E104684
23
TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSE
SOLUTION
Low pressure or
not enough air
or compressor
does not stop
Tank drain valve is open
Close drain valve
Fittings Leak
Check fittings with soapy water. Tighten or reseal leaking fittings.
DO NOT OVERTIGHTEN.
Restricted air intake
Clean or replace air filter element.
Prolonged excessive use of air
Decrease amount of air used.
Compressor not large enough
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Restricted check valve
Remove and clean or replace.
Hole in air hose
Check and replace if necessary.
Tank leaks
WARNING
:
Immediately replace tank. DO NOT attempt to
repair.
Blown seals
Replace compressor assembly.
Valve leaks
Replace compressor assembly.
Air leaks from
regulator, or
regulator does not
regulate pressure
Dirty or damaged regulator internal
parts.
Replace regulator or internal parts.
Regulated
pressure gauge
reading drops
when air accessory
is being used
This is normal
If pressure drops too low, adjust regulator while accessory is
used.
Compressor not large enough
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Pressure relief
valve opens
Tank pressure exceeded normal
operating pressure
Replace pressure switch
Pressure switch stuck
Replace pressure switch
Motor will not run
Tank pressure exceeds preset
pressure switch limit
Motor will start automatically when tank pressure drops below
kick-in pressure of pressure tank.
Make sure the Thermal Overload
Switch has not tripped. The motor has
a built in thermal cut out that trips
when necessary to protect the motor
from damage when overheated.
To reset the motor overload toggle turn the pressure switch ON/
OFF lever to the OFF position and unplug the unit from the
power outlet. Allow 10 minutes (minimum) for motor overload
cut-out to cool and reset. Unit can then be plugged in and
re-started.
Fuse blown or circuit breaker tripped
Make sure power cord is plugged in and the switch is on. Inspect for the
proper size fuse in your circuit box. If the fuse was tripped, reset it and restart
the unit. Disconnect other applications from same circuit and operate
compressor on a dedicated circuit. If repeated tripping occurs, inspect the
check valve or contact customer service or technician.
Check valve stuck open
Remove and clean or replace.
Pressure bleeder valve on pressure
switch has not unloaded head
pressure
Bleed line by moving pressure switch lever to OFF Position
before restarting. If bleeder valve does not open, replace bleeder
valve.
Wrong wire gauge in cord or excessive
extension cord length
• Check for proper gauge and extension cord length.
• See chart/label on unit.
Loose electrical connections
Contact authorized service center.
Possible defective capacitor
Contact authorized service center.
Paint spray on internal motor parts
Have checked at service center. Do not operate compressor in
the paint spray area
Possible defective motor
Have checked at service center.
Note: Troubleshooting problems may have similar causes and solutions.
