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TROUBLESHOOTING
PUMP WILL NOT START:
Fuse or breaker
For correct voltage
connections
Pressure switch operation and correct voltage
at switch or motor wires (as equipped).
Rectifier or motor for open or grounded circuit
For locked drive assembly
WILL NOT PRIME: (No discharge/motor runs)
Out of product
Strainer for debris
Inlet tubing/plumbing; severe vacuum leak
Inlet/Outlet tube severely restricted (kinked)
Debris in pump inlet/outlet valves
Proper voltage with the pump operating
Pump housing for cracks
LEAKS FROM PUMP HEAD OR SWITCH:
For loose screws at switch or pump head.
Switch diaphragm ruptured or pinched
For punctured diaphragm if fluid is present at
bottom drain holes.
and electrical
(±10%)
PUMP WILL NOT SHUT-OFF:
(
Pressure
Output line closed and no leaks
For air trapped in outlet line or pump head
For correct voltage to pump
Inlet/Outlet valves for debris or swelling
For loose drive assembly or pump head
screws
Pressure switch operation/adjustment incorrect
refer to S/B
adjustment procedure
NOISY / ROUGH OPERATION:
Mounting feet that are compressed to tight
For loose pump head or drive screws
Does the mounting surface multiply
(±10%)
noise (flexible)
Is the pump plumbed with rigid pipe causing
noise to transmit
switch equip.)
#
1031 for differential and pressure
(±10%)
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