RESPIRONICS*
Service
Manual
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RESPIRONICS*
Limited Warranty
Respironics warrants that the Millennium Oxygen Concentrator System shall be free from defects of workmanship and materials and will
perform in accordance with the product specifications for a period of three years from the date of sale by Respironics. An additional two
year warranty can also be purchased from Respironics. If the product fails to perform in accordance with the product specifications,
Respironics will repair or replace — at its option ~ the defective material or part. Respironics will pay customary freight charges from
Respironics to the dealer location only. This warranty does not cover damage caused by accident, misuse, abuse, alteration, and other
defects not related to materials or workmanship.
Respironics disclaims all liability for economic loss, loss of profits, overhead, or consequential damages which may be claimed to arise from
any sale or use of this product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you.
This warranty is given in lieu of all other express warranties. In addition, any implied warranty, including any warranty of merchantability
or fitness for the particular purpose, is limited to three years unless the additional two year warranty is purchased. Some states do not
allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific
legal rights, and you may also have other rights which vary from state to state.
To exercise your rights under this warranty, contact your local authorized Respironics dealer or contact Respironics at:
KA.
>
RESPIRONICGS INC’
RESPIRONICS INC’
RESPIRONICS"
Pittsburgh, Pennsylvania
15221-4401 USA
Marietta, Georgia
30066 USA
Gewetbesterasse 17
D-82211 Herrsching Germany
1501 Ardmore Boulevard
1255 Kennestone Circle
Deutschland
Visit Respironics Home Page on the World Wide Web at:
www.respironics.com
Millennium Oxygen Concentrator System Service Manual
0459
РЕЗОН.
Table of Contents
Tabl eo f C ont ents
Overview:
Millennium Oxygen
Millennium
1.2
Service Notice
System
Technical S
echnical
3
NS
Statement ..................
2.1.2
.……。。。。。。。。。。。。。
Notes
Notes
1002403
2-3
Safety
Operational
ui
ss
enr
3.4
2-3
2-3
3.5
3-3
3-4
324
AlarmConditiens............................. 3-5
Dimensions...
Safety Features
mn.
Alert Conditions
Power Indication...
ss
ee
Oxygen Percentage Indicator
(Model 605)
Functional Description ....
3.3.1
Front Cabinet................
3.3.3
Imtermal Components...
33.2
se. 2-1
Peer
Cautions
“4/33
ne
Performance Requirements ..................... 3-4
3.2.7
14
Theory of Operation ...... 3-1
3.2.1
3.2.6
14
Features, &
Specifications...
3.2.5
1-3
.
Warnings, Cautions, &
Notes
in
Warnings
2.1.1
23
sort
Support
Concentrator
.
Chapter2:
22
Oxygen
Overview .....
Specifications, Description,
OVETVIEW
3.2.2
3.2.3
Introduction .................... 1-1
11
21
.............. O-1
3.2
.
Chapter1:
.
3.1
Concentrator Technical
Service Manual
13
Chapter3:
3-5
ss
Rear Cabinet and Sides
Theory of
Operation
3.4.1
Pneumatic Operation ..
34.2
т
PPP
Electrical Op eration
рета
Control Panel Description
Operation
351
3-5
PD
IT
FPP
AlarmsFFP
/ Conditions 0.
Millennium Oxygen Concentrator System Service Manual
이시 3-14
314
Table of Contents
RESPIRONICS”
Table of Contents (Continued)
Chapter4:
4.1
4.2
Procedures .ee
Overview μμ μμ μμ μμ.
Weekly User Maintenance....................... 6-5
4- 工
System Setup ss
Chapter5:
5.1
5.2
5.3
System Setup
Verification
Procedures ...........
6.3.1
Cleaning the Air Inlet Filter .................... 6-5
Dealer Routine Maintenance ...
64.1
6.4.2
643
644
6.4.5
6.4.6
AirInlet Filter.................
Inlet Pre-Filter and Inlet Filter ..
Cleaning the Cabinet..................
OPI PCB Oxygen Verification
Battery Test
Start-up LED and Audible
ον
6-6
... 6-6
… 6-6
… 6-7
μι μμ
μμ μμ”
Dealer Periodic Maintenance
54
Oxygen Outlet / Regulated
6.5.1
6.5.2
5.5
OPI PCB Oxygen Verification
Dealer Compressor Maintenance ......... 6-13
Pressurelest..................... eee.
