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Troubleshooting
312376L 17
* To determine if fluid hose or gun is obstructed, follow Pressure Relief Procedure, page 12. Disconnect fluid
hose and place a container at pump fluid outlet to catch any fluid. Turn on air just enough to start pump. If pump
starts when air is turned on, the obstruction is in the fluid hose or gun.
Erratic or accelerated pump
speed.
Exhausted fluid supply. Refill and prime.
Fluid is too heavy for pump priming. Use drain/purge valve. Use a ram. See
Supply Units Operation manual 313526.
Increase ram air pressure.
Held open or worn intake valve or
seals.
Clear valve. Replace seals. See separate
Check-Mate Displacement Pump manual
312375.
Held open or worn priming piston. Clear; service. See separate Check-Mate
Displacement Pump manual 312375.
Worn packings in displacement pump. Replace packings.See separate
Check-Mate Displacement Pump manual
312375.
Problem Cause Solution