Graco 3A1334E important safety instructions Problem, Cause, Solution, Replace gasket

Troubleshooting

Problem	Cause	Solution
		Replace gasket.
	Gasket is leaking
Intermittent air leakage coming from		Lower air pressure to prevent reoc-
		currence.
behind the air manifold. Pump con-
tinues to function normally.		Clear obstruction.
	Thermal relief inlet check relief pas-
	sage in inlet housing is plugged
		Replace inlet filter.
	Worn or damaged piston o-ring or	Service air motor / valve
	valve cup.
Continuous air exhaust		Replace valve gasket.
	Damaged valve gasket
		Lower air pressure to prevent reoc-
		currence.
	Held open or worn intake valve	Clear; service.
	Held open or worn pump piston	Clear; service.
	packings
	The muffler is partially blocked	Clear muffler.
	The inlet filter is partially blocked	Clear the filter.
Pump operates but output is low
	Inadequate air supply pressure or	Increase air supply; clear restric-
	restricted air lines	tions.
	Partially closed or clogged pilot	Open valves. Clear clog as neces-
	valves	sary.
	Partially clogged fluid line, hose,	Clear clog as necessary.
	valves, etc.
Oil leakage through air exhausts	Throat seal is damaged	Replace throat seal (u-cup).

24 3A1334E