FPS IGP-A Series, Owner'S Manual, Page: 9 / 32

MAINTENANCE
Troubleshooting
9
Troubleshooting
Problem Probable Causes Corrective Action
Pump does not turn
on
Pump is not wired correctly Check wiring diagram and connections.
Circuit breaker is off or fuse is removed Turn on circuit breaker or replace fuse.
Accumulation of trash on float Clean float.
Float obstruction Clean float path and provide clearance.
Defective switch Replace switch
Defective motor Replace pump.
Pump will not shut
off
Float or float rod obstruction Check float and float rod path and provide clearance.
Pump is air locked Remove pump and clean air bleed hole.
Liquid inflow exceeds pump capacity Larger pump required.
Loose connection in level control wiring Check control wiring for loose or improper connection.
Defective switch Replace switch.
Pump runs but does
not discharge liquid
Check valve installed backwards
Check flow indicating arrow on check valve body to ensure
proper installation.
Check valve stuck or plugged Remove check valve and inspect for proper installation.
Lift too high for pump Check rated pump performance.
Inlet to impeller plugged Pull pump and clean.
Pump is air locked Remove pump and clean air bleed hole.
Pump does not
deliver rated capacity
Lift too high for pump Check rated pump performance.
Low voltage, speed too slow Check that supply voltage matches nameplate rating.
Impeller or discharge pipe is clogged Pull pump and clean. Check pipe for scale or corrosion.
Impeller wear due to abrasives Replace worn impeller.
Pump cycles continu -
ally
No check valve in long discharge pipe allowing water to drain
back into basin
Install a check valve in the discharge line.
Check valve leaking Inspect check valve for correct operation.
Basin too small for inflow Install larger basin.
Water sprays out of a
hole by a bolt on the
base of the unit
This pump comes with a bleed hole that allows trapped air to
escape from the pump, preventing air lock. Water spraying
out of this hole is completely normal
No corrective action is required.
Pump is noisy
Too-rigid piping attachments
Use a connector or rubber hose to replace part of the discharge
line.
Cavitation caused by pump being run below the minimum
head
Replace the pump.
The pump runs backwards Replace the pump. Interchange any two of three wires.
Circuit breaker trips
Improper wiring in junction box Check wiring in junction box.
Obstruction inside volute causing impeller to be locked
Remove volute to check impeller. Refer to “Disassembly” on
page 8 .
Protector tripping
(motor overloading/
overheating)
Obstructed pump impeller Pull pump and clean.
Switch stuck in the ON position Clean float path and provide clearance.
Pump running dry Ensure the pump has an adequate inflow supply.
Pump air-locked
Shut power off for approximately 1 minute, then restart. Repeat
several times to clear air from pump.
Pump short cycling Inspect check valve for proper installation and operation.
Excessively high or low voltage supply Refer to “Specifications” on page 3 .
Inadequate wiring
Refer to “Electrical Connections” on page 5 .
Incorrect motor connections
Misapplication of the product
Inspect fixtures, inlets, and outlets for leaks. Repair and correct
application as needed.
Operating the pump at low heads (low discharge restriction) Confirm pump performance and recheck sizing calculations.
Pump, motor, bearings, or seal have reached the end of their
useful life
Replace pump.