Drive DeVilbiss Healthcare 1060AW User manual

DANGER –NO SMOKING
Assembled in USA
Drive Devilbiss®10-liter Oxygen COnCentratOr
serviCe Manual
MODEL 1060AW
CAUTION
Federal (U.S.A.) law restricts this device to sale by or on the order of a physician.
FPO
Update front
cover image

LT-2355
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TABLE OF CONTENTS
GENERAL INFORMATION
Introduction............................................................................................................................................................................................................................. 3
Symbol Definitions.................................................................................................................................................................................................................. 3
Important Safeguards............................................................................................................................................................................................................. 4
UNPACKING AND SETUP
Initial Inspection...................................................................................................................................................................................................................... 7
Patient Setup.......................................................................................................................................................................................................................... 7
Operating Instructions ............................................................................................................................................................................................................ 7
MAINTENANCE
Patient Alert System............................................................................................................................................................................................................... 8
Alarm Function Testing......................................................................................................................................................................................................... 10
Service Life .......................................................................................................................................................................................................................... 11
Routine Patient Maintenance ............................................................................................................................................................................................... 11
Periodic Homecare Provider Preventative Maintenance...................................................................................................................................................... 11
Preventative Maintenance Summary ................................................................................................................................................................................... 12
Provider's Notes ................................................................................................................................................................................................................... 13
Service and Maintenance Guidance .................................................................................................................................................................................... 14
TROUBLESHOOTING
System Operation................................................................................................................................................................................................................. 13
Normal Operating Sequence................................................................................................................................................................................................ 13
Control Panel Alarms Overview ...............................................................................................................................................................................................
LED Fault Codes - PC Board...................................................................................................................................................................................................
Simplified Troubleshooting ................................................................................................................................................................................................... 16
Troubleshooting Chart A....................................................................................................................................................................................................... 17
Troubleshooting Chart B ...................................................................................................................................................................................................... 18
Troubleshooting Chart C ...................................................................................................................................................................................................... 18
Troubleshooting Chart D ...................................................................................................................................................................................................... 18
Troubleshooting Chart E ...................................................................................................................................................................................................... 19
Troubleshooting Chart F....................................................................................................................................................................................................... 19
COMPONENT TESTING, REPAIR, AND REPLACEMENT
Proper Repair Procedures.................................................................................................................................................................................................... 20
Cabinet Removal.................................................................................................................................................................................................................. 20
Accumulator Tank................................................................................................................................................................................................................. 20
Accumulator Pressure Test .................................................................................................................................................................................................. 20
Check Valves........................................................................................................................................................................................................................ 22
Compressor.......................................................................................................................................................................................................................... 22
Cooling Fan.......................................................................................................................................................................................................................... 25
Flow Meter............................................................................................................................................................................................................................ 25
Fused IEC Connector...............................................................................................................................................................................................................
Hour Meter ........................................................................................................................................................................................................................... 25
Leak Testing ......................................................................................................................................................................................................................... 25
Manifold................................................................................................................................................................................................................................ 25
Molecular Sieve Beds........................................................................................................................................................................................................... 26
Power Cord .......................................................................................................................................................................................................................... 26
Power Switch........................................................................................................................................................................................................................ 26
Pressure Regulator .............................................................................................................................................................................................................. 27
Printed Circuit Board (PC Board)......................................................................................................................................................................................... 27
Rotary Valve ......................................................................................................................................................................................................................... 28
FIGURES, DIAGRAMS AND PARTS LIST
1060AW Unit ........................................................................................................................................................................................................................ 29
Accessories and Tools.......................................................................................................................................................................................................... 31
Pneumatic and Wiring Diagrams.......................................................................................................................................................................................... 32
ORDERING INFORMATION AND PARTS RETURN
Ordering Information ............................................................................................................................................................................................................ 34
Returns................................................................................................................................................................................................................................. 34
WARRANTY......................................................................................................................................................................................................................... 35
Return and Disposal............................................................................................................................................................................................................. 35
SPECIFICATIONS................................................................................................................................................................................................................ 36
ELECTROMAGNETIC COMPATIBILITY INFORMATION................................................................................................................................................... 37

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LT-2355
GENERAL INFORMATION
INTRODUCTION
This service manual was designed to provide Drive DeVilbiss Healthcare qualied service technicians and homecare providers with the proper maintenance, service,
safety, and repair procedures for the Drive DeVilbiss Oxygen Concentrator.
Read and understand all the information contained in this service manual before attempting to operate or perform any maintenance on the concentrator.
An oxygen concentrator is a device that delivers highly concentrated oxygen for therapeutic applications.
Room air is a mixture of 78% nitrogen, 21% oxygen, 1% argon and other gases. The concentrator draws in room air, separates the nitrogen from the oxygen, and
delivers concentrated oxygen to the patient through an oxygen port.
For more in-depth classroom type training, contact the Respiratory Technical Service Department at 1-800-338-1988 (814-443-4881).
NOTE– DeVilbiss reserves the right to alter or change the design of the Drive DeVilbiss Oxygen Concentrator series. Hence, slight differences in construction or
components may exist between the unit in hand and what is described in this manual.
SYMBOL DEFINITIONS
It is mandatory to read and understand
the operating instructions prior to use.
This symbol has a blue
background on the product label.
Manufacturer Catalog Number LOT Number
Electric Shock Hazard. Cabinet to be
removed by authorized personnel only.
This symbol has a yellow
background on the product label.
Medical Device Serial Number
C US
TUV Rheinland C-US
approval mark
Danger - No smoking near patient or
device.
This symbol has a red circle and
diagonal bar on the product label.
Alternating Current Class II, Double Insulated Type BF applied part
Use no Oil, Grease or Lubricants
This symbol has a red circle and
diagonal bar on the product label.
+5˚C
+40˚C Operating Temperature
Range +5 to +40˚C (+41 to
+104˚F)
1010
hPa
795
hPa
Atmospheric Pressure
Range 795 to 1013 hPa
(Approximate sea level to
6562 ft)
10
≤ 10 LPM
10
8 8
6 6
4 4
2 2
Maximum recommended
ow rate: 10 LPM
Do not use near heat or open ames
This symbol has a red circle and
diagonal bar on the product label.
O
I
Off
On
The outlet connector
marked with rated range of
gas pressure and rated
range of gas owrate
General Warning
This symbol is used throughout
this manual to indicate hazardous
situations to avoid.
Recurring Reminders Attention Required
Important Information
This symbol is used throughout
this manual to indicate important
information you should know.
Nurse/Attendant Biomed Technician
Startup Low O2 LED
This symbol illuminates
Yellow when active.
Note and Information Symbol
This symbol is used throughout
this manual to indicate notes, useful
tips, recommendations and
information.
Check Air Filter Notication
LED
This symbol illuminates
Yellow when active
Low Flow LED
This symbol illuminates
Red when active
O2 % (Oxygen Percentage) Status
LEDs
CAUTION: Federal (U.S.A.) law
restricts this device to sale by or on
the order of a physician.
Check Compressor Intake
Filter Notication LED
This symbol illuminates
Yellow when active
Over Temperature LED
This symbol illuminates
Red when active.
IP21
Ingress Protection - Protected against nger access to hazardous parts;
protected against vertically falling water drops.
Service Required LED
This symbol illuminates
Red when active.
Audio Pause Button and
Active LED
This symbol illuminates
White when active.
This device contains electrical and/or electronic equipment that must be
recycled per EU Directive 2012/19/EU- Waste Electrical and Electronic
Equipment (WEEE)
MRI Unsafe symbol –
Unsafe for Magnetic
Resonance Environment
Hour Meter

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GENERAL INFORMATION
IMPORTANT SAFEGUARDS
Read this entire guide before using your Drive DeVilbiss concentrator. Important safeguards are indicated throughout this guide. Pay special attention to all safety
information.Imminently and potentially hazardous information is highlighted by these terms:
DANGER
Indicates an imminently hazardous situation which could result in death or serious injury to the user or operator if not avoided.
WARNING
Indicates a potentially hazardous situation which could result in death or serious injury to the user or operator if not avoided.
CAUTION
Indicates a potentially hazardous situation which could result in property damage, injury, or device damage if not avoided.
IMPORTANT
Indicates important information you should know.
NOTE
Indicates notes, useful tips, recommendations, and information.
READ ALL INSTRUCTIONS BEFORE USING.
DANGER
1. NO SMOKING signs should be prominently displayed.
2. Oxygen causes rapid burning. Do not smoke while your oxygen concentrator is operating, or when you are near a person utilizing oxygen therapy.
3. Smoking during oxygen therapy is dangerous and is likely to result in facial burns or death. Do not allow smoking within the same room where the
oxygen concentrator or any oxygen carrying accessories are located.
• If you intend to smoke, you must always turn the oxygen concentrator off, remove the cannula and leave the room where either the cannula or
mask or the oxygen concentrator is located. If unable to leave the room, you must wait 10 minutes after you have turned off the oxygen
concentrator before smoking.
4. Oxygen makes it easier for a re to start and spread. Do not leave the nasal cannula or mask on bed coverings or chair cushions if the oxygen
concentrator is turned on but not in use. The oxygen will make the materials ammable. Turn the oxygen concentrator off when not in use to prevent
oxygen enrichment.
5. Keep the oxygen concentrator and cannula at least 2 m (6.5 feet) from hot, sparking objects or naked sources of ame.
6. Open ames during oxygen therapy are dangerous and are likely to result in re or death. Do not allow open ames within 2 m (6.5 feet) of the oxygen
concentrator or any oxygen carrying accessories.
7. Drive DeVilbiss oxygen concentrators are equipped with a re mitigating outlet tting that prevents propagation of re into the unit.

