Troubleshooting Guide - Powerbuilt 641271 Mode D'emploi

Problem Encountered
The compressor does not
start or restart:
The compressor motor stalls:
Excessively noisy operation:
When in the Start/Stop
option, motor runs
continuously:
Overheating:
Air continues to leak at
motor/pressure switch release
valve after motor stops:

TROUBLESHOOTING GUIDE

Possible Cause
Power cord not plugged in.
Motor/Pressure switch in
OFF position
Motor thermal overload switch has
tripped.
Fuse blown or circuit breaker has
tripped.
Wrong gauge wire or length of
extension cord.
Air tank pressure exceeds motor/pressure
switch "cut-in" pressure.
Pressure release valve on
motor/pressure switch has not
unloaded pump head pressure.
Defective motor, motor capacitor,
motor/pressure switch.
Overloaded motor.
Improper lubrication.
Low oil level.
Defective check valve.
Loose motor pulley or pump flywheel.
Lack of oil in the pump crankcase.
Carbon deposits on pistons or valves.
Bearing, piston or connecting rod
failure.
Worn connecting rod.
Worn piston wrist pin bushing.
Worn bearings.
Noisy check valve.
Motor/Pressure switch does not shut
off motor when air compressor
reaches "cut-out" pressure and safety
relief valve activates.
Air compressor is incorrectly sized.
Poor ventilation
Dirty cooling fins.
Defective pilot valve, the check valve is
stuck open.
Possible Solution
Plug cord into grounded outlet.
Move switch to AUTO position.
Turn air compressor off, wait until the motor is cool, then
press motor thermal overload (red) button firmly until click
is heard.
Replace fuse or reset circuit breaker.
Check for proper fuse amperage.
Check for low voltage conditions.
Disconnect any other electrical appliances from circuit or
operate air compressor on its own branch circuit.
Check chart in instruction manual for proper gauge wire
and cord length.
Motor will start automatically when air tank pressure drops
below "cut-in" pressure of motor/pressure switch.
Bleed the line by moving the switch to the OFF position.
Contact Consumer Helpline at 1-800-423-3598.
Have a certified electrician check the motor and wiring.
Proceed with his or her recommendations.
See LUBRICATION section in instruction manual.
Check oil level and fill if necessary.
Replace check valve.
Tighten pulley and/or flywheel (where applicable).
Check oil level. If low, check for possible bearing damage.
Add correct amount of oil.
Remove cylinder head and inspect. Clean or replace parts
as needed.
STOP THE COMPRESSOR! Contact Consumer Helpline at
1-800-423-3598.
Replace with new connecting rod.
Remove piston/connecting rod assembly from the compressor
and inspect for excess wear. Replace worn parts as needed.
Replace worn bearings as needed.
NOTE: Dirty oil can cause accelerated wear.
Change oil frequently using recommended oil.
Replace check valve.
Move the motor/pressure switch to the OFF position. If the
motor does not shut off, unplug the air compressor. If the
electrical contacts are welded together, replace the pressure
switch.
Limit the air pressure to the capacity of the air compressor.
Either use a smaller tool or a larger air compressor.
Relocate the air compressor to an area with an ample supply
of cool, dry, and well-circulated air is available.
Clean the outer surfaces of the cooling fins on the pump and
motor assembly.
Remove, clean or replace.
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