9.2.4 Drive engine knocking or fails to start
Possible cause
Action
Where can I get help?
SW
KS
Diesel engine running on petrol
or premium-grade petrol.
Switch the machine off immedi‐
ately (see Chapter 8.3). Pump
out / drain the tank. Replace the
fuel injection pump. Check the
drive engine.
X
X
SW = specialist workshop; KS = KAESER SERVICE
Tab. 78 Fault: “Drive engine knocking or fails to start”
9.3 Analysing compressor faults and alarms
9.3.1 Working pressure too high
Possible cause
Measure
Where can I get help?
SW
KS
Proportional controller maladjus‐
ted or defective.
Have it repaired or replaced if
necessary.
–
X
Inlet valve does not close.
Check the controller, control line
and inlet valve and replace if
necessary.
–
X
Pressure gauge indicating incor‐
rect reading.
Have it repaired or replaced if
necessary.
–
X
Venting valve does not blow off. Check the connections and
function and have it repaired or
replaced as necessary.
–
X
SW = Specialised workshop; KS = KAESER SERVICE
Tab. 79 Fault: working pressure too high
9.3.2 Working pressure too low
Possible cause
Measure
Where can I get help?
SW
KS
Proportional controller maladjus‐
ted or defective.
Have it repaired or replaced if
necessary.
–
X
Inlet valve not opening or only
opening partially.
Repair or have it replaced if
necessary.
–
X
Pressure gauge indicating incor‐
rect reading.
Have it repaired or replaced if
necessary.
–
X
Safety valve maladjusted and/or
leaking.
Have it repaired or replaced if
necessary.
–
X
SW = Specialised workshop; KS = KAESER SERVICE
9
Fault Recognition and Rectification
9.3
Analysing compressor faults and alarms
88
Operating Manual Portable Rotary Screw Compressor
MOBILAIR M27 PE
No.: 9_9548 22 HCE