Invacare IRC5PO2 User manual

Service Manual
DEALER: Keep this manual. The procedures in this manual MUST be
performed by a qualified technician.
For more information regarding
Invacare products, parts, and services,
please visit www.invacare.com
Perfecto2™
Oxygen Concentrator
(HomeFill® Compatible)
Model IRC5PO2 (Sensored)
Model IRC5P (Non-Sensored)

Perfecto2
™2Part No 1148070
 WARNING
DO NOT OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND
UNDERSTANDING THIS MANUAL. IF YOU ARE UNABLE TO UNDERSTAND
THE WARNINGS, CAUTIONS, AND INSTRUCTIONS, CONTACT INVACARE
TECHNICAL SERVICES BEFORE ATTEMPTING TO USE THIS EQUIPMENT -
OTHERWISE SERIOUS INJURY OR PROPERTY DAMAGE MAY RESULT.
 WARNING
Invacare products are specifically designed and manufactured for use in conjunction
with Invacare accessories. Accessories designed by other manufacturers have not
been tested by Invacare and are not recommended for use with Invacare products.
PERFECTO2PARTS COMPATIBILITY
The Platinum concentrator and the Perfecto2concentrator share many similar
components. However, there are some components that are NOT cross compatible
and they are specific to each model.
Parts that can be used for Perfecto2repairs are listed in the Perfecto2parts catalog,
form number 93_038. Please reference this catalog before replacing any parts. Use
of incorrect parts could result in injury or property damage.

TABLE OF CONTENTS
Part No 1148070 3Perfecto2™
TABLE OF CONTENTS
SPECIAL NOTES ................................................................................ 6
FEATURES ........................................................................................ 7
TYPICAL PRODUCT PARAMETERS .................................................... 8
SECTION 1—IMPORTANT SAFEGUARDS .......................................... 10
Important Safeguards...............................................................................................................................10
Radio Frequency Interference ...............................................................................................................11
To Reduce The Risk Of Burns, Electrocution, Fire Or Injury To Persons.................................11
SECTION 2—INSTALLATION/SEQUENCE OF OPERATION .................. 12
Verification of Battery Free Power Loss Alarm ................................................................................12
Sequence of Operation ...........................................................................................................................12
SensO2Oxygen Sensor Technology - Ceramic Zirconia Sensor .................................................13
Technical Description .........................................................................................................................13
Operating Sequence ............................................................................................................................13
SECTION 3—PNEUMATIC DIAGRAM ............................................... 15
SECTION 4—TROUBLESHOOTING .................................................... 16
SECTION 5—CABINET .................................................................... 23
Removing Cabinet ....................................................................................................................................23
SECTION 6—PREVENTIVE MAINTENANCE ...................................... 24
Cleaning the Cabinet Filter ....................................................................................................................24
Replacing the Outlet HEPA Filter.........................................................................................................25
Check the Outlet HEPA Filter..........................................................................................................25
Replace the Outlet HEPA Filter .......................................................................................................25
Replacing the Compressor Inlet HEPA Filter ....................................................................................26
Replacing the Muffler Assembly ............................................................................................................26
Cleaning the Heat Exchanger.................................................................................................................29
SECTION 7—COMPRESSOR .............................................................. 31
Replacing Compressor Assembly .........................................................................................................31
Replacing Capacitor .................................................................................................................................33
Rebuilding the Thomas Model 2660 Compressor............................................................................34
Removing Compressor and Compressor Heads .........................................................................35
Rebuilding the Compressor...............................................................................................................38
SECTION 8—P.E. VALVE .................................................................. 42
Replacing P.E. Valve..................................................................................................................................42
SECTION 9—SIEVE BEDS ................................................................. 44
Replacing Sieve Beds................................................................................................................................44

TABLE OF CONTENTS
Perfecto2™4Part No 1148070
TABLE OF CONTENTS
SECTION 10—CHECK VALVES ......................................................... 46
Replacing Check Valves...........................................................................................................................46
SECTION 11—REGULATOR .............................................................. 48
Replacing Regulator..................................................................................................................................48
Adjusting Regulator..................................................................................................................................49
SECTION 12—HEAT EXCHANGER ASSEMBLY .................................. 51
Replacing Heat Exchanger Assembly ...................................................................................................51
SECTION 13—CONTROL PANEL ...................................................... 53
Removing Control Panel.........................................................................................................................53
SECTION 14—COOLING FAN ........................................................... 55
Replacing Cooling Fan .............................................................................................................................55
SECTION 15—P.C. BOARD .............................................................. 58
Replacing P.C. Board................................................................................................................................58
SECTION 16—TRANSFORMER ......................................................... 61
Replacing the Transformer.....................................................................................................................61
SECTION 17—ON/OFF SWITCH ......................................................... 62
Replacing On/Off Switch.........................................................................................................................62
SECTION 18—FLOWMETER .............................................................. 63
Replacing Flowmeter ...............................................................................................................................63
SECTION 19—HOUR METER ............................................................ 64
Replacing Hour Meter.............................................................................................................................64
SECTION 20— 4-WAY VALVE/MANIFOLD ASSEMBLY ........................ 65
Replacing 4-Way Valve and/or Manifold Assembly...........................................................................65
Replacing Pilot Valve Poppets and O-Rings........................................................................................68
SECTION 21—PURITY INDICATORS ................................................ 71
SensO2Alarm Indicators ........................................................................................................................71
Operation ..............................................................................................................................................71
Indicator Lights .....................................................................................................................................71
LX Models Indicator Light Explanation...........................................................................................71
SECTION 22—TIMING ..................................................................... 73
Autotuning.............................................................................................................................................73
Manual Tuning.......................................................................................................................................75

