Senco PC1010 - Manual (Page 13)

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TROUBLESHOOTING
Symptom 1. Motor will not run or restart.
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, or check valve.
Plug cord into grounded outlet.
Move switch to “ON” 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” position.
Contact Senco Customer Service.
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.
PROBABLE CAUSE
Defective pilot valve, the check valve is stuck open.
REMEDY
Move the motor/pressure switch to the “Off” 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.
Symptom 2. When in the Start/Stop option, motor runs continuously.
Symptom 3. Air continues to leak at motor/pressure switch release valve after motor stops.
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PROBABLE CAUSE
Defective motor/pressure switch.
PROBABLE CAUSE
Possible defective safety relief valve.
Excessive air tank pressure.
PROBABLE CAUSE
Fittings are not tight enough.
PROBABLE CAUSE
Defective or rusted air tank.
PROBABLE CAUSE
Damaged inlet (reed) valve.
TROUBLESHOOTING
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.
REMEDY
Tighten fittings where air can be heard escaping. Check
fittings with soapy water solution. Do not overtighten.
REMEDY
Air tank must be replaced. Do not attempt to repair
air tank!
REMEDY
Contact SENCO Customer Service 888-222-8144.
Symptom 4. Air continues to leak at motor/pressure switch release valve while motor is running.
Symptom 5. Air leaks from safety relief valve.
Symptom 6. Air leaks at fittings.
Symptom 7. Air leak in air tank.
Symptom 8. Air blowing from inlet filter.
PROBABLE CAUSE
Pressure regulator knob not turned to high enough
pressure or defective pressure regulator.
Restricted air intake filter.
Air leaks.
Air compressor is not large enough for air
requirement.
REMEDY
Adjust pressure regulator knob to proper setting or
replace.
Clean.
Check for leaks and repair.
Check the accessory air requirement. If it is higher than
the CFM or pressure supply of the air compressor, you
need a larger air compressor.
Symptom 9. Insufficient pressure at air tool or accessory.