AirSep® is a registered trademark of AirSep Corporation.
NewLife® Elite and NewLife® are registered trademarks of AirSep Corporation.
MN105-1 Rev. C 02/14
AirSep® Corporation
®
NewLife
Elite Service Manual
Table of Contents
Section 1.0
Introduction
1.1 Equipment Provider Responsibility 1-1
1.2 Important Notice and Symbol Explanations 1-2
1.3 Functional Specications 1-4
Section 2.0
Operation Check
and Oxygen
Concentration Test
2.1 Description of Operation 2-1
2.2 Operation Check 2-1
2.3 Alarm System 2-2
2.3.1 Battery Test 2-2
2.3.2 Power Failure Alarm Test 2-2
2.4 Oxygen Concentration Test and Specication 2-3
Section 3.0
Patient Instructions
3.1 General Instructions 3-1
3.2 Routine Maintenance by the Patient 3-1
3.2.1 Cleaning the Air Intake
Gross Particle Filter 3-1
3.2.2 Checking the Alarm System Battery 3-2
Section 4.0
Equipment Provider
Maintenance
4.1 Routine Maintenance 4-1
4.1.1 Air Intake Gross Particle Filter/GPF 4-1
4.1.2 Product Filter Replacement 4-1
4.1.3 Optional Filter Replacement 4-2
4.1.4 Battery Replacement 4-2
4.1.5 Recording Maintenance 4-3
4.2 Cleaning and Infection Control 4-3
4.2.1 Preparing for New Patient Use 4-4
AirSep® Corporation
i – table of contents
®
NewLife
Elite Service Manual
Section 5.0
Service
5.1 Components 5-1
5.2 Cabinet Removal 5-1
5.2.1 Removing Side Panel(s) 5-1
5.2.2 Removing Back Panel 5-1
5.2.3 Removing Lower Front Cover 5-1
5.2.4 Removing Control Panel 5-1
5.2.5 Superstructure 5-1
5.2.6 Caster Replacement 5-2
5.3 Compressor 5-2
5.3.1 Compressor Replacement 5-3
5.3.2 Capacitor Replacement 5-4
5.4 Solenoid Valves 5-4
5.4.1 Feed or Waste Valve Rebuilding 5-4
5.4.2 Feed or Waste Valve Reassembly 5-5
5.4.3 Solenoid Valve Coil Replacement 5-5
5.5 Sieve Bed Replacement 5-6
5.5.1 Sieve Bed Removal 5-6
5.5.2 Sieve Bed Installation 5-7
5.6 Cabinet Fan Replacement 5-7
5.7 Circuit Board Replacement 5-8
5.7.1 Circuit Board Removal 5-8
5.7.2 Circuit Board Installation 5-9
5.8 Product Regulator Check and Setting 5-10
5.8.1 Setting Product Regulator for
Normal Operation 5-10
5.8.2 Product Regulator Lockout 5-10
5.8.3 Back Pressure Correction at 5 lpm 5-11
5.8.4 Product Regulator Cleaning or
Rebuilding 5-12
5.9 High or Low Pressure Switch Replacement
(In Equipped Units) 5-13
5.10 Circuit Breaker Replacement 5-14
5.10.1 Circuit Breaker Removal 5-14
5.10.2 Circuit Breaker Installation 5-14
5.11 ON/OFF Power Switch Replacement 5-14
5.11.1 ON/OFF Power Switch Removal 5-14
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AirSep® Corporation
®
NewLife
5.11.2 ON/OFF Power Switch Installation 5-15
5.12 Buzzer Replacement 5-15
5.13 Hour Meter Replacement 5-15
5.14 Flowmeter Replacement 5-16
5.14.1 Flowmeter Removal 5-16
5.14.2 Flowmeter Installation 5-16
5.15 Power Cord Replacement 5-16
Elite Service Manual
Section 6.0
Troubleshooting
6.1 Operating Pressure Test 6-1
6.1.1 High Operating Pressure 6-1
6.1.2 Low Operating Pressure 6-2
6.2 General Troubleshooting 6-2
6.3 Troubleshooting Chart 6-4
6.4 Tool Kit and Pressure Test Gauge 6-7
Appendix
Exploded
Drawings
Figure 2: Main Structure Assembly A-2
Figure 3: Base and Cabinet Components A-3
Figure 4: Test Block Assembly A-4
Figure 5: Valve Block Assembly A-5
Figure 6: Compressor Assembly A-6
Figure 7: Adsorption Bed Assembly A-7
Figure 1: Control Panel Assembly A-1
AirSep® Corporation
iii – table of contents
1.0 Introduction
1.1 Equipment Provider Responsibility
All Equipment Providers of the NewLife® Elite/NewLife® Oxygen Concentrator
must assume responsibilities for handling, operational check-out, patient
instruction, and maintenance. These responsibilities are outlined below and
throughout this manual.
NewLife
®
Elite Service Manual
As an Equipment Provider, you must do all of the following:
Inspect the condition of each NewLife unit immediately upon
delivery to your business location. Note any sign of damage, external
or internal, on the delivery receipt, and report it directly to both the
freight company and AirSep Corporation immediately.
Check the operation of each NewLife before delivery to a patient.
Always operate the unit for a reasonable length of time and check that
the oxygen concentration level is within specications as referred to in
Section 2.4. (Test the battery and power disconnect alarm as described
in Section 2.3 of this manual.)
Deliver NewLife units only to patients authorized by a physician’s
prescription. The NewLife must not be used as a life-supporting
device. A backup supply of oxygen must be available.
Instruct patients how to use the NewLife in conjunction with the
Patient Manual.
Instruct patients to notify their physicians and/or Equipment
Providers if they experience any signs of discomfort.
Instruct each patient how to perform routine maintenance of the air
intake gross particle lter and how to check the alarm system battery.
(Refer to Section 3.2.)
Be available to service each patient at any time.
Maintain the NewLife in accordance with Section 4.0.
Repair components and replace parts only as outlined in this
manual. Use only AirSep parts for replacement in NewLife Oxygen
Concentrators.
