red lion RL-SP25T User Manual

MAINTENANCE
Troubleshooting
10
Troubleshooting
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.
For models equipped with tethered float
switch: Accumulation of trash or build-
up on float.
Clean float.
For models equipped with tethered float
switch: 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.

red lion RL-SP25T Specifications

General

Brand	red lion
Model	RL-SP25T
Category	Water Pump
Language	English