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Operation Manual.
Pump overloads driver.
Pump vibrates and/ or
makes excessive noise.
Pump runs but no fluid.
Pump leaks at shaft
22
4. Insufficient inlet pressure or
suction head.
5. Clogged foot-valve, strainer,
or pump.
1. Total head lower than pump
rating, unit delivering too much
water.
2. Specific gravity and viscosity
of liquid being pumped different
than the pump rating
1. Mounting plate or
foundation not rigid enough.
2. Foreign material in pump
causing unbalance.
3. Impeller bent.
4. Cavitation present
5. Piping not supported to
relieve any strain on pump
assembly.
1. Faulty suction piping (air
leak)
2. Pump located too far from
fluid source
3. Gate valve closed.
4. Clogged strainer
6. Discharge height too great
7. Fouled impeller.
8. Faulty mechanical seal
1. Worn mechanical seal.
2. Replacement seal not installed
properly.
4. Increase inlet pressure by
adding more water to tank or in-
creasing back pressure by turning
gate valve on discharge line to
partially closed position.
5. Unclog, clear or replace as
necessary.
1. Increase back pressure on
pump by turning gate valve on
discharge line to partially closed
position that will not overload
motor
2. Consult factory.
1. Reinforce.
2. Disassemble pump and
remove foreign material..
3. Replace impeller
4. Check suction line for proper
size and check valve in suction
line if completely open, remove
any sharp bends before pump
and shorten suction line.
5. Make necessary adjustments.
1. Replace faulty suction piping
2. Reposition.
3. Open
4. Clean or replace
6. Lower the height
7. Clean or replace.
8. Replace
1. Replace
2. Follow Maintenance
instructions carefully
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