WARNING
NewLife units must not be used for or with any lifesupporting applications. Geriatric, pediatric, or any other
patients unable to communicate discomfort while using
this machine may re quire additional monitoring. Advise
patients to immediately notify their Equipment Providers
and/or physicians in case of an alarm or any discomfort.
AirSep® Corporation
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NewLife
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Elite Service Manual
1.2 Important Notice and Symbol Explanations
As you read the manual, pay special attention to the WARNING, CAUTION, and
NOTE messages. They identify safety guidelines or other important information
as follows:
WARNING:Describes a hazard or unsafe practice that can result in
severe bodily injury or death.
CAUTION:Describes a hazard or unsafe practice that can result in
minor bodily injury or property damage.
NOTE:Provides information important enough to em phasize or
repeat.
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®
NewLife
Elite Service Manual
The following harmonized symbols (pictograms), used for nonEnglish language countries, will be located on the exterior of
the NewLife unit:
Read the Patient Instruction Manual.
No smoking within ve feet of this device, oxygen-
carrying tubing, or accessories.
No open ames within ve feet of this device, oxygen-
carrying tubing, or accessories.
No oil, grease or petroleum-based products on or near
the unit.
Oxygen outlet
Oxygen alarm
Nebulizer option
AirSep® Corporation
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NewLife
®
Elite Service Manual
1.3FunctionalSpecications
Dimensions:28.5 in. high, 15.7 in. wide, 14.5 in. deep
Concentration:1–3 liters per minute at 95% + 0.5/ - 3%
4 liters per minute at 92% + 3.5/ - 3%
5 liters per minute at 90% + 5.5/ - 3%
Response Time: Allow 5 minutes to attain maximum oxygen
concentration.
Positioning:
0459
Operate the unit in an upright position, maintaining
at least six inches of open space on all sides for
ventilation.
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AirSep® Corporation
®
NewLife
Elite Service Manual
2.0 Operation Check and Oxygen Concentration Test
2.1 Description of Operation
Air enters the NewLife Oxygen Concentrator through an external air intake
gross particulate lter. This ltered air enters the compressor via a suction
resonator, which quiets the compressor’s suction sound. Pressurized air then
exits the compressor and passes through a heat exchanger. The heat exchanger
reduces the temperature of the com pressed air. Next, a two-way solenoid
feed valve directs the air into one of two sieve beds that contain molecular
sieve. The unique property of molecular sieve enables it to physically attract
(adsorb) nitrogen when air passes through this material, thus producing high
concentration oxygen.
There are two sieve beds: while one produces high concentration oxygen, the
other is purged of the nitrogen it adsorbed (collected) while it made oxygen.
Each adsorber produces oxygen for approximately eight seconds and delivers it
to the product tank. Oxygen exits the product tank through a pressure regulator,
product lter, ow control valve, owmeter, and nally exits the unit. The ow
control valve, which is part of the owmeter, controls the amount of oxygen
delivered to the patient. The NewLife unit delivers up to 95.5% pure oxygen at
ow rates from 1–5 lpm.
NOTE: NewLife Elite OxiSilent™ option incorporates an additional felt intake
lter prior to air entering the compressor.
2.2 Operation Check
AirSep tests every NewLife Oxygen Concentrator thoroughly after manufac-
ture. You must perform the following test to ensure that no damage occurred
in shipping or handling.
1 Open and inspect all cartons (that contain units) upon delivery. Unpack
the unit and remove it from the carton. Inspect the unit itself for
damage. If the exterior of a unit’s carton is damaged, or the unit itself
is damaged, note it on the freight bill signed by the driver.
2 Plug in the power cord of the unit, and set the ON/OFF switch to the
ON position. Check to see that the following occurs:
a. A continuous alarm loudly sounds for approximately
ve seconds to indicate that the battery for the alarm
is good. See the trou bleshooting chart in Section 6.0 of
this manual if the unit’s alarm does anything other than
sound loudly for ve seconds.
AirSep® Corporation
b. The compressor runs. Listen for the sound.
c. Exhaust air ows out of the bottom of the unit.
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NewLife
®
Elite Service Manual
d. OPTIONAL: The Oxygen Monitor’s amber light
remains on until the oxygen concentration reaches 85%
± 3% (approximately two minutes).
3 Turn the owmeter adjustment knob counterclockwise until it stops
(wide open).
The maximum ow should register 5.5 lpm (the 5.5 lpm line should
appear to split the middle of the owmeter ball) with no connections
at the oxygen outlet. If not, refer to Section 5.8.1 to set the product
regulator.
4 Perform an oxygen concentration test, as described in Section 2.4.
2.3 Alarm System
The NewLife Oxygen Concentrator is equipped with a battery-powered alarm
system, which sounds a continuous and loud alarm when a power failure
occurs. It sounds an intermittent alarm if the high or low pressure indicators
are activated or if the optional oxygen monitor detects lower than therapeutic
levels of oxygen concentration. The alarm remains on until you correct the alarm
condition or you set the ON/OFF switch to the OFF position. Refer to Section
6.0 for a list of probable alarm causes.
2.3.1 Battery Test
Each time the NewLife unit is turned on, a ve-second audible alarm
sounds to indicate the condition of the battery.
NOTE
The audio alarm must sound loudly for
approximately ve seconds each time the unit is
turned to ON to indicate the bat tery is in good
condition.
2.3.2 Power Failure Alarm Test
To test the power failure alarm, take the following step:
Unplug the unit, and set the ON/ OFF switch to the ON position.
This should immediately activate the audio alarm. If it does not, refer
to the troubleshooting chart in Section 6.0 of this manual.
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®
NewLife
Elite Service Manual
2.4OxygenConcentrationTestandSpecication
To ensure that the unit’s output of oxygen is within specication, you
must perform a test of oxygen concentration. Test the unit upon delivery
to a patient and at periodic intervals. Equipment Providers, based on
their expertise and documentation, may establish and implement their
own protocol to check oxygen concentration. The interval established
may be longer or shorter than 90 days, which is AirSep’s default time
period for providers who do not choose to establish their own protocol.
1 If an oxygen humidier bottle is used, remove it from the oxygen
outlet.
