Message Possible cause Remedy
TRAP Interrupts System message Call KAESER Service.
valve insp. h⇞ The motor bearings checking inter‐
val has expired.
Call KAESER Service.
ADT ↑ Maximum airend discharge temper‐
ature (ADT) almost reached.
Clean the cooler.
Check the cooling oil level.
Replace the oil filter.
Ensure adequate ventilation.
Keep surrounding temperature within rec‐
ommended limits.
access doors Doors opened with the machine
stopped.
Close access doors.
Tab. 46 Warning messages
9.4 Other Faults
Fault Possible cause Remedy
Machine runs but produces no
compressed air.
Inlet valve not opening or only
opening partially.
Call authorized KAESER Ser‐
vice representative.
Venting valve not closing. Call authorized KAESER Ser‐
vice representative.
Leaks in the pressure system. Check pipework and connec‐
tions for leaks and tighten any
loose fittings.
Air consumption is greater than
the capacity of the compressor.
Check the air system for leaks.
Shut down the consumer(s).
Hose coupling or maintenance
hose still plugged into the quick-
release coupling on the oil sep‐
arator tank.
Remove coupling or mainte‐
nance hose.
Cooling oil runs out of the air fil‐
ter.
Oil level in the oil separator tank
too high.
Drain off oil until the correct level
is reached.
Inlet valve defective. Call authorized KAESER Ser‐
vice representative.
Compressor switches between
LOAD and IDLE more than twice
per minute.
Air receiver too small. Increase size of air receiver.
Airflow into the compressed air
network restricted.
Increase air pipe diameters.
Check filter elements.
The differential between cut-in
and cut-out pressure too is
small.
Check switching differential.
9 Fault Recognition and Rectification
9.4 Other Faults
60
Service Manual Screw Compressor
BSD 9_5708 08 USE
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