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16 Electric Air Compressor Manual
Air compressor will not start or
restart.
TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE REMEDY
Plug power cord into grounded
outlet.
Pull the pressure switch lever up to
"ON" position.
Turn unit off, wait 5 minutes, then
press motor thermal overload until
click is heard.
Reset circuit breaker or replace
fuse if necessary using only "Fuse-
tron
®
" type T fuses.
Check for low voltage conditions.
Disconnect any other electrical
appliances for circuit or operate
air compressor on it's own branch
circuit.
Use additional air hose instead of
extension cord, or use proper wire
gauge and cord length.
Add oil.
Motor will start automatically when
air tank pressure drops down to the
"Start" pressure setting of the pres-
sure switch.
Bleed the line by pushing the pres-
sure switch to the "Off" position.
Remove, clean or replace.
Replace.
Power cord not plugged in.
Pressure switch lever turned "OFF".
The motor thermal overload tripped on
air compressor.
Circuit breaker tripped or fuse blown at
power source.
Extension cord too long or improper
wire gauge.
Lack of oil in the air compressor.
Air tank pressure has achieved the
"Stop" pressure setting of the pressure
switch.
Pressure release valve on pressure
switch has not unloaded pump head
pressure.
Check valve stuck.
Defective motor, motor capacitor or
pressure switch.
Air compressor will not start, but
motor hums then stops.
Incorrect voltage or, incorrect sized
circuit breaker, fuse or motor. Defec-
tive motor.
Too many appliances being operated
on same circuit.
Extension cord too long or improper
wire gauge.
Loose electrical connection.
Oil weight too heavy.
Defective check valve or pressure
switch.
Contact qualied electrician.
Disconnect any other electrical
appliances from circuit or operate
air compressor on its own branch
circuit.
Use additional air hose instead of
extension cord, or use proper cord
length or wire gauge.
Contact qualied electrician.
Use lighter weight oil.
Replace.