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LT-2355
GENERAL INFORMATION
WARNING
1. To avoid electric shock, do not plug the concentrator into an AC outlet if the concentrator cabinet is broken. Do not remove the concentrator cabinet.
The cabinet should only be removed by a qualied Drive DeVilbiss technician. Do not apply liquid directly to the cabinet or utilize any petroleum-based
solvents or cleaning agents.
2. Improper use of the power cord and plugs can cause a burn, re or other electric shock hazards. Do not use the unit if the power cord is damaged.
3. Ensure the mains power cord is fully inserted into the concentrator connector and the power cord plug is completely inserted into a fully functioning AC
wall outlet. Failure to do so may cause an electrical safety hazard.
4. The accessories (nasal cannula, masks, oxygen tubing, humidiers, etc.) that supply oxygen to the patient must be equipped with a means that, in
case of re, stops the propagation of re through the accessory for the safety of the patient and others. A re activated ow-stop or thermal fuse
device, if available, should be used with the oxygen supply accessories. These types of ow-stop devices stop the ow of oxygen to the patient in the
event of re. This means of re protection should be located as close to the patient as practicable.
5. Locate oxygen tubing and power supply cords to prevent tripping hazards and reduce the possibility of entanglement or strangulation.
6. Do not lubricate ttings, connections, tubing or other accessories of the oxygen concentrator to avoid the risk of re and burns.
7. Do NOT use lubricants, oils or grease.
8. Before attempting any cleaning procedures, turn the unit “Off.
9. Use only water-based lotions or salves that are oxygen-compatible before and during oxygen therapy. Never use petroleum or oil-based lotions or
salves to avoid the risk of re and burns.
10. Use only spare parts recommended by the manufacturer to ensure proper function and to avoid the risk of re and burns.
11. If you feel discomfort or are experiencing a medical emergency while undergoing oxygen therapy, seek medical assistance immediately to avoid harm.
12. Geriatric, pediatric or any other patient unable to communicate discomfort can require additional monitoring and/or a distributed alarm system to
convey the information about the discomfort and/or the medical urgency to the responsible caregiver to avoid harm.
13. Use of this device at an altitude above 10,000 feet (3050 meters) or above a temperature of 104˚F (40˚C) or greater than 95% relative humidity may
affect the ow rate and the percentage of oxygen and consequently the quality of the therapy. Refer to specications for details regarding parameters
tested.
14. To ensure you receive the therapeutic amount of oxygen delivery according to your medical condition, the Oxygen Concentrator must:
• be used only after one or more settings have been individually determined or prescribed for you at your specic activity levels.
• be used with the specic combination of parts and accessories that are in line with the specication of the concentrator manufacturer and that
were used while your settings were determined.
15. Your delivery settings of the oxygen concentrator should be periodically reassessed for the effectiveness of therapy.
16. For your safety, the oxygen concentrator must be used according to the prescription determined by your physician.
17. Under certain circumstances, oxygen therapy can be hazardous. Seek medical advice before using an oxygen concentrator.
18. The proper placement and positioning of the prongs of the nasal cannula in the nose is critical to the amount of oxygen delivered to the respiratory
system of the patient.
19. Do not modify the oxygen concentrator or accessories
WARNING
MR Unsafe
1. Do not bring the device or accessories into a Magnetic Resonance (MR) environment as it may cause unacceptable risk to the patient or damage to
the oxygen concentrator or MR medical devices. The device and accessories have not been evaluated for safety in an MR environment.
2. Do not use the device or accessories in an environment with electromagnetic equipment such as CT scanners, Diathermy, RFID and electromagnetic
security systems (metal detectors) as it may cause unacceptable risk to the patient or damage to the oxygen concentrator. Some electromagnetic
sources may not be apparent, if you notice any unexplained changes in the performance of this device, if it is making unusual or harsh sounds,
disconnect the power cord and discontinue use. Contact your home care provider.
3. This device is suitable for use in home and healthcare environments except for near active HF SURGICAL EQUIPMENT and the RF shielded room of
an ME SYSTEM for magnetic resonance imaging, where the intensity of Electromagnetic DISTURBANCES is high.
4. Use of this equipment adjacent to or stacked with other equipment should be avoided because it could result in improper operation. If such use is
necessary, this equipment and the other equipment should be observed to verify that they are operating normally.
5. Portable RF communications equipment (including peripherals such as antenna cables and external antennas) should be used no closer than 30 cm
(12 inches) to any part of the oxygen concentrator, including cables specied by the manufacturer. Otherwise, degradation of the performance of this
equipment could result.
6. Use of accessories, transducers and cables other than those specied or provided by the manufacturer of this equipment could result in increased
electromagnetic emissions or decreased electromagnetic immunity of this equipment and result in improper operation.
7. Do not use ACCESSORIES, detachable parts and materials not described in the instructions for use.
8. Do not interconnect this oxygen concentrator with other equipment not described in the instructions for use.

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GENERAL INFORMATION
WARNING
Risk of injury or damage
1. When the device is operated at the extremes of the environmental operating specications (i.e., maximum temperatures and humidity), and in a single fault
condition, which is a single component or performance malfunction, such as a blocked exhaust vent, blocked air intake, or an internal cooling fan failure, the
temperature of the air coming out of the exhaust vents, located on the bottom left and bottom right sides of the unit can reach temperatures capable of causing a
burn injury (see stated temperature and contact time values in the model specic tables below).
2. Keep exposed body parts, such as hands and feet, a minimum of 62 inches (1.6 meters) away from the exhaust vents to avoid the risk of burns. Single fault
conditions may result in visual and audible alerts and alarms.
NOTE – Under normal and single fault conditions, the concentrator releases warm air out the bottom of the unit (exhaust vents) which may discolor
temperature sensitive ooring surfaces. The concentrator should not be used over ooring that is sensitive to heat staining. The Manufacturer is not responsible
for ooring that becomes discolored.
3. Operate the unit in a cool, dry area with good ventilation, located on a hard surface, avoid thick rugs or carpeting. NEVER block the air intake or exhaust vents.
Keep the unit a minimum of 12 inches (30.5 cm) away from any wall, draperies, or any other objects that might prevent the proper ow of air in and out of your
oxygen concentrator. Proper air ow is needed to prevent overheating of the oxygen concentrator. DO NOT place the concentrator near any heat source such as
hot air registers or heaters. Overheating of the oxygen concentrator may lead to low oxygen output and a risk of burns .
4. The oxygen concentrator should be located in a well-ventilated area. DO NOT operate the unit in a closed or conned space, such as a closet, bathroom, etc.
Avoid operating the device near smoke pollutants and fumes.
5. Under extreme environmental conditions and a single fault condition occurs, the following device surface temperatures may exceed 106 °F (41 °C). See Table 1
below for the model specic maximum temperature and safe contact guidance:
Table 1 - Model 1060AW
Description
Maximum Temperature
Max safe contact time
1060AW Series
°F °C
Air coming from exhaust vents located on each side near the bottom of the unit 155.1 68.4 Less than 10 seconds
Oxygen outlet tting 108.0 42.2 Greater than 10 minutes
Power switch 112.5 44.7 Less than 10 minutes
LED Indicator panel 109.8 43.2 Less than 10 minutes
Cannula at the outlet 108.7 42.6 Greater than 10 minutes
CAUTION
1. Federal (U.S.A.) law restricts this device to sale by or on the order of a physician.
2. It is very important to follow your oxygen prescription. Do not increase or decrease the ow of oxygen – consult your physician.
3. Use of harsh chemicals (including alcohol) is not recommended. If bactericidal cleaning is required, a non-alcohol based product should be used to
avoid inadvertent damage.
4. The 1060AW Series oxygen concentrator, its parts and accessories are specied for use at ow rates between 1 and 10 LPM
5. Install, use and maintain the 1060AW Series Oxygen Concentrator following this instruction guide to minimize the environmental impact of the oxygen
concentrator through its expected life. The oxygen concentrator consumes XXX watts during normal use. Water can be used as needed for
humidication of the delivered oxygen. The Bacteria Intake Filter and Final Bacterial Filter are disposable and could need to be replaced twice during
the expected service life. Other byproducts created during the normal use of the oxygen concentrator are heat, noise and nitrogen gas. Follow
instructions to minimize the effects of heat and noise. Nitrogen gas discharged by the oxygen concentrator is quickly dissipated back into room air. The
oxygen concentrator contains no hazardous substances.
IMPORTANT
1. It is recommended that the homecare provider lock the ow control knob to prevent inadvertent adjustment. A ow setting other than prescribed may
affect the patient therapy.
2. Do not service or clean this device while in use with a Patient.
3. The Device is classied as IP21 which means it is protected against nger access to hazardous parts and protected against vertically falling water
drops.
4. Equipment not suitable for use in the presence of a ammable anesthetic mixture with air or with oxygen or nitrous oxide.
5. This device contains electrical and/or electronic equipment. Follow local governing ordinances and recycling plans regarding disposal of device
components.
SAVE THESE INSTRUCTIONS.
FPO
Update

