Problems and solutions
Problem
Possible causes
Solutions
Motor unable to run, run-
ning too slow or getting hot
Fault in line / voltage insuffi-
cient
Power wire is too thin / 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 com-
pressor
Moving parts burnt due to oil
insufficiency
Moving parts damaged or
stuck due to foreign bodies
Check crankcase, bear-
ing, connecting rod, pis-
ton, piston ring, etc. and
replace if necessary
Heavy shaking or unusual
noise
Connecting part loosened
Foreign body got into main
compressor
Piston knocking valve seat
Moving parts seriously worn
Check and re-tighten
Check and clean away
Replace with thicker pa-
per gasket
Repair or replace
Pressure insufficient or
discharge capacity de-
creased
Motor runs too slow
Air filter blocked
Leakage of safety valve
Leakage of discharge pipe
Sealing gasket damaged
Valve plate damaged, carbon
build up or stuck
Piston ring and cylinder worn
of damaged
Check and repair
Clean/ replace cartridge
Check and adjust
Check and repair
Check and replace
Replace and clean
Repair or replace
© by WilTec Wildanger Technik GmbH
Item 61016
Page 8
http://www.WilTec.de
http://www.aoyue.eu
11 2020
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