Porter-Cable PCH3740, A08058-0412-0 instruction manual Problem Cause Correction

PROBLEM	CAUSE	CORRECTION
Will not draw	Spray wand not in low pressure.	See How to Use Spray Wand
		paragraph in the Operation
chemicals
		Section.
	Chemical filter clogged.	Clean filter.
	Chemical screen not in cleaning	Make sure end of chemical hose
	solution.	is fully submerged into cleaning
		solution.
	Chemical too thick.	Dilute chemical. Chemical should
		be the same consistency as water.
	Pressure hose is too long	Lengthen water supply hose
		instead of high pressure hose.
	Chemical build up in chemical	Have parts cleaned or replaced
	injector.	by AWSC.
No or low	Worn seal or packing	Have replaced by AWSC.
pressure	Worn or obstructed valves.	Have replaced by AWSC.
(after period
of normal	Worn unloader piston.	Have replaced by AWSC.
use)
		Have replaced by AWSC.
	Worn E-Z start valve.
Water leaking	Worn or broken o-ring.	Check and replace.
at gun/
spray wand	Loose hose connection.	Tighten.
connection
Water	Loose connections.	Tighten.
leaking at	Piston packings worn.	Have replaced by AWSC.
pump
	Worn or broken o-rings.	Have replaced by AWSC.
	Pump head or tubes damaged	Have replaced by AWSC.
	from freezing.
Oil leaking	Oil seals worn.	Have replaced by AWSC
at pump	Loose drain plug.	Tighten.
	Worn drain plug o-ring	Check and replace.
	Worn fill plug o-ring.	Check and replace.
	Pump overfilled.	Check for correct amount.
	Incorrect oil used.	Drain and fill with correct amount
		and type of oil.
	Vent plug is clogged.	Clean vent plug; blow air through
		it to remove any blockage. If prob-
		lem persists, replace plug.
Pump	Nozzle obstructed.	See Nozzle Cleaning paragraph in
Pulsates		the Maintenance section for the
		correct procedure.

A08058 18- ENG