Table of Contents
Advertisement
Troubleshooting
Troubleshooting
•
Relieve the pressure before checking or servicing the equipment.
•
Check all possible problems and causes before disassembling the pump.
PROBLEM
Pump cycles at stall or fails to hold
pressure at stall.
Pump will not cycle, or cycles once
and stops.
Pump operates erratically.
Air bubbles in fluid.
14
CAUSE
Worn check valve balls (541) or
seats (233).
Air valve is stuck or dirty.
Check valve ball (541) severely
worn and wedged in seat (233) or
manifold.
Check valve ball (541) is wedged
into seat (233), due to overpressur-
ization.
Dispensing valve clogged.
Leak detector has activated a shut-
down solenoid
Clogged suction line.
Sticky or leaking balls (541).
Diaphragm ruptured.
Restricted exhaust.
Suction line is loose.
Diaphragm ruptured.
Loose inlet manifold, damaged seal
between manifold and seat, dam-
aged gaskets.
SOLUTION
Replace. See page 19.
Disassemble and clean air valve.
See page 16. Use filtered air.
Replace ball and seat. See page
19.
Follow Pressure Relief Proce-
dure, page 10. Disassemble ball
check assembly and inspect for
damage, see page 19.
Relieve pressure and clear valve.
Investigate failure and reset leak
detector
Inspect; clear.
Clean or replace. See page 19.
Replace. See page 21.
Remove restriction.
Tighten.
Replace. See page 21.
Tighten manifold clamps or replace
seats or gaskets. See page 19.
310622L
Advertisement
Table of Contents
