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Invacare 90-2 Mobility Aid User Manual

1. DI 81 High Pressure W au E AEE 81 OX gen Sensor ya PME 82 P E ValvesCoil estu s ns a m mau a ris a a wh aW a ua hh u i as 84 SECTION 25 SIEVE BED PRESSURE CHECK DO Checking Sieve Bed Pressure as depre utu dee sonda osos een res ebd e 86 Disassembly RE 86 Pressure Testini tess sous i teo edge 86 LIMITED WARRANTY 000000000000000000000000000000000000000000000000000000000000000000000 88 Part No 1148070 5 Perfecton SPECIAL NOTES 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 SIGNAL WORD MEANING Danger indicates an imminently hazardous situation which DANGER 3 RE if not avoided will result in death or serious injury Warning indicates a potentially hazardous situation which if WARNING not avoided could result in death or serious injury Caution indicates a potentially hazardous situation which if CAUTION not avoided may result in property damage or minor injury or both NOTICE THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE A DANGER DO NOT SMOKE while using this device Keep all matches lit cigarett
2. 24 Cleaning the Cabinet Filter a iin herpes eos u q up ie e choi rhe Ried 24 Replacing the Outlet HEPA Filter l nadie dioe diaeta buts 25 Check the Outlet HEPA Filter irl dibus eb RO ee ui Miri 25 Replace the Outlet HEPA Filter da diete QUAD 25 Replacing the Compressor Inlet HEPA Filter u 26 Replacing the Muffler Assembly n coste romeo roten u 26 Cleaning the Heat Exchanger tote eei enituit Mb etaed 29 SECTION 7 COMPRESSOR 3l Replacing Compressor Assembly u 3l Replacing 33 Rebuilding the Thomas Model 2660 Compressor sse 34 Removing Compressor and Compressor Heads 35 Rebuilding the pd coe ee dede debes 38 SECTION 8 P E VALVE ee eee eee eeeeocooseeeeesecccoseccecccccosccccccccoocceeccee 42 Replacing P E Valve coiere tbc a biais Qaqa s 42 SECTION 9 SIEVE BEDS 44 Replacing Sieve Beds tiep Piet si cede huan nanus 44 Part No 1148070 3 Perfecto TABLE OF CONTENTS TABLE OF CONTENTS SECTION 10 VA
3. 01 FLONx JosseJduio doy asneupq e ejdey JeSueu x H ue O aauin au sv 5507 JAMO 72945 3 u 2945 19314 Vd3H peu 5 uqe e e dey ues 5 Osu S SLINN uone 3ue uo 2945 sax Osu s LNOHLIM SLINN uoneJ3ue2uo 082 eyey peu uqe ue INOH JO IWA P1029 NOILOAdSNI HOV3 NO QqHOO3u 3ONVN3LNIVIA J3ALLN3JA3Hd FIGURE 6 7 Preventative Maintenance Record 30 Part No 1148070 Perfecto SECTION 7 COMPRESSOR SECTION 7 COMPRESSOR A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing Replacing Compressor Assembly NOTE For this procedure refer to FIGURE 7 1 on page 32 and FIGURE 7 2 on page 33 Unplug unit Remove the cabinet Refer to Removing Cabinet on page 23 Cut the tie wrap that secures the intake hose to the compressor assembly Detail A Disconnect intake hose from compressor assembly Detail A Remove compressor wires from wire clamps or tie wraps not shown Disconnect compressor connector from the main harness connector not shown Disconnect capacitor wire
4. Tools Required Torque wrench that has an inch pound scale for head screws set screws flapper valve screw and pipe plugs Torx T 25 drive for torque wrench for head screws Torx T 27 drive for torque wrench for retainer screws e 1 8 inch Allen wrench attachment for torque wrench for eccentric set screw 5 32 inch Allen wrench attachment for torque wrench e Flat blade screwdriver attachment or 1 4 inch hex socket for torque wrench for flapper valve screw e Two flat blade screwdrivers e Rubber Mallet Phillips screwdriver attachment for torque wrench for retainer screws Perfecto 34 Part No 1148070 SECTION 7 COMPRESSOR CAUTION DO NOT lubricate or use oil on any moving parts The compressor eccentric uses a precision sealed bearing Therefore additional lubrication is not necessary Removing Compressor and Compressor Heads Compressor 1 Unplug concentrator and carefully remove compressor from concentrator Refer to Replacing Compressor Assembly on page 31 Compressor Head Plate NOTE For this procedure refer to FIGURE 7 3 1 Clean loose dirt from the outside of the compressor Head Screws Head Screws 2 Use the Torx T 25 torque wrench and loosen the eight head screws 3 Note head placement before removing compressor head plate Compressor 4 Remove the compressor head plate Head Valve Plates NOTE For this procedure refer to FIGURE 7 3 1 Note the po
5. Check Valves Air Inlet i Ji i x i lt 77 Fg en Cabinet i NI ii Filter i v a E H Compressor Fa Inlet Filter E i Sieve Sieve ii Bed i Bed ME i Ioi E AE EAS i 4 way Compressor Valve 5 i I TW eau i Solenoid Relief Pilot Valve 22 Bl NN I i EN Part No 1148070 15 Perfecto SECTION 4 TROUBLESHOOTING SECTION 4 TROUBLESHOOTING Normal Operation No Problems Internal Status Indicators RED Off GREEN Off Unit plugged in power switch on Single beep on start up Power loss No Problems Internal Status Indicators RED Off GREEN Off Unit unplugged power switch on alarm off Power loss Internal Status Indicators RED Off GREEN Off Unit plugged in power switch alarm off battery Free circuit drained No power at outlet Power cord a Frayed b Broken or damaged spade c Spade connector from power cord loose or disconnected inside back of unit On Off switch a Disconnected wire b Faulty switch Circuit breaker tripped Perfecto 16 System Okay Battery Free Circuit drained Plug in cord and turn power switch ON 1 to recharge Check electrical outlet with a table lamp or voltmeter set on 50 200 VAC scale If outlet isn t working check protective device in h
6. 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 Perfecto 12 Part No 1148070 SECTION 2 INSTALLATION SEQUENCE OF OPERATION 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 5 1 144 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 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 BEEP 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 SensO Oxygen Sensor Technology Ceramic Zirconia Sensor Technical Des
7. To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 21 1 on page 72 Operation The Perfecto2 with SensO Concentrator is equipped with an oxygen purity indicator This feature monitors the purity level of the oxygen generated by the concentrator If purity falls below alarm thresholds indicator lights on the control panel will illuminate NOTE Concentrator may be used during the initial start warm up time approximately 30 minutes while waiting for the purity to reach maximum When the unit is turned on the GREEN light will come on SYSTEM greater than 85 After five minutes the oxygen sensor will be operating normally and will control the indicator lights depending on oxygen concentration values The explanation of the indicator light functions are as follows Indicator Lights NOTE Indicator lights are visible only when lit GREEN light O2 Normal Operation YELLOW light A Call supplier IMMEDIATELY You may continue to use the concentrator unless instructed otherwise by your supplier Be certain that backup oxygen is nearby RED light Total unit shutdown Switch IMMEDIATELY to backup oxygen supply Call supplier IMMEDIATELY GREEN light with YELLOW light flashing Call supplier IMMEDIATELY Oxygen sensor malfunctioning you may continue to use the concentrator Indicators If your unit does not feat
8. CONTENTS SPECIAL NOTES FEATURES 7 TYPICAL PRODUCT PARAMETERS D SECTION IMPORTANT SAFEGUARDS 10 Important SATUS u u beate Doa 10 Radio Frequency Interference_ u iii iiss To Reduce The Risk Of Burns Electrocution Fire Or Injury To Persons SECTION 2 INSTALLATION SEQUENCE OF OPERATION 12 Verification of Battery Free Power Loss Alarm u 12 Sequence of 12 SensO Oxygen Sensor Technology Ceramic Zirconia Sensor 13 Technical MSS ONO ease 13 Operating Sequence u uy u nn da qaqa a a G pss 13 SECTION 3 PNEUMATIC DIAGRAM 00000000000000000000000000000000000000000000000 5 SECTION 4 TROUBLESHOOTING 0000000000000000000000000000000000000000000000000000 16 SECTION 5 CABINET 00000000000000000000000000000000000000000000000000000000000000000000 23 Rermoving CablflBE uoo aqa ha 23 SECTION 6 PREVENTIVE MAINTENANCE
9. Detail C N Replace any tubing that appears cracked worn etc 8 Re install cabinet Refer to Removing Cabinet on page 23 Refer to Typical Product Parameters on page 8 for concentration levels If low concentrations are observed refer to Troubleshooting on page 16 Perfecto 76 Part No 1148070 SECTION 23 LEAK TEST DETAIL A Valve Hose Connections STEP 6D Connections STEP 6D Hose Hose Connections to Connections Top Fittings of Sieve p Fittings Beds STEP 6C of Sieve Beds 5 6 Sieve Bed Sieve Bed Hose fitting on Center Port of 4 way Valve Manifold Assembly STEP 6B Hose Connections to Hose Bottom Fittings Connections to of Sieve Beds Bottom Fittings STEP 6C of Sieve Beds STEP 6C Sieve Bed Hose Connection At 4 way Valve manifold Assembly STEP 6A DETAIL B 4 Way Valve Manifold Assembly DETAIL Check Fitting Heat Exchanger Assembly Product Cap Tank Check all hoses Fitting valves attached FIGURE 23 1 Leak Test Part No 1148070 77 Perfecto SECTION 23 LEAK TEST 4 Way Valve Function Test NOTE For this procedure refer to FIGURE 23 1 on page 77 The 4 way valve used in the Perfecto2 Series Concentrators does have an acceptable tolerance of
10. Off YELLOW Off GREEN Off Fan operates Compressor not operating b Connector loose or disconnected c Faulty wiring P C board faulty P C board a Malfunction High Pressure Internal Status Indicators RED One Flash GREEN Two Flashes Unit plugged in power switch b Disconnected wire on continuous alarm Compressor shut down c Shifting valve at pressures greater than 25 p s i for Perfecto2 4 way Valve a Not shifting b Bad coil c Coil resistance Compressor inlet filter dirty or plugged Part No 1148070 Replace P C Board Refer to Replacing P C Board on page 58 Repair or replace connector Replace Refer to Replacing the Transformer on page 61 Reattach connector Replace transformer assembly Refer to Replacing the Transformer on page 61 Replace P C board Unit requires retiming after P C board replacement Refer to Replacing P C Board on page 58 Set flow to max L min for concentrator Check voltage across Pilot Valve on 200 volt scale If meter reads 0 volts when unit is turned on replace P C board Check spade connectors on pilot valves or 2 and connectors on P C board Replace P C board Unit requires retiming after P C board replacement Refer to Replacing P C Board on page 58 Check voltage If voltage rises to approximately 24 volts D C when unit shuts down P C board is functioning properly Replace the
