P.I.T. PAC016002-3.3/100, Manual

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6
AIR COMPRESSOR
TROUBLESHOOTING
Reduced Compressor Performance
Electric motor overheating and compressor stop during operation
Compressor stops during operation
Air leakage from the receiver to the discharge air duct - constant “hissing” when
the compressor is turned off
Causes:
1.Air filter is clogged.
2.Joints or to air ducts are damaged.
Actions:
1.Clean or replace filter unit.
2.Find location of the leak, then seal the
joint, or replace the air duct.
Causes:
1. Air from the receiver enters the discharge
air duct due to wear or clogging of the
check valve seal.
Actions:
1. Unscrew the hex head of the valve, clean
the seat and the gasket or replace it.
Causes:
1.Insufficient oil level in the compressor
crankcase.
2.Prolonged compressor operation at maxi-
mum pressure and air consumption – ther-
mal protection is triggered.
3.
Low mains voltage
Actions:
1.Check the quality and level of oil, if neces-
sary add oil.
2.Reduce the load on the compressor by
reducing air consumption. The compressor
will start automatically.
3.
Disconnect all extension cords from
the power supply circuit.
Causes:
1. Power supply failure.
Actions:
1. Check the power circuit.
Compressor turns off and then turns on after a few minutes.
Causes:
1. Thermal protection is triggered due to
overheating of the electric motor.
Actions:
1. Clean the air supply hoses. Ventilate the
room. Return the thermal protection relay to
working condition. Check the level and
quality of oil.
Air compressor