Porter-Cable C7550 Instruction Manual page 22

PROBLEM
Compressor is Prolonged excessive
not supplying use of air.
enough air
Compressor is not large
to operate
enough for air requirement.
accessories
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter.
Loose belt.
Restricted Dirty air filter.
air intake
Motor will Motor overload protection
not run switch has tripped.
Tank pressure exceeds
pressure switch "cut-
in" pressure.
Check valve stuck open.
Loose electrical
connections.
Possible defective motor
or starting capacitor.
Paint spray on internal
motor parts.
Pressure release valve on
pressure switch has not
unloaded head pressure.
1000003897
CAUSE
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.
Remove and clean, or replace.
Tighten fittings.
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.
Check belt tension, see Adjusting Belt
Tension in the Maintenance section.
Clean or replace. See Air
Filter paragraph in the
Maintenance section.
Refer to "Motor Overload Protection"
under Operation. If motor overload
protection trips frequently, contact
a Trained Service Technician
Motor will start automatically when
tank pressure drops below "cut-
in" pressure of pressure switch.
Remove and clean, or replace.
Check wiring connection
inside pressure switch and
terminal box area.
Have checked by a Trained
Service Technician.
Have checked by a Trained Service
Technician. Do not operate the
compressor in the paint spray area.
See flammable vapor warning.
Bleed the line by pushing the
lever on the pressure switch to
the "Off" position; if the valve
does not open, replace switch.
22-ENG
CORRECTION