11. PVC tubing is damaged in any way replace the section of inch PVC tubing before installing check valve s NOTE Ensure check valves are not crossed Left barb product tank check valve goes to left barb on sieve bed Right barb product tank check valve to right barb on sieve bed Perfecto 46 Part No 1148070 SECTION 10 VALVES 8 Reinstall compressor inlet HEPA filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 9 Run units and check for leaks Refer to Leak Test on page 76 10 Reinstall cabinet Refer to Removing Cabinet on page 23 Location of Product Tank 4 PVC Inlet Tubing Check Valves Regulator Outlet Tubing f Tie wrap Mew Check Valves Tie wrap Regulator ______ m Tie wrap Flow Arrow Product Tank FIGURE 10 1 Replacing Check Valves Part No 1148070 47 Perfecto SECTION REGULATOR SECTION REGULATOR Replacing Regulator A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 11 1 on page 49 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 NOTE On concentrator models with the SensO unit ONLY remove the 1 8 inch tubing to oxygen sensor housing 3 Remove the four mounting screws that secure regulator to product tank cap 4 Remove regulator from product tank lid ensuring that the O
12. Perfecto 40 Part No 1148070 17 SECTION 7 COMPRESSOR COMPRESSOR PARTS LEGEND 1 Connecting Rod Eccentric amp Bearing Assembly 2 Piston Cup 3 Screw Piston Cup Retainer 4 Piston Cup Retainer 5 Cylinder Sleeve 6 Head 7 O Ring Head Gasket 8 Screw Head 9 Valve Plate Assembly 10 Valve Restraint 11 Valve Keeper Strip 12 Valve Flapper Intake amp Exhaust 13 Valve Plate 14 Screw Valve Flapper 15 O Ring Valve Plate 16 Fan Gray 17 Fan Black FIGURE 7 7 Compressor Exploded View Part 1148070 41 Perfecto SECTION 8 P E VALVE SECTION 8 P E VALVE Replacing P E Valve A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 8 1 on page 43 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 3 Remove the compressor inlet HEPA filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 4 Remove spade connectors from P E valve terminals 5 Remove tie wraps from P E valve tubing 6 Remove P E valve assembly from tubing CAUTION If P E valve is not to be installed IMMEDIATELY plug the P E valve tubing to prevent sieve bed contamination 7 Install new P E Valve assembly IMMEDIATELY by reversing STEPS 3 5 8 Reinstall the compressor inlet HEPA filter Refer to Replacing the Compresso
13. Refer to Timing on page 73 P E valve a Bad coil a Replace P E valve b Restrictor blockage b Replace P E valve Refer to Replacing P E Valve on page 42 Inspect P C board restrictor tubing Replace P C board Unit may need for kinks or tears retiming after board replacement Refer to Replacing P C Board on page 58 Fluctuating Flow Regulator Flowmeter a Incorrectly set regulator Check pressure at oxygen outlet b Flowmeter malfunction Adjust regulator 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 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 Replace Refer to Replacing the missing Muffler Assembly on page 26 Muffler tubing disconnected or Reconnect or replace tubing damaged Compressor inlet filter missing and or Replace compressor inlet filter Refer orange sticker removed to Replacing the Compressor Inlet HEPA Filter on page 26 Compressor removed Replace Compressor Refer to Replacing Compressor Assembly on
14. Replacing the Transformer A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 16 1 on page 61 N 8 9 SN St gu Ur ope Unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Locate the transformer located on the sound box Code all wires before disconnecting for proper re connections Remove the two mounting screws that secure the transformer to the soundbox Note orientation of transformer on soundbox before removing for proper reinstallation Remove the existing transformer and discard Install new transformer in orientation noted in STEP 7 Connect all wires as noted from STEP 4 10 Reinstall cabinet Refer to Cabinet on page 23 Location of m DETAIL A ransformer Transformer lel Assembly Screws f FIGURE 16 1 Replacing the Transformer Part No 1148070 61 Perfecto SECTION 7 ON OFF SWITCH SECTION 1 7 ON OFF SWITCH Replacing On Off Switch A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 17 1 on page 62 1 Unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Remove control panel Refer to Removing Control Panel on page 53 Remove and code the four spade connectors from back of exis
15. and press On Off VO switch to the On 1 position An intermittent audible alarm will sound This confirms proper operation of the Battery Free Power Loss Alarm Turn On Off switch Off O 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 I 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 airis 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
16. cabinet Refer to Removing Cabinet on page 23 Hour Meter Hour Meter Housing NON AN Hour Meter NS gt Connectors lt a gt Wires Back of Control Panel Hour Meter Retaining Clips Hour Meter Housing FIGURE 19 1 Replacing Hour Meter Perfecto 64 Part No 1148070 SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing CAUTION This is a maintenance free valve Opening the valve will void any and all warranties applicable to the valve Replacing 4 Way Valve and or Manifold Assembly NOTE For this procedure refer to FIGURE 20 1 on page 67 Unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Cut the one tie wrap that secures the manifold exhaust tube to the F tube Remove the manifold exhaust tube from the F tube Cut the two tie wraps that secure the F tube to the 4 way valve manifold assembly Remove the F tube from the 4 way valve manifold assembly dee Leo des Using a hose clamp tool remove the clamps that secure the vinyl tubes to the 4 way valve manifold assembly ge Remove the vinyl tubes from both sides of the 4 way valve manifold assembly 9 Note the orientation of the 4 way valve manifold assembly before removing for correct re installation 10 Lift 4 way valve man
17. flowmeter is installed Remove control panel Refer to Removing Control Panel on page 53 Remove palnuts that secure flowmeter to the control panel Remove flowmeter from front of control panel Install new flowmeter reversing STEPS 4 5 Reinstall control panel Refer to Removing Control Panel on page 53 09 Run unit and check for leaks where PVC tubing engages flowmeter barbed fittings Refer to Leak Test on page 76 10 Reinstall cabinet Refer to Removing Cabinet on page 23 Flowmeter Barbed Fittings Back of Flowmeter Palnuts Flowmeter Control Panel FIGURE 18 1 Replacing Flowmeter Part No 1148070 63 Perfecto SECTION 9 HOUR METER SECTION 19 HOUR METER Replacing Hour Meter A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 19 1 1 Unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Remove control panel Refer to Removing Control Panel on page 53 gt N Remove and label the two hour meter connectors and wires connected to back of hour meter Spread retaining clips on hour meter housing that secure hour meter to control panel Remove hour meter by pushing meter through front of control panel Install new hour meter reversing STEPS 4 6 Reinstall control panel Refer to Removing Control Panel on page 53 MO Sh Reinstall
18. from electrical outlet before servicing NOTE For this procedure refer to FIGURE 13 1 on page 54 Tools Required Diagonal cutters e Flathead screwdriver e inch ratchet inch socket and 4 inch extension Pliers Tie wraps Unplug unit Remove cabinet Refer to Cabinet on page 23 Cut the two tie wraps that secure the control panel to the sieve beds Detail A eS qu Cut the two tie wraps that secure the P E valve assembly to the control panel not shown e Remove the two mounting screws that secure the control panel to the sound box Detail B Remove the inch I D tubing from the top and bottom barbed fittings of the flowmeter Detail B D N Cut tie wrap and remove 1 inch I D tubing from the patient outlet barbed fitting behind the control panel Detail B 8 Remove the two mounting screws that secure the P C board to the control panel NOTE Before performing STEP 9 code all wires to ensure correct reinstallation 9 Remove spade connectors from circuit breaker hour meter and On Off VO switch Jumper wire harness from On Off switch to circuit breaker does not have to be removed 10 Remove the hour meter Refer to Replacing Hour Meter on page 64 11 Remove the On Off switch Refer to Replacing On Off Switch on page 62 12 Remove the circuit breaker by twisting the locknut on the outside of the control panel 13 Discard existing control panel 14 Ins
19. hose on the compressor assembly if necessary Detail A 7 Disconnect spade connectors from fan terminals on side of cooling fan NOTE The cooling fan is fastened to the soundbox with four rubber grommets on each corner 8 Lift cooling fan up and dislodge the rubber grommets from the soundbox Detail B 9 Remove the rubber grommets from the existing cooling fan Detail C 10 Note the orientation of the installed rubber grommets There are two recessed areas on the rubber grommet The larger recessed area of the grommet is installed in the fan The smaller recessed area is installed in the sound box 11 Inspect rubber grommets for damage If damage is found do not use Order new rubber grommets before installing fan 12 Install rubber grommets into new cooling fan with larger recessed area installed in the fan Detail C CAUTION Fan MUST be positioned properly so air from the fan blows DOWN onto the compressor see air flow arrow on back of fan or damage to the unit will occur 13 Position cooling fan onto soundbox Detail B 14 Pull rubber grommets down into the sound box Detail D Part No 1148070 55 Perfecto SECTION 4 COOLING FAN 15 16 17 18 19 20 21 22 23 Connect spade connectors to fan terminals on side of cooling fan Detail B Move resonator housing back into position Detail A Secure the resonator housing to the soundbox with the three mounting scre
20. leakage per RexRoth By nature of the valve design it is possible for the valve to experience small leaks and still operate without affecting the overall performance of the unit The valve is assembled where the components that make up the valve Snap together The only screws in the valve are for securing the valve to the manifold assembly According to RexRoth there is an acceptable leak specification of 60 cc per minute at 20 psi on each valve Valves that have leaks within this specification will function properly without any adverse effects to the performance of the concentrator A leak in the amount of 60 cc or less would be indicative of the type of small leak you would notice where the end caps connect to the main body or where the three pieces of the main body connect together A 60 cc leak would not be noticeable when examining the system pressure swings Leaks greater than 60 cc are indicative of cracks in the end caps or a blown seal where the end cap connects to the main body of the valve These leaks are detected by either reading the system swing pressures noticing two consecutive swings not being equal or by hearing an audible leak every other cycle Leaks of this extreme nature indicate the valve needs to be replaced Valves should only need to be replaced when the following conditions exist 1 A visible crack is noted on either of the end caps or main body of the 4 way valve regardless of the amount of leak 2 A