TABLE OF CONTENTS
Part No 1148070 5Perfecto2™
TABLE OF CONTENTS
SECTION 23—LEAK TEST ................................................................ 76
Leak Test ....................................................................................................................................................76
4 Way Valve Function Test....................................................................................................................78
SECTION 24— ALARM TEST ............................................................ 80
Alarm and Sensor Tests..........................................................................................................................80
Power Loss Alarm ...............................................................................................................................80
Low Pressure Test...............................................................................................................................80
Time-Out Test......................................................................................................................................81
High Pressure Test ..............................................................................................................................81
Oxygen Sensor .....................................................................................................................................82
P.E. Valve Coil Test .............................................................................................................................84
SECTION 25— SIEVE BED PRESSURE CHECK ..................................... 86
Checking Sieve Bed Pressure.................................................................................................................86
Disassembly...........................................................................................................................................86
Pressure Testing...................................................................................................................................86
LIMITED WARRANTY ..................................................................... 88

SPECIAL NOTES
Perfecto2™6Part No 1148070
SPECIAL NOTES
Signalwordsareusedinthismanualandapplytohazardsorunsafepracticeswhich
couldresultinpersonalinjuryorpropertydamage.Refertothetablebelowfor
definitionsofthesignalwords.
NOTICE
THEINFORMATIONCONTAINEDINTHISDOCUMENTISSUBJECTTOCHANGE
WITHOUTNOTICE.
 DANGER
DONOTSMOKEwhileusingthisdevice.Keepallmatches,litcigarettes,candles,or
othersourcesofignitionoutoftheroominwhichthisproductislocatedandaway
fromwhereoxygenisbeingdelivered.
NOSMOKINGsignsshouldbeprominentlydisplayed.Textilesandothermaterials
thatnormallywouldnotburnareeasilyignitedandburnwithgreatintensityin
oxygenenrichedair.Failuretoobservethiswarningcanresultinseverefire,property
damageandcausephysicalinjuryordeath.
SIGNAL WORD MEANING
DANGER Danger indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING Warning indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
CAUTION
Caution indicates a potentially hazardous situation which, if
not avoided, may result in property damage or minor injury
or both.

FEATURES
Part No 1148070 7Perfecto2™
FEATURES
FRONT VIEW
Power Cord
Outlet Fitting*
Oxygen Outlet
Flowmeter
Oxygen Purity Indicator
Lights / Fault and Power
Indicator Lights
(SensO2 Model Only)
Power Switch
Circuit Breaker
Hour
Meter
ACCESSORIES(NOTSHOWN):
PreciseRX™PediatricHumidifier/FlowmeterAccessory‐IRCPF16
HomeFillhomeoxygencompressor‐IOH200
*NOTE:Thisoutletfittingistobeusedonly
forfillingoxygencylinderswiththeHomeFill
homeoxygencompressor.Theoutletfitting
doesnotaffectconcentratorperformance.
RefertotheHomeFillownerʹsmanual,part
number1100873,forconnectionand
operatinginstructions.Whennotinuse,the
plugprovidedwiththeconcentratorshouldbe
insertedintotheoutletfitting.Formore
informationabouttheHomeFill,contactyour
Invacaredealer.

