Graco 237526, Series B dimensions Troubleshooting, Injection Hazard, Problem, Cause, Solution

Troubleshooting

WARNING

INJECTION HAZARD

To reduce the risk of serious bodily

injury, including fluid injection or splash- ing in the eyes or on the skin, always

follow the Pressure Relief Procedure on page 8 whenever you shut off the pump, when checking or servicing any part of the system, when installing or changing dispensing devices, and whenever you stop dispensing.

NOTE: Check all other possible problems and solutions before disassembling the pump.

Problem	Cause	Solution
Pump fails to operate	Inadequate air supply pressure or	Increase air supply; clear
	restricted air lines
	Closed or clogged dispensing	Open; clean
	valve
	Clogged fluid lines, hoses, valves,	Clear*
	etc.
	Damaged air motor	Service air motor
	Exhausted fluid supply	Refill and reprime or flush
Continuous air exhaust	Worn or damaged air motor gas-	Service air motor
	ket, packing, seal, etc.
Erratic pump operation	Exhausted fluid supply	Refill and reprime or flush
	Held open or worn intake valve or	Clear; service
	piston packings
Pump operates, but output low on	Held open piston valve or worn	Clear; service
up stroke	piston packings
Pump operates, but output low on	Held open or worn intake valve	Clear; service
down stroke
Pump operates, but output low on	Inadequate air supply pressure or	Increase air supply; clear
both strokes	restricted air lines
	Closed or clogged valves	Open; clean

*Follow the Pressure Relief Procedure on page 8, and disconnect the fluid line. If the pump starts when the air is turned on again, the line, hose, valve, etc., is clogged.

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