
V13
V14
V15
V16
1
19
R30
10K
U9
HEADER 5X2
+12v
D13 D14 D15 D16 D17 D18 D19 D20
1
2
3
4
5
6
7
8
9
10
11
2
4
6
8
10
R29
D21
8
7
6
5
4
3
2
1
VAL.CL
VALSEL2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
1
3
5
7
9
74HC541
R18
B
P6
2
3
4
5
6
7
8
9
D1
D2
D3
D4
D5
D6
D7
D8
E1
E2
HEADER 10X2
GND
U7
18
17
16
15
14
13
12
11
RST
1
2
3
4
5
6
7
8
9
10
11
D7
C22
12V ON/OFF
C
VAL.CL
VALSEL1
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
D6
R19
8*100K
C21
1
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1
Sheet 2 of 4
Drawn By: JP-KDP
4
Technical manual
v1.0
1
2
PATIENT PRESSURE
4
3
PEEP VALVE EXP. PRESSURE
PATIENT FLOW
FRESH GAS FLOW
TANK PRESSURE
SM5652-015-G-3-L
CH0
C34
100N
C45
100N 100N
11
R13
5
1
2
VO-Vexc
VO+
+Vexc
3
4
PTR3
R14
100N
100N
MAX197
A
R31
10
47µF
C27
0.01µF
CH7
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
2
U17
3
5
2
C
PTR5
C33
R15
R24
10K
12
13
14
15
16
4
8
9
6
7
3
Vref COM vVref BG
Vref 2.5
Vref 5
Vo
Vref 10
Vref Out
RG SENSE
RG
V+in IAref
V-in
1
AGND
C8
100N
INA125
v+
4
C11
100N 100N
VO-Vexc
VO+
+Vexc
3
4
B
AGND
10
11
C49
100N
5
2
PTR6
SM5652-015-G-3-L
AGND
Title
A4
Date:
File:
2
Neptune ventilator
AGND
AGND
Size
1
sleep
7
12v val.
R22
100K
AGND
VCC
2
OPA237
22µH
R23
10K
11
+12v SENSORS
U23
6
L1
C28 +
AGND
10
100N
+12v
22µF/35v
47µF
CH6
3
PEEP VALVE INSP. PRESSURE
RES1
MAX197
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
C18
100N
+
CS3
WR
RD
A0
100pF
C26
AGND
U11
1
28
CLK
DGND
2
27
CS
VDD
3
26
WR
REF
4
25
RD
REFADJ
5
24
HBEN
INT
6
23
SHDN
CH7
7
22
D7
CH6
8
21
D6
CH5
9
20
D5
CH4
10
19
D4
CH3
11
18
D3/D11 CH2
12
17
D2/D10 CH1
13
16
D1/D9
CH0
14
15
D0/D8 AGND
AGND
R21
100K
C30
+
B
AGND
C29
+12v SENSORS
100N
SM5612-030-G-3-L
C46
+12v
AGND
VO-Vexc
VO+
+Vexc
3
4
D
C19
INA125
Vref COM vVref BG
Vref 2.5
Vref 5
Vo
Vref 10
Vref Out
RG SENSE
RG
V+in IAref
V-in
1
PTR4
100N
AGND
C48
2
SM5652-003-D-3-L
C43
VCC AGND
C47
100N 100N
11
5
SM5652-003-D-3-L
C40
ADINT
12
13
14
15
16
4
8
9
6
7
AGND
4
AGND
10
SM5652-015-G-3-L
C37
U16
3
v+
sleep
v+
4
C44
100N
3
Vref COM vVref BG
Vref 2.5
Vref 5
Vo
Vref 10
Vref Out
RG SENSE
RG
V+in IAref
V-in
1
2
1
2
VO-Vexc
VO+
+Vexc
3
4
PTR2
7
7
1
2
sleep
v+
4
R12
5
AGND
10
12
13
14
15
16
4
8
9
6
7
2
OPA237
CH4
PTR1
100N 100N
11
AGND
6
CH5
VO-Vexc
VO+
+Vexc
3
4
1
2
1
1
2
C42
3
C7
INA125
2
R11
C41
100N
3
Vref COM vVref BG
Vref 2.5
Vref 5
Vo
Vref 10
Vref Out
RG SENSE
RG
V+in IAref
V-in
U15
sleep
100N 100N
11
5
AGND
10
12
13
14
15
16
4
8
9
6
7
U22
2
OPA237
RES1
C39
AGND
6
1
VO-Vexc
VO+
+Vexc
3
4
C38
100N
3
Vref COM vVref BG
Vref 2.5
Vref 5
Vo
Vref 10
Vref Out
RG SENSE
RG
V+in IAref
V-in
3
C6
INA125
CH3
1
C
AGND
10
12
13
14
15
16
4
8
9
6
7
U14
RES1
RES1
R10
AGND
U21
2
OPA237
CH2
100N 100N
3
6
C5
INA125
RES1
C36
100N
3
Vref COM vVref BG
Vref 2.5
Vref 5
Vo
Vref 10
Vref Out
RG SENSE
RG
V+in IAref
V-in
U13
CH1
C35
12
13
14
15
16
4
8
9
6
7
U20
2
OPA237
4
4
AGND
6
C4
RES1
3
INA125
sleep
U12
v+
1
2
U19
2
OPA237
v+
6
sleep
U18
D
7
7
7
+12v SENSORS
Revision
PNEU012000v1
9-Jan-2003
C:\DOCUMENT\..\SENSORS.sch
3
- 75 -
A
SENSORS
Number
Sheet 3 of 4
Drawn By: JP-KDP
4
Technical manual
v1.0
1
2
5
U27D
10
74HC00
12
8
74HC00
GND
11
13
D
74HC00
GND
P1
GND
MOSIA R25
MISOA R26
SCKA R27
SSSLV0A R28
1
5K6
SCKB
5K6
SSSLV0B
74HC00
C
1
2
3
4
5
6
7
8
9
10
MISO
MOSI
SCK
SS
DE1/RE1
DR1
DR2
DE2/RE2
DE3/RE3
DR3
RO4
DI4
DE4
RE4
SP495
OA1
OB1
OA2
OB2
OA3
OB3
OA4
OB4
GND
20
19
18
17
MISOA
MISOB
MOSIA
MOSIB
15
14
13
12
11
SCKA
SCKB
SSSLV0A
SSSLV0B
P2
MOSIA
MISOA
SCKA
SSSLV0A
U24
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
GND
GND
GND
MOSIB
MISOB
SCKB
SSSLV0B
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
PSCK
SCK
12
13
PMISO
2
1
5
3
11
10
9
RST
6
GND
C9
100N
U25
AX
AY
O/IA
BX
BY
O/IB
CX
CY
O/IC
14
PB1
15
PE1
4
+ C32
GND
C10
100N
GND
U26
GND VCC
4
RST
2
RST MR
C15
100N
max811L
A
B
C
PSCK
PMISO
INH
C25
100nF
GND
GND
+12V
C
GND
C13
100N
C12
100N
1
3
5
7
9
C16
100N
C17
100N
B
C14
100N
GND
VCC
P3
3
VCC
VCC
VCC
GND
PE0
GND
HEADER 18X2
PMOSI
1
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
GND
HEADER 18X2
B
PMOSI
+ C31
GND
+12V
3
2
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
GND
VCC
MISOB
5K6
U27A
SS
MOSIB
5K6
22µF/35v
D
U27C
9
6
22µF
U27B
4
4
3
2
4
6
8
10
HEADER 5X2
GND
74HC4053
Title
A
Size
A4
Date:
File:
1
2
Neptune ventilator
PNEUMATIC SPI
Number
PNEU012000v1
9-Jan-2003
C:\DOCUMENT\..\PNEUSPI.sch
3
- 76 -
Sheet 4 of 4
Drawn By: JP-KDP
4
Technical manual
A
Revision
v1.0
1.7.3 Build-in test software
•
Start-up test
After turning the ventilator on, the pneumatic board will test all his different
functions. During start-up the following tests are executed:
o Microprocessor internal functions tests:
ƒ
ƒ
ƒ
ƒ
ƒ
test internal program memory
test internal SRAM memory
test the timers
test EEPROM memory
test Watchdog
o Microprocessor external functions test
ƒ
ƒ
ƒ
test external SRAM memory
test external 12V safety valve
test external A/D converter
o Microprocessor communication test
ƒ
test the communication between pneumatic board and master
board
When all these tests are executed successfully, the MMI board is ready to start
working. If an error occurred, the type of error is displayed on the LED indicators.
G
R
R
R
After start-up the LED indicators can show the following errors:
LED indicators
Type error
Device is working properly
G
R
R
R
Microprocessor internal function error
G
R
R
R
Microprocessor external function error
G
R
R
R
G
R
R
R
Communication error
Neptune ventilator
77
Technical manual
To determine the exact error on the pneumatic board, you have to perform a specific
test by using the build-in test software.
Note:
During executing a specific test on the pneumatic board there will be
no communication between the master board and the pneumatic board.
The master board will interpret this as a communication error and a
continuous beep is audible. This can be very annoying. To prevent this
error put the master board in internal test mode by setting dipswitch 1
high. See the master board section later in this manual for detailed
instructions.
Note:
The MMI board will also detect a communication error during a
executing a specific test on the pneumatic board. To prevent this error
put the MMI board in internal test mode by setting dipswitch 1 high.
See the MMI board section in this manual for detailed instructions.
•
Microprocessor internal function test
If a microprocessor internal error is detected, execute an internal function test as
follow:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the pneumatic board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o If no errors where found, all the red LED’s are off and the green LED
is blinking.
o If an error is detected, the error is indicated on the red error LED’s and
the green LED is off. The possible errors are illustrated in the table on
the next page:
Neptune ventilator
78
Technical manual
INTERNAL FUNCTION TEST ERROR CODES
Error LED’s
Error code
Description
G
G
G
R
R
R
R
R
R
R
R
G
R
R
R
R
G
R
R
G
R
R
Neptune ventilator
1
internal PROGRAM MEMORY error
2
Internal SRAM error
3
Internal TIMER error
4
Internal EEPROM error
5
Internal WATCHDOG error
6
Reserved
7
Reserved
R
R
R
NO ERRORS detected, test loop is running
R
G
G
0
R
R
R
R
79
Technical manual
# Resolve internal function test error code 4 – Internal EEPROM error
To fix error code 4 or internal EEPROM error follow the next steps:
o Turn the Neptune ventilator off.
o Change the dipswitch setting of the pneumatic board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o You will notice that all the LED indicators are blinking fast. This
means that the pneumatic board EEPROM settings are reset.