Chapter6:
6.1
6.2
Maintenance .................... 6-1
Övemview.......................
Maintenance Schedule ...........
6.2.1
6.2.2
6.2.3
6.24
1002403
6.6.1
Bacteria Filter Maintenance
Product Canister Pressure
Measurement ss.
6-13
Compressor Maintenance...................... 6-14
Millennium Oxygen Concentrator
Maintenance Record
Weekly User Maintenance
Dealer Routine Maintenance..
Dealer Periodic Maintenance
Dealer Compressor Maintenance
Millennium Oxygen Concentrator System Service Manual
ee 6-21
Table of Contents
RESPIRONICS*
Table of Contents (Continued)
Chapter7:
A
72
7.3
83
8.4
AAA
848
7-1
7-3
Troubleshooting Table ............................. 7-4
System Pressure Test Table.................... 7-16
Chapter 8:
8.1
82
Troubleshooting and
Diagnostics ss
Repair &
Replacement
8-1
Overview eee
8-3
Millennium Oxygen Concentrator
Repar KitS ss
8-6
Warnings and Cautions ......................... 8-16
Replacementinstructions...................... 8-17
841
842
Overlay Replacement
Caster Replacement
845
Separating the Front Cabinet
843
844
succesen 8-20
ee 8-22
Base Cabinet Pan Replacement ............. 8-25
Rear Cabinet Replacement .................... 8-28
8.4.6
Assembiy ftomthelLhnit.................... 8-31
Flow Meter (Standard & Pediatric)
847
DISS Outlet Fitting Replacement
1002403
Replacement emre
8.4.9
Power Switch Replacement ................... 8-41
Fuse Replacement (On the Power
Control Board (PCB))
eee
8.4.10 Power Control Board (PCB) Assembly
Replacement
ss
8.4.11 Oxygen Percentage Indicator (OPI)
Wiring Harness Replacement -
8-44
8-45
Model 605 Only... scenes
8.4.12 Oxygen Percentage Indicator (OPI)
8-48
Model 605 OmY iii
8.4.13 Power Switch Wiring Harness
Replacement ................
rin
8-50
Board Replacement -
8-53
8.4.14 O, / Solenoid / Battery Wiring
Harness Replacement.............................. 8-56
8.4.15 Front Cabinet Replacement ................... 8-59
8.4.16 Cooling Fan Replacement...................... 8-62
8.4.17 Perforated Canopy Replacement.......... 8-65
8.4.18 Compressor Cover / Perforated
Canopy Replacement .................. 8-67
8.4.19 Main Power Wiring Harness
Replacement iii
8.4.20 Capacitor Replacement
8.4.21 Pressure Relief Valve Replacement ...... 8-74
8.4.22 Compressor Assembly Replacement ... 8-76
Millennium Oxygen Concentrator System Service Manual
Table of Contents
RESPIRONICS®
me
Table of Contents (Continued)
8.4.23 In-line Muffler Replacement .................
8.4.24 Hour Meter Replacement ......................
Appendix B: Schematic .……………… ......В-1
8.4.26 Pressure Regulator Replacement
B.2
8.4.25 Valve / Solenoid Replacement .....
8.4.27 Sieve Canister Assembly
Replacemett rien
8.4.28 Blow Down Muffler Replacement
8.4.29 Power Cord Replacement
B.1
...
8-90
ce
8.4.30 Base Cabinet Replacement .................... 8-97
8.4.31 Foam Replacement ............................... 8-99
Chapter 9:
Testing
Millennium System Final Test ..
9.2
TestingDataSsheet................................... 9-6
Testing Procedure
Appendix C: Receiving Inspection
C.1.
Πτι
Check
A.2
μμ
μμ μμ μμ μμ μμ
… 9-3
nn 9-3
Service Tools and Supplies ..................... A-3
Acceptable Test Equipment.................... A-5
A.2.1
A22
1002403
В-3
1
Receiving Inspection Checks Chart ......C-3
Appendix A: Tools and Equipment.... A-1
A.1
n
Master Controller PCB............................. B-4
9-1
9.1
9.11
Schematic Statement
Digital Multimeter
Oxygen Analyzer iii
Millennium Oxygen Concentrator System Service Manual
μμ μμ
İZİ
Overview
RESPIRONICS*
Millennium Oxygen Concentrator System
Overview:
Technical Service Manual
Warranty
Details the Respironics warranty policy for the Millennium
Oxygen Concentrator System.
