Porter-Cable C7501M Maintenance section, enough for air requirement, Pressure release valve on

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

21 - ENG N020206