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Possible cause
Remedy
Where can I get help?
Specialised
workshop
KAESER Ser‐
vice
Inlet valve does not close.
Check the controller, the control
air line and the inlet valve and re‐
place if necessary.
–
X
Pressure gauge indicating false
pressure.
Have repaired or replaced if nec‐
essary.
–
X
Venting valve does not blow off. Check the connections and func‐
tion and have repaired or re‐
placed as necessary.
–
X
Tab. 70 Fault: working pressure too high
9.4.2 Working pressure too low.
Possible cause
Remedy
Where can I get help?
Specialised
workshop
KAESER Ser‐
vice
Proportional controller defective. Have repaired or replaced if nec‐
essary.
–
X
Inlet valve not opening or only
opening partially.
Repair or have replaced if neces‐
sary.
–
X
Pressure gauge indicating false
pressure.
Have repaired or replaced if nec‐
essary.
–
X
Pressure relief valve maladjusted
and/or leaking.
Have replaced if necessary.
–
X
Venting valve does not close.
Check the connections and func‐
tion and have repaired or re‐
placed as necessary.
–
X
Engine does not run at FULL
LOAD speed.
–
–
Engine air filter and/or compres‐
sor air filter clogged.
Clean or change, see chap‐
–
–
Oil separator cartridge heavily
clogged.
–
–
Tab. 71 Fault: working pressure too low
9.4.3 Pressure relief valve blowing off
Possible cause
Remedy
Where can I get help?
Specialised
workshop
KAESER Ser‐
vice
Oil separator cartridge heavily
clogged.
–
–
9
Fault Recognition and Rectification
9.4
Compressor faults and alarms
No.: 9_9425 01 E
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
93