Table of Contents
Lists the chapters included in this manual.
Chapter 1:
Introduction
Introduces the Millennium Oxygen Concentrator System and gives
Technical Support contact information.
Chapter2:
Warnings, Cautions, & Notes
Lists the Wamings, Cautions, and Notes.
Chapter 3:
Specifications, Description, Features,
& Theory of Operation
Provides specifications, a functional description, theory of operation,
and alarm system summary for the Millennium Oxygen Concentrator
System.
Chapter 4
System Setup Procedures
Details system setup procedures.
Chapter 5:
Verification Procedures
Gives instructions for the battery, cycle time, and oxygen verification tests.
Chapter 6:
Maintenance
Details the routine maintenance schedules that should be followed by the
user and dealer, as well as detailed instructions for dealer compressor
maintenance.
Chapter 7:
Troubleshooting and Diagnostics
Provides a troubleshooting table and diagnostic information.
Chapter 8:
Repair & Replacement
Describes detailed procedures of removing and installing all major
components within the unit. Includes graphics and photographs for visual
identification.
Chapter *
Testing
Provides post replacement testing procedures and a Testing Data Sheet.
1002403
Millennium Oxygen Concentrator System Service Manual
0-1
RESPIRÓNICS"
AAA
Overview
A
EE
Overview (Continued)
С
Appendix A: Tools and Equipment
Details the necessary tools, supplies, and test equipment required for
servicing and testing.
Appendix B: Schematic
Provides a system schematic.
NOTE:
The system schematic is proprietary and is to be used for reference only.
Appendix C: Receiving Inspection Checks
Provides a Receiving Inspection Checks chart to record the irispection,
installation, and check out procedures.
Index:
Provides an alphabetical listing of key components and terms.
1002403
Millennium Oxygen Concentrator System Service Manual
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Chapter 1: Introduction
RESPIRÓNICS"
Chapter 1:
Introduction
1.1 Millennium Oxygen Concentrator
System Overview
The Millennium Oxygen Concentrator System (Millennium) is
intended to provide supplemental oxygen to persons requiring low
flow oxygen therapy. This device is not intended to be life supporting nor life sustaining. Millennium produces concentrated oxygen
from room air for delivery to a patient. The oxygen from the air is
concentrated using a molecular sieve and a pressure swing adsorption process.
Figure 1-1
Front View of Millennium
Respironics holds itself harmless for any injury or damage resulting
from repairs, modifications, or adjustments outside the scope of this
manual, including installation and maintenance by anyone other
than trained, certified technicians.
1002403
Millennium Oxygen Concentrator System Service Manual
Chapter 1: Introduction
RESPIRONKS*
1.2 Service Notice
This manual is intended to be used by trained service technicians.
The information provided in this manual will allow the service
technician to perform the service and maintenance required on
Millennium. Warranty repairs may be performed by a factory
authorized service center or Customer Satisfaction Center (CSC).
1.3 Technical Support Statement
Respironics is committed to customer satisfaction and may be
contacted with any questions or for technical support. For technical
assistance or replacement part ordering information, contact your
For additional information or technical support, contact:
U.S. and Canada
Phone:
Fax:
1-800-669-9234
1-800-421-8754
Available from your nearest CSC
Visit Respironics Home Page on the World Wide Web at:
www.respironics.com
nearest Respironics Customer Satisfaction Center (CSC).
RESPIRONICS INC?
RESPIRONICS INC?
Pittsburgh, Pennsylvania
Marietta, Georgia
1501 Ardmore Boulevatd
1255 Kennestone Citcle
15221-4401 USA
RESPIRONICS *
Deutschland
Gewerbesterasse 17
D-82211 Herrsching Germany
1002403
30066 USA
C
€
0459
Millennium Oxygen Concentrator System Service Manual
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Chapter 2: Warnings, Cautions, & Notes
RESPIRÓNICS"
Chapter 2:
Warnings, Cautions, éz
Notes
The following terms are used throughout this manual to identify
possible safety hazards, conditions that may result in equipment or
property damage, or important information that must be considered.
