Graco Inc 313314B Repair / Réparation / Reparación, What to Check What to do Type of Problem

Repair / Réparation / Reparación

Repair / Réparation / Reparación

Troubleshooting / Dépannage / Solución de problemas

Mechanical/Fluid Flow / Mécanique/écoulement de fluide /

Problemas mecánicos/caudal de fluido

Relieve Pressure, page 15. / Décharger la pression, voir page 15. / Alivie la presión, página 15.

		WHAT TO CHECK		WHAT TO DO
TYPE OF PROBLEM	If check is OK, go to next check		When check is not OK, refer to this column
Pump output is low	1.	Spray tip worn	1.	Follow Pressure Relief procedure Warning,
				then replace tip. See your separate gun or tip
				manual.
	2.	Spray tip clogged	2.	Relieve pressure. Check and clean spray tip.
	3.	Paint supply	3.	Refill and reprime pump.
	4.	Intake strainer clogged	4.	Remove and clean, then reinstall
	5.	Intake valve ball and piston ball are	5.	Remove intake valve and clean. Check balls
		not seating properly		and seats for nicks; replace if necessary;
				see pump manual 310643. Strain paint before
				using to remove particles that could clog pump.
	6.	Suction hose connections	6.	Tighten any loose connections. Check for
				missing or damaged seals.
	7.	Fluid filter, tip filter, or tip is clogged	7.	Clean filter; see gun manual 311861.
		or dirty.
	8.	Prime valve leaking	8.	Relieve pressure. Replace or clean prime
				valve.
	9.	Verify pump does not continue to	9.	Service pump; see pump manual 310643.
		stroke when gun trigger is released
		(prime valve not leaking).
	10.	Leaking around throat packing nut	10.	Replace packings; see pump manual 310643.
		which may indicate worn or damaged		Also check piston valve seat for hardened paint
		packings.		or nicks and replace if necessary. Tighten
				packing nut/wet-cup.
	11.	Pump rod damage	11.	Repair pump. See pump manual 310643.
	12.	Low stall pressure	12.	Turn pressure knob fully clockwise. Make sure
				pressure control knob is properly installed
				to allow full clockwise position. If problem
				persists, replace pressure transducer.
	13.	Piston packings are worn	13.	Replace packings; see pump manual 310643.
		or damaged

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