Lenhardt & Wagner LW 150 ES, Operating Instructions Manual

Page: 37 / 187

LW 150 ES / LW 200 ES
Version: 31.01.22-001 E Page A - 35
A
R E M E D Y I N G F A U L T S
Automatic condensate drain defective
Cause of fault Remedy
Solenoid coils defective Replace
Cable / supply cable defective Repair, replace if necessary
Timer / relais defective Replace
Sinter filter of pneumatic condensate valve
blocked
Replace
Piston of pneumatic condensate valve sticks Clean pneumatic condensate valve and restore
function, check/replace o-rings, replace valve
complete if necessary
Condensate drain starts before reaching final pressure
Cause of fault Remedy
Pressure stages are not as prescribed, control
pressure of pneumatic condensate valve too low Check corresponding inlet and outlet valve, re-
place if necessary.
Piston sealing of pneumatic condensate valve
contaminated / used up
Clean, replace if necessary
Timer / relais defective Replace
Timer / relais settings not correct Adjust as prescribed
Compressor stops before final pressure
Cause of fault Remedy
Final pressure switch settings not correct Correct settings
Opening pressure of the pressure maintaining
valve too high
Correct settings
Fuse / circuit breaker has tripped
Valid only for E models
Check fusing of the power supply / observe reg-
ulations
Emergency stop switch has tripped Unlock emergency stop switch, close compressor
housing door correctly