7
LT-2355
UNPACKING AND SETUP
INITIAL INSPECTION
1. Upon receiving, examine the unit for external damage. If the unit appears to
have external damage, please contact DeVilbiss for assistance.
2. Check to be sure the cabinet air lter and the intake lter are in place.
3. Plug the unit into an electrical outlet, turn the unit ON and check the audible/
visual alarms. When the unit is turned ON, as part of the normal start-up
process, all ten (10) LEDs on the front panel should illuminate and the
audible alarm should sound when the unit is rst turned ON. If ANY front
panel LEDs DO NOT illuminate or the audible alarm DOES NOT sound, the
alert system is not functioning properly. Refer to the Troubleshooting chart
and contact your biomed technician if necessary.
4. Set the ow meter at the maximum recommended ow rate and allow the
unit to run for 20 minutes. The internal oxygen sensor monitors the oxygen
purity. If the oxygen is within specication, the Green Good Oxygen LED will
be illuminated. If the Yellow Low Oxygen LED is illuminated, refer to
Troubleshooting in the IFU, the Service Manual, or contact DeVilbiss for
assistance.
5. With unit still running, unplug to test the power fail alarm. If the power fail
alarm does not provide an audible alert, refer to the Service Manual or
contact DeVilbiss for assistance.
When ready for operation
WARNING
The accessories (nasal cannula, masks, oxygen tubing, humidiers,
etc.) that supply oxygen to the patient must be equipped with a
means that, in case of re, stops the propagation of re through the
accessory for the safety of the patient and others. A re activated
ow-stop or thermal fuse device, if available, should be used with
the oxygen supply accessories. These types of ow-stop devices
stop the ow of oxygen to the patient in the event of re. This
means of re protection should be located as close to the patient as
practicable
1. Attach the nasal cannula to the oxygen tubing per the manufacturer’s
directions
2. Follow the Operating Instructions.
OPERATING INSTRUCTIONS
1. Remove the power cord completely from the strap. Make sure the power
switch is in the “Off” position.
2. Ensure cord is connected to the unit before inserting plug into an appropriate
electrical outlet.
WARNING
Improper use of the power cord and plugs can cause a burn, re, or
other electric shock hazards. Do not use the unit if the power cord is
damaged.
Oxygen causes rapid burning. Do not smoke while your oxygen
concentrator is operating, or when you are near a person utilizing
oxygen therapy. Keep the oxygen concentrator and cannula at least
6.5 feet (2 m) from hot, sparking objects or naked sources of ame.
WARNING
The Drive DeVilbiss 1060AW oxygen concentrator is equipped with a
re mitigating outlet tting that prevents propagation of re into the
unit.
The accessories (nasal cannula, masks, oxygen tubing, humidiers,
etc.) that supply oxygen to the patient must be equipped with a
means that, in case of re, stops the propagation of re through the
accessory for the safety of the patient and others. A re activated
ow-stop or thermal fuse device, if available, should be used with the
oxygen supply accessories. These types of ow-stop devices stop
the ow of oxygen to the patient in the event of re. This means of
re protection should be located as close to the patient as practicable
WARNING
As part of the normal start-up process, all ten (10) LEDs on the front
panel should illuminate and the audible alarm should sound when the
unit is rst turned ON. If ANY front panel LEDs DO NOT illuminate or
the audible alarm DOES NOT sound, the alert system is not
functioning properly. Refer to the Troubleshooting chart and contact
your biomed technician if necessary.
3. Press the power switch to the “ON” position. When the unit is turned ON, all
ten (10) LEDs on the front panel will illuminate briey and an audible signal
will briey alarm conrming that the LEDs and audible signal are functioning
properly. The unit will then operate in “start-up” mode with the Startup Low
O2 LED illuminated until a normal oxygen level is achieved, at which time the
Green Good O2 LED illuminates and will remain lit. The start-up mode may
take up to 15 minutes..
NOTE–Drive DeVilbiss recommends for optimal service life that the Drive
DeVilbiss Oxygen Concentrator to be operated for at least 30 minutes after it
is powered on. Shorter periods of operation, operating in extreme
temperature/humidity conditions or in the presence of contaminates, and/or
handling and storage conditions outside those specied, may affect the long
term reliable operation of the product.
4. Slowly turn the ow meter knob until the ow meter ball is centered on the
line next to the appropriate ow rate.
NOTE–When the ow meter knob is turned clockwise, the ow
decreases (and eventually will shut off the oxygen ow). When the knob is
turned counter-clockwise, the ow increases.
NOTE– For prescriptions of 10 LPM, be sure the ball is centered on the
10 liter line; the ball should not touch the red line. Setting the ow higher
than 10 may cause the oxygen purity level to drop.
NOTE– The low-ow alarm may activate if the ow meter ball is set
below 1 lpm. The unit will continue to run; however, the Service Required
light will come on accompanied by an audible alarm. Adjust the ow meter to
your prescribed ow.
NOTE–The unit may require up to 20 minutes for the oxygen
concentration and ow rate to stabilize. The ow rate should be monitored
and readjusted if necessary.
5. The ow meter has a locking device. If it is necessary to preset and lock in
the prescribed ow rate, tighten the set screw located on the hex nut just
below the control knob using a 1/16" Allen bit. No adjustment can be made
without loosening the set screw.
6. The Drive DeVilbiss oxygen concentrator is now ready for use.

