Fault Handling; Possible Faults - Comprag ADX-F-PDP Serie Bedienungsanleitung

6. Fault handling

6.1 Possible faults

Fault Possible cause
There is no electrical voltage.
The air dryer
will not start.
Failure of electronic circuit board.
Failure of solenoid valve.
Purge air
Failure of electronic circuit board.
doesn't exit.
Injector / silencer blocked.
Air flows out
in very small Injector / silencer blocked.
amounts.
Check the functioning of the sole-
noid valves.
There is no
There is no electrical voltage.
change in the
tower cycles.
Failure of electronic circuit board.
Mechanical problem in the intake
valve.
The air feed is too high.
Low air pressure at inlet.
High temperature of air at inlet.
There is no change in the tower
Presence of
cycles.
condensate in
the pipeline. Insufficient supply of purge air.
Pressure in tower during regenera-
tion mode (maximum permissible
pressure, Pmax., is 0.05 MPa).
Service life of adsorbent.
20
Solution
The voltage of the power supply line, the state of
fuses and the main switch should be inspected.
Replace the electronic circuit board.
Check for signals being output to solenoid valves.
Replace, if necessary.
Replace the electronic circuit board.
Remove injector / silencer.
Purge with compressed air. Replace, if necessary.
Remove injector / silencer. Clean away dirt / oil
/ dust.
Check for signals being output to solenoid valves.
Replace, if necessary.
The voltage of the power supply line, the state of
fuses and the main switch should be inspected.
Replace the electronic circuit board.
Remove the intake valve and check the free play
of the bypass washer.
Check that the operating conditions conform
with requirements of the technical documenta-
tion.
Look at all aforementioned means of handling
faults.
Adsorbent replacement.
Version 1.0