SERVICE MANUAL
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SM-eVENT-GB-3_8-2006.doc
10. FAULT FINDING AND TROUBLESHOOTING
Prior to repairing the appliance it is necessary to reduce the pressure of the air in
the air chamber to zero and disconnect the appliance from the mains supply.
Trained service personnel can only perform the activities connected to the troubleshooting guide.
FAILURE
POSSIBLE CAUSE
TROUBLESHOOTING
No mains voltage
Switched off mains breaker in
distribution system
Check Supply
Fuse Blown – replace the defective fuse
Loose wire terminal – tighten
No current in pressure switch
Power cord defective – replace power
cord
Interrupted winding of motor,
damaged thermal protection
Replace motor
Defective capacitor
Replace capacitor
Jammed piston or another rotary
part
Replace damaged parts
Compressor does
not start
Pressure switch does not switch on Change pressure switch
Leakage of air from pneumatic
distribution system
Control of pneumatic distribution system
– seal loose connection
The pointer of
humidity indicator is
out of green zone
Large consumption of compressed
air
Do not exceed max. flow (see technical
data)
Leakage of air from pneumatic
distribution system
Control of pneumatic distribution
system – seal loose connection
Compressor often
switches on
Leakage of check valve
Clean check valve, replace sealing,
replace check valve
Leakage of air from pneumatic
distribution system
Control of pneumatic distribution
system – seal loose connection
Worn-out piston rings
Replace worn-out piston rings
The operation of
compressor is
extended
Dirtly filter inserts
Replace the dirty inserts with new ones
Dirty air intake filter
Clean or replace the dirty air intake filter
with new ones
Dirtly filter inserts
Replace the dirty inserts with new ones
Replace faulty fans
Cooling fans don´ t work
Replace faulty thermo - switch
Red indication
lights – state of
overheating
High ambient temperature of air
Ensure suitable conditions of the
environment
Damaged piston bearing or
bearing on motor
Replace damaged bearing
Compressor is
noisy (knocking,
metal noises)
Loose (cracked) belt of the air
pump hanger
Replace damaged hanger
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