LT-2355
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MAINTENANCE
PATIENT ALERT SYSTEM
The Drive DeVilbiss Oxygen Concentrator patient alert system will detect unit
component failure. This system is comprised of both visible and audible alerts
which signal the patient if a malfunction should occur.
DeVilbiss OSD®Operation
The OSD (Oxygen Sensing Device) is a device within your concentrator that
monitors the oxygen produced by your unit.
The OSD lights on the top panel are dened as follows:
Green Good Oxygen LED – acceptable oxygen level.
Yellow Low Oxygen LED – below the good oxygen level.
Red Critical Low Oxygen LED - below the critical oxygen level.
If the oxygen purity falls below the acceptable level, the green Good Oxygen
LED will shut off, the yellow Low Oxygen LED will illuminate, and an intermittent
audible signal will sound.
If the oxygen purity continues to fall into the critical low level, the Red Critical
Low Oxygen LED alerts with an audible alarm.
Refer to the Troubleshooting section in this guide. Do not attempt any other
maintenance. Contact your biomed technician immediately if the issue is not
resolved.
NOTE– Refer to the Alerts section below for specic alert settings.
NOTE– After power on, the electronics continuously monitor the oxygen
sensor. If a fault is detected, the appropriate LED(s) and/or audible alarms will
activate..
The rst 15 minutes, the unit will be in Start Up mode. The oxygen purity is
continuously monitored and the yellow Start Up Low Oxygen LED will be On.
The green Good Oxygen LED will turn on as soon as the therapeutic oxygen
levels are obtained. After 15 minutes stabilization time, if the O2is less than
82% the yellow Low O2LED will illuminate and a beeping audible alarm will
occur. If the oxygen level falls below 60% (after startup) then the red Critical
Low Oxygen LED will illuminate along with a beeping audible alarm.
Alerts:
There are several visible service alerts located on the control panel. The
audible alert system is internally powered; no batteries are required. If the
indicator lights illuminate or the audible alert sounds other than during start-up,
a problem has occurred. Detailed Alarm Information is found in Troubleshooting
section of this manual.
• Power Failure (Red Service Reqiured LED and pulsing audible alert.
• Low Flow (Red Low Flow LED and audible alert)
Below normal O2:
• The yellow Low Oxygen LED will illuminate with an audible alarm at
approximately <82%.
• The red Crtical Low Oxygen LED will illuminate with an audible alarm at
<60%.
The visible and audible alerts will activate for a minimum of two minutes in a no
power situation. If the unit is turned On without power or power is removed
later, the alert will sound within 10 seconds. After that time, the alert will
produce an audible pulse every few seconds while the LED ashes. Power for
this alert is provided by a capacitor on the PC board.
NOTE– If the concentrator has been unused for an extended period, the unit
must run for a minimum of 2 minutes before the power fail alert will activate. 10
minutes of run time is needed to fully charge the capacitors to run the power fail
alarm for the entire 120 second specication.
The PC (printed circuit) board is responsible for controlling the system and
alerts.
NOTE– A high pressure condition is indicated by the audible (a “popping”
sound) release of pressure from a pressure relief valve located on the
compressor head.
NOTE– Settings below 1 LPM may activate the low ow alarm.
ALARM FUNCTION TESTING
The 1025 series is designed to activate alarms when certain conditions or
failures occur. The alarm functions may be tested following the procedures
below:
1. Overheating:
a. Remove the front and rear covers from the concentrator; then
disconnect the cooling fan from the printed circuit board.
b. Replace the front and rear covers.
c. Place the concentrator in a location that has an ambient temperature
of approximately 70° F. Then plug the unit into the appropriate mains
voltage and turn it on.
d. Allow the unit to operate until the Service Required Alarm activates,
which should be within approximately two hours.
2. Compressor Failure:
a. Remove the rear cover from the concentrator; then disconnect the
compressor electrical connector from the main wire harness.
b. Plug the unit into the appropriate Mains voltage and turn it on.
c. Allow the unit to operate until the Service Required Alarm activates,
which should be within approximately two minutes.
3. Low Flow / Obstruction of Gas Pathway:
a. Plug the concentrator into the appropriate mains voltage and turn it
on.
b. Allow the device to run for several minutes.
c. Turn the ow meter off so that there is no oxygen owing out of the
unit.
d. Allow the unit to operate until the alarm condition occurs (red light
and audible beep).
e. Increase the ow to 2 LPM and conrm that the alarm condition
ends.
4. High Flow
a. Connect the oxygen concentrator to AC power and turn the power
switch on.
b. Allow the device to run for several minutes.
c. Adjust the output ow to more than 11.0 LPM using the ow meter
knob (turn counter clockwise until ball goes above 11.0 LPM).
d. The alarm condition (yellow light) should occur.
e. Decrease the ow to 10 LPM and conrm that the alarm condition
ends.
5. Oxygen Generation Mains Failure:
a. Plug the concentrator into the appropriate mains voltage and turn it
on.
b. Turn the ow meter to 10 LPM.
c. Attach another ow meter to the auxiliary oxygen port which is
located on the rear of the concentrator and then adjust the ow to 3
LPM.
d. Allow the unit to operate until the Service Required Alarm is
activated, which should be within approximately thirty minutes.
6. Pressure Failure:
a. Remove the front and rear covers from the concentrator.
b. Disconnect the tubing from the top of one of the sieve beds.
c. Plug the unit into the appropriate mains voltage and turn it on.
d. Turn the ow meter to 10 LPM.
e. Allow the unit to operate until the Service Required Alarm is
activated, which should be within approximately thirty minutes.
7. Power Supply Failure

9
LT-2355
MAINTENANCE
a. Connect the oxygen concentrator to AC power and turn the power
switch on. Allow the device to run for a minimum of 10 minutes.
b. With the power switch in the On position, unplug the AC power cord
from the outlet.
c. The alarm condition (blinking service required LED and pulsing
audible alert) should occur and continue for a minimum of 120
seconds.
d. Reconnect the AC power cord and conrm that the alarm condition
ends.
8. Malfunction – O2S Gas Temperature High
a. This alarm condition is tested automatically during start-up.
9. Malfunction – Corrupted Settings
a. This alarm condition is tested automatically during start-up.
10. Malfunction – Non-Recoverable Valve Error
a. This alarm condition is tested automatically during start-up.
11. Malfunction – O2S Oxygen Sensor Communication Failure
a. This alarm condition is tested automatically during start-up.
12. Low Oxygen Concentration – Startup Period
a. Connect the oxygen concentrator to AC power and turn the power
switch off.
b. Leave the device off for several minutes until the outlet ow is zero
(ow meter ball at zero).
c. Turn the power switch to the on position. The alarm condition (yellow
light) occurs during startup until the oxygen concentration reaches
85%.
13. Low Oxygen Concentration – Startup Period Over
a. This alarm condition is tested automatically during start-up. Once the
oxygen concentration reaches 85% the green light comes on.
SERVICE LIFE
The expected service life of the 1060AW series oxygen concentrator, which
includes the performance of any required service or maintenance, is 5 years.
The expected service life is based on the operation of the device in accordance
with all manufacturer guidance for safe use, maintenance, servicing, storage,
shipping, handling, and general operation.
The actual service life of the unit, and in particular the service life of certain
subcomponents, including the Filters, Sieve Beds and Compressor Cup Seals,
will vary based on a number of variables, including the operating environment,
storage environment, shipping, handling, performance of preventive
maintenance, and both the frequency and intensity of use.
The 1060AW series oxygen concentrators have internal sensors and diagnostic
systems designed to monitor the system performance, including the oxygen
concentration (purity), ow and temperature. The 1060 concentrators will alert
the user when the device requires maintenance or service. Please see the
Troubleshooting and Maintenance Sections for more detailed information.
ROUTINE PATIENT MAINTENANCE
CAUTION
Incompatible parts or accessories can result in degraded
performance. Use only recommended parts and lters to ensure
reliable operation of the product.
The oxygen patient should perform the following maintenance:
Cannula/Mask, Tubing, & Humidifier Bottle
The patient should clean and replace the cannula, tubing, and humidier bottle
according to the manufacturer’s instructions.
Oxygen Outlet Connector
Remove the oxygen outlet connector and clean as needed or replace between
patients.
Cabinet Air Filter
The gross particle air lter should be inspected periodically and cleaned as
needed by the user or caregiver. Replace if torn or damaged. To clean, follow
these steps:
NOTE– Frequency of inspection and cleaning of lter may be dependent
upon environmental conditons like dust and lint.
1. Remove the air lter located in the door on the back of the unit.
2. Wash in a solution of warm water and dishwashing detergent.
3. Rinse thoroughly with warm tap water and towel dry. The lter should be
completely dry before reinstalling.
CAUTION
To prevent product damage, do not attempt to operate the unit
without the air lter or while the lter is still damp
NOTE–The air lter should be monitored more closely in environments with
abnormal amounts of dust and lint.
CAUTION
Operation of the Drive DeVilbiss Oxygen Concentrator in extreme
environments or without the air lter will prematurely occlude the
intake bacteria lter and cause a decrease in the unit performance.
Intake Filter
The Intake Filter should be inspected when the Check Intake Filter LED
illuminates and replaced as necessary. To check or replace, follow these steps:
Note– Frequency of inspection and lter replacement may be dependent
upon environmental conditions like dust and lint.
1. Open the lter door on the rear of the concentrator.
2. Remove the air lter from behind the door and inspect the color and
debris. If lter is discolored to a dark gray, it should be replaced.
CAUTION
To prevent product damage, do not attempt to operate the unit
without the intake lter.
Exterior Cabinet
The patient should clean the concentrator exterior cabinet weekly by using a
damp cloth or sponge with a mild household cleaner and wiping it dry. Inspect
the lter door vents periodically, and wipe with a dry cloth as needed to remove
dust.
WARNING
Do not apply liquids directly to the cabinet or utilize any petroleum-
based solvents or cleaning agents.
PERIODIC HOMECARE PROVIDER
PREVENTATIVE MAINTENANCE
Use only DeVilbiss concentrator replacement parts and accessories.
Every Drive DeVilbiss Oxygen Concentrator is tested at the factory. To assure
continued trouble-free performance, the following preventative maintenance
should be performed by the homecare provider during periodic oxygen patient
visits. Failure to properly maintain the unit will void the warranty.
1. Check the oxygen concentration with an oxygen analyzer (part #R217P62)
– every 3 years.
a. Calibrate the oxygen analyzer prior to checking the oxygen
concentration. The analyzer should be properly calibrated using the
manufacturer’s recommended procedure.
NOTE– Changes in temperature, altitude or humidity may affect the
analyzer’s oxygen concentration reading. The analyzer should be calibrated in