2 Connect a calibrated oxygen concentration analyzer to the oxygen
outlet.
3 Verify that the product ow rate delivered by the unit matches the
patient’s prescription and does not exceed the capacity of the unit.
4 Set the unit’s ON/OFF power switch to the ON position. (It takes
approximately five minutes for the oxygen concentration to
stabilize.) Take oxygen concentration readings every 60 seconds
until the analyzer shows that two consecutive readings are the
same.
5 Disconnect the oxygen analyzer, and reconnect the humidier
bottle (if used) and any other equipment/ accessories that may be
required.
6 Adjust the owmeter adjustment knob to the prescribed level.
NOTE
Do not measure oxygen concentration output
after the product stream passes through a
humidier bottle, or erroneous readings will
result.
AirSep NewLife Oxygen Concentration Specications
Liter Flow SpecicationIn Spec
1–3 lpm 95% + 0.5/ - 3% 92% or higher
4 lpm 92% + 3.5/ - 3% 89% or higher
AirSep® Corporation
5 lpm 90% + 5.5/ - 3% 87% or higher
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NewLife
Elite Service Manual
3.0 Patient Instructions
3.1 General Instructions
It is important that patients thoroughly understand how to operate the AirSep
NewLife unit. This enables proper treatment as prescribed by a qualied,
licensed physician. You must explain that the purpose of this therapy is to
alleviate symptoms. If patients experience any discomfort or the unit alarms,
they must notify their Equipment Provider and/or physician immediately.
You, as the Equipment Provider, are responsible to see that each patient receives
the Patient Manual. Locate the Patient Manual in the pocket on the back of each
unit. Explain each step in the operation of the unit to the patient in reference to
this manual.
3.2 Routine Maintenance by the Patient
To ensure accurate output and efcient operation of the unit, the patient must
perform two simple routine maintenance tasks:
Clean the air intake gross particle lter
Check the alarm system battery
3.2.1 Cleaning the Air Intake Gross Particle Filter
NOTE
The patient must clean this lter weekly, as
described below. The lter may require daily
cleaning if the NewLife unit operates in a harsh
environment such as a house heated by wood,
kerosene, or oil, or one with excessive cigarette
smoke.
1 Remove the dirty air intake gross particle lter from the back
of the NewLife unit, and install the clean lter stored in the
pocket on the back of the unit.
2 Wash the dirty lter in warm soapy water, and rinse.
3-1
3Use a soft absorbent towel to remove excess water.
4 Place the clean air intake gross particle lter in the pocket on
the back of the unit.
AirSep® Corporation
®
NewLife
Elite Service Manual
3.2.2 Checking the Alarm System Battery
The alarm system battery is tested each time the ON/OFF switch is
set to the ON position. A continuous alarm sounds for approxi mately
ve seconds to indicate a good battery. If the alarm does anything
other than sound loudly for ve seconds, instruct the patient to call
the Equipment Provider immediately.
AirSep® Corporation
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NewLife
Elite Service Manual
4.0 Provider Maintenance
4.1 Routine Maintenance
The NewLife Elite unit has two or three lters and a 9-volt battery that require
sched uled maintenance and replacement.
To ensure that the unit’s output of oxygen is within specication, you must
perform a test of oxygen concentration. Test the unit upon delivery to a patient
and at periodic intervals. Equipment Providers, based on their expertise and
documentation, may establish and implement their own protocol to check
oxygen concentration. The interval established may be longer or shorter than
90 days, which is AirSep’s default time period for providers who do not choose
to establish their own protocol.
AirSep does not require preventative maintenance on the concentrator. You
do not need to perform any maintenance as long as the NewLife unit remains
within specications at the desired ow rate.
4.1.1 Air Intake Gross Particle Filter/GPF
The external air intake gross particle lter is located on the back of the
unit. You can easily remove it by hand. Instruct the patient to clean
this lter weekly. (Refer to Section 3.2.1.)
NOTE
The lter may require more frequent cleaning if
the NewLife unit operates in a harsh environ ment
such as a house heated by wood, kerosene, or oil,
or one with excessive cooking or cigarette smoke.
4.1.2 Product Filter Replacement
The product lter must be replaced after every 25,000 hours of use.
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2 Remove the side panels to locate the product lter.
NOTE
Observe the position of the lter before
removal.
4-1
3Cut the tie-wraps, and separate the green tubing from both
sides of the lter.
AirSep® Corporation
4 Install the new lter with the inlet side in the same position as
before. Push the tubing together so that the tubing overlaps
the product lter connections, and secure it with the tie-wraps.
5 Record information about the product lter replacement on
the History Record Label, which is discussed in Section 4.1.5.
6Reconnect the back and side panels.
4.1.3 Optional Filter Replacement
NewLife
®
Elite Service Manual
The optional internal felt lter requires changing every 5,000 hours of
use. See below on instructions for changing the lter.
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2 Remove right side panel to locate the felt intake lter.
3 Remove lter in the unit, and replace with a new lter.
4 Remove left side panel and record information about the lter
replacement on the History Record Label.
5Reconnect both side panels.
4.1.4 Battery Replacement
Each time the NewLife unit is turned on, the alarm must sound loudly
for approximately ve seconds to indicate a good battery. An alarm
that does anything other than sound loudly for ve seconds indicates
a weak battery and requires replacement.
AirSep® Corporation
To replace the battery, take the following steps:
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2Remove the left side panel.
3Lift the battery out of the battery holder.
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NewLife
®
Elite Service Manual
4.1.5 Recording Maintenance
As the Equipment Provider, you can record all routine maintenance
A History Record Label is located inside the unit. Keep this label
4Install the new battery, maintaining proper polarity, and
secure it with the Velcro strap.
5Set the ON/OFF switch to the ON position to test the alarm.
6Record the battery replacement information on the History
Record Label.
7Reconnect the side panel.
and repairs performed on the NewLife unit, including hours and dates
of service.
current to avoid unnecessary replacement of parts (i.e., product lter
and battery).