It is important to read, understand, and follow them at all times.
WARNING:
Indicates the possibility of injury to the patient,
CAUTION:
Indicates the possibility of damage to the device.
NOTE:
Places emphasis on an operating characteristic or
important consideration.
operator, or technician.
2.1 WARNINGS
2.1.1 Safety
Oxygen generated by this concentrator is supplemental and should not be considered life supporting
or life sustaining. In certain circumstances, oxygen
therapy can be hazardous; any user should seek
medical advice prior to using this device.
1002403
Where the prescribing physician has determined
that an interruption in the supply of oxygen, for any
reason, may have serious consequences to the user,
an alternate source of oxygen should be available
for immediate use.
Keep the unit away from heat and/or open flame as
oxygen greatly accelerates combustion.
Do not smoke when the concentrator is operating or
a patient is using oxygen.
Do not use greases, oils, or any petroleum based
solvent or cleaner on or near the unit.
Use extreme caution when handling the compressor
capacitor as it holds an electrical charge until it is
properly discharged.
Avoid handling the molecular sieve material.
Respironics recommends the return of the sieve
canister assembly to Respironics for any service that
involves sieve disposal.
2.1.2 Operational
Never modify the power cord or use adapters,
extension cords, etc. The unit is double insulated
and does not require a 3-prong power plug. Any
modification to the power cord could alter this
safety feature.
Millennium Oxygen Concentrator System Service Manual
Chapter 2: Warnings, Cautions, & Notes
RESPIRONICS*
Operational (Continued)
2.2 CAUTIONS
A physician must prescribe use of a humidifier with
the Millennium. Use of only bubble type humidifiers is recommended and connections must be secure
and free of leaks.
Federal (U.S.) law restricts this device to sale by, or
on the order of, a licensed physician. This device
should be used only under the supervision of a
physician.
If the Millennium Oxygen Concentrator has been
subjected to sub freezing temperatures for an ex-
tended period of time, it should be allowed to warm.
up to the stated operating temperatures before
power up. Failure to do so could result in improper
performance and or alarm conditions until the unit
reaches normal operating temperatures.
s
Be sure to inform the user not to position the unit
close to drapery or curtains that might restrict the
airflow.
*
When using liquid leak detector, be careful not to
allow it to contact electrical parts.
+
Make sure connections of fittings, tubing, and hoses
are secure.
*
Be cautious when using thread sealants because
they can cause extensive damage to the internal
parts of the unit if allowed within tubing or fittings.
e
Clean all exterior cabinet surfaces periodically by
wiping with a damp cloth, using a mild detergent
and/or hospital disinfectant.
+
Use only Respironics or factory-authorized replace-
Do not turn on unit while any filter is wet or moist.
1002403
Place the unit where cooling airflow is unrestricted.
ment parts and accessories.
Millennium Oxygen Concentrator System Service Manual
2-4
Chapter 2: Warnings, Cautions, & Notes
RESPIRÓNICS"
2.3 NOTES
*
Make sure the flow meter is set at the patient's
prescribed flow rate.
*
Make sure there are no kinks in the user’s oxygen
tubing. If necessary, use a non-kink style delivery
tube (unit will go into an audible and visual alarm if
the tubing is kinked or the flowmeter is turned
completely off).
1002403
Millennium Oxygen Concentrator System Service Manual
.
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Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRONICS"
Chapter 3:
Specifications,
Description,
Features, &
Theory of
Operation
3.1
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3.3
Fumctional Descriptiom ee
3-6
34
TheoryofOperatio.............................. 3-10
3.5
Control Panel Description Operation ...3-14
1002403
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RESPIRONICS"
Chapter 3:
Chapter 3: Specifications, Description, Features, & Theory of Operation
Specifications,
Description, Features,
& Theory of Operation
3.1
Overview
This chapter provides a physical and functional description of the
Millennium Oxygen Concentrator System (Millennium). This unit’s
specifications are listed, the theory of operation is described, and the
external controls and indications are identified.
1002403
Millennium Oxygen Concentrator System Service Manual
3-3
Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRONICS"
3.2 Specifications
Storage / Transport
Temperature .....................
.
3.2.1
Performance Requirements
Storage / Humidity ............
