Troubleshooting
Troubleshooting
Troubleshooting
• Follow the
Pressure Relief Procedure, page 11
,
before checking or servicing the equipment.
• Check all possible problems and causes before
disassembly.
Problem
Problem
Problem
Cause
Cause
Cause
Solution
Solution
Solution
Pump is running too fast, causing
cavitation before prime.
Slow down the controller (VFD)
Center section has no air pressure,
or air pressure is too low.
Apply air pressure to center section
per your application requirements.
Check valve ball is severely worn or
wedged in seat or manifold.
Replace the ball and seat.
The pump has insufficient suction
pressure.
Increase the suction pressure. See
the Operation manual.
Seat is severely worn.
Replace the ball and seat.
Outlet or inlet is restricted.
Remove the restriction.
Inlet fittings or manifolds are loose.
Tighten.
Pump cycles but will not
prime and/or pump.
Manifold o-rings are damaged.
Replace o-rings.
The center section is
excessively hot.
The drive shaft is broken.
Replace.
Check valve balls, seats, or o-rings
are worn.
Replace.
Manifold screws or fluid cover
screws are loose.
Tighten.
Pump fails to hold fluid
pressure at stall.
NOTE:
NOTE:
NOTE: Flapper checks
are not 100% fluid tight.
Diaphragm shaft bolt is loose
Tighten.
Motor or controller is wired
improperly.
Wire per manual.
Pump will not cycle.
The leak detector (if installed) has
tripped.
Check diaphragm for rupture or
incorrect installation. Repair or
replace.
The motor is operating,
but the pump will not
cycle.
The jaw coupling between the
motor and gearbox is not connected
properly.
Check the connection.
Suction line is clogged.
Inspect; clear.
Checks are sticky or leaking.
Clean or replace.
Pump flow rate is erratic.
Diaphragm (or backup) ruptured.
Replace.
Pump makes unusual
noises.
Pump is operating near or at stall
pressure.
Adjust air pressure or slow the pump
speed.
3A5133J
9
Summary of Contents for saniforce 2150
Page 24: ...Parts Parts Parts Parts 2150T 2150T 2150T Pump Pump Pump 24 3A5133J ...
Page 25: ...Parts 2150HS 2150HS 2150HS Ball Ball Ball Check Check Check Pump Pump Pump 3A5133J 25 ...
Page 26: ...Parts 3000HS 3000HS 3000HS Flapper Flapper Flapper Pump Pump Pump 26 3A5133J ...
Page 27: ...Parts 4000HS 4000HS 4000HS Flapper Flapper Flapper Pump Pump Pump 3A5133J 27 ...