Turn the ventilator off
o Repeat the microprocessor internal functions test described on the
previous page. If the EEPROM error still remains contact an
authorized service engineer.
Warning:
Reset from the pneumatic board EEPROM settings will AFFECT
the calibration parameters. Recalibration of the ventilator is
necessary in this case. Refer to the maintenance and calibration
procedure described later in this manual!
Neptune ventilator
80
Technical manual
•
Microprocessor external function test
If a microprocessor external error is detected, execute an external function test as
follow:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the pneumatic board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o If no errors where found, all the red LED’s are off and the green LED
is blinking.
o If an error is detected, the error is indicated on the red error LED’s and
the green LED is off. The possible errors are illustrated in the table on
the next page:
Neptune ventilator
81
Technical manual
EXTERNAL FUNCTION TEST ERROR CODES
Error LED’s
Error code
Description
G
R
R
R
G
R
R
R
G
G
R
R
R
R
R
R
G
R
R
R
G
Note:
R
R
R
1
reserved
2
External SRAM error
3
reserved
4
reserved
5
reserved
6
reserved
7
reserved
R
R
R
NO ERRORS detected, test running
R
G
G
0
R
R
The external function test is running continuously. When an error is
detected, the error is indicated on the LED indicators, and the external
function test is repeated. It’s not necessary to turn the ventilator on and
off to repeat the external function test.
Neptune ventilator
82
Technical manual
# Resolve external function test error code 2 – External SRAM error
There is a problem with the external SRAM memory. The external SRAM memory is
located on socket U5 on the pneumatic board. The microprocessor is reading data
from and writing data to the external SRAM memory.
Contact an authorized service engineer if the problem cannot be resolved.
•
Pneumatic function test
You can test all the pneumatic functions of the pneumatic board as follow:
o Turn the Neptune ventilator off
o Remove the upper cover plate at the back of the Neptune.
o Change the dipswitch setting of the pneumatic board with a small
screwdriver to
1 2 3 4 5
o Turn the ventilator on
o If no errors where found, all the red LED’s are off and the green LED
is blinking. Each valve of each valve driver is driven one by one.
o If an error is detected, the error is indicated on the red error LED’s and
the green LED is off. The possible errors are illustrated in the table on
the next page:
Neptune ventilator
83
Technical manual
PNEUMATIC FUNCTION TEST ERROR CODES
Error LED’s
Error code
Description
G
R
R
R
G
R
R
R
G
G
R
R
R
R
R
R
G
R
R
R
G
R
R
R
Neptune ventilator
1
Not able to start A/D converter
2
A/D converter busy
3
All A/D converter readings = $FFF
4
All A/D converter readings = $000
5
Not able to switch 12V safety circuit
OFF within 20 ms
6
Not able to switch 12V safety circuit
ON within 20 ms
7
No +12V input or +12V input too low
R
R
R
NO ERRORS detected, test running
R
G
G
0
R
R
84
Technical manual
1.7.4 Pneumatic board layout
Neptune ventilator
85
Technical manual
2. PNEUMATIC SYSTEM
2.1 PNEUMATIC DIAGRAM
The pneumatic diagram of the Neptune ventilator is represented on the next page.
Neptune ventilator
86
Technical manual
Neptune ventilator
87
Technical manual
2.2 MANUAL / SPONTANEOUS MODE (MAN)
If the Neptune is set to Man/Spont mode, the hand balloon is connected through the
patient breathing circuit and absorber to the patient. Squeezing the manual bag will
initiate an inspiration phase. The CO2 is removed by the soda lime in the canister.
Mixed gas from hand balloon and fresh gas flow goes directly to the patient. During
this phase, with the ventilator switched to Man/Spont mode, the patient pressure is
monitored and shown on the display.
If the patient pressure exceeds the upper limit pressure setting, an audible and visual
alarm is set. In this mode, the safety valve on the manual bag will guarantee the
maximum pressure level that can be set.
Man/Spont INSPIRATION
Neptune ventilator
88
Technical manual
Releasing the hand balloon will initiate an expiration phase. The patient can breath
out. At the end of the expiration, parameters like PEEP, frequency, PIP and tidal
volume are calculated and shown on the display.
Man/Spont EXPIRATION
Neptune ventilator
89
Technical manual
In Man/Spont mode when the patient pressure is above 20hPa level for 6sec the
change over valve will be activated to discharge the patient circuit via X6.when
patient pressure becomes equal or lower than 3hPa the change over valve is switched
OFF(*) for 2 sec to connect the hand balloon with absorber.
This will be done 3 times to lower pressure in the circuit and discharge manual
balloon.
(*) there is a time out of 5sec,if patient pressure is not equal or lower than 3hPa within
5 sec the change over valve will be switched OFF for 2 sec.
At same time an audible alarm and message is set on screen that the safety is active.
Anti-Volutrauma Safety
Neptune ventilator
90
Technical manual
2.3 CONTROLLED MANDATORY VENTILATION (CMV)
The system is built around the so-called "bag in bottle principle". The figure on the
next page represents the inspiration and expiration phase in CMV mode.
Tank T is filled with an initial pressure calculated by the pneumatic microprocessor.
The initial pressure is calculated on the basis of an algorithm comprising the
following parameters:
o
o
o
o
o
o
o
o
o
Fresh gas flow
Total circuit resistance
Patient compliance
Hose system compliance
Frequency
I/E ratio
Tidal volume
PEEP
Leakage
The contents of tank T flows into the bottle during inspiration, so that a pressure rise
will occur in it, and this will compress the bag.
The gas flows via the MAN/CMV valve, flow sensor and absorber to the patient.
During inspiration, the gas is routed through the soda lime.
The patient pressure is shown on the barograph or on the graphic.
During inspiration, the PEEP/upper limit pressure valve will contain the set upper
limit pressure. As soon as the patient pressure exceeds this limit, gas will be
evacuated from the patient circuit.
CMV INSPIRATION
Neptune ventilator
91
Technical manual
During expiration, the patient breathes out into the bag via the soda lime in the
absorber, the flow sensor and the MAN/CMV valve. The bottle venting valve is open,
causing the pressure in the bottle to become equal to atmospheric pressure.
If the fresh gas flow is higher than the consumption by the patient or leakage, as
appropriate, the system would become overfilled. This is prevented by the evacuation
of the surplus gas via the PEEP/upper limit valve (X6).
CMV EXPIRATION
Neptune ventilator
92
Technical manual
2.4 PRESSURE CONTROLLED VENTILATION (PCV)
In PCV mode the ventilator has to deliver the set peak pressure.
At the start of inspiration the tank who is filled during last expiration is connected with
bottle. This gives a decelerating flow, high at the start that comes to zero when the peak
level is reached.
V7 and V8 are used to give extra flow to keep the pressure at same level.
For a smooth regulation activation from this valves is done in ‘PWM’ pulse wide
modulation .
V1,V2,V14,V15&V16 are used to open the bottle and keep the pressure at peak level.
During the inspiration time ,the electronics will measure the patient pressure. If the
pressure is not within limits a calculation is done to adjust the tank pressure setting for
the next inspiration.. If the patient pressure becomes higher than the set peak pressure
+5hPa/+5mbar, valve V13 will be set in expiration position, the amount of pressure that
is too much can escape via the evacuation. When the patient pressure is within limits,
valve V13 will be set in inspiration position.
Each time valve V13 switches during inspiration the pressure in reservoir upper limit
becomes lower.” The start pressure is 100hPa/100mbar”.
During the expiration the exhaled patient flow is measured and tidal volume is
calculated.
If the PEEP (positive end expiration pressure) is higher than the set PEEP +
20hPa/+20mbar, the ventilator goes in Man/Spont mode and an error message is shown
on display.
Neptune ventilator
93
Technical manual
PCV INSPIRATION
PCV EXPIRATION
Neptune ventilator
94
Technical manual
2.5 PEEP
During expiration and a PEEP is set, a certain pressure is set behind the PEEP
valve X6. This pressure is derived from the X6 back pressure during inspiration.
At the start op expiration valve V13 is set to expiration mode.
With a PEEP set, valve V9 is always on. Valve 10 is off for a certain time, during this
time the back pressure from valve X6 can escape rapidly, to create the best expiration
situation. Valve V10 is switched on after a certain time to load the PEEP reservoir with
pressure.
The time that valve V10 is switched on is calculated at the end of expiration, this time
will be shorter for higher PEEP level and longer for lower PEEP level.
PEEP regulation is the same for CMV and PCV mode.
2.6 Anti-barotrauma
The Max pressure allowed during inspiration CMV mode is the calculated peak pressure
+10hpa/ +10mbar
Calculated peak is calculated from last measured expired volume and peak pressure.
The min level is 30hPa / 30mbar if upper limit is higher.
When the upper limit alarm level is lower then the calculated safety, the upper limit
alarm level has priority.
Neptune ventilator
95
Technical manual
2.7 MECHANICAL CONSTRUCTION
2.7.1 Patient breathing unit
There are four main parts in the patient unit that need to be distinguished:
o
o
o
o
PEEP and upper limit pressure valve
MAN/CMV switching valve
Flow sensor
Latex free autoclavable bag
PEEP and upper limit
pressure valve
MAN/CMV
switching valve
Flow sensor
Neptune ventilator
96
Technical manual
Latex free autoclavable bag
● PEEP and upper limit pressure valve
Regulation of the PEEP and upper limit pressure is provided by the mushroom valve (C)
which operates a plastic valve (D).
C
D
During inspiration, the value set for the upper limit pressure is applied to the mushroom
valve causing this to expand and thus exert the same pressure on the plastic valve.
When a pressure higher than the upper limit pressure is built up on the underside, the
valve will be lifted and gas is able to escape via the evacuation. The plastic valve
ensures that the pressure is uniformly distributed so that the noise made by the escaping
air is attenuated.
