Merkury Innovations 312795E Manuale Utente

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

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

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

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 
(if equipped) or weeping from port in
packing nut.

Damaged bellows.

Replace. See Bellows Displacement Pump 
manual.*

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.*