4.2 Cleaning and Infection Control
With the growing concern about possible cross infection from home oxygen
equipment (i.e., oxygen concentrators) from one home care pa tient to another,
a clarication on this topic is necessary.
The organisms of most concern are M. Tuberculosis, HIV, and Viral Hepatitis.
These are potentially pathogenic.
Tuberculosis can survive outside of the human body, but its mode of transmission
is by droplet nuclei. When infected individuals cough, they release droplet nuclei
into the air, and these carry the Tuberculosis organism. These droplet nuclei
may be breathed in by another person, but prolonged exposure to the infected
person is usually necessary for infection to occur.
HIV and Viral Hepatitis are both viruses, which are not living cells themselves
but which can duplicate when in a living “host” cell. Both of these organisms
are usually passed on by person-to-person contact, and both need to be in the
human body to survive. Once outside the body, viruses do not survive.
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AirSep® Corporation
®
NewLife
Elite Service Manual
4.2.1 Preparing for New Patient Use
When you remove the NewLife from a patient’s home, always dispose
of the used nasal cannula and humidier bottle. Clean the exterior of
the NewLife with a soapy water solution or commercial cleaner to
remove any gross debris, organic or otherwise. Be careful not to get
any liquid into the interior of the unit.
Next, clean the exterior with either a common chemical disinfec tant
or a bleach solution* before other patients use the unit. For the bleach
solution, wear eye and skin protection to prevent exposure to the
chlorine. Allow the NewLife to air dry, and then retest it before you
return it to inventory.
Clean the air inlet gross particle lter with warm soapy water between
each patient’s use. Clean this lter at least once per week, depending
on the environment, during normal operation.
Change the product lter after 25,000 hours of use. It is not necessary
to change this lter between patients even if the pre vious patient had
a communicable disease or infection.
________________________________
*Make the bleach solution a 1:100 dilution of 5.25% sodium hypochlorite. Mix one part household bleach (e.g.,
Clorox) with 99 parts cold tap water. To measure the solution easily, take 1/4 cup of household bleach, and mix it
with a gallon of cold tap water. Allow the mixture to sit on potentially contaminated surfaces for 10 minutes.
AirSep® Corporation
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NewLife
Elite Service Manual
5.0 Service
5.1 Components
The design of the AirSep NewLife Oxygen Concentrator allows for easy access
and removal of most components. This allows you to perform scheduled
maintenance, repair, and replacement of parts with minimal time and effort.
CAUTION
NOTE
For your safety, be sure to set the ON/OFF switch to
the OFF position and unplug the power cord of the unit
before you service the NewLife Oxygen Concentrator.
Record all scheduled maintenance. (Refer to Section 4.0.)
5.2 Cabinet Removal
5.2.1 Removing Side Panel(s)
To remove one or both side panels, unscrew the 1/4 turn fas tener(s)
and remove the panel(s).
5.2.2 Removing Back Panel
Remove both side panels, and lift off the back panel. Make sure the
power cord can pass freely through the power cord cutout.
5.2.3 Removing Lower Front Cover
Firmly grasp panel with both hands, and slightly bow panel outward
to remove.
5.2.4 Removing Control Panel
Four screws hold the control panel in place. Remove them and the
control panel to re-install or replace if necessary.
5.2.5 Superstructure
5-1
The weight and forces of the internal components rest solely on three
parts: the superstructure, compressor plate, and the base. These parts
were specially designed and formed. They should never require
replacement under normal use.
AirSep® Corporation
®
NewLife
Elite Service Manual
5.2.6 Caster Replacement
1 Remove the cabinet panels to expose the caster nut.
2 Remove the caster nut with a 9/16-inch socket.
Use an extension for the two front caster nut removals.
3 Install the new caster and washer, and tighten the nut.
4 Reconnect the cabinet panels.
5.3 Compressor
The compressor is the “pump” within the oxygen concentrator that pushes the
room air into the bottom of the sieve beds. This allows oxygen to ow out of
the top.
Two different aspects of the compressor cause concern: the output and the sound
level.
Output
Compressor output refers to how much compressed air the com pressor
can produce. This depends upon the model of the compressor, stroke
size, bore size and cup seal condition. The cup seals form the seal
between the piston and the cylinder wall. As the cup seals wear, the
compressor’s output begins to gradually decrease. This reduction in
compressor output results in less air for the sieve beds. Therefore, the
production of oxygen decreases.
Since this drop in oxygen production occurs over a long period of
time, preventative maintenance on the compressor is not required.
You can continue a patient’s therapy on the NewLife unit as long as
that unit’s oxygen concentration level at the prescribed liter ow rate
is within AirSep’s specications. Refer to Section 2.4.
Sound Level
The condition of the compressor’s bearings mainly determine its sound
level.
AirSep® Corporation
There are four bearings located within the compressor that allow the
inner components of the compressor to rotate. If the bearings wear to
the point that they become noisy, the compressor becomes noticeably
loud and needs servicing.
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5.3.1 Compressor Replacement
Compressor Assembly Removal
To remove the compressor assembly for exchange, follow the steps
listed below:
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2 Remove the side and lower front panels.
3 Disconnect the suction tube.
4 Disconnect the blue compressor lead at the terminal strip and
the brown lead at the temperature switch.
5Disconnect the two leads to the capacitor and remove if
necessary.
6 Disconnect the compression tting for the heat exchanger
located at the bottom center of the compressor.
7Remove the two screws that connect the compressor plate to
the base of the unit, and lift up and slide out the compressor
assem bly.
8 If needed, remove compressor from the plate by removing the
four compressor bolts.
Compressor Assembly Installation
To install the rebuilt compressor assembly, follow the steps listed below:
1 Perform the compressor removal procedure in reverse or der.
2 Make sure to position the compressor’s lead wires behind the
braided suction tube.
3Leak test all connections.
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AirSep® Corporation
5.3.2 Capacitor Replacement
The capacitor starts the compressor. If the compressor cannot start, the
capacitor may be defective and require replacement. To replace the
capacitor, take the following steps:
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2 Remove the side and lower front panels.
3 Disconnect the two leads to the capacitor and slide capacitor
out of the tie wrap holding it in place.