During expiration, the value set for the PEEP is applied to the mushroom valve. The
exhalation curve thus approaches the PEEP gradually. There are no sudden transitions,
which results in a “smoothed shape”.
The upper limit pressure thus ensures that the patient is not exposed to too high
pressures during inspiration, while the PEEP ensures - when expiration occurs - that
sufficient pressure remains in the lung. This is only applicable in CMV and PCV mode.
Neptune ventilator
97
Technical manual
● MAN/CMV switching valve
The changeover valve is always in the unpowered state in the Man/Spont mode. The
valve (G) is in fact pressed up by a spring so that the absorber is connected directly to
the hand balloon. If the ventilator mode is changed to CMV or PCV, pressure reaches
the switching diaphragm via connection E. The valve is thereby pressed down and the
hand balloon shut off. When this occurs, the connection to the bag (F) is opened so that
the absorber is now connected to the bag.
E
F
G
Neptune ventilator
98
Technical manual
● Flow sensor
The flow sensor is a derivative, developed by Medec Benelux NV, of the well- known
Fleisch principle. To ensure laminar flow, special perforated rings are fitted. The flow
sensor can measure flow up to 96 l/min.
Differential pressure (∆P) is measured across the restriction by means of connections A
and B, which are connected to transducer TRX3.
● Latex free autoclavable bag
The bag is connected to the connection F intended for this purpose. It should be clearly
understood that in the unpowered state (i.e. in the Man/Spont mode), the bag is not used.
The bag is a special balloon and therefore cannot be replaced with a different type of
balloon.
Warning: Medec Benelux NV can only guarantee correct ventilator operation
with the same type of balloon.
Neptune ventilator
99
Technical manual
2.7.2 Bottle
The feed-through plate of the bottle is provided with five connections. This plate ensures
a gas-tight connection between the bottle and the patient breathing unit. This makes the
patient breathing unit easy to remove and to clean.
A
B
C
E
D
A.
B.
C.
D.
E.
MAN/CMV switching valve.
PEEP and upper limit pressure valve.
Outlet for gas evacuation from the mushroom valve.
Measurement point, flow sensor positive.
Measurement point, flow sensor negative and patient pressure.
The bag is inserted in the bottle after which the patient breathing unit is attached to the
bottle by means of the whale clip.
The bottle is manufactured from aluminum. On the back of the bottle, there are two
valves:
o The bottle safety valve located on the top is adjusted to
120hPa/120mbar. So the pressure in the bottle (and thus also in the
patients lung) never exceeds this value.
o The bottle venting valve located on the bottom ensures that during
inspiration, the bottle is shut off from the outside air so that the bag can
be compressed. During expiration, this valve ensures that the bottle is
vented, so that the bag can be filled again with the expired gas from the
patient.
Neptune ventilator
100
Technical manual
bottle venting valve
V13
X3
V7
V9
V6
V5
V8
X2
V12
V1
V2 V3
V14 V11
V15 V10
V16
V9
bottle safety valve
Neptune ventilator
101
Technical manual
2.7.3 Supply tank
The supply tank T (contents = 1,2 liter) provides the inspiration stroke volume.
The tank is located around the bottle.
The tank can be filled with the use of two low flow valves or one high flow valve.
There’s another valve provided to connect the tank with the bottle.
The supply tank T
Bottle
Neptune ventilator
102
Technical manual
2.7.4 Solenoid valves
The solenoid valves are special maintenance-free low-power valves. Because of the
special design, in which there is no sliding core but a corrosion-resistant metal
diaphragm, the valve processes a number of unique properties.
The ring which connects the coil and the valve housing may be unscrewed one turn in
order to attend to the electrical connections. Never unscrew the ring entirely, to prevent
vital parts being lost or damaged.
Note:
Never change the order of diaphragm and spacer ring, since these are
specially calibrated.
Neptune ventilator
103
Technical manual
3. MAINTENANCE AND CALIBRATION
The aim of the maintenance and calibration procedure is to ensure proper and safe
working of the Neptune ventilator. It must be performed by a qualified service engineer
every 6 months. Always recalibrate the ventilator and execute a leaktest after replacing a
component.
3.1 VISUAL INSPECTION
Remove the cover plate of the Neptune ventilator.
•
Electronic system
1 Ensure that all the boards of the extendable system set are mounted
correctly.
1 Check that all electrical connectors are latched.
1 Check all keyboard board switches for proper working
1 Check control knob switch and rotation for proper working
•
Pneumatic
1 Make sure that all tubes are properly connected and none are kinked or
pinched.
1 Check the clear tubing for signs of water. If any is detected, replace the
tubing or blow out the water by means of compressed air.
1 Check the air input water trap. Any presence of water must be
removed by pressing the bottom pin of the water trap. Make sure that
no water is flowing away into the ventilator.
1 Check the patient breathing system, the absorber and all external
tubing.
Neptune ventilator
104
Technical manual
3.2 BATTERY BACKUP
The ventilator can work for at least 1 hour on battery when fully charged. Connect the
ventilator for a couple of hours to the AC mains supply to assure a fully charged battery.
Check the ventilator battery backup by means of the following instructions:
Connect the power cord to the AC mains inlet
Turn the AC mains switch at the back of the ventilator ON
Turn the ventilator ON
There is a mains plug drawn at the top of the display which means that
the ventilator is working on AC mains supply
o Set the ventilator to CMV mode
o Check the battery backup by pulling the mains plug
o There is a battery drawn at the top of the display which means that the
ventilator is working on battery
o
o
o
o
If the ventilator shuts off in less than 1 hour, replace the battery by a new one. We
recommend replacing the battery every 3 years. Always replace the battery with the
same type and ratings.
Note:
The battery does not require maintenance under normal
circumstances. Always replace with same type every three years.
Neptune ventilator
105
Technical manual
3.3 THE CALIBRATION MENU
Enter the calibration menu as follows:
o Turn the ventilator ON
o Go to the Info menu
o Press the buttons in the exact order as represented:
5
1
3
2
4
Neptune ventilator
106
Technical manual
The calibration menu looks as follows:
9
8
7
6
5
1
4
2
3
1. Control buttons: with these buttons you can change the calibration settings,
drive the +12 voltage of the valves, set valves on and off, etc.
2. Exit button: you can leave the calibration menu by pressing the exit button. The
changes made in the calibration menu are stored to the EEPROM memory of the
pneumatic board.
3. Input indicators: the input pressure switches, connected to connector P6 on the
pneumatic board, are indicated over here. INPUT1 is connected to the air input
pressure switch, INPUT2 is connected to the O2 input pressure switch and
INPUT6 is connected to the N2O input pressure switch.
INPUT3, INPUT4, INPUT5, INPUT7 and INPUT8 are not used.
4. Valve ON/OFF: you can set each valve individually ON and OFF.
5. +12V VALVES: you can turn the +12V voltage of the valves ON and OFF.
Make sure that you set the +12V VALVES voltage on when you are testing each
valve individually. The ADC reading value is the value that the analog / digital
converter (ADC), located on the pneumatic board, indicates during converting
the +12V VALVES voltage to a digital value.
6. +12V SUPPLY: over here you can see a read-out of the digital value of the
+12V supply generated by the ADC converter. The +12V supply must always be
present after turning the ventilator on.
7. Selection beam: you can scroll the selection beam through the calibration menu
by rotating the control knob. The function of the control buttons at the left is
depending on the position of the selection beam.
8. Pressure transducers: each pressure transducer (TRX) can be calibrated
individually. TRX1 measures the airway pressure, TRX2 measures the PEEP
pressure, TRX3 measures the patient flow located in the patient breathing unit,
Neptune ventilator
107
Technical manual
TRX4 measures the fresh gas flow, TRX5 measures the tank pressure and TRX6
measures the upper limit pressure.
9. Service time: the service time is used to check the time between the last
maintenance and now. The service engineer has the possibility to zero this
service time after the maintenance and calibration procedure is executed. The
service timer is always running when the ventilator is on, regardless of standby
mode, manual mode, PCV or CMV mode.
Neptune ventilator
108
Technical manual
3.4 THE PRESSURE TRANSDUCERS
5 4
+ +3 1
6 - 2
TRX1
TRX2
TRX6
TRX5
TRX4
TRX3
Zeroing the pressure transducer TRX1, TRX2, TRX5 and TRX6
o
o
o
o
o
o
o
Disconnect patient breathing unit.
Close fresh gas.
Activate valve V5 to discharge the tank.
Move the selection beam to transducer TRX1.
Press the zero button.
Transducer TRX1 is now zeroed.
Repeat the 3 previous instructions for zeroing transducer TRX2, TRX5
and TRX6.
Zeroing the pressure transducer TRX3 and TRX4
Warning:
A zero and/or max. calibration of transducer TRX3 and/or TRX4
will erase the previous GAIN setting of the transducer. Make a note
of these GAIN setting (they can be used later) before starting any
zero or Max calibration transducer TRX3 and TRX4.
The pressure transducer TRX3 and TRX4 are used to measure flow. They measure the
differential pressure across the flow sensor. The pneumatic microprocessor uses a lookup table of the sensor to convert differential pressure to flow (liter/minute). There can be
a very small deviation between the look-up table and the flow sensor. You can eliminate
this deviation by adjusting the GAIN of the selected pressure transducer (only applicable
Neptune ventilator
109
Technical manual
on TRX3 and TRX4). You need a calibrated flow meter to compare the adjusted flow in
the calibration menu with the reference flow measured.
Warning:
A zero and/or max. calibration of transducer TRX3 and/or TRX4
will erase the previous GAIN setting of the transducer. Adjustment
of the GAIN is necessary to eliminate the deviation again.
o Be sure that the fresh gas is closed.
NOTE:
It is not necessary to open the ventilator to do the zeroing TRX3.
Be sure that patient breathing unit is disconnected.
o Move the selection beam to transducer TRX3.
o Press the zero button.
o Transducer TRX3 is now zeroed.
NOTE:
Set back the factory setting from TRX3 where you have made a note
from when only a zeroing from TRX3 is necessary.
When also a Max calibration will be done, restore of factory gain you
have to do after the Max calibration.
NOTE:
It is not necessary to open the ventilator to do the zeroing TRX4.