LT-2355
10
MAINTENANCE
similar conditions to the location of the concentrator.
b. Power the unit. Set the ow meter to 10 LPM and connect the
analyzer to the unit’s oxygen outlet port.
c. Allow the oxygen percentage to stabilize before taking a nal reading,
up to a maximum of 20 minutes.
d. Record the reading.
2. Check the audible alert and indicator lights during every service. When the
power is turned ON, listen for the audible alert and check to see if the
control panel LEDs are operating.
3. Inspect cabinet air lter (part #XXXXX) every PM check. Replace if lter is
torn or damaged.
4. Inspect intake lter (part #XXX) at every PM check. Replace if the lter
looks dirty or there is a drop in oxygen purity.
a. Open the lter door and replace lter as required.
5. I nspect the nal bacteria lter (part #PV5LD-651) during every compressor
service.
a. Use the Cabinet Removal instructions found under CABINET
REMOVAL in this manual to remove and attach the cabinets.
b. Remove the hose from each end of the lter and discard the lter.
c. Install the new nal bacteria lter with the “IN” tting toward the ow
meter.
6. Inspect the compressor lter (part #1025D-682) during every compressor
service. Replace if the compressor is replaced.
7. Inspect the AC power cord and power switch between every patient
change. Replace any damaged or defective components.
NOTE– This PM Schedule reects:
• 4000 hour usage equal to one year
• a normal, clean operating environment.
The homecare provider is responsible for:
• determining the condition of the concentrator operating environment.
• determining a preventative maintenance interval frequency* which
takes into consideration the specic operating environment.
* Standard intervals are noted below. Service interval may be more
or less frequent than stated below provided that the Home Care
Provider establishes and documents appropriate protocols.
PREVENTATIVE MAINTENANCE
SUMMARY
Patient / Caregiver
Clean and replace oxygen tubing, cannula / mask, and humidier bottle (if used)
according to manufacturer’s instructions.
Homecare Provider
During each inspection
• Wash/Replace cabinet lter.
• Check audible alert and indicator lights.
• Clean lter door vents.
• Inspect intake lter and replace if needed
During each PM check – every 3 years for the 1060 series
• Inspect/Replace intake bacteria lter as necessary.
• Check oxygen purity.
During compressor service
• Inspect/ Replace nal bacteria lter.
• Inspect/ Replace the compressor lter
NOTE– There is no portion of the gas pathways through the concentrator
that could be contaminated with body uids under normal conditions. The device
patient connection may unintentionally become contaminated with expired gases
if a hose internal to the device becomes disconnected. This condition will cause
no ow out of the device and/or an alarm condition.
1. Should this occur, remove the front cabinet in order to determine where the
disconnection occurred.
2. Replace all components from the free end of the disconnect through the
outlet port. Reference the pneumatic diagram and replacement part
numbers/instructions.
Air Intake Holes

11
LT-2355
MAINTENANCE
PROVIDER’S NOTES - Cleaning and
Disinfection When There is a Patient
Change
NOTE– Recommendations for preventative maintenance at 3-year intervals
are outlined in the Service and Maintenance Guidance below.
Drive DeVilbiss Healthcare recommends that at least the following procedures be
carried out by the manufacturer or a qualied third party between uses by
different patients.
NOTE– If the following described complete processing of the concentrator by
an appropriately trained individual is not possible, the device should not be used
by another patient.
NOTE– If preventive maintenance is due at this time, these procedures
should be carried out in addition to the servicing procedures.
1. Use disinfectants safely. Always read the label and product information
before use.
2. Always wear personal protective equipment when performing this
procedure. Use suitable gloves and safety glasses. Cover exposed skin on
arms to prevent accidental contact with bleach solution that has been
applied to the concentrator.
3. Dispose of all accessories that are not suitable for reuse. This includes but
may not be limited to the oxygen tubing, tubing connectors, nasal cannula
and/or mask, oxygen outlet connector, and humidier bottle. Reusing
accessories marked for single use may cause risk of cross contamination or
loss of performance
4. Clean the exterior of the concentrator with a clean lint-free cloth. Heavy soil
should be removed with a clean lint-free cloth dampened with water. A soft
bristled brush dampened with water can be used to remove stubborn soil.
Dry the concentrator using a clean lint-free cloth if water was used to
remove soil.
5. Use 5.25% chlorine bleach (Clorox Regular Liquid Bleach or equivalent).
Mix one (1) part bleach with four (4) parts water in an appropriate clean
container. This ratio produces a one (1) part bleach to ve (5) total parts
solution (1:5). The total volume (amount) of solution required is determined
by the number of concentrators in need of disinfection. NOTE– An
alternate suitable disinfecting agent (e.g. Mikrobac® forte or Terralin®
Protect) may also be used. Follow disinfectant manufacturer’s instructions.
6. Apply the bleach solution in an even manner to the cabinet and power cord
using a clean lint-free cloth. The cloth should be dampened only and not
dripping of solution. Do not use a spray bottle to apply the solution. Do not
saturate the device with the solution. Take care that no solution enters the
vent areas on the concentrator base or door area on the back of the unit.
Avoid over-saturating the cabinet seams so that no solution residue builds
up in these areas. Avoid the caster wells located on the bottom of the unit.
7. Exposure time of the disinfectant solution should be 10 minutes minimum to
15 minutes maximum.
8. After the recommended exposure time, all surfaces of the concentrator
should be wiped with a clean lint-free cloth dampened with drinking quality
water no warmer than room temperature. Dry the unit with a dry, clean lint-
free cloth. This is to remove residue that may stain or leave a lm on the
unit, especially after repeated disinfections.
9. Check the cord, the plug on the back of the device, the power switch, the
fuse holder, and the indicator LEDs for possible damage. Replace all
damaged or worn components.
10. Replace the cabinet air lter on the back of the device.
11. Check the oxygen concentration. If the device is within specication, the
extended life intake bacteria lter does not need to be replaced between
patients. If the oxygen concentration is not within specication, the provider
should refer to the service manual section on Troubleshooting.
12. OPTIONAL INSIDE CLEANING: The concentrator must be disconnected
from the power supply for this step ONLY if the unit cabinet is being opened
for service: Open the concentrator and remove all dust deposits inside the
cabinet with an appropriate vacuum cleaner. Close the concentrator.
NOTE– There is no portion of the gas pathways through the concentrator that
could be contaminated with body uids under normal conditions. The device
patient connection may unintentionally become contaminated with expired gases
for a single fault condition i.e., a hose internal to the device becomes
disconnected. This condition will cause no ow out of the device and/or an alarm
condition. Should this occur, refer to the service manual for additional
instructions.
Cleaning
Recommended
cleaning interval
Number of
cleaning cycles *
Compatible cleaning
method
Outer Cabinet and
lter door vents
7 days 260 Water, use only a damp
cloth
Oxygen Outlet
Connector
7 days 104 Mild dish soap (2 tbsp)
and warm water (2
cups)
Cabinet Air Filter 7 days 260 Wipe with dry cloth, or
a cloth dampened with
water to remove dust
Air Filter 7 days 104 N/A
* number of cleaning cycles determined by recommended cleaning interval and
expected service life
Disinfection
NOTE–The disinfection process can only be completed by the manufacturer
or by an appropriately trained technician.
Recommended
disinfection
interval
Number of
disinfection
cycles *
Compatible
disinfection method
Cabinet, power cord Between patients 20 Microbac Forte or
Terralin®,1:10 chlorine
bleach (5.25%) and
water solution
Oxygen tubing, tubing
connectors, nasal cannula/
mask, oxygen outlet
connector, humidier
bottle, cabinet air lter
Do not clean,
replace between
patients
N/A N/A
Optional - Inside cabinet if
the unit cabinet is being
opened for service
Between patients N/A Remove dust with a
vacuum cleaner