21. of the unit is within specification 13 If the oxygen output concentration is not within specification rerun the autotune again 14 Reinstall the cover screws NOTE PC board is exploded away from control panel for clarity there is no need to remove P C Board from control panel Board FIGURE 22 1 Autotuning Perfecto 74 Part No 1148070 SECTION 22 TIMING Manual Tuning NOTE For this procedure refer to FIGURE 22 2 1 Turn power off and unplug the unit 2 Remove cabinet Refer to Removing Cabinet on page 23 3 Plug unit in but DO NOT turn on until instructed to below 4 Locate the timing switch on the board 5 Inserta small common or flathead screwdriver into the adjustment screw of the timing switch Set the timing switch initially at the number 7 position 7 Turn unit on I and wait 15 minutes for unit to stabilize 8 If after 15 minutes of run time the concentration is below specification change setting to a number one position lower than the previous setting 9 Letunit run ten minutes If concentration is lower still change the switch to number two positions higher NOTE You will find that the concentrator will perform better at either the higher or lower setting The normal adjustment range is between timing positions 3 and A 10 Continue to change setting one step at a time up or down until the concentration is the highest value achievable 11 Onc
22. page 34 Install fan with air flow arrow pointing down Clean heat exchanger Replace heat exchanger Refer to Replacing Heat Exchanger Assembly on page 51 Replace compressor Refer to Replacing Compressor Assembly on page 31 Replace capacitor Refer to Replacing Capacitor on page 33 Replace compressor Replace compressor Replace compressor Have line voltage inspected by certified electrician A voltage regulator may be required and is obtainable from your local electric company Replace P C board Refer to Replacing P C Board on page 58 Unit may need retiming after P C board replacement Refer to Timing on page 73 Reattach connector Replace transformer assembly Refer to Replacing the Transformer on page 61 Perfecto SECTION 4 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTION Unit Operating Internal repairs required Replace SensO circuit board Refer to Internal Status Indicators Replacing Board on page 58 RED Three Flashes GREEN One Flash Control Panel Indicators RED Off YELLOW Flashing GREEN On Low Flow Alarm does not System leak Repair leak in product tank regulator activate on flows less than 0 5 tubing fittings or flow meter L min Defective check valves Replace check valves Refer to Replacing Check Valves on page 46 Perfecto 22 Part No 1148070 SECTION 5 CABINET SECTION 5 CABINET Removing Cabine
23. procedure refer to FIGURE 10 1 on page 47 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 NOTE Replace one or both check valves when performing this procedure The check valves are one way directional and can be checked by passing air through them Air should flow in one direction only 3 It may be necessary to remove the compressor HEPA inlet filer Refer to Replacing the Compressor Inlet HEPA Filter on page 26 4 Remove tie wraps from top and bottom of the check valve s and disconnect check valve s from 4 inch PVC tubing A WARNING The check valves are one way directional and MUST be installed correctly The letters VAC are printed on the check valves The check valves MUST be installed with the on the underside of the check valve Low system pressures and eventual bed contamination will result if check valves are not properly installed CAUTION DO NOT puta check valve on the regulator outlet tubing Otherwise damage may result The regulator outlet tubing is identified by the flow arrow on the side of the regulator which points to it e Install the new check valve s into the 4 inch PVC tubing on inlet tubing only 6 Make sure VAC is on the underside of the check valve to ensure proper orientation of check valves when installing N Secure the check valve s by installing new tie wraps to the 1 4 inch PVC tubing where previously removed NOTE If inch
24. to SensO Alarm Threshold on page 83 for shutdown mode FIGURE 24 2 3 Replace tubing and tie wrap NOTE If any alarm fails to perform to specification contact Invacare Technical Service Part No 1148070 8 Perfecto SECTION 24 ALARM TEST Location of In Line Connector In Line Connector FIGURE 24 2 High Pressure Test Oxygen Sensor NOTE For this procedure refer to FIGURE 24 3 on page 83 Alarm sequence occurs when concentration levels fall below a preset value typically 73 3 or 85 2 This failure indicates a catastrophic failure of any component mechanical or electrical 1 Turn unit on 1 Set output flow at 5 L min 2 Monitor the level 3 With the level greater than 85 after five minutes the GREEN panel indicator light will remain illuminated Perfecto 82 Part No 1148070 SECTION 24 ALARM TEST B Slowly adjust flow beyond maximum rated flow until you can achieve a concentration level greater than 7576 but less than 8476 Within 30 minutes the YELLOW panel indicator light will illuminate and the unit will continue to run Clamp off the 1 8 inch oxygen sensor tubing between the oxygen sensor and the product tank regulator A WARNING Use care not to cut oxygen sensor tubing when clamping the oxygen sensor tubing 6 Within 30 minutes the Oxygen Sensor Alarm should activate and the RED panel light indicator will illuminate The compressor will shut down
25. valve if shorted or open Refer to Replacing 4 Way Valve and or Manifold Assembly on page 65 Replace 4 way valve Refer to Replacing 4 Way Valve and or Manifold Assembly on page 65 Coil should read 175 ohm 20 Replace compressor inlet filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 Perfecto SECTION 4 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTION LOW PRESSURE Compressor Internal Status Indicators a Leaks at fittings or tubing Replace or repair RED One Flash b Leaking or defective relief valve Repair leak or replace GREEN One Flash c Insufficient voltage at outlet DO NOT use extension cords Use Or another outlet RED One Flash d Worn cup seals or gaskets Rebuild top end of compressor Refer to Rebuilding the Thomas Model GREEN Three Flashes 2660 cue on page 34 Control Panel Indicators Heat exchanger RED On a Leak at tubing or body chamber Replace or retighten YELLOW Of b Inspect tubing and heat Replace or retighten tubing Replace exchanger heat exchanger Refer to Replacing Heat Exchanger Assembly on page 51 kin M ide HA Replace regulator Refer to Replacing Compressor shut down Regulator on pape se Failure to cycle due to low P E valve leaking Replace P E Valve Check voltage at P E pressure valve connector on 24 volt D C scale The P E Valve activates or energizes approximately one second prior to t
26. 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 Part No 1148070 II Perfecto SECTION 2 INSTALLATION SEQUENCE OF OPERATION 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
27. with the alarm 8 inch I D Oxygen Sensor Tubing Clamp Off Flow FIGURE 24 3 Oxygen Sensor SENSO ALARM THRESHOLD LABEL STATUS INDICATOR LIGHTS SYMBOL SYSTEM OKAY GREEN Indicator Light O2 over 85 2 Between 73 3 YELLOW Indicator light to 85 2 A YELLOW Solid B YELLOW Flashing Sensor Failure Call a qualified technician SYSTEM FAILURE RED Indicator light O Below 73 3 Continuous Audible Alarm Sieve GARD Compressor Shutdown Call a qualified technician Part No 1148070 83 Perfecto SECTION 24 ALARM TEST P E Valve Coil Test NOTE For this procedure refer to FIGURE 24 4 NOTE P E Valve Coil Alarm sequence occurs when the P E Valve Coil connection or Board Circuitry has failed 1 With the unit running and flow set at 5 L min remove one YELLOW wire from the P E valve coil The valve coil alarm should activate within 10 seconds 2 Reinstall cabinet Refer to Removing Cabinet on page 23 NOTE If any alarm fails to perform to specification contact Invacare Technical Service NOTE If problems arise during test contact Invacare Technical Service for further assistance Valve Yellow Wires FIGURE 24 4 P E Valve Coil Test Use the chart in Preventive Maintenance on page 24 to record date and number of hours when preventive maintenance was performed on the concentrator or any repairs made Perfecto 84 Par
28. B Disconnect pressure sensor tubing from product tank not P C Board C For concentrators that have O2 sensor disconnect the oxygen sensor tubing from regulator fitting Refer to Replacing Regulator on page 48 5 Remove the two mounting screws on top corners of P C board 6 Position new board Perfecto 58 Part No 1148070 SECTION 15 BOARD 7 Secure new P C board in place with existing mounting screws Be sure all tie wraps removed from tubing connections are replaced 8 Do the following A Connect wiring harnesses to P C board B Connect pressure sensor tubing to product tank C For concentrators that have O2 sensor Connect the oxygen sensor tubing to regulator fitting 9 Reinstall control panel Refer to Removing Control Panel on page 53 10 Run concentrator to ensure unit operates to specifications 11 After replacing P C board retiming may be necessary Refer to Timing on page 73 12 Check for leaks at pressure sensor tubing on product tank cap Refer to Leak Test on page 76 13 Reinstall cabinet Refer to Removing Cabinet on page 23 Part No 1148070 59 Perfecto SECTION 15 BOARD Control Panel Wiring Harnesses Connect Here Oxygen Sensor Tubing IRCSPO2 only Board Mounting Screw Mounting Screw Pressure Sensor Tubing FIGURE 15 1 Replacing P C Board Perfecto 60 Part No 1148070 SECTION 16 TRANSFORMER SECTION 16 TRANSFORMER
29. EN Four Flashes Or RED Two Flashes GREEN Five Flashes Low Concentration NOTE Check for O purity using a Cabinet filters dirty calibrated Oxygen Analyzer at Test Point oxygen outlet of the concentrator Internal Status Indicators RED Two Flashes GREEN One Flash73 Shutdown Control Panel Indicators SensO ONLY RED On YELLOW Off GREEN Off Compressor a Defective Faulty capacitor Bad motor windings Worn seals For SensO2 units the RED indicator will signal extremely low purity and will be accompanied by a continuous audible alarm and a system shutdown Repairs are required Bad bearings Leak at fittings or tubing Leaky or defective relief valve Insufficient voltage outlet Heat exchanger a Leak at tubing or body chamber b Inspect tubing and heat exchanger Compressor inlet filter dirty SOLUTION Replace P C board Refer to Replacing P C Board on page 58 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 Replace inlet filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 Replace compressor Refer to Replacing Compressor Assembly on page 3l Replace capacitor Refer to Replacing Capacitor on page 33 Replace compressor Rebuild top end of compressor Refer to Rebuilding the Thomas Model 2660 Co
30. FAILURE RED Indicator light Continuous Audible Alarm Sieve GARD Compressor Shutdown Call a qualified technician Part No 1148070 9 Perfecto SECTION IMPORTANT SAFEGUARDS SECTION IMPORTANT SAFEGUARDS Important Safeguards In order to ensure the safe installation assembly and operation of the Perfecto 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 A 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 minute
