Merkury Innovations 312795E important safety instructions Troubleshooting, Problem Cause Solution

Troubleshooting

Troubleshooting

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

Relieve the pressure, page 14, before checking or servicing the equipment.

Problem	Cause	Solution
Pump output low on both strokes.	Restricted air supply lines.	Clear any obstructions; be sure all shutoff
		valves are open; increase pressure, but do
		not exceed maximum working pressure.
	Exhausted fluid supply.	Refill and reprime pump.
	Clogged fluid outlet line, valves, etc.	Clear.
	Worn piston u-cup or v-packings.	Replace. See Bellows Displacement Pump
		manual.*
Pump output low on only one stroke.	Held open or worn ball check valves.	Check and repair. See Bellows Displace-
		ment Pump manual.*
	Worn piston u-cup or v-packings.	Replace. See Bellows Displacement Pump
		manual.*
No output.	Improperly installed ball check valves.	Check and repair. See Bellows Displace-
		ment Pump manual.*
Pump operates erratically.	Exhausted fluid supply.	Refill and reprime pump.
	Held open or worn ball check valves.	Check and repair. See Bellows Displace-
		ment Pump manual.*
	Clogged suction tube or filter	Clear part(s).
	Worn piston u-cup or v-packings.	Replace. See Bellows Displacement Pump
		manual.*
	Damaged bellows.	Replace. See Bellows Displacement Pump
		manual.*
Material visible in the overflow chamber	Damaged bellows.	Replace. See Bellows Displacement Pump
(if equipped) or weeping from port in		manual.*
packing nut.
Pump will not operate.	Restricted air supply lines.	Clear any obstructions; be sure all shut off
		valves are open; increase pressure, but do
		not exceed maximum working pressure.
	Exhausted fluid supply.	Refill and reprime pump.
	Clogged fluid outlet line, valves, etc.	Clear.
	Damaged air motor.	See NXT Air Motor manual.*
	Runaway solenoid has tripped.	Retract solenoid. NXT Air Motor manual.*

*See Related Manuals, page 2, for manual numbers.

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