LT-2355
12
MAINTENANCE
SERVICE AND MAINTENANCE GUIDANCE
DeVilbiss Oxygen Concentrator Preventive Maintenance/Service Guide
Model
Oxygen Purity
Verication
Compressor
Intake Filter
Internal
Compressor Filter**
Final HEPA
Filter ** Cabinet Air Filter Sieve Beds **
Compressor Cup
Seals **
1060AW Every 3-years or
between patients,
whichever comes
rst
Inspect when
Recurring
Reminder
illuminates on
control panel.
Replace if needed.
Inspect in
conjunction with
compressor
service. Replace if
needed
Inspect in
conjunction with
compressor
service. Replace if
needed
Inspect when
Recurring
Reminder
illuminates on
control panel and
wash as needed.
Replace if torn or
damaged. Replace
between patients.
When indicated by
device
performance below
specication for
oxygen purity,
operating
pressures and/or
other indications of
component wear
When indicated by
device
performance below
specication for
oxygen purity,
operating
pressures and/or
other indications of
component wear
** Sieve bed, compressor cup seal, internal compressor lter and nal HEPA lter service
should only be performed by appropriately trained and certied Drive DeVilbiss service
centers.
NOTE – This is a suggested maintenance and service schedule for home
oxygen providers. Individual maintenance requirements may vary based upon
local operating conditions, regulations, or other circumstances.
Service and maintenance should only be performed by appropriately trained
Drive DeVilbiss personnel and/or service centers or biomed technicians.
INITIAL INSPECTION
1. Upon receiving, examine the unit for external damage. If the unit appears to
have external damage, please contact DeVilbiss for assistance.
2. Check to be sure the cabinet air lter and the intake lter are in place.
3. Plug the unit into an electrical outlet, turn the unit ON and check the
audible/visual alarms. When the unit is turned ON, as part of the normal
start-up process, all ten (10) LEDs on the front panel should illuminate and
the audible alarm should sound when the unit is rst turned ON. If ANY
front panel LEDs DO NOT illuminate or the audible alarm DOES NOT
sound, the alert system is not functioning properly. Refer to the
Troubleshooting chart and contact your biomed technician if necessary.
4. Set the ow meter at the maximum recommended ow rate and allow the
unit to run for 20 minutes. The internal oxygen sensor monitors the oxygen
purity. If the oxygen is within specication, the Green Good Oxygen LED
will be illuminated. If the Yellow Low Oxygen LED is illuminated, refer to
Troubleshooting in the IFU, the Service Manual, or contact DeVilbiss for
assistance.
5. With unit still running, unplug to test the power fail alarm. If the power fail
alarm does not provide an audible alert, refer to the Service Manual or
contact DeVilbiss for assistance.
Oxygen Provider Preventive Maintenance
Guidance
NOTE – Scheduled maintenance should be performed in accordance with the
Preventive Maintenance/Service Guide table above or Between Patient Uses.
1. Discard all oxygen tubing, cannula/mask, oxygen outlet connector,
humidier bottle, and cabinet air lter.
2. Replace cabinet air lter and follow the Cleaning and Disinfection
Instructions.
3. Clean the concentrator cabinet and inspect/replace lters in accordance
with the table above.
4. Inspect all plugs, cords, and components. Replace any damaged or worn
components.
5. Check oxygen concentration with a calibrated oxygen analyzer and record
the oxygen percentage. If the concentration is not within specication, refer
to troubleshooting section of the IFU or the Service Manual.
6. Record the unit hours of use.
7. Verify Audible Alert and Indicator Lights at each service at startup and while
operating.
8. With unit still running, unplug to test the power fail alarm. If the power fail
alarm does not provide an audible alert, refer to the Service Manual or
contact DeVilbiss for assistance.

13
LT-2355
TROUBLESHOOTING
SYSTEM OPERATION
The Drive DeVilbiss Oxygen Concentrator uses a pressure swing adsorption
system. The air is drawn into the unit through air lters and into a double-head
compressor.
A pneumatic diagram of the system is shown on page 32.
The compressed air passes through a rotary valve, which is cycled at a pre-
determined rate, and is directed into one of two sieve beds. The sieve beds
contain molecular sieve material which is a synthetically-produced inorganic
silicate. It is very porous and has the unique ability to selectively adsorb nitrogen
from the air as it passes through the sieve bed.
As one bed is being pressurized, the other bed is quickly depressurized. This
allows the nitrogen that was adsorbed during its pressurization cycle to be
exhausted from the sieve material.
The nitrogen is released through an exhaust port located on the rotary valve
assembly. The port is connected to the exhaust mufer.
Also during each bed pressurization, a small amount of oxygen ows through an
orice from the pressurized bed into the depressurizing bed. This helps purge the
nitrogen from the depressurizing bed.
The beds will continue to be alternately pressurized and depressurized as the
unit operates.
Oxygen leaving the sieve beds is directed through a check valve to the
accumulator tank. A pressure regulator on the tank controls the oxygen pressure
as it leaves the accumulator and enters the ow meter. The ow meter allows the
oxygen ow to be controlled and adjusted to the level prescribed by the patient’s
physician. From the ow meter the oxygen passes through the nal bacteria lter
and nally the oxygen outlet port to the patient.
The Drive DeVilbiss Oxygen Concentrator operates on a timed cycle (2.5 sec. @
ows > 4.5 LPM) that is controlled by the PC board. The PC board will send
voltage to the valve causing it to shift and alternately pressurize the sieve beds.
The PC board also activates the electronic alert system. Low ow, system
abnormality, and power failure are indicated by audible and visible alerts. A high
pressure condition will be indicated with a “popping” type sound produced by
release of pressure from a pressure relief valve on the compressor head.
NORMAL OPERATING SEQUENCE
When the concentrator is turned “On,” the following cycling sequence can be
observed by attaching a pressure gauge to the accumulator tank test point.
1. The rotary valve is quickly cycled several times to relieve residual bed
pressure preventing a static condition in the compressor. This rapid cycling
only happens on start-up and is clearly heard as pressure is being quickly
exhausted several times. The pressure exhausts through an exhaust
mufer that is connected to the valve.
2. The PC board applies a short DC voltage signal to the valve. The valve will
stop for several seconds causing the right bed to pressurize rst while the
left bed depressurizes.
3. Voltage is again applied to the valve for a short time. The valve will stop for
approximately a second. During this time the sieve bed pressures are
equalized.
4. A short DC voltage signal is again applied to the valve. The valve will stop
for several seconds causing the left bed to pressurize while the right bed
depressurizes.
5. A short DC voltage signal is again applied to the valve. The valve will stop
for approximately a second. During this time, the sieve bed pressures are
equalized.
6. The cycle then repeats with step 2.

LT-2355
14
TROUBLESHOOTING
OVERVIEW OF ALARMS AND SERVICE INDICATORS
This device contains an alarm system which monitors the state of the device and alerts of abnormal operation, loss of essential performance or failures. Alarm conditions are
shown on the control panel. The alarm system functions are tested at power up by lighting all visual alarm indicators and sounding the audible alarm (beep).
All alarms are Low Priority Technical Alarms.
Alert or Alarm
Condition LED Icon Details of Alert or Alarm Condition Visual Alert or Alarm Audible Alarm Action
Power-On Test ALL Unit was just turned On; test of all
visual/audible indicators
All LEDs ON for a few seconds Audible indicator beeps for a
few seconds
Wait for unit to complete Power On
Test, up to 30 seconds.
Start-up Period
The unit has recently been started
and is in start-up mode, the output
ow of the oxygen is temporarily <
82%
Yellow Startup Low O2 LED ON
along with one O2% Status LED
No audible alarm during start-up
period
Wait for unit to nish start-up period, up
to 15 minutes
Normal Operation
Normal device operation (O2 >=
85.0%), no errors, startup period
over
Green Good O2 LED ON OFF Use device as desired
Check Cabinet Filter
Notication
Notication – Check Cabinet Filter.
LED turns ON every X days for 12
hours then restarts the timing cycle.
Yellow Check Cabinet Filter LED
ON
OFF Check Cabinet Filter and clean (wash/
dry) or replace as necessary.
Check Compressor
Intake Filter
Notication
Notication – Check Compres-sor
Intake Filter. LED turns ON every X
days for 12 hours then restarts the
timing cycle.
Yellow Check Compressor Intake
Filter LED ON
OFF Check Compressor Intake Filter and
replace if necessary
Low Oxygen Output
Concentration
Error – O2 below 85.0% (>=60.0%
< 85.0%), startup period over.
Yellow Low O2 LED ON The audible alarm is beeping
intermittingly. Alarm can be
silenced with the Audio Pause
button.
Continue to use device. Refer to
Troubleshooting to try to resolve
problem. If problem not resolved,
contact your Biomed Technician for
assistance.
Critical Low Oxygen
Output Concentration
Error – O2 below 60.0% (<60.0%),
startup period over.
Red Critical Low O2 LED ON.
Red Service Required LED ON
The audible alarm is beep-ing
intermittingly. Alarm can be
silenced with the Audio Pause
button.
Refer to Troubleshooting to try to
resolve problem. If problem not
resolved, contact your Technician for
assistance and to arrange for servicing
of the unit.
Audio Pause Off
Audio Pause not active (either no
current alarm condition or audible
alarm is actively sounding).
Audio Pause LED OFF If no current alarm, OFF.
If alarm condition is active,
audible alarm is beeping
intermittently. Alarm can be
silenced with the Audio Pause
button.
Correct the Alarm Condition if audible
alert is active (beeping).
Audio Pause On
Audio Pause active (symbol is
illuminated indicating active alarm
silenced).
Audio Pause LED ON OFF Correct the Alarm Condition to
deactivate audible alert and return to
normal operation.
Over Temperature
Warning – O2S gas over
temperature or internal over
temperature
Over Temperature LED ON The audible alarm is beeping
intermittingly. Alarm can be
silenced with the Audio Pause
button.
Refer to Troubleshooting to try to
resolve problem. If problem not
resolved, contact your Technician for
assistance and to arrange for servicing
of the unit.
Low Flow Rate
Warning – ow rate too low (no
ow or obstruction). Flow rate
below low ow threshold for 30
seconds
Low Flow LED ON The audible alarm is beep-ing
intermittingly. Alarm can be
silenced with the Audio Pause
button.
Refer to Troubleshooting to try to
resolve problem. If problem not
resolved, contact your Technician for
assistance and to arrange for servicing
of the unit.
High Flow Rate
Warning – ow rate too high. Error
due to corrupted settings, OSD
communication failure, fan not
running, motor error, or rotary valve
error.
Red Service Required LED ON The audible alarm is beep-ing
intermittingly. Alarm can be
silenced with the Audio Pause
button.
Refer to Troubleshooting to try to
resolve problem. If problem not
resolved, contact your Technician for
assistance and to arrange for servicing
of the unit.
Device Malfunction
The device is experiencing a
malfunction that requires servicing
to correct
Red Service Required LED light
is illuminated
The audible alarm is beeping
intermittingly. Alarm can be
silenced with the Audio Pause
button.
Contact your Technician for assistance
and to arrange for servicing of the unit
Power Failure
Power Failure Alarm – AC power
not present, microcontroller running
from a backup capacitor.
Red Service Required LED is
ashing
The audible alarm is beeping
intermittingly. Audio Pause is not
available during a power failure
alarm.
Turn unit off until electric power is
restored.

