Table of Contents
Advertisement
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
PROBLEM
Pump will not run.
Pump speeds up or runs erratically. Pump piston and/or intake
Pump runs, but output low on up
and/or down stroke.
Pump runs but output low on both
strokes.
Excessive weepage from porous
plug (B).
Hydraulic oil leaks from fittings in the
upper or lower reciprocator blocks
(53, 47).
Troubleshooting
Note: Check all possible problems and solutions
before disassembling the pump or reciprocator.
CAUSE
Closed dispense valve.
Pressure too low.
Insufficient hydraulic fluid supply.
Clogged fluid outlet line, intake
valve, dispense valve, suction line.
Reciprocator damaged.
valve worn.
Empty supply container.
Pump piston and/or intake valve
worn.
Insufficient hydraulic fluid supply.
Pressure too low.
Clogged fluid outlet line, intake
valve, dispense valve, suction line.
Worn throat seals..
Fittings (16,17,25) are loose, or their
o-rings are worn or damaged.
SOLUTION
Pump only runs with valve open.
Increase supply pressure using the
pressure adjusting valve.
Check hydraulic supply . Adjust to a
maximum of 3 gpm (11 liter/min) flow.
Relieve pressure. Check; clear
obstructions.
Repair. See page 14 or 17.
Relieve pressure. Check and repair .
See page 18.
Refill and reprime. Do not allow pump
to run dry. Monitor closely or use a low-
level cutoff valve.
Relieve pressure. Check and repair .
See page 18.
Check hydraulic supply.
Increase supply pressure using the
pressure adjustment on the control.
Relieve pressure. Check; clear
obstructions.
Repair. See page 12.
Tighten the self-sealing fittings. If leak-
ing persists, change the o-rings.
Advertisement
Table of Contents