Be sure that patient breathing unit is disconnected.
o
o
o
o
o
NOTE:
Move the selection beam to transducer TRX4.
Set a fresh flow of 0,3 liters/min.
Press the zero button.
Close the fresh gas flow.
Transducer TRX4 is now zeroed.
Set back the factory setting from TRX4 where you have made a note
from when only a zeroing from TRX4 is necessary.
When also a Max calibration will be done, restore of factory gain you
have to do after the Max calibration.
Neptune ventilator
110
Technical manual
Maximum calibration of pressure transducer TRX1, TRX2 and TRX6
To perform the maximum calibration of the pressure transducers, you need a calibrated
pressure gauge, a T-piece, silicon tubes, syringe and a pneumatic test connector.
Connect in accordance with the next drawing:
Connect to pressure
transducer TRX by
means of pneumatic
test connector.
Calibration set
o Connect calibration set with transducer, see picture page 108 section
3.4 THE PRESSURE TRANSDUCERS
o Move the selection beam to transducer TRX1.
o Connect the calibration set to pressure transducer TRX1 by way of the
pneumatic test connector.
o Set a pressure of exactly 100hPa/100mbar by way of the syringe.
o Check the OUT2 value of TRX1. If equal to 100hPa/100mbar, go to the
next step. If not, perform a max. calibration by pressing the max. button.
The TRX1 OUT2 value is now equal to 100hPa/100mbar.
o Repeat the 4 previous instructions for the max. calibration of transducer
TRX2, and TRX6 in the same way.
Maximum calibration of pressure transducer TRX3
o Move the selection beam to transducer TRX3.
o Connect the calibration set to the positive port pressure transducer TRX3
see picture page 108.
o Set a pressure of exact 20hPa/20mbar by way of the syringe.
o Perform a maximum calibration of TRX3 by pressing the max. button.
▪
It’s possible to eliminate the deviation between the microprocessor lookup table and the flow sensor to create an extremely accurate measurement
of the flow. These steps are optional and can only performed when a
calibrated digital flowmeter is available:
Neptune ventilator
111
Technical manual
NOTE: When you don’t have a calibrated digital flowmeter, set back
the factory GAIN by pressing the gain+ or gain- button. Gain+ and
GAIN- are in steps of 5, set back the value that is nearest the factory
value where you have made a note from.
ƒ
ƒ
ƒ
ƒ
ƒ
Connect the digital flowmeter with one side to the left input
connector of the patient breathing unit.
Disconnect handset from right side patient breathing unit.
Connect other side from flowmeter with fresh gas front outlet.
Select fresh gas outlet front and push O2 flush.
Make sure that no valves are active.
Adjust the TRX3 OUT2 reading by manipulating the TRX3
GAIN. Change the GAIN by pressing the gain+ or gain- button.
The digital flowmeter value must be equal to the TRX3 OUT2
reading.
Maximum calibration of pressure transducer TRX4
o
o
o
o
Move the selection beam to transducer TRX4.
Connect the calibration set to pressure transducer TRX4 + port.
Set a pressure of exact 20hpa/20mbar by way of the syringe.
Perform a maximum calibration of TRX4 by pressing the max. button.
▪
It’s possible to eliminate the deviation between the microprocessor lookup table and the flow sensor to create an extremely accurate measurement
of the flow. These steps are optional and can only performed when an
calibrated digital flowmeter is available:
NOTE: When you don’t have a calibrated digital flowmeter, set back
the factory GAIN by pressing the gain+ or gain- button. Gain+ and
GAIN- are in steps of 5, set back the value that is nearest the factory
value where you have made a note from.
ƒ
ƒ
ƒ
ƒ
Neptune ventilator
Set a fresh gas flow of 10 liters/min air.
Make sure that no valves are active.
Connect one side of the digital flowmeter to the fresh gas outlet at
the front of the Neptune ventilator. Make sure the fresh gas front
output is selected. Leave the other side of the digital flowmeter
open.
Adjust the TRX4 OUT2 reading by manipulating the TRX4
GAIN. Change the GAIN by pressing the gain+ or gain- button.
The digital flowmeter value must be equal to the TRX4 OUT2
reading.
112
Technical manual
Maximum calibration of pressure transducer TRX5
o Place the pressure gauge between the tube that connects the pressure
transducer TRX5 with the tank.
o Make use of VALVE7 or VALVE8 to build a pressure of 2000hPa/2bar
in the tank.
o Regulate the pressure so the pressure gauge is indicating 2000hPa/2bar.
Check the OUT2 value of TRX5. If equal to approximately
2000hPa/2bar, go to the next step. If not, perform a max. calibration by
pressing the max. button. The TRX5 OUT2 value is now equal to
2000hPa/2bar
Checking the flow sensors readings
o Reconnect the absorber and the patient breathing system in a correct way.
o Set a fresh gas flow for example of 4 liters/min. The TRX3 OUT2 and
TRX4 OUT2 value must be a positive value. If one of these readings is
negative, you must check all tubes inside and outside the ventilator for
proper connection.
Warning: Leave the calibration menu by pressing the exit button. Now you’re
sure that all the changes made in the calibration menu are stored to
the EEPROM memory!
Neptune ventilator
113
Technical manual
3.5 THE PRESSURE REGULATORS
X7
X9
X6
X10
1
2
1. Air pressure regulator 3000hPa/3bar.
2. Air pressure regulator 500hPa/0.5bar.
Neptune ventilator
114
Technical manual
Check / calibrate AIR pressure regulator 3000hPa/3bar (1).
o For the adjustment of the AIR pressure regulators, you need a test patient
breathing unit.
Test patient breathing unit
o Make sure that the AIR input pressure is connected. Check the AIR
input pressure on the manometer located on the front. The pressure
must be higher than 3000hPa /3 bar.
o Remove the patient breathing unit.
o Connect the test patient breathing unit with the bottle.
o Connect a pressure gauge with the connector output G.
o Enter the calibration menu.
o Set VALVE6 ON. Don’t forget to set the +12V VALVES voltage
ON.
o Check the pressure gauge readings. If equal to approximately
3000hPa /3bar, go to the next step. Otherwise, unfasten the locking
ring of the AIR pressure regulator 1 and adjust the pressure so it’s
equal to 3000hPa/3 bar (+/- 100hPa /0.1bar) by means of rotating the
spindle. Fasten the locking ring again so that the adjustment spindle is
locked.
o Set VALVE6 OFF.
Neptune ventilator
115
Technical manual
Check / calibrate AIR pressure regulator 500hPa/0,5 bar (2).
o Make sure that the AIR input pressure is connected. Check the AIR
input pressure on the manometer located on the front. The pressure
must be higher than 3000hPa /3bar.
o Remove the patient breathing unit.
o Connect the test patient breathing unit with the bottle.
o Connect a pressure gauge with the connector output A.
o Enter the calibration menu.
o Set valve 13 and 11 ON. Don’t forget to set the +12V VALVES
voltage ON.
o Check the pressure gauge readings. If equal to approximately 500hPa
/0,5 bar go to the next step. Otherwise, unfasten the locking ring of
the AIR pressure regulator 2 and adjust the pressure so it’s equal to
500hPa /0,5bar (+/- 50hPa/0.5bar) by means of rotating the spindle.
Fasten the locking ring again so that the adjustment spindle is locked.
o Set valve 13 &11 OFF.
Neptune ventilator
116
Technical manual
3.6 THE FLOW REGULATORS
For the adjustment of the flow regulators you need the test patient breathing unit and a
flowmeter. Follow the next steps:
o
o
o
o
o
o
Remove the patient breathing unit.
Connect the test patient breathing unit with the bottle.
Connect a flowmeter with the connector output G.
Enter the calibration menu.
Set VALVE6 ON. Don’t forget to set the +12V VALVES voltage ON.
Check the flowmeter readings. If equal to 4 liters/min, go to the next step.
Otherwise, unfasten the locking ring of the flow regulator and adjust the
flow so it’s equal to 4 liters/min (+/-0.1lpm) by means of rotating the
spindle. Fasten the locking ring again so that the adjustment spindle is
locked.
Neptune ventilator
117
Technical manual
o
o
o
o
Set VALVE6 OFF.
Connect the flowmeter with the connector output A.
Set VALVE11 and VALVE13 ON.
Check the flowmeter readings. If equal to 1.6 liters/min, go to the next
step. Otherwise, unfasten the locking ring of the flow regulator and adjust
the flow so it’s equal to 1.6 liters/min (+/-0.1lpm) by means of rotating
the spindle. Fasten the locking ring again so that the adjustment spindle is
locked.
o Set all the valves OFF.
Neptune ventilator
118
Technical manual
3.7 O2 FLUSH
o Connect flowmeter to front outlet.
o Select the front fresh gas output.
o Push O2 flush button.
o Check the flowmeter readings. If equal to 35 liters/min, go to the next
step. Otherwise, unfasten the locking ring of the flow regulator and adjust
the flow so it’s equal to 35 liters/min (+/- 0.5lpm) by means of rotating
the spindle. Fasten the locking ring again so that the adjustment spindle is
locked.
Neptune ventilator
119
Technical manual
3.8 THE INPUT PRESSURE SWITCHES
To adjust the input pressure switches, follow the next steps:
o Regulate the pressure at the O2 NIST input connector until it’s equal to
2500hPa/2.5 bar (+/-100hPa /0.1bar).
o The input indicator I2 / O2 must be lit. If not, adjust the screw in the
middle of the pressure switch until the I2 / O2 indicator is lit.
o Let the O2 NIST input pressure decrease slowly.
The I2 / O2 indicator will go out with a pressure equal to 2200hPa
2.2bar (+/-200hPa/0.2bar). Otherwise, adjust the screw a little bit
more.
O2
Neptune ventilator
120
Technical manual
o Repeat the previous steps to adjust the input pressure switch of N2O.
N2O
Neptune ventilator
121
Technical manual
o Regulate the pressure at the AIR NIST input connector until it’s equal to
2 bar and set switch drive gas to AIR.
Set switch drive
gas to AIR.
o The input indicator DRV must be lit. If not, adjust the screw in the
middle of the drive gas pressure switch until the I1 / DRV indicator is lit.