31. LVES 000000000000000000000000000000000000000000000000000000000 46 Replacing Check Valves 46 SECTION I REGULATOR 00000000000000000000000000000000000000000000000000000000000000 48 Replacing Regulators C 48 Adj sting TRS ME OMe Coast ous otio aes 49 SECTION 12 EXCHANGER ASSEMBLY D Replacing Heat Exchanger Assembly 5 SECTION 13 CONTROL PANEL 5 3 Removing Control 53 SECTION 14 COOLING FAN D D Replacing Cooling Pallio u an Qu us ua ara 55 SECTION 15 BOARD 58 Replacing P C Board E 58 SECTION 16 TRANSFORMER 6 i Replacing the Transformer 61 SECTION 17 0ON OFF SWITCH 62 Replacing On Off SWIECh uicit toten de u CURAE a 62 SECTION 18 FLOWMETER 63 Replacing FloWmWmet r u aa a rfe qup oborta eA aaa u ash asa Es 63 SECTION I9 HOUR ME
32. O Oxygen System SensO Model Low Flow Alarm 50 F 95 F 10 35 C at 20 60 relative humidity Perfecto 5 Less than Ambient 35 F 19 C Perfecto 5 Less than Ambient 6 F 3 C Impact Resistant flame retardant plastic cabinet that conforms to UL 94 VO Double Insulated Product ETL certified complying with UL 1097 ETL certified to CSA C22 2 No 68 8 Part No 1148070 TYPICAL PRODUCT PARAMETERS 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 20 F 150 F 29 C to 65 C at 15 95 relative humidity ature NOTE Stated concentration levels achieved after initial warm up period approximately 30 minutes IRC5PO2 INDICATORS LABEL PURITY INDICATOR LIGHTS SYMBOL LED SYSTEM OKAY GREEN Indicator Light O over 85 2 O Between 73 3 YELLOW Indicator light to 85 2 A YELLOW Solid B YELLOW Flashing Sensor Failure Call a qualified technician SYSTEM FAILURE RED Indicator Light O Below 73 3 Continuous Audible Alarm Sieve GARD Compressor Shut down IRC5P INDICATORS LABEL STATUS INDICATOR LIGHTS SYMBOL LED SYSTEM OKAY GREEN Indicator Light SYSTEM
33. Service Manual Perfecto 3 Oxygen Concentrator HomeFill Compatible Model IRC5PO2 Sensored Model IRC5P Non Sensored 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 Yes you can A 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 A 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 PERFECTO PARTS COMPATIBILITY The Platinum concentrator and the Perfecto concentrator 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 Perfecto repairs are listed in the Perfecto parts catalog form number 93 038 Please reference this catalog before replacing any parts Use of incorrect parts could result in injury or property damage Perfecto 2 Part No 1148070 TABLE OF CONTENTS TABLE OF
34. TER 000000000000000000000000000000000000000000000000000000000000 64 Replacing Hout Meters 64 SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY 65 Replacing 4 Way Valve and or Manifold Assembly seen 65 Replacing Pilot Valve Poppets and O Rings u 68 SECTION 21 PURITY INDICATORS 7 1 SensO Alarm nt 71 DEST ACI MN EEREN 71 Indicator a 7 tX Models Indicator Light Explanation ioo trt ae t tdi anale ticis t 71 SECTION 22 TIMING 7 3 PUL OCU 73 SF ATE 75 Perfecto 4 Part No 1148070 TABLE OF CONTENTS TABLE OF CONTENTS SECTION 23 LEAK TEST 0000000000000000000000000000000000000000000000000000000000000000 76 Leak Pesta a sahabat RENE 76 4 VVay Valve Fu etion Test ato aed sda race yes acess i aa una a NSS x asa a dnte 78 SECTION 24 ALARM TEST OO Alarm and Sensor Tests u la ak ukasa ia i asas 80 Power LOSS aint Dre reb tni pastu Spend tune pepe RUDI 80 Low Press re u La Eu eee 80 TMB CUE LEST
35. Unscrew the pilot valve stem assembly from the manifold while leaving the coil with yoke and locknut intact on stem 7 Remove pilot valve poppet from inside the pilot valve stem CAUTION DO NOT remove the coil yoke from the coil The washer between the bottom of the yoke and the bottom of the coil MUST not be removed Otherwise components may be damaged in reassembly 8 Set aside the coil with yoke and pilot valve stem assembly with the wires still intact A WARNING DO NOT use sharp tools to remove O ring from plastic manifold opening Damage to the plastic manifold and or plastic manifold airflow passage may occur Damage to airflow may result in improper oxygen delivery and harm to the user Refer to Detail A in FIGURE 20 2 9 Remove poppet and O ring from manifold opening Detail A 10 Discard old poppet and O ring 11 Install new O ring into the opening in the plastic manifold housing Detail A CAUTION DO NOT overtighten pilot valve stem when installing it into plastic manifold Damage to the rubber O ring and or plastic manifold may occur Perfecto 68 Part No 1148070 SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY 12 Install new slotted poppet into the bottom of the pilot valve stem with tapered end facing to the bottom 13 Install pilot valve stem and new slotted poppet with coil with yoke and locknut intact into manifold opening 14 Use a flat blade screwdriver and tighten pilo
36. WAYS disconnect concentrator from electrical outlet before servicing CAUTION Follow these pre cautions to prevent damage to the P C boards Before handling any P C boards you need to be properly grounded to prevent static damage to the components of the board A Static Cuff MUST be worn and properly grounded using an alligator clip Electrical conduit or a water pipe is normally sufficient when a known good ground is not available Care should be taken to ensure that the alligator clip contacts with bare metal surface When removing quick disconnects terminals DO NOT pull on wire itself as damage to the connection may occur Hold down the P C board with one hand and use an upward force with a slight rocking motion to remove the terminals Before installing any P C boards ensure that all insulators are in place NOTE For this procedure refer to FIGURE 15 1 on page 60 1 Unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Remove control panel Refer to Removing Control Panel on page 53 gt Do the following A Disconnect wiring harnesses from PC board A WARNING DO NOT remove oxygen sensor tubing from P C board Remove from regulator ONLY DO NOT remove the pressure sensor tubing from P C board Remove from top of product tank only Damage to oxygen sensor assembly or pressure sensor could occur A faulty sensor may result in improper oxygen delivery and harm to the user
37. age 33 1 2 de Unplug the unit Remove the cabinet Refer to Removing Cabinet on page 23 Using needlenose pliers disconnect the spade connectors from the capacitor terminals Cut the tie wrap that secures the capacitor to the base of the concentrator Remove the capacitor from the concentrator base Install new capacitor by reversing STEPS 3 6 Re install the cabinet Refer to Removing Cabinet on page 23 Capacitor ie Wrap Capacitor Terminals Spade Connectors connect here FIGURE 7 2 Replacing Capacitor Part No 1148070 33 Perfecto SECTION 7 COMPRESSOR Rebuilding the Thomas Model 2660 Compressor A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE This kit is designed for rebuilding the Thomas Model 2660 Series compressor The model number is located on the front of the compressor Compressor numbers for this kit are 2660CE32 2660CE37 and 2660CE50 If the compressor has a different model number than those listed this kit will not work The Thomas 2660 Series Compressor Rebuild Kit p n 1109235 contains the following DESCRIPTION QUANTITY Teflon Piston Cups 2 Aluminum Piston Sleeves Flapper Valves Intake and Exhaust Valve Keepers O Ring Sleeve Valve Plate Gaskets Head Mounting Screws Valve Screws Valve Restraints N ON N BN Piston Cup Retainer Screws
38. assembly 2 Remove the piston cup discard and wipe debris from the top of the connecting rod with a clean damp cloth NOTE As the piston travels DETAIL A BOTTOM OF up and down it will also rock Cylinder Sleeve COMPRESSOR from side to side This is a Eccentric Set Screw Access Hole feature of the WOB L Piston Torque Screw Retainer Ceo Piston Cup Rod Top Eccentric Fan Connecting Rod Set Screw hidden FIGURE 7 4 Removing Compressor and Compressor Heads Rebuilding the Compressor Fan Connecting Rod and Eccentric Assembly Piston Cup Perfecto 36 Part No 1148070 SECTION 7 COMPRESSOR O ring Intake Valve Keeper and Valve Keeper Strip NOTE For this procedure refer to FIGURE 7 5 1 Remove the O ring intake valve flapper and valve keeper strip from the bottom of the valve plate Discard all 2 Clean the bottom of the valve plate with a clean soft cloth Valve Flapper Screw Valve Keeper Strip O Ring Intake Valve Flapper FIGURE 7 5 Removing Compressor and Compressor Heads Rebuilding the Compressor O ring Intake Valve Keeper and Valve Keeper Strip Exhaust Valve Flapper Valve Restraint and Valve Keeper Strip NOTE For this procedure refer to FIGURE 7 6 1 Remove the exhaust valve flapper valve restraint and valve keeper strip from the top of the valve plate Discard all 2 Clean the top of the plate wit
39. ber base FIGURE 6 3 With a flat head screwdriver remove the tubing from both sides of the existing outlet HEPA filter by prying the tubing away from the outlet HEPA filter Discard existing outlet HEPA filter 6 Connect tubing to both sides of the new outlet HEPA filter as shown below Install cabinet Refer to Removing Cabinet on page 23 Tubing Outlet HEPA Filter Tubing FIGURE 6 2 Replace the Outlet HEPA Filter Part No 1148070 25 Perfecto SECTION 6 PREVENTIVE MAINTENANCE Replacing the Compressor Inlet HEPA Filter NOTE For this procedure refer to FIGURE 6 3 on page 26 NOTE Perform this procedure as needed depending upon the environment the concentrator is used in 1 2 pv DY IE Unplug the unit Remove the filter access panel by pressing down on center tab and pulling panel out Grasp the compressor inlet HEPA filter pull outward and up until filter is dislodged from rubber base Discard the existing compressor inlet HEPA filter Install new compressor inlet filter by inserting the filter into the rubber base Push the filter down until the rubber base touches the edge of the filter Reinstall the filter access panel Compressor Inlet HEPA Filter D Center Tab Filter Access Panel Rubber Base FIGURE 6 3 Replacing the Compressor Inlet HEPA Filter Replacing the Muffler Assemb
40. bleshooting on page 16 10 Turn the concentrator off O 11 Disconnect pressure gauge from the HomeFill port and reinstall plug Pressure Gauge Back of 1 4 x 2 inch Concentrator Silicone Tubing with Connector HomeFill Port T 4 FIGURE 25 2 Pressure Testing Part No 1148070 87 Perfecto LIMITED WARRANTY For warranty information please refer to the original owner s manual which came with this product or contact Invacare for more information Invacare Corporation www invacare com USA Canada All rights reserved Trademarks are One Invacare Way 570 Matheson Blvd E Unit 8 identified by and Elyria Ohio USA Mississauga Ontario All trademarks are owned by or licensed 44036 2125 L4Z 4G4 Canada to Invacare Corporation or its subsidiaries 800 333 6900 800 668 5324 unless otherwise noted Teflon is a registered trademark of DuPont Yes you can Eu S Torx is a registered trademark of Textron Inc RexRoth is a registered trademark of BOSCH REXROTH AG GERMANY 2009 Invacare Corporation Part No 1148070 Rev D 04 09
