Troubleshooting, Problem, Cause, Solution, Operation

Operation

7.Read and follow the instructions supplied with each component in your system.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

8.If the pump will be unattended for any period of time, if there is an air supply interruption, or to shut off the system at the end of the work shift, always relieve the pressure.

9.Check periodically to ensure that the pump’s mounting is secure.

Troubleshooting

WARNING

SKIN 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 solu- tions 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; clear
	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 or worn piston packings	Clear; service
up stroke

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; clear

Fluid is coming out of the muffler.	Worn or damaged throat seal	Service

*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.

308608K 9

238108, Series D specifications

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