10
308156
Troubleshooting
Problem
Cause
Solution
Pump does not run.
Closed dispense valve.
Pump only runs with valve open.
Pressure too low.
Increase supply pressure using a
pressure adjusting valve.
Insufficient hydraulic fluid supply.
Check hydraulic supply. Adjust to a
maximum of 3 gpm (11 lpm) flow.
Clogged fluid outlet line, intake valve,
dispense valve, suction line.
Relieve pressure. Check; clear
obstructions.
Reciprocator damaged.
Repair. See page 13.
Pump speeds up or runs erratically.
Pump piston and/or intake
valve worn.
Relieve pressure. Check and repair.
See pages 17 and 18.
Empty supply container.
Refill and reprime. Do not allow pump
to run dry. Monitor closely or use a
low-level cutoff valve.
Pump runs, but output low on up
and/or down stroke.
Pump piston and/or intake valve
worn.
Relieve pressure. Check and repair.
See page 17 and 18.
Pump runs but output low on both
strokes.
Insufficient hydraulic fluid supply.
Check hydraulic supply. Adjust to
maximum 3 gpm (11 lpm) flow.
Pressure too low.
Increase supply pressure using a
pressure adjusting valve.
Clogged fluid outlet line, intake valve,
dispense valve, suction line.
Relieve pressure. Check; clear
obstructions.
Excessive weepage from weep
tube (B).
Worn throat packings.
Repair. See page 11.
Hydraulic oil leaks from fittings in the
upper or lower reciprocator blocks
(31,32).
Fittings (1,5,58) are loose, or their
o-rings are worn or damaged.
Tighten the self-sealing fittings. If
leaking persists, change the o-rings.