41. cabinet Refer to Removing Cabinet on page 23 Top of Manifold Exhaust Tube Sound Box Rubber Grommet Tie Wraps Throttling Muffler TC um m lt Exhaust Canister DETAIL A Muffler Body 8 Tie Wrap Throttling _ Muffler Exhaust Assembly Muffler Muffler Grommet Grommet Exhaust Canister FIGURE 6 5 Replacing the Muffler Assembly Perfecto 28 Part No 1148070 SECTION 6 PREVENTIVE MAINTENANCE Cleaning the Heat Exchanger A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 6 6 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 CAUTION Use care not to deform heat exchanger when installing removing or cleaning 3 Remove excess dirt using compressed air or vacuum 4 Reinstall cabinet Refer to Cabinet on page 23 Heat Exchanger FIGURE 6 6 Cleaning the Heat Exchanger Part No 1148070 29 Perfecto SECTION 6 PREVENTIVE MAINTENANCE SERIAL NO IRC MODEL NO sipak 40 Jad 54 pp Jad 5 pz sino 097 97 syluoul 9 40 5 Jad skop pp sad 5 pz 8psn o1 24D 5 098 ALON 2IA49 Jo uon2es
42. cription 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 1 the SensO circuit will wait five minutes for the conce
43. dy five p s i 0 5 p s i If pressure is not in specification proceed to STEP 3 If pressure falls within specification no adjustment is needed 3 Unplug unit 4 Remove cabinet Refer to Removing Cabinet on page 23 5 Plug unit in and turn power switch on 1 6 Using the access hole located on the control panel locate the pressure adjustment screw in center of pressure regulator top N Insert a 5 32 inch Allen wrench into the pressure adjustment screw While reading pressure gauge do one of the following Turn pressure adjustment screw or adjustment knob clockwise to increase output pressure or e Turn pressure adjustment screw or adjustment knob counterclockwise to decrease output pressure Part No 1148070 49 Perfecto SECTION REGULATOR 9 Adjust until pressure reads a steady five p s i 0 5 p s i 10 Once required pressure is achieved reinstall cabinet Refer to Removing Cabinet on page 23 11 Refer to Troubleshooting on page 16 if you are unable to adjust or maintain five p s i 0 5 5 1 NOTE After ten minutes of run time retest output pressure of concentrator to insure proper operation and or spec levels Perfecto 50 Part No 1148070 SECTION 12 EXCHANGER ASSEMBLY SECTION 12 HEAT EXCHANGER ASSEMBLY Replacing Heat Exchanger Assembly A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For
44. e concentration has reached specification retiming is complete 12 Reinstall cabinet Refer to Removing Cabinet on page 23 Control Panel OT P C Board 03 26 Manual Timing Switch FIGURE 22 2 Manual Tuning Part No 1148070 75 Perfecto SECTION 23 LEAK TEST SECTION 23 LEAK TEST A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing Leak Test NOTE For this procedure refer to FIGURE 23 1 on page 77 1 Unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Plug in unit Turn the concentrator on 1 gi Ne cue CO Let concentrator run for 20 minutes A WARNING Apply small amount of leak test solution to fittings only Avoid all other components DO NOT leak test 4 way valve body Carefully leak test for pressure leaks around sieve bed hoses at 4 way valve DO NOT allow leak test solution to enter into 4 way valve and system D With leak test solution or equivalent soapy water leak test the following A The two sieve bed hose connection at the 4 way valve manifold assembly Detail A Leak test the hose fitting on center port of 4 way valve manifold assembly Hose connections to top and bottom fittings of sieve beds B D P E valve hose connections E Hose fittings at product tank cap and check valves Detail F Both fittings on heat exchanger assembly
45. es 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 Perfecto 6 Part No 1148070 FEATURES FEATURES FRONT VIEW Oxygen Purity Indicator Lights Fault and Power Indicator Lights SensO2 Model Only Oxygen Outlet Flowmeter Circuit Breaker Power Switch Hour Meter A ACCESSORIES NOT SHOWN PreciseR 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 owner s 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 Outlet Fitting Power Cord Part No 1148070 7 Perfecto TYPICAL PRODUCT PARAMETERS TYPICAL PRODUCT PARAMETERS Electrical Requirements Rated Curre
46. ghten set screw to 40 inch Ibs Detail A of FIGURE 7 4 5 Hold the sleeve down to the housing with one hand and slowly rotate the eccentric with the other hand to ensure all the components are aligned properly Fan NOTE For this procedure refer to FIGURE 7 4 on page 36 1 Reinstall the fan onto the shaft in original orientation Secure into position using a rubber mallet Valve Plate NOTE For this procedure refer to FIGURE 7 3 on page 35 1 With the sleeve located and firmly seated on the housing replace the valve plate in the same manner as it was 2 Repeat step 1 for other valve plate NOTE Make sure the top edge of the sleeve locates in the O ring groove in the bottom of the valve plate CAUTION Make sure that the O ring is not twisted when seated in the groove of the bottom of the valve plate Compressor Heads NOTE For this procedure refer to FIGURE 7 3 on page 35 1 Place the heads on top of the valve plates 2 Tighten the head screws in a criss cross pattern to 40 inch lbs Part No 1148070 39 Perfecto SECTION 7 COMPRESSOR Compressor A WARNING To avoid personal injury or property damage rotate the fan by hand prior to connecting the unit to a power source Check for suction at the air inlet by placing your finger over the port as you rotate the fan You should feel a slight suction with each rotation of the fan If you DO NOT feel a suction but you feel or hear a thump as yo
47. h a clean soft cloth Gasket NOTE For this procedure refer to FIGURE 7 6 1 Remove the old gasket from the top of the valve plate and discard 2 Clean the valve plate with a clean soft cloth Part 1148070 Valve Flapper Screw Gasket Valve Keeper Strip Exhaust Valve Flapper C Valve SSS Restraint FIGURE 7 6 Removing Compressor and Compressor Heads Rebuilding the Compressor Exhaust Valve Flapper Valve Restraint and Valve Keeper Strip 37 Perfecto SECTION 7 COMPRESSOR Rebuilding the Compressor NOTE Before reassembly wipe any residue from all components with a clean soft cloth Gasket NOTE For this procedure refer to FIGURE 7 6 on page 37 1 Install new gasket seating the gasket firmly in the groove at the top of the valve plate with your finger or blunt object CAUTION Make sure that the gasket is not twisted when seated in the groove of the top of the valve plate Exhaust Valve Flapper Valve Restraint and Valve Keeper Strip NOTE For this procedure refer to FIGURE 7 6 on page 37 1 Install the new exhaust valve flapper valve restraint and valve keeper strip to the top of the valve plate with the valve flapper screw NOTE Torque flapper screws to 12 inch lbs O ring Intake Valve Flapper and Valve Keeper Strip NOTE For this procedure refer to FIGURE 7 5 on page 37 1 Install the new valve keeper strip on t
48. he 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 Defective main valve coil a Replace main valve Internal Status Indicators b Replace main valve coil RED One Flash GREEN Five Reattach connector Flashes Defective P E valve coil Resistance Replace coil if shorted or open Or 80 ohm s 10 resistance check Refer to Replacing P E RED Two Flashes Valve on page 42 GREEN Three Flashes Defective P E valve Replace P E valve Refer to Replacing P E Control Panel Indicators Vike on 47 RED On p YELLOW Off GREEN Off Defective P C board Replace P C board Refer to Replacing Unit plugged in power switch P C Board on page 58 on continuous audible alarm Compressor shut down GREEN Off Perfecto 18 Part No 1148070 SECTION 4 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE Unit not operating Alarm P C board Failure On or Off Internal Status Indicators RED Two Flashes GRE
49. ifold assembly up and out of the base of the concentrator Disconnect spade connectors located on the side of the 4 way valve assembly Not shown 12 Remove the four mounting screws that secure the 4 way valve manifold assembly together Detail A 13 Replace the necessary component s i e 4 way valve manifold or both 14 Loosely install mounting screws through 4 way valve and into manifold assembly NOTE Ensure the manifold gasket is in place on 4 way valve before installing Part No 1148070 65 Perfecto SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY CAUTION Torque sequence and specification MUST be adhered to or possible damage to the 4 way valve could result Tighten mounting screws in the sequence described below Detail B Pre torque the mounting screws to 10 2 inch lbs using the torque sequence The mounting screws can be now be torqued to 22 2 inch Ibs in the same sequence Connect spade connectors located on the side of the 4 way valve assembly Position the 4 way valve manifold assembly in the base of the concentrator on the foam block in the orientation noted in STEP 9 Slide the vinyl tubes onto each side of the manifold valve assembly Using a hose clamp tool secure the vinyl tubes to the 4 way valve manifold assembly with the clamps Install the F tube into the 4 way valve manifold assembly Secure the F tube to the 4 way valve manifold assembl
50. ing on environmental conditions NOTE Environmental conditions that may require more frequent cleaning of the filters include but are not limited to high dust air pollutants etc 2 Clean the cabinet filter with a vacuum cleaner or wash in warm soapy water and rinse thoroughly 3 Dry the filter thoroughly before reinstallation CAUTION DO NOT operate the concentrator without the filter installed FIGURE 6 1 Cleaning the Cabinet Filter Perfecto 24 Part No 1148070 SECTION 6 PREVENTIVE MAINTENANCE Replacing the Outlet HEPA Filter Check the Outlet HEPA Filter NOTE The outlet HEPA filter can be checked by performing the following procedure 1 2 Turn the concentrator and adjust the flowmeter to the maximum flow of the unit Observe the flowmeter s flow indicator while connecting a fifty foot cannula tube to the outlet barb of the concentrator not shown If the flow indicator fluctuates the outlet HEPA filter may need replacement Refer to Troubleshooting on page 16 Replace the Outlet HEPA Filter NOTE For this procedure refer to FIGURE 6 2 NOTE Perform this procedure as needed depending on the outlet HEPA filter check results 1 2 3 Unplug the unit Remove the cabinet Refer to Removing Cabinet on page 23 For easier access to the outlet hepa filter remove the compressor inlet hepa filter by grasping the compressor inlet filter pull outward and up until filter is dislodged from rub