DRV
Neptune ventilator
122
Technical manual
o Let the AIR NIST input pressure decrease slowly.
o The I1 / DRV indicator will go out with a pressure equal to
1700hPa/1.7bar (+/-170hPa/0.17bar). Otherwise, adjust the screw a little
bit more.
o Regulate the pressure at the AIR NIST input connector until it’s equal to
2000hPa /2 bar (+/-200hPa/0.2bar).
o The input indicator AIR must be lit. If not, adjust the screw in the
middle of the drive gas pressure switch until the I3 / AIR indicator is lit.
AIR
Neptune ventilator
123
Technical manual
o Let the AIR NIST input pressure decrease slowly.
The I3 / AIR indicator will go out with a pressure equal to 2200hPa
2bar (+/-200hPa/0.2bar). Otherwise, adjust the screw a little bit more.
Neptune ventilator
124
Technical manual
3.9 THE BOTTLE SAFETY VALVE
This section of the manual describes the procedure to check and adjust the bottle safety
valve:
Remove the patient breathing unit.
Connect the test patient breathing unit with the bottle.
Connect a calibrated pressure gauge to connector output C.
Connect connector output G to connector output D.
Set VALVE3 ON.
Set VALVE6 ON.
The pressure will increase until the bottle safety valves opens.
Check the pressure gauge readings. The valve relief pressure must be
equal to 120hPa/120mbar. If not, adjust the screw at the top of the bottle
safety valve so that the pressure is equal to 120hPa/120mbar.
o Leave the calibration menu by pressing the exit button.
o Reconnect the absorber and the patient breathing system in a correct way.
o
o
o
o
o
o
o
o
Neptune ventilator
125
Technical manual
3.10 Peep valve calibration
•
•
•
•
•
•
Connect tubes on patient circuit.
Cork patient Y
Go to calibration menu
Activate 12V valves.
Activate V3 & V6.
Set fresh gas flow 8Lpm
•
Turn housing peep valve
clockwise or counter clockwise and
regulate until the reading on OUT2 for TRX1 = 01hPa /1mbar
•
Set lock screw free before turning the peep housing.
+
-
Tighten lock screw ,don’t use high force when turning it in.
Neptune ventilator
126
Technical manual
3.11 VALVES TEST
This section of the manual describes how to check the different valves on there
functionality and for possible leaks:
1. Leakage check V7,V8 and X2.
o Enter the calibration menu.
o Activate valve 5 and 12V valves to empty the TANK.
o When Tank is empty, Set 12 v valves OFF and valve 5 OFF.
o Verify or there is a pressure increase on sensor TRX5. If so, you have to
determine which valve is leaking. Check valves V7, V8, and X2/V4.
2. Leakage check Tank
o Enter the calibration menu.
o Activate 12V valves.
o Activate valve V7 and let the pressure in Tank increase to
1000hPa/1bar.
o Close V7.
o Verify or there is a pressure drop on sensor TRX5.
o Pressure in tank may not drop more than 5hPa/5mbar in 1 minute.
o In case of leakage, check connections with tank, check valve
X3/V5,check tank (O-rings).
3. Test V7, V8 , X2/V4 , X3/V5.
o Enter the calibration menu.
o Activate 12V valves.
o Activate valve V7 and let the pressure in Tank and bottle increase to
1000hPa/1bar.
o Close V7.
o Check/replace V7 if loading from tank is not possible
o Activate V5 to discharge tank.
o Activate valve V8 and let the pressure in Tank and bottle increase to
1000hPa/1bar.
o Close V8.
Neptune ventilator
127
Technical manual
o Check/replace V8 if loading from tank is not possible
Activate V5 to discharge tank.
o Activate valve V4 and let the pressure in Tank and bottle increase to
1000hPa/1bar.
o Close V4.
o Check/replace X2/V4 if loading from tank is not possible
o Activate V5 to discharge tank.
4. Leakage check Bottle.
o
o
o
o
o
o
o
o
o
o
Enter the calibration menu.
Remove the patient breathing unit.
Connect the test patient breathing unit with the bottle.
Use a tube to connect output connection C with output connection D.
Activate valve 5 and valve 3.
Activate valve V7 and let the pressure in Tank and bottle increase to
50hPa/50mbar
Switch valve 7 OFF.
Verify or there is a pressure drop on sensor TRX5. If so, you have to
determine which valve is leaking. Check valves X5, X1, V1,V2,V14,V15
and V16
Leave the calibration menu by pressing the exit button.
Reconnect the absorber and the patient breathing system in a correct way.
5. Test V1, V2 , V14, V15and V16.
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Enter the calibration menu.
Remove the patient breathing unit.
Connect the test patient breathing unit with the bottle.
Use a tube to connect output connection C with output connection D.
Activate valve 5 and valve 3.
Activate valve V7 and let the pressure in Tank and bottle increase to
50hPa/50mbar
Switch valve 7 OFF.
ActivateV1
Pressure on TRX5 has be zero within 15 sec if not check/replace valve
V1
Set valve V1 OFF
Activate valve V7 and let the pressure in Tank and bottle increase to
50hPa/50mbar
Switch valve 7 OFF.
ActivateV2
Pressure on TRX5 has be zero within 15 sec if not check/replace valve
V2
Set valve V2 OFF
Activate valve V7 and let the pressure in Tank and bottle increase to
50hPa/50mbar
Switch valve 7 OFF.
ActivateV14
Neptune ventilator
128
Technical manual
o Pressure on TRX5 has be zero within 15 sec if not check/replace valve
V14
o Set valve V14 OFF
o Activate valve V7 and let the pressure in Tank and bottle increase to
50hPa/50mbar
o Switch valve 7 OFF.
o ActivateV15
o Pressure on TRX5 has be zero within 15 sec if not check/replace valve
V15
o Set valve V15 OFF
o Activate valve V7 and let the pressure in Tank and bottle increase to
50hPa/50mbar
o Switch valve 7 OFF.
o ActivateV16
o Pressure on TRX5 has be zero within 15 sec if not check/replace valve
V16
o Set valve V16OFF
o Leave the calibration menu by pressing the exit button.
o Reconnect the absorber and the patient breathing system in a correct way.
Neptune ventilator
129
Technical manual
3.12 PERFORMING A LEAKTEST
3.12.1 Entering the leaktest menu
Set the ventilator to standby mode and select leak test. Always disconnect the patient
before entering the leak test menu.
Note:
It is not possible to enter the leak test menu when the airway pressure is
greater than 2hPa/2mbar. Disconnect patient, so that pressure can decrease to
0hPa/0mbar.
The leak test menu is drawn in accordance with the next drawing.
Neptune ventilator
130
Technical manual
6
4
2
1
3
5
1. Patient circuit + internal bag button: press this button to select the patient
breathing circuit and the internal balloon leaktest.
2. Patient circuit + handset button: press this button to select the patient
breathing circuit and the external handset.
3. EXIT: select and press encoder knob to leave the leaktest menu.
4. PEEP valve leakage detected: this message appears when the PEEP valve
leakage test fails.
5. Information window: follow these instructions to perform a leaktest.
6. Barograph: indicates airway pressure.
Neptune ventilator
131
Technical manual
3.12.2 Performing the leaktest
You can perform a leaktest on:
-
the patient breathing circuit and the external handset.
the patient breathing circuit and the internal balloon.
To perform a leaktest on the patient breathing circuit and the external handset, proceed
as follows:
-
Select
.
Make all the connections in the patient breathing unit; see the operating
instructions of the CO2 absorber.
Close safety valve on handset.
Close / disconnect sample tube of gas monitor (optional).
Close the output of the Y-piece.
Set a fresh gas flow.
Let the airway pressure increase to 30 hPa.
Close the fresh gas flow.
The time in which the pressure decreases to 20 hPa must be
15 seconds or longer.
If the leak test is not within the specifications, check all connections in the patient
breathing circuit. If no leaks can be found, contact your service department.
After successfully performing the previously described leaktest, you can perform a
leaktest on the patient breathing circuit and the internal balloon.
Proceed as follows:
-
Select
.
Close the output of the Y-piece.
Set a fresh gas flow.
Let the airway pressure increase to 30 hPa.
Close the fresh gas flow.
The time in which the pressure decreases to 20 hPa must be
15 seconds or longer.
If the leak test is not within the specifications, check all connections in the patient
breathing circuit. Also check the internal balloon for leaks. If no leaks can be found,
contact your service department.
Neptune ventilator
132
Technical manual
When
is selected, at the same time the PEEP valve located in the
patient breathing unit is filled once with a pressure of ±100hPa/±100mbar.
The pressure in the PEEP valve will continuously be monitored. If a pressure drop is
detected within 15 sec, the message "PEEP valve leakage detected" will be displayed:
To repeat the PEEP valve test, select
followed by
To determine either the PEEP leakage is intern in the ventilator or extern in the patient
breathing unit, remove the patient circuit from bottle and close the PEEP output with
finger in accordance with next drawing.
PEEP
output
Keep your finger on the PEEP output and repeat the PEEP valve test. If the PEEP valve
test succeeds, the problem is located in the patient breathing unit, otherwise the problem
is probably intern in the ventilator.
Neptune ventilator
133
Technical manual
. Leakage in the patient breathing unit
o Check/replace mushroom valve and O-ring in the patient breathing unit.
o Check/replace blue O-ring in feed-through plate.
. Leakage located in the ventilator
o
o
o
o
o
o
o
Remove the patient breathing unit.
Connect the test patient breathing unit with the bottle.
Connect a calibrated pressure gauge to connector output A.
Set valve 13 and 12 ON.
Set valve 11 ON until the pressure is between 80-100hPa/80 – 100mbar.
Set valve 11 OFF.
Check the pressure gauge readings and check for pressure drop.
Neptune ventilator
134
Technical manual
o Set valve 10 and valve 9 ON.
o Set valve 13 OFF.
o The PEEP reservoir will be filled with a certain amount off pressure
delivered by the UPPER LIMIT reservoir.
o Check the pressure gauge readings and check for pressure drop.
o Leave the calibration menu by pressing the exit button.
o Reconnect the absorber and the patient breathing system in a correct way.
3.12.3 Leaving the leaktest menu
Leave the leaktest menu by selecting the exit
standby mode.
