KAESER Premium Compact W 200/4, Service Manual

Page: 43 / 64

Alarm Possible cause Remedy
The machine runs continuously
but maximum pressure is not
reached.
Air filter clogged. Maintain or replace the air filter.
Valves* or valve plate between
cylinder head and cylinder are
leaking or dirty.
Contact KAESER Service.
Outlet valve reed broken. Contact KAESER Service.
Machine leaks air. Seal the leaks or replace the
components.
Leakage from an air consumer
connected to the air system.
Check possible leakage points.
The air demand is greater than
the machine's air delivery ca‐
pacity.
Use a larger machine.
Machine cuts in and out too of‐
ten.
Air receiver filled with conden‐
sate.
Drain condensate.
The machine switches off and
air escapes from the venting
valve.
Check valve defective. Replace the check valve.
The venting valve loses air
while the machine is running.
The venting valve is not clos‐
ing.
Maintain or replace the unload‐
ing valve.
The pressure switch does not
vent after switching off.
Venting valve dirty. Maintain or replace the unload‐
ing valve.
Air leaks from the pressure
switch while the machine is run‐
ning.
Defective switch diaphragm. Replace the pressure switch.
The venting valve is not clos‐
ing.
Maintain or replace the unload‐
ing valve.
Whistling sound from the cylin‐
der head.
Cylinder head fixing screws
loose.
Gasket defective.
Tighten the cylinder head fixing
screws.
Replace gasket.
The pressure relief valve blows
off before the cut-out pressure
is reached.
Pressure switch incorrectly set. Check pressure switch setting.
Valve spring defective.
Replace safety relief valve.
Dirt or foreign bodies on the
valve seat.
Let the pressure relief valve
blow off briefly.
Pressure relief valve on the air
cooler blows off prematurely.
Cooler clogged. Cooler pipe
blocked with scale.
Cooler maintenance.
Machine uses too much oil. Viscosity too low. Fill with oil specified in the ser‐
vice manual.
Crankcase vent defective. Maintain or replace crancase
vent.
Piston rings worn or broken. Contact KAESER Service.
Piston rings worn or damaged
after a short operational period.
Dirty oil. Fit finer air inlet filter.
* depending on machine
Tab. 30 Alarms and remedies
9 Fault Recognition and Rectification
9.2 Alarms
No.: 9_9418 20E
Service Manual Reciprocating compressor
Premium compact W
33