51. large leak is present on the valve that causes an imbalance in the sieve bed swing pressures Example Sieve Bed 1 pressure swings from 14 psi to 16 psi within 7 20 seconds and Sieve Bed 2 pressure swings from 13 psi to 16 psi slowly and may take as long as 25 30 seconds before shifting times over 30 second will shut down automatically 3 Valve will not shift and the pilot valve solenoid and circuit board are working properly NOTE The concentrator s P C B should exhibit an error code for High Pressure Failure 1 Red 2 Green NOTE The best method to test the 4 way valve operation is by measuring the unit pressure swings This can easily be done at the HomeFill port with a 0 30 psi pressure gauge and a 14 fill line adapter Upon starting the unit should build pressure up to 16 psi for output flows 3 L min and below or 21 psi for output flows 4 L min and above before its initial shift After the initial shift the unit should shift consistently in equal amounts of time 1 second time recorded in seconds Perfecto 78 Part No 1148070 SECTION 23 LEAK TEST 4 JE A N K 4i ATIR S S 69 lt N 4 Check each end cap for cracks and for major leaks You should NOT use leak detector on the valve 4 Way Valve Use a 0 30 psi pressure gauge to monitor system pressure swings and also record the amount of time it takes to achieve a shift full charge and full pu
52. ly NOTE For this procedure refer to FIGURE 6 4 on page 27 and FIGURE 6 5 on page 28 NOTE The following should be performed at 20 000 hour intervals although these procedures can be performed as needed depending upon the environment the concentrator is exposed to 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 3 Cut tie wrap that secures the bottom of the manifold exhaust tube to the F tube Perfecto i 26 Part No 1148070 SECTION 6 PREVENTIVE MAINTENANCE 4 Remove the bottom of the manifold exhaust tube from the F tube 5 Disconnect and remove the top of the manifold exhaust tube from the grommet Top of Manifold Exhaust Tube e Tie Wra Rubber Grommet Bottom of Manifold Exhaust Tube F Tube FIGURE 6 4 Replacing the Muffler Assembly 6 Push the muffler assembly down through the opening in the sound box 7 Cutthe two tie wraps around the muffler assembly 8 Separate the muffler assembly Detail A in FIGURE 6 5 9 Inspect the components to ensure they are clear 10 Do one of the following Replace exhaust canister and throttling muffler if plugged or restricted Install only new throttling muffler if exhaust canister is in good condition 11 Install new existing muffler assembly by reversing 2 10 Part No 1148070 27 Perfecto SECTION 6 PREVENTIVE MAINTENANCE 12 Reinstall
53. moving Cabinet on page 23 Plug the unit in and turn the power on 0 Locate the P C board Wait for the main valve shift to indicate one of the following If the board is new the front panel RED indicator light will slowly blink indicating autotune has initiated I If the board is used and has performed autotuning before press and release the small push button on the P C board The front panel RED indicator light will slowly blink indicating the unit is autotuning and automatically adjusting the P E valve timing 6 Set the output flow to 5 0 L min 7 The GREEN onboard diagnostic light will flash the current value of the P E valve timing number 8 Place the cover back on the unit but DO NOT install the cover screws Let the unit run until autotuning is completed 9 When autotuning is complete the RED front panel indicator light will change from a slow blinking to a flashing of the final P E valve timing number Part No 1148070 73 Perfecto SECTION 22 TIMING 10 Turn the unit off and then back on The timing value is stored in memory for future use 11 If the unit is turned off before an autotune cycle is completed the P E valve timing will not be stored or updated If the board is new autotuning MUST be successfully completed before the unit can be placed into service 12 After a successful autotune run the unit for 30 minutes and verify that the oxygen concentration output
54. mpressor on page 34 Replace compressor Replace fittings or tubing Replace relief valve DO NOT use extension cords Replace or retighten 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 uode Exhaust muffler dirty or plugged Replace Refer to Replacing the Muffler Fan a Not operating Unit overheating b Faulty fan Sieve beds defective a Leads to fan disconnected Reconnect b Replace Refer to Replacing Cooling Fan on page 55 Replace Refer to Checking Sieve Bed Pressure on page 86 Tubing kinked or blocked Repair or replace Part No 1148070 Perfecto SECTION 4 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTION Low Concentration P C board Check pressure at product tank Pressure Continued a Shifts at wrong pressures 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 a Return flow to maximum setting maximum flow rate b Cracked or broken fitting b Replace fitting c Input tubing leaking or loose c Repair or replace Refer to Replacing Flowmeter on page 63 To accommodate for varying tolerances when replacing components an adjustable timer is used to control the shifting of the Pressure Equalization P E valve
55. n unit so the back faces you N It may be necessary to remove compressor inlet HEPA filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 Check Valve Cut PVC Tubing below Check Valve to install Tap in Kit Tank FIGURE 25 1 Disassembly Pressure Testing NOTE For this procedure refer to FIGURE 25 2 on page 87 1 Connect pressure gauge to the x 2 inch silicone tubing with connector p n 1131392 2 Remove plug in HomeFill port in back of concentrator 3 Connect x 2 inch silicone tubing with connector to HomeFill port Perfecto 86 Part No 1148070 SECTION 25 SIEVE BED PRESSURE CHECK 4 Check each connection to make sure it is tight 5 Turn the concentrator On 1 NOTE Adjust the concentrator to MAXIMUM rated liter flow to 5 L min NOTE Wait approximately five minutes to allow system pressures to achieve proper equilibrium before testing 6 The pressure in the concentrator should rise within 20 seconds to 21 p s i g 0 3 and shift the 4 way valve to the opposite sieve bed 7 After the 4 way valve shift the pressure in the concentrator will drop to 12 p s i g 2 before rising within 20 seconds to 21 p s i g 0 3 and shift the 4 way valve to the opposite sieve bed 8 If pressure reading is 21 p s i g 0 3 when both valve shifts are made proceed to STEP 10 9 If pressure in the concentrator does not fall into the specifications listed above refer to Trou
56. nt Input Sound Level Altitude Oxygen Output Concentration Levels Maximum Outlet Pressure Flow Range Low Flow Alarm Average Power Consumption Pressure Relief Mechanism Operational at Change in maximum recommended flow when back pressure of 7kPa is applied Filters Safety System Width Height Depth Weight Shipping Weight Operating Ambient Temperature Exhaust Oxygen Output Cabinet Regulatory Listing Perfecto 120 VAC 10 132 108 VAC 60 Hz Perfecto 5 3 Perfecto 5 44 2 dBA Average Perfecto 5 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 All IRCS5PO2 IRC5P models 95 6 to 87 at 0 5 to 5 L min Perfecto 5 5 psi 0 5 psi 34 5 kPa 3 45 kPa Perfecto 5 0 5 to 5 L min For flowrates less than L min we recommend the use of the Invacare Pediatric Flowmeter 6 Accessory Perfecto 5 0 L min to 0 5 L min Rapid Audible Alarm Beeping No Accessories Connected Perfecto 5 280 W Operating 3 L min 35 psi 3 5 psi 241 kPa 24 1 kPa 0 7 L min Cabinet Outlet HEPA and Compressor Inlet 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 Sens
57. ntrator 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 Part No 1148070 13 Perfecto SECTION 2 INSTALLATION SEQUENCE OF OPERATION 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 and wait for 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 Perfecto 14 Part No 1148070 SECTION 3 PNEUMATIC DIAGRAM SECTION 3 PNEUMATIC DIAGRAM Perfecto2 Oxygen Concentrator Ouput Output HEPA Filter Check Flowmeter Valve Patient 9 Output Oxygen Sensor Pressure SensO models Only Regulator e Product Pressure Sensor Tank i
58. ome 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 Reattach cord Replace power cord connectors on plug Reattach connector 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 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 Part No 1148070 SECTION 4 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTION board a P C board damaged Power Loss Continued Internal Status Indicators RED Off GREEN Off Unit plugged in power switch alarm off Battery Free circuit drained b Loose or damaged connector Internal Power Loss Senso Transformer assembly a Faulty Internal Status Indicators RED Off GREEN Off Alarm may or may not be on Control Panel Indicators RED
59. op of the new intake valve flapper so that the word UP is visible Fasten with the valve flapper screw 2 Install the new O ring seating it firmly into the groove with your finger or blunt object NOTE Torque flapper screws to 12 inch lbs Piston Cup NOTE For this procedure refer to FIGURE 7 4 on page 36 1 Place cylinder sleeve over rod top with smooth edge facing up 2 Place piston cup on rod top making sure it is centered 3 Place retainer on top of piston cup and seat retainer in rod top pocket making sure the retainer and cup align properly along with screw holes gt Insert new screw into rod top and torque to 30 inch lbs Connecting Rod Eccentric Assembly NOTE For this procedure refer to FIGURE 7 4 on page 36 1 With gloved hand or clean cloth pre form piston cup if necessary 2 Gently slide cylinder sleeve up and over cup to fully form it Perfecto 38 Part No 1148070 SECTION 7 COMPRESSOR CAUTION DO NOT lubricate or use oil on any moving parts The compressor eccentric uses a precision sealed bearing DO NOT crimp the piston cup when you replace the sleeve If the cup is crimped it MUST be replaced 3 With bearing side of connecting rod eccentric assembly facing the center motor of the compressor slide the assembly onto the shaft bringing it flush to the motor bearing NOTE Make sure the eccentric set screw is positioned over the flat of the shaft 4 Using the access hole ti
60. page 3l Incorrect style of inlet filter Replace with factory OEM sound aftermarket reduced style inlet HEPA filter Perfecto 20 Part No 1148070 SECTION 4 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTION Unit Overheats Base exhaust vent plugged or restricted Place unit at least 3 inches from any wall DO NOT place unit on pile or shag car peting that may restrict air flow Cabinet filters dirty or blocked Clean or replace Refer to Cleaning the Cabinet Filter on page 24 Fan a Leads to fan disconnected b Defective fan c Fan installed upside down Heat exchanger a Dirty or plugged b Damaged Compressor a Defective Faulty capacitor Bad motor windings Worn seals Bad bearings Line voltage excessive surge Oxygen Purity P C board defective Good Internal Status Indicators Control Panel Indicators RED Off YELLOW On GREEN On After 30 minutes of run time unit operates normally oxygen purity within normal range GREEN or YELLOW panel indicator should illuminate Unit Not Operating Internal Status Indicators RED Off GREEN Off Control Panel Indicators RED Off YELLOW Off GREEN Off Power Switch ON Continuous audible alarm Transformer assembly a Assembly connector disconnected Part No 1148070 21 b Faulty transformer assembly Reconnect leads Replace fan Refer to Rebuilding the Thomas Model 2660 Compressor on