15
LT-2355
TROUBLESHOOTING
LED FAULT CODES -PC BOARD
Error
LED System Failure Description Possible Causes
1O2 Below 85% Sieve Beds, Rotary Valve, Compressor,
Leaks, Filter
2O2 below 60% Sieve Beds, Rotary Valve, Compressor,
Leaks, Filter
3Low O2S Flow Error Flow Meter Set below 1lpm - Increase Flow,
Leaks
4High O2S Flow Error Flow Meter set above 10lpm - Decrease
Flow setting
5High O2S Gas Temperature or
High Enclosure Temper-ature
Ambient or Room temperature too high –
move to a cooler location, Fan Running
Slow
6
Rotary Valve Error. The unit
enables the audible alert and
illuminates the Service Required
LED. If this error is detected, the
compressor will be shut off and
the system will not attempt to
rotate the valve (this pre-vents
damage to the stepper motor and
driver)
Rotary Valve
7Settings Error – Device settings
are corrupted at startup. PC Board
8O2S Communications Error PC Board
9FAN ERROR – THE FAN IS
NOT RUNNING Fan, Wire disconnected
10
Motor Error. If this error is
detected, the compressor and
rotary valve will be shut off.
MOTOR CONTROLLER,
COMPRESSOR
11
Over Pressure Error – An over
pressure condition has been
detected
SIEVE BEDS, ROTARY VALVE
12 Not Used N/A
13 Not Used N/A
SIMPLIFIED TROUBLESHOOTING
The key to simple troubleshooting is to recognize which type of problem exists
and select the most effective approach to solving the problem. The different
types of problems and the approaches for solutions are as follows:
Type I— Purity Issues (Low Purity Indicator Light
is activated and the audible alert may also sound.)
WARNING
Electric Shock Hazard. Extra care should be taken if it is necessary
to operate the unit with the cabinet removed.
WARNING
Mechanical Hazard. Keep ngers, loose clothing, etc. away when
working on compressor.
Observe the pressure cycle at the oxygen tank.
1. Connect a calibrated pressure gauge to the unit’s oxygen tank test point or
manifold. See accumulator pressure test on page 20.
2. Set the unit’s ow meter to 10 LPM.
3. Power the unit and allow it to operate for a minimum of 5 minutes before
observing the pressure cycle.
4. Compare the high pressures and low pressures to those expected for the
current elevation and use the following chart to nd the appropriate action.
All consecutive high pressures should be within 2 psi of each other and all
consecutive low pressures should be within 2 psi of each other.
NOTE– For normal system pressures refer to Specications.
NOTE– Check for leaks using a certied leak detection solution such as
Snoop® or equivalent (must not contain ethylene glycol). Apply leak test solution
to all ttings and hose connections with unit running. If an air leak is present, the
solution will bubble. All leaks should be repaired before putting the unit back in
service.
WARNING
Do not apply leak test solution to any part of the rotary valve or the
main PC Board assembly.
Pressure Diagnostic Chart
If Pressure Reading Is Do This To This
Higher than expected
(pressure relief valve may
be activated)
Replace Sieve beds (2)
Lower than expected
Inspect and replace, as
needed Filters
Inspect and correct or replace,
as needed Tubing connections
Troubleshoot
Compressor
See Component Testing,
Repair and Replacement
As expected Inspect and correct, as
needed
Leaks from sieve beds to
oxygen outlet port
Dropping too low during
cycle change Replace Check valves or manifold
Uneven - high pressures
& low pressures are not
consistent during cycle
Inspect and replace, as
needed Rotary valve wire harness
Troubleshoot or replace
Rotary valve or PC board.
See Component Testing,
Repair and Replacement

LT-2355
16
COMPONENT TESTING, REPAIR AND REPLACMENT
Type II—Operation Issues (Service Indicator
Light. The audible alert may also sound and the
pressure relief valve may be activated.)
WARNING
Electric Shock Hazard. Extra care should be taken if it is necessary
to operate the unit with the cabinet removed.
WARNING
Mechanical Hazard. Keep ngers, loose clothing, etc. away when
working on compressor.
NOTE– Check for leaks using a certied leak detection solution such as
Snoop® or equivalent (must not contain ethylene glycol). Apply leak test solution
to all ttings and hose connections with unit running. If an air leak is present, the
solution will bubble. All leaks should be repaired before putting the unit back in
service.
CAUTION
Do not apply leak test solution to any part of the rotary valve or the
main PC Board assembly.
Operation Alarm Chart
If this is happening It’s because of this Do this to resolve
Pressure relief valve has a
‘popping’ noise with
possible uneven tank
pressure.
Rotary valve not cycling
properly.
Test rotary valve. Refer to
page 28.
Continuous red light with a
pulsing audible alert while
compressor is operating.
Low ow alert – ow setting
below 1 lpm.
Correct setting and educate
user.
Continuous red light with a
continuous audible alert
and unit is warm to touch.
Internal temperature is too
high.
Move unit to cooler location.
Ensure unit vents are clear.
Ensure unit lters are clean.
Ensure cooling fan is
operating, replace as
needed.
Ensure there is proper
voltage to the unit. If voltage
is correct, replace capacitor
or compressor.
Continuous red light with a
pulsing audible alert and
fan is operating but
compressor is not.
Internal power failure to
compressor.
Test voltage at compressor
connector. If no voltage,
replace main wire harness. If
voltage present, replace
capacitor or compressor.
Pulsing audible alert and
compressor and fan not
operating.
NOTE– Units
manufactured in June,
2021 and subsequent will
have a blinking red light
and a pulsing audible alert.
External OR Internal power
failure.
Ensure voltage is correct
and / or the part is functional
for the following: AC outlet,
power cord, IEC connector
or cord connection, main
wire harness, circuit breaker;
correct as needed. If issue
persists, replace power
switch.
Pulsing audible alert and
compressor is operating
but fan is not.
Internal power failure at fan
wire harness or PC board.
Inspect wire harness and
replace harness or PC board
as needed.
Type III—The concentrator runs and
continues to cycle but has low oxygen
concentrations and no alarms are
activated.
This problem is similar to Type I in the way it is diagnosed/resolved. Observe
pressure cycle at oxygen tank as recommended in Type I.

17
LT-2355
TROUBLESHOOTING
OTHER SYMPTOMS POSSIBLE CAUSE POSSIBLE REMEDY
Pulsating air noise Intake filter not in place or defective Check filter and replace if necessary
Compressor intake hose disconnected Reconnect hose
Excessive noise Loose or defective motor mounts Replace motor mounts
Mounting plate loose Reinstall or replace mounting plates
Defective compressor Replace compressor
Defective cooling fan Replace cooling fan
Fluctuating oxygen ow Occluded humidier Clean or replace humidier
Use of improper humidier Use only a bubble-type humidier designed for use with ows up to 10
liters per minute and 20 psi pressure
Occluded filters Clean or replace filters
Occluded or defective cannula and tubing Detach cannula from oxygen delivery tubing. If proper flow is not
attained, check tubing for kinks or other obstructions. Clean or straighten
as required or replace tubing if necessary
Use of excess oxygen tubing The unit is designed to deliver 10 lpm with a cannula on 50 feet (15
meters) of approximately 5/32” (4 mm) inside diameter tubing. Smaller
diameter tubing or the addition of any other ow restriction may prevent
obtaining the desired ow rate.
Defective ow meter Replace ow meter
Leak in system Check for leaks in all hoses and ttings
Defective compressor Replace compressor
Defective compressor reed valve Replace compressor reed valve
Defective check valve Replace check valve or manifold
Pressure regulator not adjusted properly or defective Adjust or replace pressure regulator
Little or no oxygen ow Flow meter not adjusted properly Adjust ow meter
Hose disconnected to ow meter Reconnect hose
Oxygen delivery tubing is kinked or blocked Straighten tubing or remove obstruction
Occluded humidier Clean or replace humidier
Low oxygen concentration Leak in system Check for leaks in all hoses and ttings
Defective sieve bed check valve Replace check valve or manifold
Defective compressor reed valve Replace compressor reed valve
Defective compressor Replace compressor
Rotary valve not operating correctly Replace valve
Occluded lters Clean or replace lters
Contaminated sieve beds Replace sieve beds
Audible alarm does not sound during power
failure
Unit has not been used for an extended period of time.
NOTE–If the concentrator has been unused for an
extended period, the unit must run for a minimum of 2
minutes before the power fail alarm will activate.
Allow unit to run for 20 minutes and retry
Defective PC board Replace PC board
Defective power switch Replace power switch
Defective wire harness Replace wire harness
Audible alarm does not sound when unit is
turned “On”
Defective PC board Replace PC board
Pressure relief valve activated “popping” sound PC board connectors not properly latched Be sure tabs are pushed completely into place
Defective PC board Replace PC board
Defective rotary valve Replace valve
LED(s) do not not illuminate when unit is turned
“On”
PC board connectors not properly latched Be sure tabs are pushed completely into place
Defective PC board Replace PC board
Visible Alarm Audible Alarm Compressor
OFF OFF ON
TROUBLESHOOTING CHART A