TYPICAL PRODUCT PARAMETERS
Perfecto2
™8Part No 1148070
TYPICAL PRODUCT PARAMETERS
Electrical Requirements: 120 VAC ± 10% (132 VAC/108 VAC), 60 Hz
Rated Current Input: Perfecto25: 3 A
Sound Level: Perfecto25: 44 ± 2 dBA Average
Altitude: Perfecto25 - Up to 6,000 ft. (1828 meters) above sea level with-
out degradation of concentration levels. From 6,000 ft. (1828
meters) to 13,129 ft. (4000 meters) below 90% efficiency.
*Oxygen Output
Concentration Levels:
All IRC5PO2/IRC5P models 95.6% to 87% at 0.5 to 5 L/min
Maximum Outlet Pressure: Perfecto25: 5 psi ± 0.5 psi. (34.5 kPa ± 3.45 kPa.)
Flow Range: Perfecto25 - 0.5 to 5 L/min
For flowrates less than 1 L/min, we recommend the use of the
Invacare Pediatric Flowmeter IRCPF16 Accessory.
Low Flow Alarm: Perfecto25 - 0 L/min to 0.5 L/min
Rapid Audible Alarm Beeping (No Accessories Connected).
Average Power
Consumption:
Perfecto25: 280 W (Operating @ 3 L/min)
Pressure Relief Mechanism Operational at: 35 psi ± 3.5 psi (241 kPa ± 24.1 kPa)
Change in maximum recommended flow
when back pressure of 7kPa is applied:
0.7 L/min
Filters: Cabinet, Outlet HEPA and Compressor Inlet
Safety System: Current overload or line surge shutdown. High temperature
compressor shutdown. High Pressure Alarm w/compressor shut-
down. Low Pressure Alarm w/compressor shutdown. Battery
Free Power Loss Alarm. SensO2Oxygen System (SensO2Model)
Low Flow Alarm.
Width: 15 in. ± 3/8 in (38.1 cm ± 1 cm)
Height: 23 in. ± 3/8 in (58.4 cm ± 1 cm)
Depth: 12 in. ± 3/8 in (30.5 cm ± 1 cm)
Weight: Perfecto25: 43 lbs ± 2 lbs (19.5 kg ± 1 kg)
Shipping Weight: Perfecto25: 48 lbs ± 2 lbs (21.8 kg ± 1 kg)
Operating Ambient
Temperature:
50°F - 95°F (10°C - 35°C) at 20-60% relative humidity
Exhaust: Perfecto25: Less than Ambient
+ 35°F (+19°C).
Oxygen Output: Perfecto25: Less than Ambient + 6°F (+3°C)
Cabinet: Impact Resistant flame-retardant plastic cabinet that conforms to
UL 94-V0.
Regulatory Listing: Double Insulated Product ETL certified complying with UL 1097
ETL certified to CSA C22.2 No. 68.

TYPICAL PRODUCT PARAMETERS
Part No 1148070 9Perfecto2
™
*NOTE:Statedconcentrationlevelsachievedafterinitialwarm‐upperiod(approximately30
minutes).
IRC5PO2 INDICATORS
IRC5P INDICATORS
Electrical: No extension cords.
Placement: No closer than three inches from any wall, furniture, draperies,
or similar surfaces.
Tubing: 7 ft cannula with a maximum 50 ft of Crush-Proof Tubing (DO
NOT pinch).
Relative Humidity: 20 to 60%
Time of Operation: Up to 24 hours per day.
Recommended Storage and Shipping Temper-
ature:
-20°F to 150°F (-29°C to 65°C), at 15-95% relative humidity.
LABEL
SYMBOL
O2PURITY INDICATOR LIGHTS
(LED)
SYSTEM OKAY
O2over 85% (± 2%)
GREEN Indicator Light
O2Between 73% (± 3%)
to 85% (±2%)
YELLOW Indicator light
A. YELLOW Solid
B. YELLOW Flashing Sensor
Failure
Call a qualified technician.
SYSTEM FAILURE
O2Below 73% (±3%)
RED Indicator Light
Continuous Audible Alarm
Sieve-GARD Compressor Shut-
down.
LABEL
SYMBOL
STATUS INDICATOR LIGHTS
(LED)
SYSTEM OKAY GREEN Indicator Light
SYSTEM FAILURE RED Indicator light
Continuous Audible Alarm
Sieve-GARD™Compressor
Shutdown
Call a qualified technician
O
2
I/O

