Troubleshooting - Craftsman CMXECXA0200141A Instruction Manual

ENGLISH
WARNING: Risk of Unsafe Operation. Unit cycles automatically when power is on. When servicing, you may
be exposed to voltage sources, compressed air, or moving parts. Before servicing unit unplug or disconnect
PROBLEM
Excessive tank pressure - safety valve
pops off.
Air leaks at fittings.
Air leaks in air tank or at air
tank welds.
Air leaks between head and
valve plate.
Air leak from safety valve.
Knocking Noise.
Pressure reading on the regulated
pressure gauge drops when an
accessory is used.
Compressor is not supplying enough
air to operate accessories.
Regulator knob has continuous
air leak.
Regulator will not shut off air outlet. Damaged regulator.
Motor will not run.
10

TROUBLESHOOTING

CAUSE
Pressure switch does not shut off
motor when compressor reaches "cut-
out" pressure.
Pressure switch "cut-out" too high.
Tube fittings are not tight enough.
Defective air tank.
Leaking seal.
Possible defect in safety valve.
Possible defect in safety valve.
It is normal for "some" pressure drop
to occur.
Prolonged excessive use of air.
Compressor is not large enough for
air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Damaged regulator.
Fuse blown, circuit breaker tripped.
Extension cord is wrong length or gauge. Check the extension cord.
Loose electrical connections.
Faulty motor.
Motor overload protection switch
has tripped.
CORRECTION
Move On/Off lever to the "Off" position, if the outfit does not shut off
contact a Trained Service Technician.
Contact a Trained Service Technician.
Tighten fittings where air can be heard escaping. Check fittings with
soapy water solution. Do Not Overtighten.
Air tank must be replaced. Do not repair the leak.
WARNING: Risk of bursting. Do not drill into, weld or
otherwise modify air tank or it will weaken. The tank can
rupture or explode.
Contact a Trained Service Technician.
Operate safety valve manually by pulling on ring. If valve still leaks, it
should be replaced.
Operate safety valve manually by pulling on ring. If valve still leaks, it
should be replaced.
If there is an excessive amount of pressure drop when the accessory is
used, adjust the regulator following the instructions in the Description
of Operation paragraph in the Operation Section.
NOTE: Adjust the regulated pressure under flow conditions (while
accessory is being used).
Decrease amount of air usage.
Check the accessory air requirement. If it is higher than the SCFM or
pressure supplied by your air compressor, you need a larger compressor.
Check and replace if required.
Have checked by a Trained Service Technician.
Tighten fittings.
Replace.
Replace.
Check fuse box for blown fuse and replace as necessary. Reset circuit
breaker. Do not use a fuse or circuit breaker with higher rating than that
specified for your particular branch circuit.
Check for proper fuse. You should use a time delay fuse.
Check for low voltage problem.
Check the extension cord.
Disconnect the other electrical appliances from circuit or operate the
compressor on its own branch circuit.
Check wiring connection inside terminal box.
Have checked by a Trained Service Technician.
Refer to Motor Overload Protector under Description of Operation.
If motor overload protection trips frequently, contact a Trained
Service Technician.