Voltage eres
Flow Rate erne
120 VAC — 60 Hz
230 VAC - 50 Hz
Variable
from 0.5 to 5 Ipm
.
Variable
from 0.5 to 4 Ipm
-30 — 160°F
-34 — 71°C
Up to 95%,
non-condensing
o
Up
t0 98%)
non-condensing
Storage / Transport Atmospheric
Pressure .........
seres
790 — 525 mm Hg
790 - 525 mm Hg
Altitude:
Oxygen
Concentration’ ....
92 + 4% @ 5 рт
94 +2% 2 0.5 to 4 lpm
92 + 4% @ 4 Ipm
Power
94 + 2% @ 0.5 to 3 Ipm
Consumption ee
60x10
Sound Pressure Level (dBA)
ο
Oxygen Outlet Pressure
(No Flow) nn
psig
:
Operating
Pressure „eee
Model 600 and 605 …….
ISO 8359, Clause 26.2} …
27 +2 psig @5 lpm
の
o Ὃ
fe
po“
480W
890W
60 Hz — 49.8 dBA
50 Hz - 45.5: dBA
186 kPa + 13.8 kPa@4Ipm | , Oxygen concentration levels are for operation within specified
Back Pressure Effect ...........
Operating
Temperature ..............
1002403
0 kpa @5 lpm
7 kpa @ 4.9 lpm
temperature and altitude ranges. Operation outside specified
8
y
decrease oxyg;
.
55 — 90°F
15-32°С
Millennium Oxygen Concentrator System Service Manual
3-4
Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRONICS"
3.2.2
Dimensions
Width eee
18.9 in.
48.0 cm
13,3 in.
‧
PCB failure; and
*
High and low pressure.
Oxygen percentage indicator (Model 605): O, < 70%.
33.78 cm
3.2.5 Alert Conditions
Height ......................
26.8 in.
Visual yellow LED with intermittent audible alarm and red LED:
Weight
49.9 in.
22.68 kg
68.07 cm
и льинииь
Shipping Weight ......
3.2.3
56 lbs
25.4 kg
*
nooxygen flow.
Oxygen percentage indicator (model 605): 70% O, < 85%.
3.2.6
Power Indication
Visual, green LED (next to power switch).
Safety Features
Pressure Relief Valve .............. 40 + 3 psig
303 + 20.7 kPa
3.2.7 Oxygen Percentage Indicator
Compressor Compartment Thermal
Protection with Self Reset ..... 167ºF
75°C
Warning Conditions:
Blinking yellow LED
and until O, > 85%.
Normal Oxygen:
Visual green LED when O, > 85%.
3.2.4 Alarm Conditions
(Model 605)
after unit is turned on
Visual red Light Emitting Diode (LED) and audible sound alert:
1002403
‧
Start-up test;
*
Power failure;
Millennium Oxygen Concentrator System Service Manual
3-5
Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRONICS*
3.3 Functional Description
Item Name
3.3.1
ALARM Red Light | Visually indicates unit is in alarm condition.
The red Alarm light goes off and audible
alarm stops within a two seconds of turn on.
Front Cabinet
The unit’s front cabinet external controls, indicators, and connections are identified in Figure 3-1, and are described in Table 3-1.
Function
Flow
Power
Oxygen Percentage | Monitors the percentage of concentrated
(Model 605 only)
oxygen produced by the unit. At start up
Indicator green,
the lights flash momentarily then after
yellow, and red
approximately a two minute delay, one of
lights.
the lights will illuminate according to the
operating status.
Meter
Switch
Control Overlay
Alarm red light, ON green light, oxygen
percentage.
ON Green Light
DISS
Outlet
Fitting
Control
I/O Power Switch
Overlay
Flow Meter
Hluminates when unit is powered.
| Used to turn the unit on or off.
Used to set and indicate amount of oxygen
flowing from unit to patient. Adjustable
from 0.5 to 5.0 Ipm.
DISS Outlet Fitting | A male DISS fitting used to connect the
matting connector from the humidifier
bottle or the patient’s cannula.
Front
Cabinet
Table 3-1
Millennium Front Cabinet External Controls,
Indicators, and Connections
Figure 3-1
Front Cabinet
1002403
Millennium Oxygen Concentrator System Service Manual
3-6
Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRONICS*
3.3.2 Rear Cabinet and Sides
The unit’s rear cabinet external components and connections are
identified in Figures 3-2 & 3-3 and are described in Table 3-2.
