Troubleshooting - Senco PC1249 Operating Instructions Manual

Symptom 1. Motor will not run or restart.
Power cord not plugged in.
Motor/Pressure switch in OFF (0) 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, or check valve.
Symptom 2. When in the Start/Stop option, 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.
TROUBLESHOOTIN G
Plug cord into grounded outlet.
Move switch to ON (1) position.
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 Off (0) position
If the motor doesn t shutoff, 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.
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