Invacare Perfecto2IRC5PO2AW Service Manual page 18

SECTION 4—TROUBLESHOOTING
SYMPTOM
Unit not operating: Alarm:
On or Off
Internal Status Indicators:
RED: Two Flashes
GREEN: Four Flashes Or
RED: Two Flashes GREEN:
Five Flashes
Low Concentration: NOTE:
Check for O purity using a
2
calibrated Oxygen Analyzer
at Test Point 1 (oxygen
outlet) of the concentrator.
Internal Status Indicators:
RED: Two Flashes
GREEN: One Flash73%
Shutdown Control Panel
Indicators: SensO ONLY:
2
RED: On
YELLOW: Off
GREEN: Off
For SensO units, the RED
2
indicator will signal extremely
low purity and will be
accompanied by a continuous
audible alarm and a system
shutdown. Repairs are
required.
Perfecto ™
2
PROBABLE CAUSE
P.C. board Failure.
Cabinet filters dirty.
Compressor inlet filter dirty.
Compressor:
a. Defective.
b. Faulty capacitor.
c. Bad motor windings.
d. Worn seals.
e. Bad bearings.
f. Leak at fittings or tubing.
g. Leaky or defective relief valve.
h. Insufficient voltage (outlet).
Heat exchanger:
a. Leak at tubing or body chamber.
b. Inspect tubing and heat
exchanger.
Regulator cracked or leaking.
Exhaust muffler dirty or plugged.
Fan:
a. Not operating. Unit overheating.
b. Faulty fan.
Sieve beds defective.
Tubing kinked or blocked.
P.C. board:
a. Shifts at wrong pressures.
18
SOLUTION
Replace P.C. board.Refer to Replacing P.C.
Board on page 57.
Clean or replace. Refer to Cleaning the
Cabinet Filter on page 23, Replacing the
Outlet HEPA Filter on page 24, and
Replacing the Compressor Inlet HEPA
Filter on page 25.
Replace inlet filter. Refer to Replacing the
Compressor Inlet HEPA Filter on page 25.
a. Replace compressor. Refer to
Replacing Compressor Assembly on
page 30.
b. Replace capacitor. Refer to Replacing
Capacitor on page 32.
c. Replace compressor.
d. Rebuild top end of compressor. Refer
to Rebuilding the Thomas Model
2660 Compressor on page 33.
e. Replace compressor.
f. Replace fittings or tubing.
g. Replace relief valve.
h. DO NOT use extension cords.
a. Replace or retighten.
b. Replace or retighten tubing. Replace
heat exchanger. Refer to Replacing
Heat Exchanger Assembly on
page 50.
Replace. Refer to Replacing Regulator on
page 47.
Replace. Refer to Replacing the Muffler
Assembly on page 25.
a. Leads to fan disconnected.
Reconnect.
b. Replace.Refer to Replacing Cooling
Fan on page 54.
Replace. Refer to Checking Sieve Bed
Pressure on page 84.
Repair or replace.
Check pressure at product tank. Pressure
should rise to 144.79 kPa (21 p.s.i.) at shift
point. If not, replace P.C. Board. Refer to
Replacing P.C. Board on page 57.
Part No 1154245