red lion RL-SP25T Owner's Manual page 9

Troubleshooting
Problem
Pump does not turn on
Pump will not shut off
Pump runs but does not
discharge liquid
Pump does not deliver
rated capacity
Pump cycles continuously
Water sprays out of a hole
by a bolt on the base of
the unit
Replacement Parts
Part Number
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)
Probable Causes
Pump not connected to electrical power. Connect pump to a dedicated circuit equipped with GFCI.
Circuit breaker off or fuse removed.
Accumulation of trash or build-up on
float.
Float obstruction.
Defective switch.
Defective motor.
Float obstruction.
Pump is air locked due to missing or
clogged air relief hole.
Liquid inflow matches pump capacity.
Defective switch.
Check valve installed backwards.
Check valve stuck or plugged.
Lift too high for pump.
Inlet to impeller plugged.
Pump is air locked due to missing or
clogged air relief hole.
Lift too high for pump.
Low voltage, speed too slow.
Impeller or discharge pipe is clogged.
Impeller wear due to abrasives.
No check valve in long discharge pipe
allowing liquid to drain back into basin.
Check valve leaking.
Basin too small for inflow.
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.
Description
Corrective Action
Turn on circuit breaker or replace fuse.
Clean float.
Check float path and provide clearance.
Replace switch.
Replace pump.
Check float path and provide clearance.
If missing, drill an air relief hole as described in
lation" on page 5. If clogged, clean obstruction from air relief.
Larger pump required.
Replace switch.
Check flow indicating arrow on check valve body to ensure
proper installation.
Remove check valve and inspect for proper operation.
Check rated pump performance.
Pull pump and clean.
If missing, drill an air relief hole as described in INSTALLATION.
If clogged, clean obstruction from air relief hole.
Check rated pump performance.
Check that supply voltage matches the nameplate rating.
Pull pump and clean. Check pipe for scale or corrosion.
Replace pump.
Install a check valve in discharge line.
Inspect check valve for correct operation.
Install larger basin.
No corrective action is required.
MAINTENANCE
Troubleshooting
"Physical Instal-
9