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21 - ENG
PROBLEM CAUSE CORRECTION
Compressor is
not supplying
enough air
to operate
accessories
Prolonged excessive
use of air.
Decrease amount of air usage.
Compressor is not
large enough for
air requirement.
Check the accessory air
requirement. If it is higher than
the SCFM or pressure supplied
by your air compressor, you
need a larger compressor.
Hole in hose. Check and replace if required.
Check valve restricted. Remove and clean, or replace.
Air leaks. Tighten fittings.
Restricted air intake filter. Clean or replace air intake filter. Do not
operate the air compressor with the
filter removed. Refer to the Air Filter
paragraph in the Maintenance section.
Loose belt. Loosen wingnut and then
tighten wingnut until it contacts
the washer, plus one turn.
Restricted
air intake
Dirty air filter.
Clean or replace. See Air Filter
paragraph in the Maintenance section.
Motor will
not run
Motor overload
protection switch
has tripped.
Refer to Motor Overload Protection
under Operation. If motor overload
protection trips frequently, contact
a Trained Service Technician
Tank pressure exceeds
pressure switch
"cut-in" pressure.
Motor will start automatically when
tank pressure drops below "cut-
in" pressure of pressure switch.
Check valve stuck open. Remove and clean, or replace.
Loose electrical
connections.
Check wiring connection inside
pressure switch and terminal box area.
Possible defective motor
or starting capacitor.
Have checked by a Trained
Service Technician.
Paint spray on internal
motor parts.
Have checked by a Trained Service
Technician. Do not operate the
compressor in the paint spray area.
See flammable vapor warning.
Pressure release valve on
pressure switch has not
unloaded head pressure.
Bleed the line by pushing the
lever on the pressure switch to
the "Off" position; if the valve
does not open, replace switch.
Motor will not
run (continued)
Fuse blown, circuit
breaker tripped.
1. 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.
2. Check for proper fuse. You
should use a time delay fuse.
3. Check for low voltage conditions
and/or proper extension cord.
4. Disconnect the other electrical
appliances from circuit or
operate the compressor on
its own branch circuit.