Graco 312001R important safety instructions Problem Cause Solution

Troubleshooting

Problem	Cause	Solution
Pressure is set at maximum but	Reversible spray tip is in	Rotate arrow-shaped handle on
cannot achieve a good spray	UNCLOG position.	spray tip so it points forward in
pattern.		SPRAY position, page 14.
	Spray tip is too large for sprayer.	Select smaller spray tip.
	Spray tip is worn beyond	Replace spray tip.
	capability of sprayer.
	Extension cord is too long or not	Replace extension cord.
	heavy enough gauge.	Grounding and Electrical
		Requirements, page 7.
	Spray gun fluid filter is clogged.	Clean or replace spray gun fluid
		filter, page 21.
	InstaClean fluid filter is clogged.	Clean or replace InstaClean fluid
		filter, page 21.
	Inlet screen is clogged.	Clean debris off inlet screen.
	Pump valves are worn, or debris	Check for worn pump valves.
	is clogging valve.	a. Prime sprayer with paint
		b. Trigger gun momentarily.
		When trigger is released,
		pump should cycle
		momentarily and stop. If
		pump continues to cycle,
		pump valves may be worn.
		c. Remove valves and check
		for debris.
	Material is too thick.	Thin material.
	Hose is too long (if extra section is	Remove section of hose.
	added).
Spray gun stopped spraying.	Suction tube is leaking.	Tighten suction tube connection.
		Inspect for cracks or vacuum
		leaks.
	Spray tip is clogged.	Unclog spray tip, page 14.
When paint is sprayed, it runs	Coat is going on too thick.	Move gun faster.
down the wall or sags.
		Choose a tip with smaller hole
		size.
		Choose tip with wider fan.
		Make sure gun is far enough from
		surface.
When paint is sprayed, coverage	Coat is going on too thin.	Move gun slower.
is inadequate.
		Choose tip with larger hole size.
		Choose tip with narrower fan.
		Make sure gun is close enough to
		surface.

28 312001R