SECTION 1—IMPORTANT SAFEGUARDS
Perfecto2™10 Part No 1148070
SECTION 1—IMPORTANT
SAFEGUARDS
Important Safeguards
Inordertoensurethesafeinstallation,assemblyandoperationofthePerfecto2
concentratortheseinstructionsMUSTbefollowed.
CAUTION
“Caution:Federallawrestrictsthisdevicetosaleorrentalbyoronorderofaphysician,
oranyotherpractitionerlicensedbythelawoftheStateinwhichhe/shepracticestouse
orordertheuseofthisdevice.”
 DANGER
Theuseofoxygentherapyrequiresthatspecialcarebetakentoreducetheriskoffire.
Anymaterialsthatwillburninair,andsomethatwillnot,areeasilyignitedandburn
rapidlyinhighconcentrationsofoxygen.Forsafetyconcerns,itisnecessarythatall
sourcesofignitionbekeptawayfromtheproductandoutoftheroominwhichitis
beingused.NOSMOKINGsignsshouldbeprominentlydisplayed.
Aspontaneousandviolentignitionmayoccurifoil,greaseorgreasysubstancescomein
contactwithoxygenunderpressure.ThesesubstancesMUSTbekeptawayfromthe
oxygenconcentrator,tubingandconnections,andallotheroxygenequipment.DONOT
useanylubricantsunlessrecommendedbyInvacare.
Foroptimumperformance,Invacarerecommendsthateachconcentratorbeonand
runningforaminimumof30minutesatatime.Shorterperiodsofoperationmayreduce
maximumproductlife.
Iftheconcentratorhasadamagedcordorplug,ifitisnotworkingproperly,ifithasbeen
droppedordamaged,ordroppedintowater,callqualifiedtechnicianforexamination
andrepair.
Keeptheoxygentubing,cord,andunitawayfromheatedorhotsurfaces,includingspace
heaters,blankets,stovesandsimilarelectricalappliances.
DONOTmoveorrelocateconcentratorbypullingonthecord.
NEVERdroporinsertanyobjectintoanyopening.
NEVERblocktheairopeningsoftheproductorplaceitonasoftsurface,suchasabed
orcouch,wheretheairopeningmaybeblocked.Keeptheopeningsfreefromlint,hair
andthelike.Fillhumidifierwithwatertothelevelshownbythemanufacturer.DONOT
overfill.
Keepunitatleastthreeinchesawayfromwalls,draperies,furniture,andthelike.
InvacarerecommendsthatCrush‐Proofoxygentubingbeusedwiththisproductandnot
exceed50ft.(15.2m)inlength.

SECTION 1—IMPORTANT SAFEGUARDS
Part No 1148070 11 Perfecto2™
Radio Frequency Interference
MostelectronicequipmentisinfluencedbyRadioFrequencyInterference(RFI).Caution
shouldbeexercisedwithregardtotheuseofportablecommunicationsequipmentinthe
areaaroundsuchequipment.
To Reduce The Risk Of Burns, Electrocution, Fire Or Injury
To Persons.
DONOTcomeincontactwiththeconcentratorwhilewet.
DONOTplaceorstoreproductwhereitcandropintowaterorotherliquid.
DONOTreachforproductthathasfallenintowater.UnplugIMMEDIATELY.
AproductshouldNEVERbeleftunattendedwhenpluggedin.
Usethisproductforonlyintendeduseasdescribedinthismanual.
DONOTconnecttheconcentratorinparallelorserieswithotheroxygenconcentratorsor
oxygentherapydevices.
Useofsomeadministrationaccessoriesorcertainhumidifiersnotspecifiedforusewith
oxygenconcentratormayimpairtheperformance.
Thisequipmentistobeusedasanoxygensupplementandisnotconsideredlife
supportingorlifesustaining.
Avoidcreationofanysparknearmedicaloxygenequipment.Thisincludessparksfrom
staticelectricitycreatedbyanytypeoffriction.

SECTION 2—INSTALLATION/SEQUENCE OF OPERATION
Perfecto2™12 Part No 1148070
SECTION 2—INSTALLATION/
SEQUENCE OF OPERATION
Verification of Battery Free Power Loss Alarm
CheckthePerfecto2concentratorforproperoperatingconditions.
1. Iftheunithasbeeninbelow‐freezingtemperatures,allowittowarmuptoroom
temperaturebeforeoperating.
2. Theconcentratormayneedtobeturnedonforfourtofivesecondstochargethe
BatteryFreePowerLossAlarm.Connectpowercordtooutletandturnthe
concentratoron.Turnflowcontrolknobcounterclockwiseandflowwillbegin
IMMEDIATELY.SetflowratetofiveL/min.Lettheunitrunfor30minutes,thenturn
unitoff.
3. UnplugthepowercordandpressOn/Off()switchtotheOn()position.An
intermittentaudiblealarmwillsound.ThisconfirmsproperoperationoftheBattery
FreePowerLossAlarm.TurnOn/OffswitchOff().
4. Connectpowercordtooutletandturnonconcentrator.Unitwillbeeponstart‐up.
5. Checktheoxygenconcentrationperspecificationsafter30‐40minutesrunningtime.
Sequence of Operation
TurningOn()thepowerswitchapplies120VACtothecompressormotor,hourmeter,
transformer,coolingfanandtheprintedcircuit(P.C.)board.
Roomairentersthecompressorviathecabinetfilterandthecompressorinletfilter.The
airiscompressedbythewobblepistonsinthecompressortoapressureof21p.s.i.(144.79
kPa).
Asincreasedpressurecreatesincreasedtemperature,aheatexchangerisusedtolower
thetemperaturebeforetheairentersthe4‐wayvalve.Itisthenchanneledtoasievebed
containingtheadsorptionmaterial.Restrictiondownstreamofthesievebedcauses
pressuretobuildupinsidethesievebedwhichisnecessaryfortheadsorptionprocess.A
smallamountofrelativelypureoxygenentersthetopofthesecondbedthrougha
restrictiveleakinthepressureequalization(P.E.)valvewiththebalanceenteringa
storagetank.Thenitrogenremovedisexhaustedbackfromthebedthroughthe4‐way
valveintoroomair.Amufflerislocatedattheexhaustendofthevalvetomufflethe
soundoftheexhaustasitexitstheconcentrator.
Theoxygennotbeingusedtoexhaustischanneledintothestoragetank.Thepressurized
oxygenisregulateddowntofivep.s.i.(34.4kPa),entersanaccurateflow‐measuring
device,flowsthroughOutletHEPAfilterandcheckvalve,thenouttothepatient.
I/O
I/
/O
I/