LT-2355
18
TROUBLESHOOTING
TROUBLESHOOTING CHART B
Visible Alarm Audible Alarm Compressor
Blinking Pulsing OFF
OTHER SYMPTOMS POSSIBLE CAUSE POSSIBLE REMEDY
Fan off Line cord not properly installed or defective Check that the power cord is properly attached to the IEC
connector and is fully inserted into the receptacle. If still does not
work, replace power cord.
No power at receptacle Check building circuit breaker or fuse, or have house wiring
checked by qualified electrician. Circuit may be fully loaded with
other appliances and another receptacle may be required.
Defective power switch Replace power switch
Defective circuit breaker Replace circuit breaker
TROUBLESHOOTING CHART C
Visible Alarm Audible Alarm Compressor
Blinking Pulsing ON
OTHER SYMPTOMS POSSIBLE CAUSE POSSIBLE REMEDY
Fan and compressor operating
Pressure relief valve activated – “popping”
sound
Connector on PC board not connected Connect connector
Defective PC board Replace PC board
Defective valve or valve wire harness Replace valve or valve wire harness
TROUBLESHOOTING CHART D
Visible Alarm Audible Alarm Compressor
ON ON OFF
OTHER SYMPTOMS POSSIBLE CAUSE POSSIBLE REMEDY
Fan operating Main wiring harness disconnected/defective Reconnect/replace wiring harness
Loose compressor wire Tighten or attach wire
Defective compressor Replace compressor
Unit warm to the touch and cannot be
restarted for several minutes
Compressor overheated due to:
1. Occluded lters 1. Clean or replace lters
2. Restricted input or output air passage 2. Remove obstruction
3. Low or high line voltage 3. Check line voltage; use alternate circuit independent of other
appliances
Defective cooling fan Replace cooling fan
Defective compressor Replace compressor

19
LT-2355
TROUBLESHOOTING
TROUBLESHOOTING CHART E
Visible Alarm Audible Alarm Compressor
ON ON ON
OTHER SYMPTOMS POSSIBLE CAUSE POSSIBLE REMEDY
Fluctuating or no ow System pressure below 20 psi (138 kPa) due to:
1. Leak in system 1. Check for leaks in all hoses and ttings
2. Defective compressor 2. Replace compressor
TROUBLESHOOTING CHART F
Visible Alarm Audible Alarm Compressor
See Below See Below ON
OTHER SYMPTOMS POSSIBLE CAUSE POSSIBLE REMEDY
Yellow Low Oxygen Light and the Red
Service Required Light are illuminated
accompanied by a beeping audible alarm
Oxygen level is low* Check concentration with an oxygen analyzer. If the concentration is
within specication, replace the PC board. If the concentration is low,
refer to low oxygen concentration symptom in Troubleshooting Chart A.
Red Service Required light is illuminated
with beeping audible alarm.
Defective OSD Replace PC board.
Yellow Low Oxygen light is illuminated. Oxygen level is low* Check concentration with an oxygen analyzer. If the concentration is
within specication, replace the PC board. If the concentration is low,
refer to low oxygen concentration symptom in Troubleshooting Chart A.
Yellow Low Oxygen light is illuminated and
an intermittent audible alarm sounds every
few seconds.
Oxygen level is low* Check concentration with an oxygen analyzer. If the concentration is
within specication, replace the PC board. If the concentration is low,
refer to low oxygen concentration symptom in Troubleshooting Chart A.
*Refer to Alerts page for oxygen purity levels.
NOTE-If unit does not run or perform to specication, verify the proper AC input voltage and frequency are being used.

LT-2355
20
COMPONENT TESTING, REPAIR AND REPLACMENT
PROPER REPAIR PROCEDURES
WARNING
When servicing the Drive DeVilbiss Oxygen Concentrator, be
absolutely certain that the correct tools are used and that the parts
are free of oil and grease or any material not compatible with oxygen.
Teon®tape is recommended and must be applied to the male
threads omitting the rst thread to eliminate the possibility of tape
particles entering the oxygen system.
Electric shock hazard. Do not remove cabinet. The cabinet should
only be removed by a qualied Drive DeVilbiss homecare provider.
Disconnect the power cord from the wall outlet before attempting
repairs on the unit. Extra care should be taken if it is necessary to
operate the unit with the cabinet removed.
NOTE–Be sure to read all of the steps involved before beginning any of the
procedures in this manual.
NOTE– After repairing or replacing a component check the oxygen
concentration and test for leaks.
The Drive DeVilbiss Oxygen Concentrator is designed for ease of service. To aid
service personnel a Service Kit (part #444-501) is available which contains the
necessary gauges, tools, and testing instruments to properly service the oxygen
concentrator. See list below.
In addition, you will also need an oxygen analyzer (part #R217P62) to
periodically check oxygen concentration levels and leak test solution.
The following parts are included in the Service Kit:
1Slotted bit
1#1 Phillips bit
1#2 Phillips bit
1Crescent wrench
18” Duckbill pliers
1 Voltmeter
2Pressure/Vacuum gauge
1Tool box
2Test Fittings
1Torx screwdriver w/bits
1Channel Lock Pliers
11/4” Ratchet wrench
110mm Socket l/4” Drive
11/4” Drive extension
1Plastic storage case
CABINET REMOVAL
The majority of all the servicing and repairs can be done without removing the
front cabinet completely. However, it may be loosened or removed to gain access
to the components behind it.
To remove back cabinet:
1. Unplug the unit from the wall outlet.
2. Remove the six screws that secure the back cabinet – 2 behind handle, 2
near the bottom, and 1 on each side.
NOTE– All six screws are the same size.
3. Remove the back cabinet by sliding it toward the rear until clear.
4. To reassemble, reverse steps 2-3.
To loosen the front cabinet:
5. Remove the two screws (located directly above the intake bacteria lter)
that hold the front cabinet to the unit’s internal structure.
6. Remove the screw located near the bottom of the recessed humidier
compartment on the front of the unit. The top of the front cabinet can now
be tilted forward to allow access to the components behind it.
To remove the front cabinet completely:
7. Tilt cabinet forward.
8. Before disconnecting the wires from the power switch note their positions
in order to reconnect them properly; then disconnect the wires.
9. Disconnect the hose at the bottom of the ow meter and remove cabinet.
10. To reassemble reverse steps 5 – 9 making sure bottom of cabinet is
inserted securely in base of unit.
NOTE– Two types of cabinet screws are used in the 1060 models, thread-
forming screws and machine screws. Do not overtighten the thread-forming
screws; they should be torqued to 18 –20 in-lbs. The machine screws have much
ner threads and are used in conjunction with brass inserts that are molded into
the cabinet part; they should be torqued to 20 – 25 in-lbs.
When replacing a cabinet part such as the front cover, base or compressor box
be sure to use the correct screw. The ne threaded machine screws should
always be used if there is a brass insert. Thread-forming screws should be used
if there is no brass insert molded into the cabinet part.
These screws are not interchangeable, so be sure to order the correct part
number. See gure below.
Thread-forming
Cabinet Screw
(525DD-636)
Machine Cabinet
Screw (525DD-628)
ACCUMULATOR TANK
The oxygen accumulator tank holds the concentrated oxygen and releases it to
the patient at a specied liter ow.
ACCUMULATOR PRESSURE TEST
To check accumulator pressures:
1. Make sure the unit is “Off.”
2. Use the Cabinet Removal instructions listed previously to open the unit for
testing.
3. Use the pressure gauge (part #PVO2D-601) and pressure test assembly
(part #303DZ-637) included in the Service Kit.
Pressure Gauge
Pressure Test
Assembly
4. Remove the tubing cap from the accumulator tank tting or from the
manifold attached to the tank, and attach the 1/16" (1.6 mm) diameter
tubing from the gauge to the tting just vacated above.
See Figures below showing pressures being checked at accumulator tank