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Asset Type
Manufacturer
Model
Models Covered
IRC5PO2AW (SensO2) and IRC5PAW (non-SensO2).
Manual Reference
Invacare Perfecto2 Service Manual, Part No. 1154245.
Manufacturer Recommendation / AEM Status
- Monthly: Inspect the cabinet filter and clean as needed; inspect more often in dusty conditions.
- Each inspection: Record date and hours, clean the cabinet filter, and check prescribed L/min flow.
- Annually, during scheduled PM, or between patients: Clean/replace the cabinet filter, check outlet HEPA and compressor inlet filters, check oxygen concentration on SensO2 models, and check the power-loss alarm.
- Every 180 days: Check oxygen concentration on non-SensO2 units.
- As required: Clean the heat exchanger, replace the exhaust muffler, and rebuild the compressor top end. Inspect/service the exhaust muffler at approximately 20,000 hours, subject to environment.
The reviewed manual requires PM at a minimum of one year in service and more often where excessive dust or soot is present. Verify the exact model, market, and current manual revision because later Perfecto2-family publications may differ. Changes to the applicable manufacturer schedule belong under the facility's approved AEM program.
What This PM Procedure Covers
- Identity, hours, variant, history, and environment
- Cabinet, filter, vents, flowmeter, outlet, power components, labels, and accessories
- Outlet HEPA and compressor inlet filter checks
- Startup, flow, low-flow indication, oxygen concentration, outlet pressure, and power-loss alarm
- SensO2 indication where fitted and configuration-appropriate electrical safety
Required Tools and Equipment
- Current Invacare manuals for the exact model and region
- Calibrated oxygen analyzer
- Calibrated flow analyzer suitable for 0.5-5 L/min
- Calibrated 0-30 psi pressure gauge and suitable oxygen-outlet connection
- Specified 50-foot cannula/tubing for the outlet HEPA check
- Timer for the approximately 30-minute warm-up
- Vacuum or clean, dry compressed air; mild soap, warm water, lint-free cloths, and PPE
- Correct filters, authorized service tools, and electrical safety analyzer when required
Step-by-Step PM Procedure
1. Verify Identification and Configuration
Action: Record asset tag, serial, exact model, rating, hours, SensO2/non-SensO2 configuration, accessories, location, and applicable manual revision.
Expected outcome: The CMMS identity, interval, and acceptance criteria are correct.
2. Review History and Environment
Action: Review complaints, alarms, oxygen trends, flow/pressure problems, filters, compressor work, prior results, hours, and exposure to dust, soot, heat, or restricted ventilation.
Expected outcome: Adverse trends and need for corrective work or a shorter interval are identified.
3. Prepare Safely
Action: Provide alternate prescribed oxygen before removing an in-use unit. Switch off, unplug, remove patient accessories, and use a clean, ventilated area away from smoking, flame, sparks, oil, grease, and oxygen-enriched materials.
Expected outcome: Patient support is maintained and service hazards are controlled.
4. Inspect the Exterior
Action: Inspect cabinet, handle, feet/casters, seams, fasteners, vents, exhaust, outlet, flowmeter/knob, hour meter, labels, switch, breaker, cord, plug, and strain relief for damage, contamination, blockage, looseness, heat, liquid, or modification.
Expected outcome: Enclosure, airflow, controls, power components, and markings are serviceable.
5. Clean Cabinet and Service Cabinet Filter
Action: Clean without spraying or saturating the unit. Vacuum the cabinet filter or wash in warm soapy water, rinse thoroughly, dry completely, and reinstall. Replace if damaged. Never operate without the filter or with it wet.
Expected outcome: Cabinet and vents are clean; filter is dry, intact, and correctly installed.
6. Check the Outlet HEPA Filter
Action: With the cabinet assembled, operate at maximum flow and attach the specified 50-foot cannula. If the flow indicator fluctuates, investigate and replace the outlet HEPA filter as needed by the qualified service procedure.
Expected outcome: Flow remains stable with no indication of outlet-filter restriction.
7. Check Compressor Inlet Filter and Due Internal Maintenance
Action: Qualified personnel only: unplug before cabinet removal. Inspect/replace the compressor inlet filter as needed. When due or indicated, clean the heat exchanger without deforming it, inspect/service the exhaust muffler, and evaluate the compressor top end. Inspect tubing, wiring, mounts, and connections. Restore the cabinet before power.
Expected outcome: Filters and cooling paths are serviceable and internal components are secure.
8. Verify Startup and General Operation
Action: Place the assembled unit at least 3 inches (7.6 cm) from obstructions. Connect directly to rated mains without an extension cord and switch on. Confirm normal compressor, flowmeter, and indicator operation with no abnormal noise, vibration, odor, or heat.