SECTION 2—INSTALLATION/SEQUENCE OF OPERATION
Part No 1148070 13 Perfecto2™
Theelectricalactivationofthe4‐wayValveisaccomplishedevery8to15secondsbythe
pressuresensorandP.C .Boardelectronicswhenthepressurereachesasetpointof21
p.s.i.(144.79kPa)outputflows4L/minandaboveor16p.s.i.(110.32kPa)outputflows3
L/minandbelow.Thetimebetweencyclesisdependentonaltitude,flowrateand
internalenvironmentalfactors.
AP.E. valveopensjustpriortotheshiftofthe4‐wayvalve.Thisallowshighly
concentratedoxygentoenterthejustexhaustedbedfromthetop.Thisadditional
pressureallowsthebedtostartitscycleatahigherpressure.TheP. E . valvewillclosejust
aftertheshiftofthe4‐wayvalve.
Ifmainpowerislost,theBatteryFreePowerLossAlarmwillsoundashortʺBEEPʺ,with
alongpauseafter.Allunitsareequippedwithadiagnosticalarmsystemthatsignalsif
thepneumaticpressureorelectricalsystemsmalfunction.Thetroubleshootingguidein
thismanualexplainsthealarmsystemsignalsandreasons,indetail.Referto
Troubleshootingonpage 16.
SensO2Oxygen Sensor Technology - Ceramic Zirconia
Sensor
Technical Description
Theoxygenbeingproducedbytheconcentratorflowsoutoftheproducttankandinto
theflowmeter.Asmallflowofoxygenproducedbytheunitissentthroughaprecision
orificetotheoxygensensormountedontheprintedcircuitboard.
Astheoxygenentersthesensor,itpassesthroughascreenandcontactsthesensingdisk.
Electriccurrentflowingthroughametalfilmresistorheatsthediskinexcessof300°C.
Oxygenmoleculescontacttheelectrodeofthediskandpick‐upextraelectronstobecome
oxygenions.Theseoxygenionsareattractedtotheelectrodeonthebottomofthezirconia
sensingdisk.Becauseofthecrystalstructureofthezirconia,onlyoxygenionscanpass
through.Whentheoxygenionsreachthebottomelectrode,theextraelectronsare
releasedfromtheoxygenionsandoxygenmoleculesreturntotheair.Thenumberof
electronsisdirectlyrelatedtotheoxygenconcentration.TheelectronstraveltotheP.C.
boardwheretheyarecountedandtheoxygenconcentrationreadingiscalculated.
AmicroprocessorontheP.C.boardcontainssoftwarethatinterpretsthesignalbeing
receivedfromthesensor.Itcomparesthesignaltoclinicallyacceptablelimits.Signals
outsideoftheclinicallyacceptablelimitsgenerateresponsesintheformoflights,audible
indicators,and/orsystemshut‐down.
Operating Sequence
Oncethepowerswitchhasbeenturnedon(),theSensO2circuitwillwaitfiveminutes
fortheconcentratortobeginproducingclinicallyacceptableoxygenandtheoxygen
sensortostabilize.TheGREENlightwillilluminate(indicatingnormalsystemoperation)
whiletheoxygensensoriswarmingup.
I/

SECTION 2—INSTALLATION/SEQUENCE OF OPERATION
Perfecto2™14 Part No 1148070
Afterfiveminutes,iftheoxygenpurityexceeds85%±2%,theGREENlightwillcontinue
toilluminate.
Iftheoxygenlevelisnotabove85%±2%afterthefirstfiveminutes,thesystemwill
continuetomonitortheO2andwaitforamaximumof30minutesfromstart‐uptoreach
85%±2%beforeactivatinganalarm.Environmentalfactorssuchaslowvoltage,high
altitude,orageofthemachinewillaffectthetimerequiredtoreach85%±2%.
Iftheoxygenlevelisnotabove85%±2%withinthefirst30minutes,theoxygen
concentrationalarmsequencewillactivateandtheunitwillshutdown.
Whenoxygenconcentrationisabove85%±2%,thesensormeasuresoxygenpurityevery
10minutes.Ifareadingfallsbelow85%±2%,aYELLOWlightwillilluminate.Ifthe
oxygenpurityfallsbelow73%±3%theREDlight/Alarm/Shut‐Downmodewillactivate.