Neptune ventilator
135
. The ventilator will return to
Technical manual
3.13 MAINTENANCE INSTRUCTIONS
Warning: It is recommended that the Neptune should be checked at least twice a
year by the Medec Benelux NV service department or by specially
trained personnel. There are a number of parts which require either
periodic maintenance or replacement.
5 Patient breathing unit
•
The mushroom valve and the switching diaphragm are to be replaced each
service.
•
The MAN/CMV changeover valve is to be inspected at each service and if
necessary cleaned. It is replaced annually.
•
The expiration valve (under the mushroom valve) is replaced annually. When
fitting, it’s important to guide the valve gently onto its seating.
•
Check the flow sensor at each service and clean with alcohol if necessary.
•
Replace the O-rings (see detailed drawing patient breathing unit).
•
Replace the bag.
Warning: Always replace with same type of bag to ensure satisfactory
performance. In fact, the specifications of the Neptune are greatly
dependent on the elasticity of the balloon.
Warning: Never immerse the patient breathing unit in a liquid and only fit a
dry unit!
Neptune ventilator
136
Technical manual
8
1
16
10
16
2
7
10
9
6
10
10
4
Neptune ventilator
137
Technical manual
11
3
12
5 Bottle
•
The blue O-ring connections between the patient breathing unit and the bottle are
checked and tested for gas tightness at each service. Replace the O-rings every
two years.
13
14
13
Neptune ventilator
138
Technical manual
5 Solenoid valves
• The solenoid valves must be checked for proper working each service time.
5 Bottle venting valve
•
Replace the bottle venting valve on the back of the bottle at each service.
5
5 Bottle safety valve
•
Check the bottle safety valve annually and, if necessary, re-adjust to
±120hPa/120mbar.
Neptune ventilator
139
Technical manual
5 Fresh gas flow sensor
•
Inspect the sensor annually for pollution. The sensor can be checked easily by
removing the plug on the side.
Neptune ventilator
140
Technical manual
3.14 PARTS LIST
•
Item
1
2
3
4
•
Item
1
2
3
4
5
6
7
8
9
10
11
12
16
•
Item
13
14
•
Item
15
Service Parts – Patient Circuit (half-yearly check)
Quantity
1
1
1
1
Description
Switching diaphragm
Mushroom valve
Gas bag
O-ring 19X1
Part number
121213000
121227000
250035000
501190100
Service Parts – Patient Circuit (annual check)
Quantity
1
1
1
1
1
1
1
1
1
4
1
1
2
Description
Switching diaphragm
Mushroom valve
Gas bag
O-ring 19X1
Venting valve
Valve
Expiration valve
O-ring 14 x 1,78 silic. 70° shore
O-ring 18 x 2
O-ring 32 x 2
O-ring 58 x 3,5
O-ring 25 x 2,5
O-ring 23.52 x 1,78
Part number
121213000
121227000
250035000
501190100
121250000
121236000
124228000
505140100
501180200
501320200
501580300
501250100
501235100
Service Parts (two-yearly check)
Quantity
4
1
Description
O-ring 3 x 3 silic. 70° blue
O-ring 10 x 3 silic. 70° blue
Part number
505030300
505100500
Service Parts (tree yearly check)
Quantity
1
Neptune ventilator
Description
Battery 12v 7.2 Ah
141
Part number
668202000
Technical manual
4. CLASSIFICATION AND DISCARD
4.1 CLASSIFICATION
•
•
Class I/ Type B/ IPX1.
Do not use in presence of flammable anaesthetics.
Neptune ventilator
142
Technical manual
4.2 DISCARD
There is no risk for explosion when discarding.
The electronic boards and display contain a small amount of lead.
The battery is a sealed lead acid type. Please adhere to governmental related laws
or regulations when discarding the Neptune.
Neptune ventilator
143
Technical manual
5. Inspection
5.1 VISUAL INSPECTION
o
o
o
o
o
o
o
o
o
o
o
Wheels and brakes.
Check or the can rotate freely and verify or the brakes can be activated.
Drawer unit.
The drawer must go in and out drawer case smoothly.
Absorber.
Empty canister, check glass on visual damage.
Clean valve domes ,the dome glass must be free of contamination, valves must be visual without
removing the valve domes.
Check suction jar on visual damage.
Check ventilator case, front layers, pressure gauges , keyboard , display and knobs on visual
damage.
Check flowmeter glass and spindles on visual damage.
Check cover plate on visual damage.
Check manual balloon and arm, the arm must move freely with no visual damage.
Check patient circuit tubing
Check / clean AIR input pressure watertrap reservoir . The watertrap glass must be free of
contamination so that, in case there is water inside it is visual from the outside.
Check filter inside watertrap and replace when contaminated.
Check wheels and brakes.
Neptune ventilator
144
Technical manual
5.2 OTHER INSPECTIONS
1.Ventilator keyboard & encoder:
The functionality from the keys and encoder can be tested in the mode setup, the silent
button can be tested in MAN mode.
2.Speaker test:
The functionality speaker can be tested in setup
A beep is generated when the volume level is changed.
3.Mains/ battery indicator :
Set mains switch on and check mains indicator on Keyboard.
Set ventilator ON.
Check mains indicator on display.
Set mains switch OFF and check batttery indicator, Led on keyboard must go OFF.
4.Fan and filter:
The Fan has to rotate without making high noise level.
Check filter at the bottom, replace/ clean if necessary.
5.Battery:
Set mains switch OFF and verify or the ventilator can work for 1 hour on battery.
Before starting this test be sure that the ventilator was connected with the mains power
for at least 4 hours.
6.Internal connections:
Check internal tubing and electrical connections.
All tubing must be clear ,replace tubing who have indications from contamination or humidity.
7.Pressure regulators:
See technical manual section 3.5 THE PRESSURE REGULATORS.
Neptune ventilator
145
Technical manual
8.Flow regulators:
See technical manual section 3.6 THE FLOW REGULATORS
9.O2 Flush:
See technical manual section 3.7 O2 FLUSH
10.Pressure switches:
See technical manual section 3.8 THE INPUT PRESSURE SWITCHES
11.ZERO and MAX calibration transducers :
See technical manual section 3.4 THE PRESSURE TRANSDUCERS
12.Bottle safety valve:
See technical manual section 3.9 THE BOTTLE SAFETY VALVE
13.Valve test:
See technical manual section 3.10 VALVES TEST
14.Front absorber selector:
Set selector knob in front position and verify or fresh gas comes out on front.
Try to go in MAN mode. Check message on screen “Low Drive pressure” or “Fresh
gas front output selected”.
Set selector knob in absorber position and verify or fresh gas comes out on absorber.
15.Suction:
Be sure that vacuum is connected on ventilator.
Set Suction ON , block input suction jar and check for negative pressure on
pressure gauge.
Set suction OFF, No negative pressure may be seen on pressure gauge when
blocking the input from the suction jar with the suction selector in OFF position.
16. Handset safety valve:
Set the valve in close position and perform a leakage test.
Close patient Y and set flow of 10Lpm
Open fresh gas flow and verify max pressure, when valve is completely closed
The max pressure that can build up is 60 hPa +/_ 5hPa
17.O2 Measurement:
Go to setup menu section O2 calibration and perform a 21% and 100% calibration.
Neptune ventilator
146
Technical manual
Check also wire and connection with O2 cell.
See users manual section
18.Connections:
Check all external connection’s.
19.Absorber:
See technical manual Absorber
20.Flowmeter:
See technical manual Flowmeter
21.Gasovac:
See technical manual Gasovac
22.Leaktest:
See technical manual section 3.11 PERFORM A LEAKTEST
24.AERTH connection and mains output:
Disconnect the mains power cable and measure resistance between earth connection
on mains plug and earth connection on mains outlet on top cover plate.
The resistance must be less then 0.2 Ohm.
Measure resistance between earth connection on mains plug and cover plate
The resistance must be less then 0.2 Ohm.
25.Working:
Connect ventilator with test lung.
Let the ventilator work in CMV mode with following parameters.
TV:
500
PEEP
0hPa
Freq: 16
Insp.Pause 0
I:E
1/2
Freshgas
1LPM
Check volume on display with volume on testlung.
Neptune ventilator
147
Technical manual
6. TROUBLESHOOTING
™ Error code:
01
7 segment display code
Tidal volume : Err
Peak
: 01
Plateau
: 01
LCD display
Error detected / error 01 / MMI board / Internal program memory error
¾ Problem:
MMI board - Internal program memory error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test.
™ Error code:
02
7 segment display code
Tidal volume : Err
Peak
: 01
Plateau
: 02
LCD display
Error detected / error 02 / MMI board / Internal SRAM error
¾ Problem:
MMI board - Internal SRAM error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test.
™ Error code:
03
7 segment display code
Tidal volume : Err
Peak
: 01
Plateau
: 03
LCD display
Error detected / error 03 / MMI board / Internal timer error
¾ Problem:
MMI board - Internal timer error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test.
Neptune ventilator
148
Technical manual
™ Error code:
04
7 segment display code
Tidal volume : Err
Peak
: 01
Plateau
: 04
LCD display
Error detected / error 04 / MMI board / Internal EEprom error
¾ Problem:
MMI board - Internal EEprom error
Action:
Reset display parameters.
See section 1.4 MMI BOARD- Microprocessor internal function test
Resolve internal function test error code 4 – Internal EEPROM error
™ Error code:
05
7 segment display code
Tidal volume : Err
Peak
: 01
Plateau
: 05
LCD display
Error detected / error 05 / MMI board / Internal watchdog error
¾ Problem:
MMI board - Internal watchdog error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test.