4To install the new capacitor, connect the leads and slide the
capacitor into the tie wrap holding it in place.
5.4 Solenoid Valves
NewLife
®
Elite Service Manual
The NewLife uses 5 two-way solenoid valves: two feed, two waste, and one
equalization. Each valve has an open (energized) and closed (de-energized)
position. As the NewLife operates, two valves are always energized.
The solenoid valves of the NewLife unit require no scheduled maintenance.
If a valve becomes noisy, you can easily replace the internal valve parts. To
identify the noisy valve, observe which green circuit board light illuminates
at the time of the noise. The lighting matrix on the circuit board corresponds
to the valve location.
5.4.1 Feed or Waste Valve Rebuilding
The two feed valves and two waste valves are located on the unied
valve block. This valve block does not require removal to rebuild a
feed or waste valve.
1Set the ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the side and back panels.
3Remove the retaining cap from the appropriate valve with a
slotted-head screwdriver.
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4Lift off the solenoid coil.
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Elite Service Manual
5.4.2 Feed or Waste Valve Reassembly
To reassemble the feed or waste valves, follow the feed or waste valve
5.4.3 Solenoid Valve Coil Replacement
If a solenoid valve coil does not operate, its corresponding green light
5Loosen and remove the solenoid base with a one-inch deep
well socket.
6Install the rebuild kit, which contains all parts of the sole noid
assembly except the solenoid coil.
rebuilding procedure in reverse order, and test for leaks.
on the circuit board does not illuminate.
1Set the ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the side and back panels.
3Remove the retaining cap with a slotted-head screwdriver.
4Disconnect the solenoid leads, and lift off the solenoid coil.
5Replace with the new coil.
6Reinstall the retaining cap back on top of the coil, and reconnect
the solenoid leads.
7Reconnect the back and side panels.
5-5
AirSep® Corporation
5.5 Sieve Bed Replacement
WARNING
Do not rell the snap-ring-style sieve beds. Special
tooling is required to remove and re-install the springloaded top cap and snap-ring.
CAUTION
Do not expose molecular sieve (contents of bed) to air
for an extended period of time. Pro longed exposure
of molecular sieve to the moisture in room air results
in contamination and permanent damage to the sieve
material. Keep all openings to the sieve beds sealed.
NOTE
NewLife
®
Elite Service Manual
If replacement is necessary, you must replace both sieve
beds at the same time.
5.5.1 Sieve Bed Removal
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2Remove the side and back panels.
3 Cut the tie-wraps at the brass “T” tting, and discon nect the
green 1/4-inch product tubes.
4Cut the tie-wraps at the top of the sieve beds, and disconnect
the green 1/4-inch equalization tubes.
5 Remove the 9/16-inch compression tting on the bottom of
each sieve bed.
6Cut the tie-wraps, and remove the sieve beds. Proper removal
of the sieve beds includes the product tubes.
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7Plug the opening on the top and bottom of the sieve beds.
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NewLife
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Elite Service Manual
5.5.2 Sieve Bed Installation
To install the sieve beds, follow the sieve bed removal procedure in
To check for leaks, take the following steps:
reverse order. It is very important to tighten all tubes to elimi nate leaks.
However, do not over tighten.
1Plug in the unit.
2Set the unit’s ON/OFF switch to ON for three minutes with
the owmeter closed to pressurize the system.
3Set the unit’s ON/OFF switch to OFF, and unplug the power
cord.
4Apply soapy water around the sieve bed tube connections,
and check for leaks.
NOTE
Leaks can be so small in air loss that
oxygen concentration is not affected
immedi ately. The sieve material can
become contaminated gradually.
Careful leak testing is important.
5.6 Cabinet Fan Replacement
The cabinet fan for the NewLife is located in the back of the unit. Refer to
the troubleshooting chart in Section 6.0 of this manual for instances where
replacement of the fan may be required.
To replace the cabinet fan in the NewLife unit, take the following steps:
1Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the side and back panels.
3Remove the two screws that hold the fan to the superstructure, and
remove the fan.
5-7
4Disconnect the fan leads.
5 Position the new cabinet fan so that the air ow arrow points toward
the compressor and the electrical connections are in the bottom right
corner.
AirSep® Corporation
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NewLife
Elite Service Manual
6Connect the fan leads, and install the cabinet fan screws.
7Reconnect the back and side panels.
5.7 Circuit Board Replacement
The solid-state printed circuit board controls the sequential timing operation of
the ve solenoid valves and the alarm system functions. The ve-green-light
matrix corresponds to the valve conguration of the NewLife unit. Two green
lights should always illuminate and rotate (cycle) during normal operation.
A green light that fails to illuminate indicates a disconnected or faulty solenoid
coil or an electrical malfunction in that valve circuit. The two red lights indicate
high and low pressure.
Consult the troubleshooting chart in Section 6.0 to determine when to replace
the printed circuit board.
CAUTION
The Printed Circuit Boards (PCBs) contain components
that are sensitive to electrostatic discharge (ESD) and
can damage the board if not handled properly. As when
handling any ESD-sensitive PCB, observe standard
ESD safety procedures. These procedures include the
following:
Handle the PCB by the edges only.
Work on a grounded ESD mat.
Wear a grounded wrist strap.
Store PCBs only in anti-static bags.
5.7.1 Circuit Board Removal
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
AirSep® Corporation
2Remove the side and back panels.
3Disconnect the main power 10-pin connector from the circuit
board.
5-8
NewLife
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Elite Service Manual
NOTE
If a pressure transducer circuit board,
cut tie-wrap at circuit board and
disconnect green 1/4-inch tube. Plug/
cap open end of tube until new circuit
board is replaced.
4Push in on the locking tab to the alarm 6-pin connector to
disconnect it.
5With a slotted screwdriver, push in on the board support tabs,
while you lift each corner of the circuit board.
6Remove the circuit board.
NOTE
Handle the new circuit board only
by the edges to prevent electro static
damage to the unit.
5.7.2 Circuit Board Installation
NOTE
If a pressure transducer circuit board,
rst reinstall 1/4-inch green tube with
new tie-wrap.
