9.3 Compressor faults and alarms
9.3.1 Working pressure too high
Possible cause
Remedy
Where can I get help?
Specialised
workshop
KAESER Ser‐
vice
Proportional controller maladjus‐
ted or defective.
Check the diaphragm and clean
the nozzle or replace the pro‐
portional controller if necessary.
–
X
Inlet valve not closing.
Check the controller, the control
air line and the inlet valve and
replace if necessary.
–
X
Pressure gauge giving false
reading.
Have repaired or replaced if
necessary.
–
X
Venting valve does not blow off. Check the connections and
function and have repaired or
replaced as necessary.
–
X
Tab. 49 Fault: working pressure too high
9.3.2 Working pressure too low
Possible cause
Remedy
Where can I get help?
Specialised
workshop
KAESER Ser‐
vice
Proportional controller maladjus‐
ted or defective.
Check the diaphragm and clean
the nozzle or replace the pro‐
portional controller if necessary.
–
X
Inlet valve not opening or only
opening partially.
Repair or have replaced if nec‐
essary.
–
X
Pressure gauge giving false
reading.
Have repaired or replaced if
necessary.
–
X
Pressure relief valve maladjus‐
ted and/or leaking.
Have replaced if necessary.
–
X
Venting valve does not close.
Check the connections and
function and have repaired or
replaced as necessary.
–
X
Engine not running at full speed. See chapter 9.2.
–
–
Engine air filter and/or compres‐
sor air filter clogged.
Clean or change, see chap‐
ters 10.3.2 and 10.4.6.
–
–
Oil separator cartridge heavily
clogged.
Change, see chapter 10.4.5.
–
–
Tab. 50 Fault: working pressure too low
9
Fault Recognition and Rectification
9.3
Compressor faults and alarms
64
Service Manual Screw Compressor
M43
No.: 9_9432 02 E
RAMIRENT
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