SECTION 3—PNEUMATIC DIAGRAM
Part No 1148070 15 Perfecto2™
SECTION 3—PNEUMATIC
DIAGRAM
Perfecto2 Oxygen Concentrator
Flowmeter
Ouput
HEPA Filter
Output
Check
Valve
Patient
Output
Oxygen Sensor
(SensO2models Only)
Pressure Sensor
P.S.I. O2
P.C. Board
Pressure
Regulator
Product
Tank
Check
Valves
Air Inlet
Cabinet
Filter
Compressor
Inlet Filter
Sieve
Bed
Sieve
Bed
P.E. Valve
4-way
Valve
Compressor
Relief
Valve
Heat
Solenoid
Pilot
Exhaust
Muffler
LEGEND Pneumatic Connections Electrical Connections

SECTION 4—TROUBLESHOOTING
Perfecto2
™16 Part No 1148070
SECTION 4—TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE SOLUTION
Normal Operation:
Internal Status Indicators:
RED: Off
GREEN: Off
Unit plugged in, power switch
on. Single beep on start up.
No Problems. System Okay.
Power loss:
Internal Status Indicators:
RED: Off
GREEN: Off
Unit unplugged, power
switch on, alarm off.
No Problems. Battery Free Circuit drained. Plug in cord
and turn power switch ON ()to
recharge.
Power loss:
Internal Status Indicators:
RED: Off
GREEN: Off
Unit plugged in, power switch
, alarm off, battery Free
circuit drained.
No power at outlet. Check electrical outlet with a table lamp
or voltmeter set on 50-200 VAC scale. If
outlet isn't working, check protective
device in home's electrical panel or consult
an electrician. Also ensure that unit is
properly plugged in. DO NOT use
extension cords. Move to another outlet
or circuit.
Power cord:
a. Frayed.
b. Broken or damaged spade.
c. Spade connector from power
cord loose or disconnected
(inside back of unit).
a. Reattach cord.
b. Replace power cord connectors on
plug.
c. Reattach connector.
On/Off ()switch.
a. Disconnected wire.
b. Faulty switch.
Check all electrical connections to the
ON/OFF ()switch for any
disconnected wires.
If the concentrator does not come on at all
and wiring is intact, color code and
remove wires one at a time. Remove and
replace with new one. Transfer wires from
old switch to new switch one at a time to
the matching contact.
Circuit breaker tripped. Reset breaker.
NOTE: Breaker may trip to safeguard
concentrator during a power surge.
If breaker trips IMMEDIATELY, there is a
probable short in the unit. Check for
pinched or charred wires. If the breaker
does not trip, run unit for approximately
two hours. The circuit breaker should be
less than 10 ohms. If breaker trips again,
there is an internal problem. Contact
Invacare Technical Service.
I/
I/O
I/O

SECTION 4—TROUBLESHOOTING
Part No 1148070 17 Perfecto2
™
Power Loss:
(Continued)
Internal Status Indicators:
RED: Off
GREEN: Off
Unit plugged in, power
switch, alarm off. Battery
Free circuit drained
P.C. board.
a. P.C. board damaged.
b. Loose or damaged connector.
a. Replace P.C. Board. Refer to
Replacing P.C. Board on page 58.
b. Repair or replace connector.
Internal Power
Loss Senso2:
Internal Status Indicators:
RED: Off
GREEN: Off
Alarm may or may not be on.
Control Panel Indicators:
RED: Off
YELLOW: Off
GREEN: Off
Fan operates, Compressor
not operating.
Transformer assembly.
a. Faulty.
b. Connector loose or
disconnected.
c. Faulty wiring.
a. Replace. Refer to Replacing the
Transformer on page 61.
b. Reattach connector.
c. Replace transformer assembly. Refer
to Replacing the Transformer on
page 61.
P.C. board faulty. Replace P.C. board. Unit requires retiming
after P.C. board replacement. Refer to
Replacing P.C. Board on page 58.
High Pressure:
Internal Status Indicators:
RED: One Flash
GREEN: Two Flashes
Unit plugged in, power switch
on, continuous alarm.
Compressor shut down.
P.C. board:
a. Malfunction
b. Disconnected wire.
c. Shifting valve at pressures greater
than 25 p.s.i. for Perfecto2.
a. Set flow to max L/min. for
concentrator. Check voltage across
Pilot Valve 1 on 200 volt scale. If
meter reads 0 volts when unit is
turned on, replace P.C. board
b. Check spade connectors on pilot
valves 1 or 2 and connectors on P.C.
board.
c. Replace P.C. board. Unit requires
retiming after P.C. board
replacement. Refer to Replacing P.C.
Board on page 58.
4-way Valve:
a. Not shifting.
b. Bad coil.
c. Coil resistance.
a. Check voltage. If voltage rises to
approximately 24 volts D.C. when
unit shuts down, P.C. board is
functioning properly. Replace the
valve if shorted or open. Refer to
Replacing 4-Way Valve and/or
Manifold Assembly on page 65.
b. Replace 4-way valve. Refer to
Replacing 4-Way Valve and/or
Manifold Assembly on page 65.
c. Coil should read 175 ohm ± 20.
Compressor inlet filter dirty or
plugged.
Replace compressor inlet filter. Refer to
Replacing the Compressor Inlet HEPA
Filter on page 26.
SYMPTOM PROBABLE CAUSE SOLUTION