Instruction Overlay
Figure 3-3
Side View
Rear
Cabinet
Air Inlet
|
Filter
Rear
Access
Door
cora
ate
Item Name
Pre-Inlet Filter
Filters the air that enters the concentrator.
Power Cord
Used to connect unit to AC power receptacle.
Power
Rear Access Door | Allows access to the inlet pre-filter and inlet
i
filters
and battery.
Cord
Instruction Overlay|
Hour
A quick reference list of operating instructions
{located on top of the rear cabinet).
Meter
Fi
32
igure 3-.
Rear Cabinet
1002403
Function
Hour Meter
Indicates cumulative hours of unit operations
(Cannot be reset).
Serial Plate
Lists Model and Serial Numbers, Requirements, and Specifications.
Table 3-2
Millennium Rear Cabinet Sides and External Components
Millennium Oxygen Concentrator System Service Manual
3-7
e
Chapter 3: Specifications, Description, Features, & Theory of Operation
3.3.3 Internal Components
For more detailed information on the internal components of
Millennium, please refer to Chapter 8, Repair & Replacement.
Control Overlay
Rear Cabinet
Front Cabinet
Air Inlet Filter
Access Door
Power Control
Board
Inlet Pre-Filte
Power Switch
Wiring Harness
Alarm Battery
OPI (Model
605 Only)
Inlet Filter
1002403
Flow Meter
DISS Outlet
Fitting
Bacteria Filter
Millennium Oxygen Concentrator System Service Manual
OPI Wire
Harness
3-8
πε
cs:
Chapter 3: Specifications, Description, Features, & Theory of Operation
Internal Components (Continued)
Power Cord
Caster (x4)
Base Cabinet Pan
Perforated Canopy
Compressor
Cover
Base Cabinet
Cooling Fan
Compressor
Sieve Canister
In-line Muffler.
Blow Down
Muffler
Pressure Relief
Valve
Hour Meter
Capacitor
Compressor Mounts
Valve / Solenoid
Pressure Regulator
(x4)
Figure 3-4
Internal Components
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Millennium Oxygen Concentrator System Service Manual
3-9
Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRÓNICS"
3.4 Theory of Operation
The Millennium Oxygen Concentrator System (Millennium) supports patients and health care providers in producing highly concentrated oxygen for therapeutic breathing purposes.
into the product tank and 2/3 is passed through orifice (11) in to
sieve bed (8b) to purge the Nitrogen from the sieve bed, which exits
through the exhaust port of the valve/solenoid (7b) to exhaust
chamber (13) through blow down muffler (14) to outside air in a
time of 6.25 seconds.
-
Air we breath is normally a mixture of 21% oxygen, 78% nitrogen,
and 1% argon and other gases. Millennium uses a compressor and
molecular sieve to remove nitrogen from the air. The concentrated
oxygen exits the DISS Outlet fitting to the user.
At the end of this cycle the unit will balance for 1 second which deenergizes valve / solenoid (7b) and allows compressed air to flow
into both sieve canisters. The pressure reaches the max switching
pressure and sends a 12 volt signal to valve / solenoid (7b) and the
3.4.1 Pneumatic Operation
adsorption cycle starts over in the sieve canister (8b). Oxygen is in a
continuous flow from the product can (10) through the regulator (15)
through the flow meter (16) to the bacteria filter (17) to the patient.
Refer to Figure 3-5 while reading the following discussion.
The room air enters the unit through an inlet filter mounted on the
side of the cabinet. The primary system air is drawn through a foam
air inlet filter (1) mounted on the side of the cabinet. The primary
system air is drawn through the inlet pre-filter (2) and then through
the inlet filter (3) by the compressor (4). The exhaust air then passes
through the in-line muffler (5) to the supply chamber.
The compressor exhaust air is cooled by the supply chamber (6) and
distributed using an SMC pneumatic valve/solenoid assembly (7).
