11
TROUBLES AND REMEDIES
Trouble
Possible causes
Remedies
Motor unable to
run or running
slow
Fault in line, or voltage insufficient
Power wire too thin or too long
Fault in pressure switch
Fault in motor
Sticking of main compressor
Check the line
Replace the wire
Repair or replace
Repair or replace
Check and repair
Sticking of
main
compressor
Moving parts burnt due to the oil insufficient
Moving parts damaged, or stuck by foreign
body
Check crankshaft, bearing, con-
necting rod, piston, piston ring, etc.
and replace if necessary
Excessive vibra-
tion
or abnormal
noise
Connecting part loosed
Foreign body got into main compressor
Piston knocking valve seat
Moving parts seriously worn
Check and retighten
Check and clean away
Replace with thicker
paper gasket
Repair or replace
Pressure
insufficient or
discharge
capacity
decreased
Motor running too slow
Air filter choked up
Leakage of safety valve
Leakage of discharge pipe
Sealing gasket damaged
Valve plate damaged, carbon buildup or
stuck
Piston ring and cylinder worn or damaged
Check and remedy
Clean or replace the cartridge
Check and adjust
Check and repair
Check and replace
Replace and clean
Repair or replace
Excessive oil
consumption
Oil level too high
Breath pipe choked up
Piston ring and cylinder worn or damaged
Keep the level within
set range
Check and clean
Repair or replace
