SECTION 4—TROUBLESHOOTING
Perfecto
2
™
18
Part No 1154245
LOW PRESSURE:
Internal Status Indicators:
RED: One Flash
GREEN: One Flash
Or
RED: One Flash
GREEN: Three Flashes
Control Panel Indicators:
RED: On
YELLOW: Off
GREEN: Off
Unit plugged in, power switch
on, continuous audible alarm.
Compressor shut down
(Failure to cycle due to low
pressure).
Compressor inlet filter dirty or
plugged.
Replace compressor inlet filter. Refer to
Replacing the Compressor Inlet HEPA
Filter on page 26.
Compressor:
a. Leaks at fittings or tubing
b. Leaking or defective relief valve.
c. Insufficient voltage at outlet.
d. Worn cup seals or gaskets.
a. Replace or repair.
b. Repair leak or replace.
c. DO NOT use extension cords. Use
another outlet.
d. Rebuild top end of compressor. Refer
to Rebuilding the Thomas Model
2660 Compressor on page 34.
Heat exchanger:
a. Leak at tubing or body chamber.
b. Inspect tubing and heat
exchanger.
a. Replace or retighten.
b. Replace or retighten tubing. Replace
heat exchanger. Refer to Replacing
Heat Exchanger Assembly on
page 58.
Regulator cracked or leaking.
Replace regulator. Refer to Replacing
Regulator on page 55.
P.E. valve leaking.
Replace P.E. Valve. Check voltage at P.E.
valve connector on 24 volt D.C. scale. The
P.E. Valve activates or energizes
approximately one second prior to the
activation of the 4 way valve with
approximately 24 volts. If voltage is in
excess of 24 volts consistently, replace the
P.C. board. Refer to Replacing P.C. Board
on page 65. If the P.C. board voltage acts
normally, replace the P.E. valve. Refer to
Replacing P.E. Valve on page 49.
Note: Check for leaks starting at the
compressor output through all the
pneumatic connections. Major leaks will
cause system pressures to remain below
adequate shift (exhaust) pressures and will
cause compressor shutdown.
Defective Parts:
Internal Status Indicators:
RED: One Flash GREEN: Five
Flashes
Or
RED: Two Flashes
GREEN: Three Flashes
Control Panel Indicators:
RED: On
YELLOW: Off
GREEN: Off
Unit plugged in, power switch
on, continuous audible alarm.
Compressor shut down.
Defective main valve coil.
a. Replace main valve.
b. Replace main valve coil.
Connector loose.
Reattach connector.
Defective P.E. valve coil. (Resistance
80 ohms ± 10.)
Replace P.E. coil if shorted or open on
resistance check. Refer to Replacing P.E.
Valve on page 49.
Defective P.E. valve.
Replace P.E. valve. Refer to Replacing P.E.
Valve on page 49.
Connector loose.
Reattach connector.
Defective P.C. board.
Replace P.C. board. Refer to Replacing
P.C. Board on page 65.
SYMPTOM
PROBABLE CAUSE
SOLUTION