SECTION 4—TROUBLESHOOTING
Perfecto2
™18 Part No 1148070
LOW PRESSURE:
Internal Status Indicators:
RED: One Flash
GREEN: One Flash
Or
RED: One Flash
GREEN: Three Flashes
Control Panel Indicators:
RED: On
YELLOW: Off
GREEN: Off
Unit plugged in, power switch
on, continuous audible alarm.
Compressor shut down
(Failure to cycle due to low
pressure).
Compressor:
a. Leaks at fittings or tubing
b. Leaking or defective relief valve.
c. Insufficient voltage at outlet.
d. Worn cup seals or gaskets.
a. Replace or repair.
b. Repair leak or replace.
c. DO NOT use extension cords. Use
another outlet.
d. Rebuild top end of compressor. Refer
to Rebuilding the Thomas Model
2660 Compressor on page 34.
Heat exchanger:
a. Leak at tubing or body chamber.
b. Inspect tubing and heat
exchanger.
a. Replace or retighten.
b. Replace or retighten tubing. Replace
heat exchanger. Refer to Replacing
Heat Exchanger Assembly on
page 51.
Regulator cracked or leaking. Replace regulator. Refer to Replacing
Regulator on page 48.
P.E. valve leaking. Replace P.E. Valve. Check voltage at P.E.
valve connector on 24 volt D.C. scale. The
P.E. Valve activates or energizes
approximately one second prior to the
activation of the 4 way valve with
approximately 24 volts. If voltage is in
excess of 24 volts consistently, replace the
P.C. board. Refer to Replacing P.C. Board
on page 58. If the P.C. board voltage acts
normally, replace the P.E. valve. Refer to
Replacing P.E. Valve on page 42.
NOTE:Checkforleaksstartingat
thecompressoroutputthroughall
thepneumaticconnections.Major
leakswillcausesystempressuresto
remainbelowadequateshift
(exhaust)pressuresandwillcause
compressorshutdown.
Defective Parts:
Internal Status Indicators:
RED: One Flash GREEN: Five
Flashes
Or
RED: Two Flashes
GREEN: Three Flashes
Control Panel Indicators:
RED: On
YELLOW: Off
GREEN: Off
Unit plugged in, power switch
on, continuous audible alarm.
Compressor shut down.
Defective main valve coil. a. Replace main valve.
b. Replace main valve coil.
Connector loose. Reattach connector.
Defective P.E. valve coil. (Resistance
80 ohm’s ± 10.)
Replace P.E. coil if shorted or open on
resistance check. Refer to Replacing P.E.
Valve on page 42.
Defective P.E. valve. Replace P.E. valve. Refer to Replacing P.E.
Valve on page 42.
Connector loose. Reattach connector.
Defective P.C. board. Replace P.C. board. Refer to Replacing
P.C. Board on page 58.
SYMPTOM PROBABLE CAUSE SOLUTION

