9.4 Analysing compressor faults and alarms
9.4.1 Working pressure too high
Possible cause
Remedy
Where can I get help?
SW
KS
Proportional controller defective. Have repaired or replaced if
necessary.
–
X
Inlet valve does not close.
Check the controller, the control
air line and the inlet valve and
replace if necessary.
–
X
Pressure gauge indicating false
pressure.
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
SW = specialised workshop; KS = KAESER SERVICE
Tab. 63 Fault: working pressure too high
9.4.2 Working pressure too low.
Possible cause
Remedy
Where can I get help?
SW
KS
Proportional controller defective. Have repaired or replaced if
necessary.
–
X
Inlet valve not opening or only
opening partially.
Repair or have replaced if nec‐
essary.
–
X
Pressure gauge indicating false
pressure.
Have repaired or replaced if
necessary.
–
X
Pressure relief valve maladjus‐
ted and/or leaking.
Have repaired or replaced if
necessary.
–
X
Venting valve does not close.
Check the connections and
function and have repaired or
replaced as necessary.
–
X
Engine does not run at maxi‐
mum speed (in LOAD mode).
X
X
Engine air filter and/or compres‐
sor air filter clogged.
Clean or change, see chap‐
–
–
Oil separator cartridge heavily
clogged.
–
–
SW = specialised workshop; KS = KAESER SERVICE
Tab. 64 Fault: working pressure too low
9
Fault Recognition and Rectification
9.4
Analysing compressor faults and alarms
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
93
