Possible cause
Remedy
Where can I get help?
Special‐
ised
work‐
shop
KAESER
Service
Engine
service
manual
Oil pressure switch indicating in‐
sufficient oil pressure.
Check the engine oil level (see
–
–
X
Have the engine repaired or ex‐
changed.
X
–
–
Tab. 72 Fault: engine refuses to start or comes to a stop.
9.3.2 Engine does not reach full speed
Possible cause
Remedy
Where can I get help?
Special‐
ised
work‐
shop
KAESER
Service
Engine
service
manual
Airlock in the fuel line between
fuel tank and injector pump.
Bleed the fuel line (see chapter
–
–
X
Fuel filter clogged.
Clean or replace, see chap‐
–
–
X
Fuel line broken.
Have changed.
X
–
–
Speed adjustment cylinder mal‐
adjusted or defective.
Repair or have replaced if neces‐
sary.
X
X
–
Engine electrical fault
Have repaired/changed.
X
–
–
SIGMA CONTROL MOBIL de‐
fective.
Have repaired/changed.
–
X
–
Tab. 73 Fault: engine does not reach full speed.
9.4 Compressor faults and alarms
9.4.1 Working pressure too high
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 closing.
Check the controller, the control
air line and the inlet valve and re‐
place if necessary.
–
X
Pressure gauge giving false
reading.
Have repaired or replaced if nec‐
essary.
–
X
9
Fault Recognition and Rectification
9.4
Compressor faults and alarms
No.: 9_6975 00 E
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
91