At start up, valve (7) is de-energized allowing compressed air to
flow into both sieve canisters (8) until the pressure sensor builds up
to switching pressure. At switching pressure, a 12 volt signal is
received at valve/solenoid (7a) closing the input and allowing
compressed air to continue through sieve bed (8a) for 6.25 seconds
absorbing the Nitrogen and allowing the Oxygen to flow through
check valve (9a) and into the product tank (10). At 5 liters of flow
(4 liters international) approximately 1/3 of the Oxygen is deposited
1002403
Millennium Oxygen Concentrator System Service Manual
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Chapter 3: Specifications, Description, Features, & Theory of Operation
RESPIRONIGS*
m
3.4.2 Electrical Operation
Refer to Figure 3-6 while reading the following discussion.
Power is supplied from the two-prong plug to the power switch.
When the power switch is ON, 120 VAC power is supplied to the
CONTROLLER BOARD
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The main circuit board consists of a linear power supply, pressure
sensor, software driven microprocessor, green, yellow, and red
LED's and audible alarm. The main circuit board provides the
following functions:
Transforms and rectifies the AC supply voltage to
12 VDCA for use by the board components, solenoids, and oxygen percentage indicator (OPI) board.
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Microprocessor controls the valve and solenoid
pressure swing adsorption cycle, visual LED’s, and
audible alarm.
MOTOR START
CAPACITOR
Monitors the units pressure using a pressure
transducer.
The oxygen percentage indicator board provides the following
functions:
*
*
Ultrasonically senses the percentage of concentrated
oxygen produced by the unit.
Outputs an analog voltage to the Main Control
Board used to operate the green, yellow, and red
,
;
;
San
LED’s associated with the oxygen monitoring
system.
1002403
||0
MILLENNIUM WIRING HARNESS
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Electronic Component Block Diagram
Millennium Oxygen Concentrator System Service Manual
3-12
+
eds
Chapter 3: Specifications, Description, Features, & Theory of Operation
Electrical Operation (Continued)
The 9-volt battery provides a power source to operate the audible
alarm and the red LED alarm light in the event of an AC power
failure.
1002403
Millennium Oxygen Concentrator System Service Manual
3-13
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Chapter 4: System Setup Procedures
RESPIRONICS®
Chapter 4:
System Setup
Procedures
4.1 Overview
These system setup procedures should be performed on the Millennium Oxygen Concentrator System (Millennium) at the following
times to confirm that the unit is operating properly:
1002403
¢
before placing the unit with a patient; and
*
periodically while the unit is in use.
Millennium Oxygen Concentrator System Service Manual
4-3
Chapter 4: System Setup Procedures
RESPIRONICS*
4.2
System
Setup
Power
Step 1
When removing unit from shipping carton, check unit
for damage caused during shipping. If damage is
found, follow directions on shipping carton.
NOTE:
If a unit is new, check for shipping damage.
If damage is found, follow directions on the
shipping carton.
Step 2
Verify that the cabinet is clean and correctly positioned.
Step 3
Remove the rear access door and check to see that the
inlet pre-filter and the inlet filter are clean and in place.
Also, check the air inlet filter.
Step 4
Power
Switch
Alarm
LED
Before connecting the unit to a power source, perform
the following procedure to check battery condition and
alarm function.
(Red)
a.
Move the power switch to the ON (1) position. The
Step 5
Connect the power cord to a power source.
alarm should sound and the red light emitting
diode (LED) should illuminate.
Step 6
.
Make a note of the hour meter reading.
b.
1002403
LED
(Green)
.
|
Millennium Control Panel
Move the power switch to the OFF (0) position. The
alarm and the red LED light should go off.
Millennium Oxygen Concentrator System Service Manual
4-4
Chapter 4: System Setup Procedures
RESPIRÓNICS"
System Setup (Continued)
NOTE:
Step 8
Step 9
If you have a Model 605 (which is equipped with
the oxygen percentage indicator (OPI). The
yellow LED light will blink until the oxygen
purity is above 85%. Then, the green normal
oxygen LED illuminates.
Adjust the flow meter to 5 Ipm (international units to
4 lpm). Turning the flow meter knob clockwise
decreases flow and counter-clockwise increases the
flow.
If the items above are working properly, continue
with Step 9. If there is a problem, see Chapter 7-,
Troubleshooting & Diagnostics.
Hour
Meter
Step 7
Step 10
Location Figure
of the 4-2
Hour Meter
Attach a calibrated Oxygen Analyzer to the DISS
outlet fitting. The oxygen concentration should be as
specified in Section 3.2, Specifications.
