EN – Oil Free Silent Air Compressor
046 ‐ LI ‐SP‐EN‐ GENERAL SILENCIOSOS REV 171121
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9.‐ POSSIBLE FAULTS AND TROUBLE SHOOTING
Symptom
Possible Cause(s)
Corrective action
Compressor stops
running or does not
start.
1. Fuse blown or circuit breaker
tripped.
2. Loose electrical connections.
3. Overheated motor.
4. Main supply with inadequate
Voltage.
5. Motor windings burnt out.
1. Check for cause of blown fuse/breaker
and replace or reset.
2. Check wiring connections.
3. Press the reset button or wait for
automatic reset.
4. Check that the main voltage
corresponds to specifications. An
extension cable, which is too thin, and
too long can cause a voltage drop.
5. Contact the nearest Technical Service.
Tank pressure drops
down.
1. Air leak.
2. Air filter blocked.
3. Defective check valve.
1. Find and repair leak.
2. Clean and / or replace cartridge.
3. Check valve could be dirty, clean and
check it, if the problem persists, replace
check valve.
Safety valve releasing.
1. Defective pressure switch or
improper adjustment.
2. Safety valve does not work
properly.
1. Check adjustment of pressure switch
and replace in case the problem persists.
2. Check valve manually by pulling
upward on rings. In case the problem
persists, replace defective valve.
Solenoid valve leaks
when compressor is in
standby.
Defective non‐return valve seal.
Let the air in the tank Flow out until all
the pressure is released. Then remove
the non‐return valve plug and clean the
valve seat. If necessary replace the seal
and the re‐mount all the components.
The motor does not
start or makes a
humming noise.
Capacitor burnt out.
Replace starter capacitor.
Metallic noise.
Compressor head gasket is
broken, or valve faulty.
Stop the compressor and contact the
nearest Technical Service.
Compressor does not
reach desire pressure.
Compressor head gasket is
broken, or valve faulty.
Stop the compressor and contact the
nearest Technical Service.
Low compressed air
flow.
1. Pressure switch needs to be
adjusted.
2. Water from condensate in
receiver.
1. Stop the compressor and contact the
nearest Technical Service.
2. Open the ball valve and release the
pressure. Open the drain valve and
release the water.
Pump does not stop
when the tank
pressure reaches its
maximum working
pressure.
Defective pressure switch or
needs adjusting
Stop the compressor and contact the
nearest Technical Service.
