Graco Inc 288217, 311052E, 288046, G40 important safety instructions Problem Cause Solution

Troubleshooting

Problem	Cause	Solution
Fluid needle will not trigger.	Loose or missing fluid needle stop	Replace stop or tighten setscrew.
	(21) or setscrew (19).
	Broken fluid needle (14).	Replace fluid needle.
	Air leaking around piston (20).	Replace o-ring (22) or piston assem-
		bly (20).
	Swollen piston o-ring (22).	Replace o-ring. Do not immerse pis-
		ton in solvent.
	Insufficient air pressure on trigger.	Increase air pressure or clean air
		line.
	Spray tip (9) is plugged.	Clean spray tip and air cap (30).
	Fluid filter is plugged.	Clean or replace filter.
	Plug (5) is in incorrect fluid port.	Move plug to fluid port consistent with
		manifold plumbing, unless you are
		using gun in a circulating system. If
		you are, all fluid ports in gun and on
		manifold should be open.
Fluid does not shut off.	Worn o-ring (25).	Replace o-ring.
	Piston cap (27) not fully tightened.	Tighten piston cap until it bottoms
		out.
	Spring (28) not in place.	Check spring position.
	Swollen piston o-ring (22).	Replace o-ring. Do not immerse pis-
		ton in solvent

18 311052E