™ Error code:
11
7 segment display code
Tidal volume : Err
Peak
: 02
Plateau
: 01
LCD display
Error detected / error 11 / MMI board / External flash error
¾ Problem:
MMI board - External flash error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor external function test
Resolve external function test error code 1 – External flash error
Neptune ventilator
149
Technical manual
™ Error code:
12
7 segment display code
Tidal volume : Err
Peak
: 02
Plateau
: 02
LCD display
Error detected / error 12 / MMI board / SRAM error
¾ Problem:
MMI board - External SRAM error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor external function test
Resolve external function test error code 2 – External SRAM error
™ Error code:
13
7 segment display code
Tidal volume : Err
Peak
: 02
Plateau
: 03
LCD display
Error detected / error 13 / MMI board / external display driver error
¾ Problem:
MMI board - External display driver error
‰ Action:
See section 1.4 MMI BOARD- Microprocessor external function test
Resolve external function test error code 3 – External display driver error
™ Error code:
15
7 segment code
Tidal volume : Err
Peak
: 02
Plateau
: 05
LCD display
Error detected / error 15 / MMI board / 7 Segment lockup
¾ Problem:
MMI board – 7 segement lockup
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test
Perform the internal function test
See section 1.4 MMI BOARD- 7 segment display test
Perform the 7 segment display test
Neptune ventilator
150
Technical manual
™ Error code:
16
7 segment code
Tidal volume : Err
Peak
: 02
Plateau
: 06
LCD display
Error detected / error 16 / MMI board / Barograph lockup
¾ Problem:
MMI board – barograph lockup
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test
Perform the internal function test
See section 1.4 MMI BOARD- barograph test
Perform the barograph test
™ Error code:
17
7 segment code
Tidal volume : Err
Peak
: 02
Plateau
: 07
LCD display
Error detected / error 17 / MMI board / Frontleds lockup
¾ Problem:
MMI board – Frontleds lockup
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test
Perform the internal function test
See section 1.4 MMI BOARD- led indicator test
Perform the led indicator test
™ Error code:
18
7 segment code
Tidal volume : Err
Peak
: 02
Plateau
: 08
LCD display
Error detected / error 18 / MMI board / Buzzer lockup
¾ Problem:
MMI board – buzzer lockup
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test
Perform the internal function test
See section 1.4 MMI BOARD- buzzer test
Perform the buzzer test
Neptune ventilator
151
Technical manual
™ Error code:
19
7 segment code
Tidal volume : Err
Peak
: 02
Plateau
: 09
LCD display
Error detected / error 19 / MMI board / LCD lockup
¾ Problem:
MMI Board - LCD lockup
‰ Action:
See section 1.4 MMI BOARD- Microprocessor internal function test
Perform the internal function test
See section 1.4 MMI BOARD- showing a test pattern on the graphic display
Perform the lcd pattern test
See section 1.4 MMI BOARD- Microprocessor external function test
Resolve external function test error code 3 – External display driver
20
™ Error code:
7 segment code
Tidal volume : Err
Peak
: 02
Plateau
: 04
LCD display
Error detected / error 20 / MMI board / keyboard / encoder failure
¾ Problem:
MMI board - Keyboard controller – Other failure
Problems with keyboard layer/circuit or the encoder knob.
‰ Action:
Verify that there is no key pressed.
Verify the encoder knob is not locked.
See section 1.4 MMI BOARD- Keyboard test
Perform the keyboard test
See section 1.4 MMI BOARD- Encoder test
Perform the encoder test
™ Error code:
28
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 01
LCD display
Error detected / error 28 / communication 25 ms timeout
¾ Problem:
Board communication error - 25 ms timeout
Communication with other boards is not possible.
‰ Action:
A communication problem can be the result from problems on the display board
but also from problems on other boards.
Neptune ventilator
152
Technical manual
In case of communication error:
ƒ Perform an internal test for all boards.
And verify or the tests on all boards pass.
See section 1.4 MMI BOARD - Microprocessor internal function test.
See section 1.7 MASTER BOARD - Microprocessor internal function test.
See section 1.8 PNEUMATIC BOARD - Microprocessor internal function
test.
ƒ Perform an external test for all boards.
See section 1.4 MMI BOARD – Microprocessor external function test.
See section 1.7 MASTER BOARD - Microprocessor external function test.
See section 1.8 PNEUMATIC BOARD - Microprocessor external function
test.
ƒ Perform a communication test between MASTER and DISPLAY board
See section 1.7 MASTER BOARD - Communication test between master
board and display board
ƒ Perform a communication test between MASTER and PNEUMATIC
board
See section 1.7 MASTER BOARD - Communication test between master
board and pneumatic board
™ Error code:
29
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 02
LCD display
Error detected / error 29 / Parity error start-up
¾ Problem:
Board communication error - Parity error start-up
Communication with other boards is not possible.
‰ Action:
Same action as for Error code: 28
™ Error code:
30
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 03
LCD display
Error detected / error 30 / parity error start-receive byte
¾ Problem:
Board communication error - Parity error start-receive byte
Communication with other boards is not possible.
‰ Action:
Same action as for Error code: 28
Neptune ventilator
153
Technical manual
™ Error code:
31
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 04
LCD display
Error detected / error 31 / Receive string length error
¾ Problem:
Board communication error - Receive string length error
Communication with other boards is not possible.
‰ Action:
Same action as for Error code: 28
™ Error code:
32
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 05
LCD display
Error detected / error 32 / Eot counter out of range
¾ Problem:
Board communication error - Eot counter out of range
Communication with other boards is not possible.
‰ Action:
Same action as for Error code: 28
™ Error code:
33
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 06
LCD display
Error detected / error 33 / Target slave not ready
¾ Problem:
Board communication error - Target slave not ready
Communication with other boards is not possible.
‰ Action:
Same action as for Error code: 28
Neptune ventilator
154
Technical manual
™ Error code:
34
7 segment code
Tidal volume : Err
Peak
: 03
Plateau
: 07
LCD display
Error detected / error 34 / Transmit string wrong
¾ Problem:
Board communication error - Transmit string wrong
Communication with other boards is not possible.
‰ Action:
Same action as for Error code: 28
™ Error code:
41
7 segment code
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 41 / Pneumatic board / Global error
¾ Problem:
Pneumatic board global error.
‰ Action:
ƒ Perform an internal test on pneumatic board.
See section 1.8 PNEUMATIC BOARD - Microprocessor internal function
test.
ƒ Perform an external test on pneumatic board.
ƒ See section 1.8 PNEUMATIC BOARD - Microprocessor external
function test.
™ Error code:
44
7 segment code
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 44 / Pneumatic board / Not able to start A/D converter
¾ Problem:
Pneumatic board – Not able to start A/D converter
Problem with analog digital converter on pneumatic board.
‰ Action:
Perform an external test on pneumatic board.
See section 1.8 PNEUMATIC BOARD - Microprocessor external function test.
Neptune ventilator
155
Technical manual
™ Error code:
45
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 45 / Pneumatic board / A/D converter busy time-out
¾ Problem:
Pneumatic board – A/D converter busy time-out
Problem with analog digital converter on pneumatic board.
‰ Action:
Perform an external test on pneumatic board.
See section 1.8 PNEUMATIC BOARD - Microprocessor external function test.
™ Error code:
46
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 46 / Pneumatic board / A/D readings equal to $FFF
¾ Problem:
Pneumatic board – A/D readings equal to $FFF
Problem with analog digital converter on pneumatic board.
‰ Action:
Perform an external test on pneumatic board.
See section 1.8 PNEUMATIC BOARD - Microprocessor external function test.
™ Error code:
47
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 47 / Pneumatic board / A/D readings equal to $000
¾ Problem:
Pneumatic board – A/D readings equal to $000
Problem with analog digital converter on pneumatic board.
‰ Action:
Perform an external test on pneumatic board.
See section 1.8 PNEUMATIC BOARD - Microprocessor external function test.
Neptune ventilator
156
Technical manual
™ Error code:
48
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 48 / Pneumatic board / Internal EEPROM memory error
¾ Problem:
Pneumatic board – Internal EEPROM memory error
‰ Action:
Perform an internal test on pneumatic board.
See section 1.8 PNEUMATIC BOARD - Microprocessor internal function test
Resolve internal function test error code 4 – Internal EEPROM error
Reset from the pneumatic board EEPROM settings will AFFECT the
calibration parameters. Recalibration of the ventilator is necessary in this
case. Refer to the maintenance and calibration procedure described this
manual!
™ Error code:
49
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 49 / Pneumatic board / +12V input voltage too low
¾ Problem:
Pneumatic board – 12V input voltage too low
‰ Action:
ƒ
Check 12V voltage on DC/DC converter.
Connector P1:
Pin number
3
4
ƒ
Neptune ventilator
Description
+12V DC output voltage
GND
Perform a Pneumatic function test.
See section 1.8 PNEUMATIC BOARD - Pneumatic function test.
157
Technical manual
™ Error code:
50
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 50 / Pneumatic board / +12V valves enable circuit error
¾ Problem:
Pneumatic board – 12V valves enable circuit error
Input voltage is OK but circuit can’t switch ON the 12V valve voltage
‰ Action:
ƒ
Disconnect valve connectors
ƒ
Perform. Perform a Pneumatic function test.
See section 1.8 PNEUMATIC BOARD - Pneumatic function test.
ƒ
Check for bad valve or short circuit if test is OK when valve
connectors are disconnected.
ƒ
Check circuit Q1 / Q2 when test is not OK and valve connectors
are disconnected.
Q1
+12v
R30
22K
RFP30P05
U8A
4
13
Q
CLR
B
A
Q
Q2
Cext
14
GND
C20
330N
10K
R9
BS170M
3
2
1
RCext
R20
100K
VCC
15
74HC123
GND
Neptune ventilator
158
Technical manual
™ Error code:
51
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 51 / Pneumatic board / +12V valves disable circuit error
¾ Problem:
Pneumatic board – 12V valves disable circuit error
Input voltage is OK but circuit can’t switch the 12V valve voltage OFF.
‰ Action:
ƒ
Disconnect valve connectors
ƒ
Perform. Perform a Pneumatic function test.
See section 1.8 PNEUMATIC BOARD - Pneumatic function test.
ƒ
Check circuit Q1 / Q2
Q1
+12v
R30
22K
RFP30P05
U8A
4
13
Q
CLR
B
A
Q
Q2
Cext
14
GND
C20
330N
10K
R9
BS170M
3
2
1
RCext
R20
100K
VCC
15
74HC123
GND
Neptune ventilator
159
Technical manual
™ Error code:
51
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 52 / Pneumatic board / Not able to fill tank
¾ Problem:
Pneumatic board – Not able to fill tank
A. When first starting in CMV or PCV mode the tank is filled with pressure
for the first inspiration. There is a time limit on this filling and when this time
is exceeds ERROR message 52 “Not able to fill tank ”is set on screen.
