Compressor Faults And Alarms; Working Pressure Too High; Working Pressure Too Low; Tab. 49 Fault: Working Pressure Too High - KAESER M43 Service Manual

9.3
9.3.1
Tab. 49
9.3.2
Tab. 50
64
9 Fault Recognition and Rectification
9.3

Compressor faults and alarms

Compressor faults and alarms

Working pressure too high

Possible cause
Proportional controller maladjus‐
ted or defective.
Inlet valve not closing.
Pressure gauge giving false
reading.
Venting valve does not blow off. Check the connections and
Fault: working pressure too high

Working pressure too low

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