1Push the circuit board on to the support tabs.
2Firmly plug in the 6-pin connector to the circuit board so that
the connector’s locking tab locks against the circuit board.
3Plug in the 10-pin connector.
5-9
4Reconnect the back and side panels.
AirSep® Corporation
®
NewLife
Elite Service Manual
5.8 Product Regulator Check and Setting
The product regulator enables you to set the maximum ow of oxygen output
by the NewLife unit. To check for proper adjustment of the product regulator,
take the following steps:
1Set the ON/OFF switch to the ON position.
2Allow the unit to run for three minutes.
3 Turn the owmeter adjustment knob counterclockwise until it stops
(wide open).
4 The owmeter ball centers itself on the 5.5 lpm line. If not, the product
regulator needs to be reset.
5.8.1 Setting Product Regulator for Normal Operation
Use the following procedure to reset the product regulator:
1 Disconnect the humidier bottle, if used, and the tubing from
the oxygen outlet.
2Plug in the unit.
3Set the unit’s ON/OFF switch to the ON position, and allow
the unit to run at least three minutes to build up pressure.
4Remove the right side panel.
5 Turn the owmeter adjustment knob counterclockwise un til
it stops (wide open).
6Pull outward on the regulator knob to unlock it.
7 Turn the regulator knob or set screws until the owmeter ball
centers on the 5.5 lpm line (clockwise to increase).
8Push in the regulator knob to lock it.
9Reconnect the side panel.
5.8.2 Product Regulator Lockout
AirSep® Corporation
Take the following steps to limit the maximum flow of oxygen
concentrator:
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NewLife
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Elite Service Manual
NOTE
It may be desirable to provide one addi tional
liter of ow if you use the lockout feature.
1Plug in the unit.
2Set the unit’s ON/OFF switch to the ON position, and allow
the unit to run at least three minutes to build up pressure.
3 If used, connect the humidier bottle, oxygen tubing, and
cannula to the oxygen outlet.
4Remove the right side panel.
5 Turn the owmeter adjustment knob counterclockwise un til
it stops (wide open).
6Pull outward on the regulator knob to unlock it.
NOTE
When this lockout feature is no longer
required, follow the normal regulator
setting proce dure, as described in
Section 5.8.1.
7Turn the regulator knob counterclockwise to decrease the
setting until the flowmeter registers the maximum flow
desired.
8Push in the regulator knob to lock the setting.
9Reconnect the side panel.
5.8.3 Back Pressure Correction at 5 LPM
In some cases, additional lengths of oxygen tubing with a humidi er
bottle can increase back pressure and limit oxygen ow below 5 lpm.
5-11
To achieve 5 lpm, use the following procedure:
1Plug in the unit.
AirSep® Corporation
®
NewLife
Elite Service Manual
2Set the ON/OFF switch to the ON position, and allow the unit
to run at least three minutes to build up pressure.
3 Connect the humidier bottle, oxygen tubing, and cannula to
the oxygen outlet.
4Remove the right side panel.
5 Turn the owmeter adjustment knob counterclockwise un til
it stops (wide open).
6Pull outward on the regulator knob to unlock it.
7 Turn the regulator knob clockwise until the owmeter ball
centers on the 5.5 lpm line.
8Push in the regulator knob to lock the setting.
9 Turn the owmeter adjustment knob clockwise until the
owmeter indicates 5 lpm.
10 Reconnect the side panel.
NOTE
When this back pressure correction at
5 lpm is no longer required, fol low the
normal regulator setting procedure as
described in Section 5.8.1.
5.8.4 Product Regulator Cleaning or Rebuilding
Clean or rebuild the product regulator if the owmeter ball uc tuates
more than 1/4 of a liter or if the regulator cannot be adjusted for lockout.
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2Remove the right side panel.
AirSep® Corporation
3Use large pliers to unscrew the bonnet of the product regulator,
which contains a large spring.
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NOTE
Adjust the product regulator fully
counterclockwise to unload the spring.
This makes disassembly and reassembly
easier.
4Remove the diaphragm. (Clean or replace it.)
5Use a Phillips-head screwdriver to unscrew the diaphragm
stem guide located in the center of the regulator body to gain
access to the seat.
6Remove the seat. Be careful not to lose the spring located
behind the seat.
7Clean or replace the seat.
8With the spring behind the seat, screw the diaphragm stem
guide back into the body of the regulator. (Do not over
tighten.)
9Install a clean or replacement diaphragm.
10Put the large spring and slip ring into the bonnet, and screw
the bonnet onto the regulator body.
11Reset the product regulator as described in Section 5.8.1.
5.9 High or Low Pressure Switch Replacement
(In Equipped Units)
The high pressure switch is located closer than the low pressure switch to the
pressure test port. Remove it rst to gain access to the low pressure switch.
1Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
5-13
2Remove the right side panel.
3Disconnect the leads to the pressure switch.
4Unscrew the pressure switch from the pressure test block.
AirSep® Corporation
5Install the new pressure switch, connect the leads, and leak test.
6Reconnect the side panel.
5.10 Circuit Breaker Replacement
5.10.1 Circuit Breaker Removal
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2Remove the left side panel.
3Disconnect the circuit breaker leads.
4Unscrew the circuit breaker while you apply pressure to the
circuit breaker retaining ring.
NewLife
®
Elite Service Manual
5.10.2 Circuit Breaker Installation
Follow the removal procedure for the circuit breaker in reverse order
to install the new circuit breaker.
5.11 ON/OFF Power Switch Replacement
5.11.1 ON/OFF Power Switch Removal
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2Remove both side panels, the lower front panel, and the back
cover.
3Unscrew the four Phillips-head screws that hold the control
panel to the superstructure.
4Cut off the two white tie-wraps from the terminal strip leads.
AirSep® Corporation
5Disconnect the ON/OFF switch leads from the back of the
switch.
6Push on the back of the power switch, while holding in its
retaining tabs, and remove the switch through the front panel.