‰
B. During CMV or PCV mode, the tank will be filled with a calculated
pressure during expiration, this filling has to be done before new inspiration
starts. When this filling is still busy when new inspiration starts, ERROR
message 52 “Not able to fill tank ”is set on screen.
Action:
Situation A:
"Low input pressure or selector knob fresh gas in front position and
input pressure switch disabled.
ƒ Check selector knob fresh gas front absorber.
ƒ Check input pressure ,more than 3000hPa/3bar.
ƒ
Check or input pressure switches are in ON position
Go to next step 4 when previous checks are OK
When the switches are in OFF position, the software will not check for low level
input pressure and will try to fill tank by activating valve V4 or V7 and V8.When
this filling is not possible within time, ERROR message 52 “Not able to fill tank
”is set on screen.
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Neptune ventilator
4
Go to calibration menu.
Activate 12v valves.
Activate valve V5 to discharge Tank.
Verify tank pressure must be 0hPa/0mbar.
Perform a zero calibration tank if not zero.
Set valve V5 OFF.
Activate valve 4 and let pressure in tank increase up to 2000hPa
2bar and set valve V4 OFF. If not possible, check valve 4 and
X2.and connection V4.
Activate valve V5 to discharge Tank.
.Set valve V5 OFF.
Activate valve 7,let pressure in tank increase up to 2000hPa / 2bar
and set
valve V7 OFF.
If not possible, check valve 7 and connection V7.
Activate valve V5 to discharge Tank.
.Set valve V5 OFF.
Activate valve 8,let pressure in tank increase up to 2000hPa / 2bar
160
Technical manual
set valve V8 OFF. If not possible, check valve 8 & connection V8.
Situation B:
"Low input pressure or selector knob fresh gas to front position
switched during CMV or PCV mode and input pressure switch
disabled.
ƒ Check selector knob fresh gas front absorber.
ƒ Check input pressure ,more than 3000hPa / 3bar.
ƒ Check or input pressure switches are in ON position
Go to next step 4 when previous checks are OK
When the switches are in OFF position, the software will not check for low level
input pressure and will try to fill tank by activating valve V4 or V7 and V8.When
this filling is not possible before next inspiration starts, ERROR message 52
“Not able to fill tank ”is set on screen.
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
4
Go to calibration menu.
Activate 12v valves.
Activate valve V5 to discharge Tank.
Verify tank pressure must be 0hPa / 0mbar.
Perform a zero calibration tank if not zero.
Set valve V5 OFF.
Activate valve 4 and let pressure in tank increase up to 2000hPa
2bar and set valve V4 OFF. If not possible, check valve 4 and X2. and
connection V4.
Activate valve V5 to discharge Tank.
.Set valve V5 OFF.
Activate valve 7,let pressure in tank increase up to 2000hPa / 2bar
and set valve V7 OFF. If not possible, check valve 7 and connection
V7.
Activate valve V5 to discharge Tank.
.Set valve V5 OFF.
Activate valve 8,let pressure in tank increase up to 2000hPa / 2bar
and set valve V8 OFF. If not possible, check valve 8 and
connection V8.
™ Error code:
53
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 53 / Pneumatic board Not able to stop tank filling
¾ Problem:
Pneumatic board –Not able to stop tank filling
When the tank is filled and the valves to fill the tank are switched OFF a check is
done or the pressure is within limits.
If the pressure is higher than the calculated value ERROR message 53 “Not able
to stop tank filling ”is set on screen.
Neptune ventilator
161
Technical manual
‰
A. When first starting in CMV or PCV mode, the tank will be discharged
before filling.
This has to be done within time .if not ERROR message 53 “Not able to stop
tank filling ”is set on screen, because of high pressure in tank.
B. During CMV or PCV mode, the tank will be filled with a calculated
pressure during expiration, at the end of expiration the pressure in the tank is
checked with the calculated pressure. When this pressure is higher then the
calculated pressure value ERROR message 53 “Not able to stop tank filling
”is set on screen.
Action:
Situation A:
"Low input pressure or selector knob fresh gas in front position and
input pressure switch disabled.
ƒ Check selector knob fresh gas front absorber.
ƒ Check input pressure ,more than 3000hPa/3bar.
ƒ Check or input pressure switches are in ON position
Go to next step 4 when previous checks are OK
When the switches are in OFF position, the software will not check for low
level input pressure and will try to discharge tank pressure by activating
valve V5.Activation from valve 5 is done electrical but X3 is pneumatically
driven and activation will be not possible when there is no pressure. When
discharging is not possible within time, ERROR message 53 “Not able to
stop tank filling ”is set on screen.
4
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Go to calibration menu.
Activate 12v valves.
Activate valve V5 to discharge Tank.
If not possible check X3,V5 and connection V5.
When X3/V5 is OK verify tank pressure, must be 0hPa / 0mbar.
Perform a zero calibration tank if not zero.
Perform a leakage check V7,V8 and X2
See section 3.10 VALVES TEST / Leakage check V7,V8 and X2.
Situation B:
" Checked Tank pressure at end of expiration is higher than
calculated value.
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Neptune ventilator
Go to calibration menu.
Activate 12v valves.
Activate valve V5 to discharge Tank.
Verify tank pressure must be 0hPa / 0mbar.
Perform a zero calibration tank if not zero.
Set valve V5 OFF.
Perform a leakage check V7,V8 and X2
See section 3.10 VALVES TEST / Leakage check V7,V8 and X2.
162
Technical manual
™ Error code:
54
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 54 / Pneumatic board / Tank low flow valve close time
¾ Problem:
Pneumatic board – Tank low flow valve close time
When the tank is filled and the valves to fill the tank are switched OFF a check is
done or the pressure is within limits.
If the pressure is higher than the calculated value and valves V7 and V8 are used
to fill tank, ERROR message 54 “Tank low flow valve close time” is set on
screen.
‰ Action:
ƒ Go to calibration menu.
ƒ Activate 12v valves.
ƒ Activate valve V5 to discharge Tank.
ƒ Verify tank pressure must be 0hPa / 0mbar.
ƒ Perform a zero calibration tank if not zero.
ƒ Set valve V5 OFF.
ƒ Perform a leakage check V7,V8
See section 3.10 VALVES TEST / Leakage check V7,V8 and X2.
™ Error code:
55
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 55 / Pneumatic board / Tank high flow valve close time
¾ Problem:
Pneumatic board – Tank high flow valve close time
When the tank is filled and the valves to fill the tank are switched OFF a check is
done or the pressure is within limits.
If the pressure is higher than the calculated value and valve V4 / X2 is used to fill
tank, ERROR message 55 “Tank high flow valve close time” is set on screen.
‰ Action:
ƒ Go to calibration menu.
ƒ Activate 12v valves.
ƒ Activate valve V5 to discharge Tank.
ƒ Verify tank pressure must be 0hPa / 0mbar.
ƒ Perform a zero calibration tank if not zero.
ƒ Set valve V5 OFF.
ƒ Perform a leakage check valve X2.
See section 3.10 VALVES TEST / Leakage check V7,V8 and X2.
Neptune ventilator
163
Technical manual
™ Error code:
56
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 56 / Pneumatic board / End exp. pressure to high
¾ Problem:
Pneumatic board – End exp. pressure to high
In CMV and PCV, the pressure is checked at the end of expiration.
When this pressure is higher than the PEEP setting + 20 the ventilator
Stops the working mode, switch over to manual and error message is set on
screen.
‰ Action:
ƒ Check evacuation port at back side ventilator for obstruction.
™ Error code:
57
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 57 / Pneumatic board / PIP press. higher than upp.lim
¾ Problem:
Pneumatic board – PIP press. higher than upp.lim.
At end of inspiration CMV or PCV, the pip pressure is checked. If higher than
the upper limit +20 hPa / +20mbar (MAX 105hPa / 105mbar) the ventilator stops
the working mode, switch over to manual and error message is set on screen.
‰ Action:
ƒ Check PEEP valve in patient breathing unit.
ƒ Check valve V13 and V10
™ Error code:
58
Tidal volume : Err
Peak
: 00
Plateau
: 00
LCD display
Error detected / error 57 / Pneumatic board / Not able to lower tank pressure
¾ Problem:
Pneumatic board – Not able to lower tank pressure.
At start of expiration the tank is filled with pressure.
When there is already a pressure in the tank that is higher than the calculated
pressure, the tank pressure will be discharged.
If this is not possible before next inspiration starts, the software will see that the
discharging was still busy and an error message 58 is set on screen.
‰ Action:
ƒ Check valve V5 and X3.
Neptune ventilator
164
Technical manual
CHECKLIST NEPTUNE.
Serial number:………………
Total working hours:………
Done by:……………………..
Date:………/………/…………
conform
Y/N
1
Visual inspection
2
Keyboard & encoder
3
Speaker
4
Mains / battery indicator
5
Fan & filter
6
Battery
7
Internal connections
8
Pressure regulators
9
Flow regulators
10
Remarks
O2 Flush
11
Pressure switches
12
Calibration transducer
13
Bottle safety valve
14
Valve test
15 Front/ absorber selector
16
Handset safety valve
17
Suction
18
O2 Measurement
19
Connections
20
Absorber
21
Flowmeter
22
Gasovac
23
Leak test
24
Earth connection
25
Working
Neptune ventilator
165
Technical manual
CHECKLIST NEPTUNE.
Replaced parts:
Part Nummer
Quantity
Remark
121213000
Switching diaphragm
121227000
Mushroom valve
250035000
Gas bag
501190100
O-ring 19X1
121250000
Venting valve
121236000
Valve
124228000
Expiration valve
505140100
O-ring 14 x 1,78 silic. 70° shore
501180200
O-ring 18 x 2
501320200
O-ring 32 x 2
501580300
O-ring 58 x 3,5
501250100
O-ring 25 x 2,5
501235100
O-ring 23.52 x 1,78
505030300
O-ring 3 x 3 silic. 70° blue
505100500
O-ring 10 x 3 silic. 70° blue
668202000
Battery 12v 7.2 Ah
Neptune ventilator
166
Technical manual