Graco 309063F important safety instructions Placement

Troubleshooting

LOW OR FLUCTUATING OUTPUT

TYPE OF PROBLEM	WHAT TO CHECK		WHAT TO DO
		If check is OK, go to next check	When check is not OK refer to this column
Motor runs and pump strokes	1.	Paint supply.	1.	Refill and reprime pump.
	2.	Intake strainer clogged.	2.	Remove and clean, then reinstall.
	3.	Suction tube or fittings loose.	3.	Tighten; use thread sealant or sealing tape
				on threads if necessary.
	4.	To see if intake valve ball and piston ball are	4.	Remove intake valve and clean. Check
		seating properly. See page 26.		balls and seats for nicks; replace if neces-
				sary, page 26. Strain paint before using to
				remove particles that could clog pump.
	5.	Leaking around throat packing nut which may	5.	Replace packings, page 26. Also check
		indicate worn or damaged packings. See		piston valve seat for hardened paint or
		page 26.		nicks and replace if necessary. Tighten
				packing nut/wet-cup.
	6.	Pump rod damage.	6.	Repair pump, page 26.
	7.	Capacitor failure. Visually inspect capacitor	7.	Replace capacitor.
		near terminals. Ensure that orange safety re-
		lief plug is intact.
Motor runs but pump does not	1.	Displacement pump pin (9a) (damaged or	1.	Replace pump pin if missing. Be sure re-
stroke		missing), page 26.		tainer spring (9b) is fully in groove all
				around connecting rod, page 26.
	2.	Connecting rod assembly (9) for damage,	2.	Replace connecting rod assembly,
		page 24.		page 24.
	3. Gears or drive housing, page 24.		3.	Inspect drive housing assembly and gears
				for damage and replace if necessary,
				page 24.
Motor is hot and runs intermit-	1.	Be sure ambient temperature where sprayer	1.	Move sprayer to shaded, cooler area if pos-
tently		is located is not more than 115 _F (46 _C) and		sible.
		sprayer is not located in direct sun.
	2.	Motor has burned windings indicated by re-	2.	Replace motor. See page 25, Motor Re-
		moving positive (red) brush and seeing		placement.
		burned adjacent commutator bars.
	3.	Tightness of pump packing nut. Overtighten-	3.	Loosen packing nut. Check for leaking
		ing tightens packings on rod, restricts pump		around throat. Replace pump packings if
		action and damages packings.		necessary. See pump manual 309060.

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