Porter-Cable Air Compressor instruction manual Refer to Motor Overload Protection

PROBLEM	CAUSE	CORRECTION
Motor will	Motor overload	Refer to Motor Overload Protection
not run	protection switch	under Operation. If motor overload
	has tripped.	protection trips frequently, contact
		a Trained Service Technician
	Tank pressure exceeds	Motor will start automatically when
	pressure switch	tank pressure drops below "cut-
	"cut-in" pressure.	in" pressure of pressure switch.
	Check valve stuck open.	Remove and clean, or replace.
	Loose electrical	Check wiring connection inside
	connections.	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.
	Fuse blown, circuit	1. Check fuse box for blown fuse
	breaker tripped.	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.

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