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NewLife
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Elite Service Manual
5.11.2 ON/OFF Power Switch Installation
Follow the removal procedure for the ON/OFF power switch in reverse
order to install a new power switch. Make sure to reinstall the switch
properly by having the “O” on the switch located on the bottom when
nished.
5.12 Buzzer Replacement
1Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the left side panel.
3Unscrew the two Phillips-head screws that hold the buzzer to the
superstructure, and solder to disconnect the buzzer leads.
4Solder the leads to the new buzzer, and screw the buzzer to the
superstructure.
5Reconnect the side panel.
5.13 Hour Meter Replacement
1Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the left side panel.
3Disconnect the hour meter leads.
4Push hour meter mounting tabs to remove the hour meter through the
control panel.
5Install the new hour meter into the control panel, making sure that the
“hourglass” icon displays on the bottom.
6Reconnect the hour meter leads.
7Reconnect the side panel.
5-15
8Plug unit in and set the unit’s ON/OFF switch to ON. Hourglass icon
should ash showing it is functioning correctly.
AirSep® Corporation
5.14 Flowmeter Replacement
5.14.1 Flowmeter Removal
1Set the unit’s ON/OFF switch to the OFF position, and unplug
the power cord.
2Remove the left side panel.
3Cut the tie-wraps, and remove the 3/8-inch green oxygen
tubing from the owmeter ttings.
4 Unscrew the owmeter nuts with a wrench.
5 Remove the owmeter through the control panel.
5.14.2 Flowmeter Installation
To install a new owmeter, follow the owmeter removal proce dure
in reverse order. Then perform a leak test on the connections.
NewLife
®
Elite Service Manual
5.15 Power Cord Replacement
1Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the side and back panels.
3Open the plastic twist clamps.
4Cut the tie-wraps (located near the power cord push-on connectors).
5Disconnect the white and black power cord leads.
6Lay the unit face down, and unscrew the two Phillips-head screws that
secure the power cord receptacle to the base of the unit.
7Use a slotted-head screwdriver to break the receptacle seal.
8Pull the receptacle forward until the back of the strain relief is visible.
9Press both ends of the strain relief together with needle-nose pliers to
remove and save it for reuse.
AirSep® Corporation
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10Pull the power cord through the opening on the power cord receptacle.
11Using same distance located on old power cord, slide the strain relief
12Insert the new power cord through the opening on the receptacle by
13Position the strain relief upward, and push it into the rear of the power
14Reconnect the power cord leads, close the plastic twist clamps, and
15Reconnect the power cord receptacle to the base of the unit with the
16Reconnect the side and back panels.
onto the new power cord with the lip of the strain relief facing the ends
of the power cord leads.
squeezing the strain relief together with pliers.
cord opening on the receptacle.
reattach the tie-wraps.
two Phillips-head screws.
5-17
AirSep® Corporation
6.0 Troubleshooting
6.1 Operating Pressure Test
Testing the operating pressure is a useful diagnostic tool when a concentrator
has low oxygen concentration and requires servicing. Units functioning
normally do not require operating tests.
Use the following procedure to test the operating pressure of the unit.
1Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
2Remove the right side panel.
3Connect the pressure test gauge to appropriate test port location. (Some
models may require an additional test adapter (KI257-1) which allows
connecting directly to the 1/4-inch black pressure tubing from the valve
block.)
NewLife
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Elite Service Manual
4Plug in the power cord, and set the unit’s ON/OFF power switch to
the ON position. Set the owmeter to 5 lpm, and allow the unit to run
at least ve minutes.
5Observe the maximum and minimum readings on the pressure test gauge.
The maximum reading should not exceed 32 psig (220.6 kPa). The
minimum reading should not be less than 10 psig (69 kPa).
NOTE
When you turn the unit on, the system pressure
always registers higher than normal for the rst
few minutes of operation. Make sure the unit is
not in economy mode of operation if equipped.
6.1.1 High Operating Pressure
Higher than normal operating pressure may indicate any of the
following:
AirSep® Corporation
A restrictive blowdown mufer, which does not allow the
waste (purge) gas to exit the system freely.
Operate the unit with the blowdown mufer disconnected to
see if the operating pressure returns to normal.
6-1
NewLife
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Elite Service Manual
6.1.2 Low Operating Pressure
Lower than normal operating pressure may indicate any of the
An improperly operating circuit board or solenoid valve.
Conrm that the circuit board and solenoid valves function
properly.
Contaminated sieve beds.
Change the sieve beds.
following:
A restriction in the suction resonator or optional air intake
lter, which limits the amount of room air available to the
compressor.
Disconnect the braided suction tube at the compressor, and
allow the unit to operate without the suction resonator to see if
normal operating pressure returns.
An improperly operating circuit board or solenoid valve.
Conrm that the circuit board and solenoid valves function
properly.
A leak in the unit, which allows system pressure to escape.
Leak test the unit.
A compressor with reduced output.
Ensure that the oxygen concentration level at the desired
liter ow is within AirSep’s specications. If it is below
specications, replace or repair the compressor.
An obstructed or vertically positioned (ECOnomy mode)
EcoCheck valve.
For the EcoCheck valve (available only as an option for units
equipped with an oxygen monitor): conrm that the EcoCheck
valve is not obstructed or in the ECOnomy mode.
6-2
6.2 General Troubleshooting
Before reviewing the troubleshooting chart, the following steps may be useful
to isolate any malfunctions:
1Turn the concentrator on. If unit does not turn on, refer to
troubleshooting chart.
AirSep® Corporation
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NewLife
Elite Service Manual
2 Make sure all lters are clean.
3 Turn owmeter completely open, up to the highest setting.
The ball should rest at 5.5 lpm. If setting is not 5.5 lpm, adjust
regulator so that the ball is set at 5.5 lpm with the owmeter
completely open.
4Make sure the unit is cycling properly by following the green
valve lights on the circuit board. The lights should follow
the label below the circuit board and two lights should be
activated at all times. If the unit is not cycling properly, refer
to troubleshooting chart.
5 If concentrator is not meeting specications, make sure that
the unit is leak free by testing all tubing connections and
ttings with leak testing solution. Protect circuit board from
solution and start leak test at the heat exchanger, following
air ow of unit to oxygen outlet. Repair all leaks by tightening
connections and ttings.
