Motor hums but
cannot run or runs
slowly
Current limiting
protector
Protector cuts out
repeatedly
Air tank pressure
drops when
compressor shuts off
36
Air Compressor 50L
Low voltage
Wrong gauge wire or length
of extension cord
Shorted or open motor
winding
Defective check valve or
unloader
LOW voltage
Lack of proper ventilation/
room temperature too high
Wrong gauge wire or length
of extension cord
Loose connections
(fitting, tubing, etc.)
Loose drain valve
Check valve leaking
Check with voltmeter
Check for proper gauge wire
and cord length
Take compressor to service
center
Take compressor to service
center
Check with voltmeter
Move compressor to
well ventilated area
Check for proper gauge wire
and cord length
Check all connection with
soap and water solution and
tighten
Tighten drain valve
Take compressor to service
center
DANGER!
Do not disassemble check
valve, tank drain valves or
safety relief valve with air in
tank- bleed tanks.