Turn on the unit by moving the power switch to the
ON (1) position and verify the following:
all LED's illuminate and audible alarm sounds for
two seconds;
the unit starts running; and
the green power LED remains illuminated.
1002403
Millennium Oxygen Concentrator System Service Manual
4-5
Chapter 4: System Setup Procedures
RESPIRONICS*
System Setup (Continued)
DISS
Outlet
Fitting
Step 11
1002403
Figure 4-3
Location of the DISS Outlet Fitting
This completes the system setup and performance
verification.
Millennium Oxygen Concentrator System Service Manual
4-6
Chapter 5: Verification Procedures
RE
RESPIRÓNICS"
Chapter 5:
5,1
Verification
Procedures
Overview nn
5-3
5.2 Battery Test and Replacement .................. 5-4
5.3
System Pressure Test...
54
Oxygen Outlet / Regulated
5.5
Pressure TeSt ir
5-5
5-7
OPI PCB Oxygen Verification................... 5-9
1002403
Millennium Oxygen Concentrator System Service Manual
5-1
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Chapter 5: Verification Procedures
RESPIRONICS*
Chapter 5:
Verification
Procedures
5.1 Overview
These verification procedures should be used to test the performance
of the Millennium Oxygen Concentrator System (Millennium).
1002403
Millennium Oxygen Concentrator System Service Manual
RESPIRONICS”
Chapter 5: Verification Procedures
ен
5.2 Battery Test and Replacement
Procedure:
Step 1
9-Volt
Test the condition of the 9-volt battery as follows.
a.
With the unit disconnected from the power source,
move the power switch to the ON (I) position and
verify that the red LED alarm illuminates and the
audible alarm sounds.
b.
Ifthe red LED does not illuminate or the audible
Battery
alarm does not sound, install a new 9-volt battery.
Be sure to move the power switch to the OFF (0)
position, then proceed as follows.
1002403
1).
Remove the rear access door.
2).
Remove the inlet pre-filter and the inlet filter.
3).
Locate the 9-volt battery and the battery
holder clips. Remove the battery from its
holder.
4)..
Remove the battery connector from the
battery and check the no-load voltage with a
digital multi-meter. If the voltage is less than
5 volts, install a new battery.
Figure 5-1
Location of the 9-volt Alarm Battery
Millennium Oxygen Concentrator System Service Manual
5-4
Chapter 5: Verification Procedures
RESPIRÓNICS"
5.3 System Pressure Test
Procedure:
Yellow
The system pressure test is used to verify the internal operating
Tubing
Pressure
pressures of the Millennium Oxygen Concentrator.
Step 1
Run the unit with the cabinets on for a minimum of one
hour,
Step 2
Remove the front and rear cabinets from the unit (see
Sections 8.4.4 and 8.4.5 for more detailed instructions).
Step 3
Disconnect the yellow pressure tubing from the fitting
on the top of the sieve cannister assembly. Using the
pressure gauge, “T” fitting, and short yellow tubing
supplied with the Millennium tool kit, connect a pressure gauge to the long yellow pressure tubing and the
sieve canister assembiy.
1002403
Sieve
Cannister
Fitting
,
Figure 5-2
Connecting the Pressure Gauge
Step 4
Tum the unit on and set the flow to 5 Ipm. Allow the
unit to cycle for at least 2 minutes to stabilize.
Step 5
Hold the pressure gauge in a vertical position.
Step 6
Monitor the pressure gauge. Record the peak pressure
for four cycles.
Millennium Oxygen Concentrator System Service Manual
5-5
Chapter 5: Verification Procedures
RESPIRONICS"
System Pressure Test (Continued)
Step 7
Confirm that the peak of each cycle is within the operating pressure of 27 + 2 psig for normal operation. Confirm that all peaks are within 1 psig of each other.
NOTE:
If the four cycles are not within specification,
proceed to Section 7.3, System Pressure Test Table,
for diagnostic information.
Step 8
Disconnect the pressure gauge, “T” fitting, and tubing.
Reconnect the yellow tubing to the fitting on the top of
the sieve canister.
Step 9
Install the front and rear cabinets (see Sections 8.4.4 and
8.4.5 for more detailed instructions).
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Millennium Oxygen Concentrator System Service Manual
5-6