Expected outcome: The unit starts and operates normally with unobstructed ventilation.
9. Verify Flow
Action: Exercise the control and compare indicated flow with a calibrated analyzer at selected points. Record at least maximum flow. Do not set above 5 L/min.
Expected outcome: Flow adjusts smoothly and meets the approved criterion through 0.5-5 L/min.
10. Verify Low-Flow Indication
Action: With patient accessories removed, briefly reduce flow into the low-flow region by the applicable manual method. Confirm the rapid audible indication occurs within 0-0.5 L/min. Restore normal flow immediately.
Expected outcome: Low-flow warning activates in range and clears after flow is restored.
11. Verify Oxygen Concentration
Action: Calibrate the oxygen analyzer, operate at test flow under normal conditions, and allow approximately 30 minutes to stabilize. Record concentration and verify 87-95.6% oxygen at 0.5-5 L/min. Check IRC5PO2AW SensO2 models annually/at scheduled PM/between patients; check IRC5PAW non-SensO2 units every 180 days. For SensO2, confirm indication agrees with measurement: nominal green above 85% ±2%, yellow from 73% ±3% to 85% ±2%, and red below 73% ±3%. Do not deliberately degrade concentration during routine PM to simulate service-level alarms.
Expected outcome: Concentration meets specification and SensO2 indication, when fitted, agrees.
12. Verify Outlet Pressure
Action: Use the calibrated gauge and approved service-manual setup to measure and record maximum outlet pressure. Do not improvise an obstruction.
Expected outcome: Outlet pressure is 5.0 ±0.5 psi (34.5 ±3.45 kPa).
13. Verify Power-Loss Alarm
Action: With the unit operating, disconnect mains power. Confirm the audible alarm sounds immediately or within 30 seconds. Reconnect and restore operation.
Expected outcome: Mains loss produces the required audible warning.
14. Additional Alarm or Leak Tests When Required
Action: Low/high-pressure, timeout, oxygen-sensor, and pressure-equalization-valve tests deliberately simulate internal faults. Perform only when required and only by qualified personnel following the exact service manual. If pneumatic parts were disturbed, complete the manual leak test.
Expected outcome: Required functions pass and nothing remains disconnected or leaking.
15. Perform Electrical Safety Testing
Action: Verify exact rating-label construction. Inspect power components and perform facility-required testing for that configuration. Record protective-earth resistance only if a protective-earth conductor exists; otherwise mark N/A. Record touch/enclosure leakage and the facility limit.
Expected outcome: Visual and applicable electrical-safety tests pass.
16. Restore and Return to Service
Action: Restore filters, panels, fasteners, caps, accessories, and settings. Confirm stable 5 L/min operation, compliant concentration/pressure, normal indicators, no alarm, and no abnormal sound, vibration, odor, or heat. Document readings and parts.
Expected outcome: The unit is complete, within specification, and ready for service.
Electrical Safety Testing
The reviewed manual does not provide a universal routine leakage-current or protective-earth limit. Verify the exact rating label and apply the facility criterion for its construction. Document analyzer/standard, cord and controls, equipment construction, ground resistance or N/A, touch/enclosure leakage, facility limit, result, and pass/fail.
Pass / Fail Criteria
Pass
- Identity, SensO2 configuration, rating, hours, and manual are verified
- Cabinet, vents, outlet, flowmeter, controls, cord, plug, labels, and accessories pass
- Filters and cooling path are clean, dry, intact, and correctly installed
- Startup and operation are normal
- Flow passes through 0.5-5 L/min and low-flow warning activates within 0-0.5 L/min
- Oxygen concentration is 87-95.6% after approximately 30 minutes and SensO2 indication agrees when fitted
- Outlet pressure is 5.0 ±0.5 psi and power-loss alarm sounds within 30 seconds
- Required leak, electrical-safety, and qualified service checks pass
Remove From Service
- A safety-affecting enclosure, airflow, power, outlet, flowmeter, filter, tubing, wiring, or control defect exists
- A required filter is missing, wet, damaged, restricted, incorrect, or unserviceable
- Flow, concentration, pressure, low-flow warning, power-loss alarm, SensO2 indication, leak, or electrical safety fails
- Abnormal heat, odor, noise, vibration, contamination, liquid intrusion, or recurring alarm remains
- Required repair, compressor/sieve service, pressure adjustment, or calibration cannot be completed under an authorized procedure
Copy/Paste CMMS Work Order Procedure
Use the exact model's current manufacturer manual, facility policy, and approved AEM program to determine the final interval and return-to-service requirements.