6Set the concentrator at 5 lpm and connect pressure test gauge
to unit. Determine pressure parameters by observing high
and low pressure points on the gauge. If pressures are high
or low, refer to Section 6.1.
7Review troubleshooting chart to isolate and repair any other
malfunctions.
AirSep® Corporation
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6.3 Troubleshooting Chart
ProblemProbable CauseSolution
Compressor does not run.
Constant audio alarm with
ON/OFF power switch in ON
position.
No power to unit.
Unit circuit breaker tripped or
faulty.
Faulty electrical connections.
Defective circuit board.
Check wall outlet for power.
Reset or replace circuit breaker.
Check electrical connections.
Check circuit board for two-light
rotation/replace circuit board.
Compressor runs with
intermittent alarm. Oxygen
concentration at 5 LPM is within
specications.
Compressor shuts down
intermittently.
Compressor does not start.
ON/OFF power switch in ON
position, intermittent alarm, and
cabinet fan turns.
Defective ON/OFF power switch.
Defective high or low pressure
switch.
Restricted air ow through unit.
Unit overheating due to improper
location.
Defective cabinet fan.
Defective high temperature
switch.
Extreme cold start.
Compressor thermally cut off due
to excessive heat. NOTE: It will
not restart unit until it cools down.
Replace ON/OFF power switch.
Replace and retest pressure
switch.
Clean inlet lter, or remove
obstruction.
Locate unit away from heating
source, providing adequate
ventilation on all sides.
Replace cabinet fan.
Replace high temperature switch.
Allow unit to reach room
temperature.
Blocked air intake or defective
cabinet fan/clear obstruction, or
replace cabinet fan.
6-4
Defective capacitor.
Defective circuit board.
Faulty electrical connection for
compressor.
Defective high temperature
switch.
Replace capacitor.
Check circuit board for two-light
rotation/replace circuit board.
Check electrical connections for
compressor.
Replace high temperature switch.
AirSep® Corporation
ProblemProbable CauseSolution
Compressor runs with intermittent low pressure alarm and low
oxygen concentration.
Leak.
Defective circuit board.
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NewLife
Elite Service Manual
Leak test and repair leak.
Check circuit board for two-light
rotation/replace circuit board.
Compressor runs with intermittent high pressure alarm and low
oxygen concentration.
Compressor relief valve releases
(popping sound).
Constant alarm with ON/OFF
switch in ON position. Circuit
breaker repeatedly trips.
Defective sieve beds.
Faulty solenoid valve.
Restriction in exhaust mufer.
Defective circuit board.
Defective solenoid valve.
Contaminated sieve beds.
Defective relief valve.
Faulty electrical connection at
waste valve.
Defective circuit breaker.
Defective capacitor.
Defective compressor.
Replace sieve beds.
Repair or replace solenoid valve.
Replace or clean mufer.
Check circuit board for two-light
rotation/replace circuit board.
Repair or replace solenoid valve.
Replace sieve beds.
Replace relief valve.
Repair electrical connection.
Replace circuit breaker.
Replace capacitor.
Replace compressor.
Alarm does not sound.
AirSep® Corporation
Defective circuit board.
Faulty electrical connection.
Dead battery.
Incorrectly installed battery.
Faulty electrical connection.
Defective ON/OFF switch.
Defective buzzer.
Defective pressure switch.
Check circuit board for two-light
rotation/replace circuit board.
Repair electrical connection.
Replace battery.
Reinstall battery with correct
polarity.
Repair electrical connection.
Replace ON/OFF switch.
Replace buzzer.
Replace and test pressure switch.
6-5
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ProblemProbable CauseSolution
Flowmeter uctuates.
Improperly set or faulty product
regulator.
Check regulator setting/clean,
repair, or replace regulator.
Leak.
Worn compressor.
Defective circuit board.
Defective owmeter.
Defective solenoid valve.
Cabinet fan does not turn.Defective cabinet fan.
Defective electrical connections.
Limited or low ow.
Restriction in humidier or tubing.
Product regulator set too low.
Leak.
Weak compressor.
Defective solenoid valve.
Reduced air intake (suction).
Leak test and repair leak.
Replace compressor.
Check circuit board for two-light
rotation/replace circuit board.
Replace owmeter.
Repair or replace solenoid valve.
Replace cabinet fan.
Check electrical connections.
Replace humidier or tubing.
Adjust regulator setting.
Leak test and repair leak.
Check system pressure, and
rebuild or exchange compressor.
Repair or replace solenoid valve.
Check felt lter, suction resonator,
and suction tube for obstruction.
Low oxygen concentration.
Defective circuit board.
Restriction in mixing tank.
Occluded internal felt lter.
Leak.
Weak compressor.
Unit’s temperature is too high.
Defective circuit board.
Contaminated sieve beds.
Defective solenoid valve.
Restriction in exhaust mufer.
Restriction in suction resonator.
Restriction in EcoCheck valve.
Check circuit board for two-light
rotation/replace circuit board.
Replace tank.
Replace felt lter.
Leak test and repair leak.
Check system pressure, and
rebuild or replace compressor.
Blocked air intake or defective
cabinet fan.
Check circuit board for two-light
rotation/replace circuit board.
Replace sieve beds.
Repair or replace solenoid valve.
Replace or clean exhaust mufer.
Check suction resonator and
suction tube for obstruction and
remove.
Clean EcoCheck valve.
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®
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Elite Service Manual
6.4 Tool Kit and Pressure Test Gauge
The tools needed for you to properly service the NewLife unit are listed below:
Large pliers, wire cutters, needle-nose pliers, slotted-head screwdriver, Phillips-
head screwdriver, ratchet, 8-inch adjustable wrench, 1-inch deep well socket,
9/16-inch socket, 2-inch extension, 7/16-inch combination wrench, 9/16-inch
combination wrench, and 5/8-inch combination wrench.
In addition, channel locks and a small slotted-head screwdriver may be recom-
mended for some service procedures.
A pressure test gauge to read operating system pressures on the NewLife unit