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