61. r Inlet HEPA Filter on page 26 NOTE Retiming of the concentrator is necessary Refer to Timing on page 73 NOTE To ensure proper orientation the out port barb should face to the left side sieve bed when viewing from behind the unit 9 Rununit and check for leaks Refer to Leak Test on page 76 10 Reinstall cabinet Refer to Removing Cabinet on page 23 Perfecto 42 Part No 1148070 SECTION 8 P E VALVE Sieve Bed gt Valve Terminals Spade Connectors Attach Here are not shown E Valve Tubing Tie Wrap P E Valve Assembly ad e 4 2 lt Tie Wrap P E Valve Tubing 4 pA Replacing P E Valve FIGURE 8 1 Perfecto 43 Part No 1148070 SECTION 9 SIEVE BEDS SECTION 9 SIEVE BEDS Replacing Sieve Beds A DANGER To prevent electrical shock AWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 9 1 on page 45 NOTE ALWAYS replace sieve beds in pairs to ensure that both beds are in optimum condition 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 3 Remove compressor inlet HEPA filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 B Remove tie wraps and disconnect P E valve tubing and check valve tubing from top of sieve beds 5 Remove
62. rge FIGURE 23 2 4 Way Valve Function Test Part No 1148070 79 Perfecto SECTION 24 ALARM TEST SECTION 24 ALARM TEST Alarm and Sensor Tests A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing Check alarms periodically for proper function Power Loss Alarm With the unit running remove the line cord from power source The power loss alarm mode should sound the audible alarm IMMEDIATELY or within 30 seconds NOTE With the unit unplugged and inoperable for a short period of time the battery free circuit will be drained If power failure alarm does not sound with unit unplugged and power switch on the battery free circuit is drained It will recharge when unit is plugged in and switched on Low Pressure Test NOTE For this procedure refer to FIGURE 24 1 on page 81 1 There are two separate failure modes for Low Pressure Low product tank pressure Pressure in tank drops below a preset value typically 7 54 e Failure to reach the set point pressure within a prescribed time limit or Timeout Failure Test One 1 With unit running set flow at maximum rating 2 When the main valve switches pull the stem on the compressor relief valve out as far as it will go and hold it 3 The low pressure alarm should activate within 30 seconds Refer to SensO Alarm Threshold on page 83 for shutdown mode Test Two 1 With unit running se
63. rings are removed NOTE Clean mounting surface of product tank cap Ensure that the two O rings for the NEW regulator are installed onto the ports underside of the NEW regulator before installation A WARNING Ensure proper installation of regulator Note flow arrow on regulator This MUST face toward the regulator outlet tubing or flow will be interrupted causing system shutdown 5 Install new regulator onto product tank by reversing STEPS 3 and 4 6 Torque mounting screws to 5 1 inch lbs NOTE On units with SensO reinstall 1 8 inch tubing to oxygen sensor housing 7 Adjust regulator pressure if necessary Refer to Adjusting Regulator on page 49 8 Run unit and check for leaks Refer to Leak Test on page 76 9 Reinstall cabinet Refer to Removing Cabinet on page 23 Perfecto 48 Part No 1148070 SECTION REGULATOR Pressure Regulator Pressure Top Adjustment Screw 5 32 inch Allen Pressure Wrench Regulator Jess Mounting lt Screws Pressure Product Sensor Tubing Tank Location of Product Tank NOTE For adjusting the regulator there is no need to remove the control panel FIGURE 11 1 Replacing Regulator Adjusting Regulator NOTE For this procedure refer to FIGURE 11 1 on page 49 1 Turn unit on 1 2 Install pressure gauge onto oxygen outlet NOTE Use a 0 30 p s i pressure gauge NOTE Check pressure at oxygen outlet It should read a stea
64. s at a time Shorter periods of operation may reduce maximum product life If the concentrator has a damaged cord or plug if itis 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 Perfecto 10 Part No 1148070 SECTION IMPORTANT SAFEGUARDS 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
65. s from the top of the capacitor Detail B Disconnect brass nut from compressor Detail B 3G poo S Obs du P On the backside of the Perfecto2 loosen the clamp that secures the vinyl tube to the manifold assembly and remove the vinyl tube from the manifold assembly Detail as Wi 10 On the front side of the Perfecto2 pull heat exchanger with vinyl tube out of base assembly Detail D 11 Remove the four mounting screws that secure the compressor to the base assembly Detail D 12 Tilt compressor assembly forward and lift out 13 Reverse STEPS 3 12 to install new compressor assembly 14 Secure compressor to base assembly with four screws and springs Torque screws to 30 5 in Ibs 15 Reinstall the cabinet Refer to Removing Cabinet on page 23 16 Run unit and inspect for leaks Refer to Leak Test on page 76 Part No 1148070 3l Perfecto SECTION 7 COMPRESSOR DETAIL A DETAIL B Brass Nut Capacitor Wires attach here DETAIL D Mounting Screws TAG lt E Mounting P Screws ccm A d 4 3 Grommets Laas 8 a TTE p JP kc Vinyl QR 4 Tube Clamp Y T Manifold Assembly FIGURE 7 1 Replacing Compressor Assembly 32 Part No 1148070 Perfecto SECTION 7 COMPRESSOR Replacing Capacitor NOTE For this procedure refer to FIGURE 7 2 on p
66. sition of the plates before Valve removing Plate 2 Lift off the valve plate on one side 3 Repeat for the other side NOTE Note the position of the tab on valve plate for reassembly NOTE To avoid confusion ONLY service one end of the compressor at a time FIGURE 7 3 Removing Compressor and Compressor Heads Rebuilding the Compressor Compressor Compressor Head Plate Valve Plates Part No 1148070 35 Perfecto SECTION 7 COMPRESSOR Fan NOTE For this procedure refer to FIGURE 7 4 1 Using two flat blade screwdrivers pry the fan off of the motor shaft under the center housing DO NOT pry under the fan blades NOTE Note position orientation of fan for reassembly Connecting Rod and Eccentric Assembly NOTE For this procedure refer to FIGURE 7 4 1 Rotate shaft to align the eccentric s set screw with the access hole in the bottom of the compressor housing 2 Insert the 1 8 inch Allen wrench into the access hole in the bottom of the compressor housing Detail A of FIGURE 7 4 3 Loosen the set screw 74 turn 4 Rotate connecting rod to top dead center 180 and slide the connecting rod eccentric assembly off the shaft through the opening in the housing 5 Secure the rod assembly in a fixture 6 Remove the sleeve from the connecting rod and discard Piston Cup NOTE For this procedure refer to FIGURE 7 4 1 Remove the torque screw discard from the piston cup retainer retain for re
67. t A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 5 1 1 Unplug unit 2 Remove the four mounting screws that secure cabinet assembly to the base assembly 3 Liftthe cabinet straight up NOTE When required vacuum inside of the cabinet and exposed foam insulation 4 Tore install cabinet reverse STEPS 2 3 Cabinet Assembly Mounting p TUNE aa Screws Base Assembly FIGURE 5 1 Removing Cabinet Part No 1148070 23 Perfecto SECTION 6 PREVENTIVE MAINTENANCE SECTION 6 PREVENTIVE MAINTENANCE A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE The Perfecto Concentrators are specifically designed to minimize routine preventive maintenance at intervals of once per year In places with high dust or soot levels maintenance may need to be performed more often The following MUST be performed at a minimum of one year in service to assure years of additional reliability Refer to Troubleshooting on page 16 for plugged filter symptoms Power should be disconnected before beginning preventive maintenance on the Invacare concentrator Cleaning the Cabinet Filter NOTE For this procedure refer to FIGURE 6 1 NOTE There is one cabinet filter located on the back of the cabinet 1 Remove the filter and clean at least once a week depend
68. t No 1148070 Part 1148070 SECTION 24 ALARM TEST OXYGEN CONCENTRATOR Refer To Service Manual DIAGNOSTIC ALARM SYSTEM ADJUSTMENTS BY UNAUTHORIZED PERSONNEL VOIDS WARRANTY LED FLASHES ALARM RED GREEN PROBABLE CAUSE BEEP AT START UP 0 0 NO PROBLEM SYSTEM OK SHORT BEEP WITH LONG PAUSE 0 0 MAIN POWER LOSS CONTINUOUS 1 1 LOW PRESSURE MAJOR LEAK CONTINUOUS 1 2 HIGH PRESSURE NO SWITCHING CONTINUOUS 1 3 TIME OUT FAILURE COMPRESSOR CONTINUOUS 1 5 PILOT VALVE CIRCUIT CONTINUOUS 2 1 73 SHUTDOWN LOW Oo CONTINUOUS 2 3 PE VALVE COIL CONTINUOUS 2 4 EEPROM FAILURE CONTINUOUS 3 1 OXYGEN SENSOR FAILURE NOTE CYCLE POWER ON AND OFF FIVE 5 TIMES TO CLEAR INTERNAL FAULT CODE Cabinet Filter s Clean Weekly Replace as Needed PREVENTIVE Heat Exchanger Clean as Needed MAINTENANCE Compressor Inlet Filter Check Annually or During Scheduled PM SCHEDULE Outlet HEPA Filter Check Annually or During Scheduled PM Compressor Rebuild as Needed 1115180 Exhaust Muffler Replace as Needed 85 Perfecto SECTION 25 SIEVE BED PRESSURE CHECK SECTION 25 SIEVE BED PRESSURE CHECK Checking Sieve Bed Pressure A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing Disassembly NOTE For this procedure refer to FIGURE 25 1 1 Turn power off O and unplug unit Remove cabinet Refer to Removing Cabinet on page 23 Tur
69. t flow at maximum rating 2 Remove the pressure sensor tubing tie wrap from the top of the product tank not shown po The low pressure alarm should activate within 30 seconds Refer to SensO Alarm Threshold on page 83 for shutdown mode Perfecto 80 Part No 1148070 SECTION 24 ALARM TEST 4 Replace tubing and tie wrap Time Out Test NOTE For this procedure refer to FIGURE 24 1 1 With unit off disconnect the compressor connector from the main wiring harness 2 Plug unit in and turn power on 1 3 The Time Out Failure alarm should activate within 40 seconds Refer to SensOy Alarm Threshold on page 83 for shutdown mode 4 Replace tubing and tie wrap NOTE If any alarm fails to perform to specification contact Invacare Technical Service Relief Valve Pull Out m Stem to Simulate Leak Compressor FIGURE 24 1 Low Pressure Test Time Out Test High Pressure Test NOTE For this procedure refer to FIGURE 24 2 on page 82 High Pressure Occurs when pressure in product tank rises beyond a preset value typically 23 p s i 1 p s i for 5 liter and 27 p s i 1 p s i for 10 liter Main Valve Coil Alarm sequence occurs when the main valve coil connection or board circuitry has failed 1 With the unit running and flow set at 5 L min disconnect in line connector shown in FIGURE 24 2 2 The main valve coil alarm should activate within 40 seconds Refer
