Excell Precision XR2750 operation 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
	Worn unloader piston.	Have replaced by AWSC.
normal use)
	Worn E-Z start valve.	Have replaced by AWSC.
Water leaking at	Worn or broken o-ring.	Check and replace.
gun/spray wand
	Loose hose connection.	Tighten.
connection
Water leaking
	Loose connections.	Tighten.
at pump
	Piston packings worn.	Have replaced by AWSC.
	Worn or broken o-rings.	Have replaced by AWSC.
	Pump head or tubes damaged	Have replaced by AWSC.
	from freezing.
Oil leaking at	Oil seals worn.	Have replaced by AWSC
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 Pulsates	Nozzle obstructed.	See Nozzle Cleaning paragraph in
		the Maintenance section for the
		correct procedure.

A12338 16- ENG