9 Fault Recognition and Rectification
9.1 Basic instructions
Error messages are classified in these categories:
■ Warning:
─ Warning messages
W
■ Fault (with indication):
─ Alarm messages
A
─ System messages
Y
─ Diagnostic messages
D
■ Other faults (without indication): See chapter 9.2
The messages valid for your machine are dependent on how the individual machine is equipped.
1. Do not attempt fault rectification measures other than those given in this manual!
2. In all other cases:
Have the fault rectified by an authorised KAESER SERVICE representative.
Further information See the operating manual of SIGMA CONTROL 2 for details regarding the various messages.
9.2 Other faults
Fault Possible cause Remedy
Machine runs but produces no
compressed air.
Inlet valve not opening or only
opening partially.
Call KAESER SERVICE.
Venting valve not closing. Call KAESER SERVICE.
Leaks in the pressure system. Check pipework and connec‐
tions for leaks and tighten any
loose connections.
Compressed air demand ex‐
ceeds the volumetric flow rate
from the compressor.
Check the air system for leaks.
Shut down consumer(s).
Hose coupling or maintenance
hose still plugged into the
quick-release coupling on the
oil separator tank.
Remove coupling or mainte‐
nance hose.
Cooling oil runs out of the in‐
take filter.
Oil level in the oil separator
tank too high.
Drain off oil until the correct lev‐
el is reached.
Inlet valve defective. Call KAESER SERVICE.
Compressor switches be‐
tween LOAD and IDLE more
than twice per minute.
Receiver too small. Increase size of 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
9.1 Basic instructions
901824 12 E
Operating Manual Screw Compressor
ASK
57
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