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TROUBLE SHOOTING
Trouble
Possible causes
Remedies
Motor not running,
(1)
Fault in line, or voltage insufficient
(1)
Check the line
Running too slow,
(2)
Power wire too thin or too long
(2)
Replace the wire
or getting hot
(3)
Fault in pressure switch
(3)
Repair or replace
(4)
Fault in motor
(4)
Repair or replace
(5)
Sticking of main compressor
(5)
Check and repair
Sticking of
main compressor
(1)
Moving parts burnt due to insuf
-
ficient oil
Check crankshaft, bearing,
connecting rod, piston,
piston ring, etc., replace if
necessary.
(2)
Moving parts damaged/ or stuck
by foreign body.
S
hakeing or abnormal
noise
(1)
Connecting part loose
(1)
Check and retighten
(2)
Foreign body got into main com
-
pressor
(2)
Check and clean away
(3)
Piston knocking valve seat
(3)
Replace with thicker
paper gasket
(4)
Moving parts worn
(4)
Repair or replace
Pressure insufficient
(1)
Motor running too slow
(1)
Check and remedy
(2)
Air filter chocked up
(2)
Clean or replace the
cartridge
(3)
Leakage of safety valve
(3)
Check and adjust
(4)
Leakage of discharge pipe
(4)
Check and repair
(5)
Sealing gasket damaged
(5)
Check and replace
(6)
Valve plate damaged, carbon
buildup or stuck.
(6)
Replace and clean
(7)
Piston ring and cylinder worn or
damaged
(7)
Repair or replace
O
il consumption
excessive
(1)
Oil level too high
(1)
Keep the level within
set range
(2)
Breath pipe chocked up
(2)
Check and clean
(3)
Piston ring and cylinder worn or
damaged
(3)
Repair or replace
1. The compressor is controlled by a pressure switch. It can be stopped
automatically as the pressure increases to the maximum and restarted
as pressure decreases to the minimum. The rated pressure has been
adjusted during the manufacturing process - don’t alter it carelessly.
2. As soon as motor switched off the compressed air in the discharge pipe
should be released through the release valve under the switch. This is
the necessary condition for restart, or the motor will be damaged. The
rated pressure can be adjusted by turning the adjusting bolt of the
switch
PRESSURE ADJUSTMENT
THERMAL RESET SWITCH
This compressor has a thermal overload device.
If the motor gets too hot, the thermal overload device cuts the power which
prevents damage to the motor.
If the thermal overload device operates, let the motor cool down for 5 min-
utes and push the reset button.
If you start the compressor and the overload cutout operates again, stop the
compressor and disconnect from the power supply and have your compressor
examined by a qualified service agent.
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