5
Table 2
7. TROUBLES AND REMEDIES
Trouble
Possible causes
Remedies
Motor unable
Run or running too
slow, or
overheating
⑴
Fault in line, or voltage insufficient
⑵
Power wire too thin or too long
⑶
Fault in pressure switch
⑷
Fault in motor
⑸
Sticking of main compressor
⑴
Check the line
⑵
Replace the wire
⑶
Repair or replace
⑷
Repair or replace
⑸
Check and repair
Sticking of
main
compressor piston
⑴
Moving parts burnt due to low oil
level
⑵
Moving parts damaged or stuck by
foreign body
Check
crankshaft,
bearing,
connecting rod, piston, piston
ring, etc. and replace if
necessary
Terrible vibration
or abnormal
noise
⑴
Connecting part loosed
⑵
Foreign
body
got
into
main
compressor
⑶
Piston knocking valve seat
⑷
Moving parts seriously worn
⑴
Check and retighten
⑵
Check and clean away
⑶
Replace with thicker
paper gasket
⑷
Repair or replace
Insufficient Pressure or
Discharge capacity
decreased
⑴
Motor running too slow
⑵
Air filter clogged up
⑶
Leakage of safety valve
⑷
Leakage of discharge pipe
⑸
Sealing gasket damaged
⑹
Valve plate damaged, carbon buildup
or stuck
⑺
Piston ring and cylinder worn or
damaged
⑴
Check and remedy
⑵
Clean or replace the
cartridge
⑶
Check and adjust
⑷
Check and repair
⑸
Check and replace
⑹
Replace and clean
⑺
Repair or replace
The oil
consumption
too excessive
⑴
Oil level too high
⑵
Breath pipe clogged up
⑶
Piston ring and cylinder worn or
damaged
⑴
Keep the level within
set range
⑵
Check and clean
⑶
Repair or replace
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