red lion RL-SP25T, Owner'S Manual, Page: 9 / 32

MAINTENANCE
Troubleshooting
9
Troubleshooting
Replacement Parts
Problem Probable Causes Corrective Action
Pump does not turn on
Pump not connected to electrical power. Connect pump to a dedicated circuit equipped with GFCI.
Circuit breaker off or fuse removed.
Turn on circuit breaker or replace fuse.
Accumulation of trash or build-up on
float. Clean float.
Float obstruction. Check float path and provide clearance.
Defective switch. Replace switch.
Defective motor. Replace pump.
Pump will not shut off
Float obstruction. Check float path and provide clearance.
Pump is air locked due to missing or
clogged air relief hole. If missing, drill an air relief hole as described in “Physical Instal -
lation” on page 5 . If clogged, clean obstruction from air relief.
Liquid inflow matches pump capacity. Larger pump required.
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 operation.
Lift too high for pump. Check rated pump performance.
Inlet to impeller plugged. Pull pump and clean.
Pump is air locked due to missing or
clogged air relief hole. If missing, drill an air relief hole as described in INSTALLATION.
If clogged, clean obstruction from air relief 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 the nameplate rating.
Impeller or discharge pipe is clogged. Pull pump and clean. Check pipe for scale or corrosion.
Impeller wear due to abrasives. Replace pump.
Pump cycles continuously
No check valve in long discharge pipe
allowing liquid to drain back into basin. Install a check valve in 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 spray
-
ing out of this hole is completely normal.
No corrective action is required.
Part Number Description
640171 Tethered Float Switch, Piggyback, 10 ft (3 m)
640172 Tethered Float Switch, Piggyback, 20 ft (6.1 m)
14942757 RL-SP-RVS Vertical Float Switch, Piggyback, 8 ft (2.4 m)