SECTION 4—TROUBLESHOOTING
Part No 1148070 19 Perfecto2
™
Unit not operating: Alarm:
On or Off
Internal Status Indicators:
RED: Two Flashes
GREEN: Four Flashes Or
RED: Two Flashes GREEN:
Five Flashes
P.C. board Failure. Replace P.C. board.Refer to Replacing P.C.
Board on page 58.
Low Concentration: NOTE:
Check for O2purity using a
calibrated Oxygen Analyzer
at Test Point 1 (oxygen
outlet) of the concentrator.
Internal Status Indicators:
RED: Two Flashes
GREEN: One Flash73%
Shutdown Control Panel
Indicators: SensO2ONLY:
RED: On
YELLOW: Off
GREEN: Off
For SensO2units, the RED
indicator will signal extremely
low purity and will be
accompanied by a continuous
audible alarm and a system
shutdown. Repairs are
required.
Cabinet filters dirty. Clean or replace. Refer to Cleaning the
Cabinet Filter on page 24, Replacing the
Outlet HEPA Filter on page 25, and
Replacing the Compressor Inlet HEPA
Filter on page 26.
Compressor inlet filter dirty. Replace inlet filter. Refer to Replacing the
Compressor Inlet HEPA Filter on page 26.
Compressor:
a. Defective.
b. Faulty capacitor.
c. Bad motor windings.
d. Worn seals.
e. Bad bearings.
f. Leak at fittings or tubing.
g. Leaky or defective relief valve.
h. Insufficient voltage (outlet).
a. Replace compressor. Refer to
Replacing Compressor Assembly on
page 31.
b. Replace capacitor. Refer to Replacing
Capacitor on page 33.
c. Replace compressor.
d. Rebuild top end of compressor. Refer
to Rebuilding the Thomas Model
2660 Compressor on page 34.
e. Replace compressor.
f. Replace fittings or tubing.
g. Replace relief valve.
h. DO NOT use extension cords.
Heat exchanger:
a. Leak at tubing or body chamber.
b. Inspect tubing and heat
exchanger.
a. Replace or retighten.
b. Replace or retighten tubing. Replace
heat exchanger. Refer to Replacing
Heat Exchanger Assembly on
page 51.
Regulator cracked or leaking. Replace. Refer to Replacing Regulator on
page 48.
Exhaust muffler dirty or plugged. Replace. Refer to Replacing the Muffler
Assembly on page 26.
Fan:
a. Not operating. Unit overheating.
b. Faulty fan.
a. Leads to fan disconnected.
Reconnect.
b. Replace.Refer to Replacing Cooling
Fan on page 55.
Sieve beds defective. Replace. Refer to Checking Sieve Bed
Pressure on page 86.
Tubing kinked or blocked. Repair or replace.
SYMPTOM PROBABLE CAUSE SOLUTION

SECTION 4—TROUBLESHOOTING
Perfecto2
™20 Part No 1148070
Low Concentration
(Continued)
P.C. board:
a. Shifts at wrong pressures.
Check pressure at product tank. Pressure
should rise to 21 p.s.i. at shift point. If not,
replace P.C. Board. Refer to Replacing P.C.
Board on page 58.
Flowmeter:
a. Flowmeter opened beyond
maximum flow rate.
b. Cracked or broken fitting.
c. Input tubing leaking or loose.
a. Return flow to maximum setting.
b. Replace fitting.
c. Repair or replace. Refer to Replacing
Flowmeter on page 63.
Timing. To accommodate for varying tolerances
when replacing components, an adjustable
timer is used to control the shifting of the
Pressure Equalization (P.E.) valve. Refer to
Timing on page 73.
P.E. valve:
a. Bad coil.
b. Restrictor blockage.
a. Replace P.E. valve.
b. Replace P.E. valve. Refer to Replacing
P.E. Valve on page 42.
Inspect P.C. board restrictor tubing
for kinks or tears.
Replace P.C. board. Unit may need
retiming after board replacement. Refer to
Replacing P.C. Board on page 58.
Fluctuating Flow: Regulator/Flowmeter:
a. Incorrectly set regulator.
b. Flowmeter malfunction.
a. Check pressure at oxygen outlet.
Adjust regulator.
b. If flow is still unstable, check for leaks
starting at the compressor outlet
fitting through all pneumatic
connections. If no leaks are found
and flow is still fluctuating, replace
the regulator. If pressure at test point
is within spec (5 p.s.i. ± 0.5 max.
[34.4 kPa ± 6.89]), replace
flowmeter. Refer to Replacing
Flowmeter on page 63.
Outlet HEPA filter:
a. Dirty or plugged a. If low flow conditions persist, replace
outlet HEPA filter. Refer to Replacing
the Outlet HEPA Filter on page 25.
Unit Excessively Loud: Pneumatic exhaust:
a. Muffler cracked, damaged or
missing.
b. Muffler tubing disconnected or
damaged.
a. Replace. Refer to Replacing the
Muffler Assembly on page 26.
b. Reconnect or replace tubing.
Compressor inlet filter missing and/or
orange sticker removed.
a. Replace compressor inlet filter. Refer
to Replacing the Compressor Inlet
HEPA Filter on page 26.
Compressor removed. a. Replace Compressor. Refer to
Replacing Compressor Assembly on
page 31.
Incorrect style of inlet filter
(aftermarket).
a. Replace with factory OEM sound
reduced style inlet HEPA filter.
SYMPTOM PROBABLE CAUSE SOLUTION