Troubleshooting - Senco pc1010n Operating Instructions Manual

Probable Cause
• Power cord not plugged in.
• Motor/Pressure switch in
• 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, or check valve.
Symptom 2. When in the ON (1) position, motor runs continuously.
Probable Cause
• 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.
Symptom 3. Air continues to leak at motor/pressure switch release valve after motor stops.
Probable Cause
• The check valve is stuck open.
Symptom 4. Air continues to leak at motor/pressure switch release valve after motor is running.
Probable Cause
• Defective motor/pressure switch.
Probable Cause
• Possible defective safety relief valve.
• Excessive air tank pressure.

Troubleshooting

Symptom 1. Motor will not run or restart.
OFF (0) position.
Symptom 5. Air leaks from safety relief valve.
12
Remedy
• Plug cord into grounded outlet.
• Move switch to ON (1)
• Turn air compressor off, wait until motor is cool,
then check motor circuit breaker.
• 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 on page 10 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 (0) position.
• Contact Senco Customer Service.
Remedy
• Move the motor/pressure switch to the
position. If the motor doesn't 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.
Remedy
• Remove, clean, or replace.
Remedy
• Replace.
Remedy
• Operate safety relief valve manually by pulling on
ring. If it still leaks, it should be replaced.
• Defective motor/pressure switch. Replace.
position.
OFF (0)