Autotuning - Invacare Perfecto2 IRC5PO2AW Service Manual

Invacare® Perfecto₂™ Oxygen Concentrator

7 Autotuning

7.1 Autotuning
DANGER!
Risk of Death, Injury, or Damage
To prevent electrical shock
– ALWAYS disconnect concentrator from electrical outlet before servicing.
– Turn unit Off (O) and unplug before adjusting timing switch.
– 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 (I).
WARNING!
Risk of Injury or Damage
To avoid erasing the factory settings and misusing the concentrator
– DO NOT push the autotune button while powering up.
1. Turn power Off (O) and unplug the unit.
2. Remove cabinet. Refer to 6.1 Removing Cabinet, page 17.
3. Plug the unit in and turn the power On (I ).
Locate the P. C. board A.
4.
5. Set the output flow to 5.0 L/min +0.5 L/min -0.0 L/min.
6. Wait for the main valve shift to indicate one of the following:
•
If the P. C. board is new, the front panel RED indicator light will slowly blink, indicating autotune has initiated.
•
If the P. C. board is used and has performed autotuning before, press and release the small push button B 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.
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.
10. Turn the unit Off (O) and then back On (I). The timing value is stored in memory for future use.
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.
11. After a successful autotune, run the unit for 30 minutes and verify that the oxygen concentration output of the unit is within specification.
12. If the oxygen output concentration is not within specification, rerun the autotune again.
13. Reinstall cabinet. Refer to 6.1 Removing Cabinet, page 17 and reverse all steps.
40
B
A
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