70. t valve stem clockwise until snug Torque to 25 inch lbs 5 inch lbs 15 Install new label onto pilot valve coil yoke 16 Position pilot valve coil with yoke at an approximate 90 angle to the right as viewed from the front of valve 17 Use the flat blade screwdriver and hold the pilot valve stem in place 18 Tighten locknut clockwise with the 9 16 inch wrench until snug to secure the stem and coil with yoke DO NOT overtighten Torque to 20 inch lbs 3 inch lbs CAUTION DO NOT overtighten locknut when installing it onto pilot valve stem Damage to the plastic manifold may occur 19 Plug power cord in and turn concentrator ON I to ensure proper operation 20 Reinstall cabinet Refer to Removing Cabinet on page 23 21 If any difficulties are encountered in this installation contact Invacare Technical Service at 800 832 4707 Part No 1148070 69 Perfecto SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY DETAIL A ss Manifold D F Opening O Ring Air Flow Passage Assembled View Exploded View NOTE DO NOT disassemble Spade Connectors attach here Leave Wire Connectors Intact Locknut Valve Pilot Valve Stem Coil Slotted Pilot Valve Poppet Stem Valve Tapered FIGURE 20 2 Replacing Pilot Valve Poppets and O Rings Perfecto 70 Part No 1148070 SECTION 21 PURITY INDICATORS SECTION 21 PURITY INDICATORS SensO Alarm Indicators A DANGER
71. tall new control panel by reversing STEPS 3 12 Part No 1148070 53 Perfecto SECTION 13 PANEL 15 Run unit and check for leaks at pressure sensor tubing on product tank cap Refer to Leak Test on page 76 16 Reinstall cabinet Refer to Removing Cabinet on page 23 DETAIL A DETAIL Mounting Screws Control Wrap SIEP 5 gt 1 4 Tubing STEP 6 Control Panel Tubing STEP 7 Circuit Breaker STEP 9 Hour Meter On Off Switch STEP 9 STEP 9 P C Board Mounting Screws FIGURE 13 1 Removing Control Panel Perfecto 54 Part No 1148070 SECTION 4 COOLING FAN SECTION 14 COOLING FAN Replacing Cooling Fan A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 14 1 on page 57 1 Unplug unit 2 Remove cabinet Refer to Cabinet on page 23 3 Remove control panel Refer to Removing Control Panel on page 53 4 Remove compressor inlet HEPA filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 5 Remove the three mounting screws that secure the resonator housing to the soundbox Two mounting screws are installed in the top The other mounting screw is located on the backside of the housing near the bottom Detail A 6 Move the resonator housing back slightly for access to the cooling fan Disconnect the intake
72. the four large tie wraps two on each sieve bed 6 Tilt sieve beds back and lift up Rest sieve beds on rear of base N Using a hose clamp tool remove the clamp and reinforced tubing from bottom of both sieve beds and remove sieve beds CAUTION DO NOT remove plastic caps from new sieve bed fittings until ready to install new beds Severe sieve contamination can occur if uncapped beds are exposed to air 8 Remove plastic caps from the top and bottom fittings of the new sieve beds 9 Install new sieve beds reversing STEPS 3 7 NOTE After replacing sieve beds retiming is necessary Refer to Timing on page 73 10 Run unit and check for leaks Refer to Leak Test on page 76 11 Reinstall cabinet Refer to Removing Cabinet on page 23 Perfecto 44 Part No 1148070 SECTION 9 SIEVE BEDS P E Valve Check Valve Tubing Assembly _ Check Valve Tubing Tie Wraps Tie Wraps Tie Wrap P E Valve Tubing P E Valve ubing Tie Wraps Tie Wrap Clamp Sieve Bed Reinforced Tubing attaches HERE not shown NOTE Compressor Inlet HEPA Filter removed from illustration for clarity FIGURE 9 1 Replacing Sieve Beds Part No 1148070 45 Perfecto SECTION 10 VALVES SECTION 10 VALVES Replacing Check Valves A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this
73. this procedure refer to FIGURE 12 1 on page 52 NOTE The heat exchanger assembly contains three components heat exchanger nine inch vinyl tube and connecting component 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 CAUTION Use care not to deform heat exchanger when installing removing or cleaning Disconnect brass nut that secures the heat exchanger assembly to the compressor Detail A On the backside of the Perfecto2 loosen the clamp that secures the vinyl tube to the manifold assembly and remove the vinyl tube from the manifold assembly Detail Remove heat exchanger assembly by pulling vinyl tube through sound box gt Reverse STEPS 3 5 to install new heat exchanger Run unit and check for leaks Refer to Leak Test on page 76 ND Reinstall cabinet Refer to Removing Cabinet on page 23 Part No 1148070 5 Perfecto SECTION 12 EXCHANGER ASSEMBLY DETAIL Heat Exchanger Assembly Brass Nut DETAIL B Z 7 yr 2 YN mi m N 4 Vinyl ON M Tube S 2 lt Manifold Assembly Sound Box FIGURE 12 1 Replacing Heat Exchanger Assembly Perfecto 52 Part No 1148070 SECTION 13 PANEL SECTION 13 CONTROL PANEL Removing Control Panel A DANGER To prevent electrical shock ALWAYS disconnect concentrator
74. ting On Off switch ph F N Compress retaining grips on back of existing On Off switch and push switch out through front of control panel NOTE Ensure proper orientation of the On Off switch and wiring connections before installation Refer to FIGURE 17 1 Detail A and Detail B below CAUTION DO NOT install the On Off I O switch upside down Universal Off O symbol should be at bottom and Universal On 1 symbol should be at the top Possible damage to the concentrator may result if not properly installed 6 Reverse STEP 4 to secure new On Off VO switch 7 Reinstall control panel Refer to Removing Control Panel on page 53 8 Reinstall cabinet Refer to Removing Cabinet on page 23 DETAIL A ON Front View On Off OFF VO Switch DETAIL B Spade Connector On Off from Brown Wire Switch attached here Brown Jumper N 7 illi Wire From Spade Connectors from White Wires attached here FIGURE 17 1 Replacing On Off Switch Perfecto 62 Part No 1148070 SECTION 18 FLOWMETER SECTION 18 FLOWMETER Replacing Flowmeter A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 18 1 on page 63 1 Unplug unit 2 Remove cabinet Refer to Removing Cabinet on page 23 9 Note the location of the PVC tubing for accurate replacement after new
75. u turn the fan DO NOT connect the unit to a power source Review the assembly procedure for possible error NOTE For this procedure refer to FIGURE 7 7 on page 41 1 Reinstall compressor Refer to Replacing Compressor Assembly on page 31 2 Run unit and check for leaks around compressor hoses and compressor tubes Refer to Leak Test on page 76 3 Take pressure readings to ensure proper system pressures Refer to Checking Sieve Bed Pressure on page 86 FIELD SERVICE PARTS LIST FOR THOMAS 2660 SERIES COMPRESSOR ITEM PART QTY QTY NO NO PER ASM PER UNIT DESCRIPTION See Chart 2 Connecting Rod Eccentric amp Bearing Assembly 2 624277 2 Piston Cup 3 625776 2 Screw Piston Cup Retainer 4 626175 2 Piston Cup Retainer 5 618114 2 Cylinder Sleeve 6 See Chart Head 7 623143 2 O Ring Head Gasket 8 625175 8 Screw Head 9 621591 2 Valve Plate Assembly 638574 Valve Pressure Relief Not Shown 115 V 10 617177 2 Valve Restraint 617562 2 4 Valve Keeper Strip 12 621485 2 4 Valve Flapper Intake amp Exhaust 13 621641 2 Valve Plate 14 625094 2 4 Screw Valve Flapper 15 623137 2 O Ring Valve Plate 16 63828 Fan Gray 17 638282 Fan Black 2660CE37 989 COMPRESSOR ITEM NO QTY DESCRIPTION 607731 2 Connecting Rod Eccentric amp Bearing Assembly 6 665167 Head
76. ure the Sensor LX Models Indicator Light Explanation RED light Total Unit Shut Down Switch IMMEDIATELY to a back up oxygen supply Call Supplier IMMEDIATELY GREEN light VO On Off System okay Part No 1148070 71 Perfecto SECTION 21 PURITY INDICATORS Model IRC5P02 Model IRC5P Sens Auto Shut Down A Below Normal Normal d FIGURE 21 1 Display Control Panel Perfecto 72 Part No 1148070 SECTION 22 TIMING SECTION 22 TIMING A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing Use extreme care when making adjustments to the timing switch DO NOT allow screwdriver or your hands to contact the P C Board when unit is plugged in and or on Turn unit off and unplug before adjusting timing switch Electrical shock is possible To accommodate the varying tolerances when replacing components an adjustable timer is used to control the shift time of the pressure equalization P E valve The SensO board allows for automatic microprocessor controlled adjustments of the P E shift times Non SensO boards allow for manual adjustment Autotuning A WARNING DO NOT push the autotune button while powering up Otherwise the factory settings will be erased NOTE For this procedure refer to FIGURE 22 1 on page 74 1 Turn power off and unplug the unit Remove cabinet Refer to Re
77. ws Two in the top and one on the back near the bottom of the housing Detail A if necessary reconnect the intake valve on the compressor assembly Reinstall control panel Refer to Removing Control Panel on page 53 Reinstall compressor inlet HEPA filter Refer to Replacing the Compressor Inlet HEPA Filter on page 26 Plug unit in and check for leaks Refer to Leak Test on page 76 Run unit for at least 30 minutes If unit runs properly replace cover If not call Invacare Technical Service Reinstall cabinet Refer to Cabinet on page 23 Perfecto 56 Part No 1148070 SECTION 4 COOLING FAN DETAIL B DETAIL Rubber Grommet Cooling Fan Mounting IP Screws Mounting Screw Fan Terminals 1 baia Spade Connectors Resonator attach here Housing Assembly DETAIL D Cooling NOTE Sieve Beds are not shown for clarity DETAIL Cooling Fan Rubber Grommets Rubber Grommets Larger recessed area to be installed in fan NOTE Cooling fan removed from rubber grommets to show proper Smaller recessed area to be installation of grommets in installed in soundbox FIGURE 14 1 Replacing Cooling Fan Part No 1148070 57 Perfecto SECTION I5 P C BOARD SECTION 15 P C BOARD Replacing P C Board A DANGER To prevent electrical shock AL
78. y with two tie wraps Install the manifold exhaust tube into the F tube Secure the manifold exhaust tube to the F tube with a tie wrap Install cabinet Refer to Removing Cabinet on page 23 Perfecto 66 Part No 1148070 SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY Manifold Exhaust Tube 4 Way Valve Manifold Assembly Vinyl Tube DETAIL DETAIL B Manifold 4 Way Valvel Manifold Assembly Assembly 4 Way Valve 76 1 NOTE The Numbers above indicate the MOUNTING SCREW TORQUE SEQUENCE Mounting pre torque to 10 2 inch lbs Screws then torque to 22 2 inch lbs FIGURE 20 1 Replacing 4 Way Valve and or Manifold Assembly Part No 1148070 67 Perfecto SECTION 20 4 WAY VALVE MANIFOLD ASSEMBLY Replacing Pilot Valve Poppets and O Rings A DANGER To prevent electrical shock ALWAYS disconnect concentrator from electrical outlet before servicing NOTE For this procedure refer to FIGURE 20 2 on page 70 1 Unplug unit 2 Remove cabinet Refer to Cabinet on page 23 3 Remove the 4 way valve manifold assembly Refer to Replacing 4 Way Valve and or Manifold Assembly on page 65 4 Locate pilot valve on 4 way valve manifold assembly 5 Hold pilot valve stem with the flat blade screwdriver and turn the 9 16 inch locknut counterclockwise one complete turn 6

Invacare 90-2 Mobility Aid User Manual

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