Liberty Pumps HT40 Series User manual

Installer: Manual must remain
with owner/operator. Record information from pump nameplate:
Model:
7000 Apple Tree Avenue
Bergen, NY 14416
ph: 1-800-543-2550
fax: [phone]
www.LibertyPumps.com
Keep this manual handy for future reference.
For replacement manual, visit LibertyPumps.com,
or contact Liberty Pumps at 1-800-543-2550.
Retain dated sales receipt for warranty.
Serial:
Mfg Date:
Install Date:
Installation Manual 7387000F
Copyright © Liberty Pumps, Inc. 2023 All rights reserved.
HT40-Series High Temp Submersible Pumps
Models
HT41A
4/10 hp
115V Automatic
HT41M
4/10 hp
115V Manual

2 | EN Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 7387000F
Contents
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 | EN
Model Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 3 | EN
Inspection and Storage. . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Pump System Components . . . . . . . . . . . . . . . . . . . . . 4 | EN
Pump Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 | EN
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 | EN
Maintenance and Troubleshooting . . . . . . . . . . . . . . . 6 | EN
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 | EN
Safety Guidelines
Safety Precautions
Accidental contact with electrically live parts, items, fluid, or
water can cause serious injury or death.
Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
All installation and maintenance of pumps, controls,
protection devices, and general wiring shall be done by
qualified personnel.
The pump shall be plugged into a properly fused electrical
outlet with a ground fault circuit interrupter (GFCI) that
conforms to current National Electric Code (NEC) and all
applicable local codes. All wiring must be performed by
qualified personnel.
All electrical and safety practices shall be in accordance with
the National Electrical Code®, the Occupational Safety and
Health Administration, or applicable local codes and
ordinances.
Do not remove cord and strain relief, and do not connect
conduit to pump.
Pump shall be properly grounded using its supplied
grounding conductor. Do not bypass grounding wires or
remove ground prong from attachment plugs. Failure to
properly ground the pump system can cause all metal
portions of the pump and its surroundings to become
energized.
Do not handle or unplug the pump with wet hands, when
standing on damp surface, or in water unless wearing
Personal Protective Equipment.
Always wear dielectric rubber boots and other applicable
Personal Protective Equipment (PPE) when water is on the
floor and an energized pump system must be serviced, as
submerged electrical connections can energize the water. Do
not enter the water if the water level is higher than the PPE
protection or if the PPE is not watertight.
Do not lift or carry a pump or a float assembly by its power
cord. This will damage the power cord, and could expose the
electrically live wires inside the power cord.
The electrical power supply shall be located within the length
limitations of the pump power cord, and for below grade
installations it shall be at least 4 ft (1.22 m) above floor level.
Do not use this product in applications where human contact
with the pumped fluid is common (such as swimming pools,
fountains, marine areas, etc.).
Protect the power and control cords from the environment.
Unprotectedpowerand control(switch) cords can allow water
to wick through ends into pump or switch housings, causing
surroundings to become energized.
Some products may have internal capacitors that could cause
shock. Avoid contact with plug ends after removing from
energy source.
Do not use metal or any other electrical conducting material
to raise the float or contact anything inside an electrically live
sump pit.
This product requires a separate, properly fused and
grounded branch circuit, sized for the voltage and amperage
requirements of the pump, as noted on the nameplate.
Overloaded branch circuit wires will get very hot and can
catch on fire. When used, electrical outlets shall be simplex of
the appropriate rating.
This safety alert symbol is used in the manual
and on the pump to alert of potential risk for
serious injury or death.
This safety alert symbol identifies risk of
electric shock. It is accompanied with an
instructionintendedtominimizepotentialrisk
of electric shock.
This safety alert symbol identifies risk of fire.
Itis accompaniedwithaninstructionintended
to minimize potential risk of fire.
This safety alert symbol identifies risk of
serious injury or death. It is accompanied
with an instruction intended to minimize
potential risk of injury or death.
Warns of hazards which if not avoided will
result in serious injury or death.
Warns of hazards which if not avoided could
result in serious injury or death.
Warns of hazards which if not avoided could
result in minor or moderate injury.
Signals an important instruction related to the
pump. Failure to follow these instructions
could result in pump failure or property
damage.
Read every supplied manual before using
pumpsystem.Followallthe safetyinstructions
inmanual(s)andonthepump.Failuretodoso
could result in serious injury or death.
RISK OF ELECTRIC SHOCK
RISK OF FIRE

7387000F Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 3 | EN
Do not use an extension cord to power the product. Extension
cords can overload both the product and extension cord
supply wires. Overloaded wires will get very hot and can catch
on fire.
For cord replacement: power cord must be of the same length
and type as originally installed on the Liberty Pumps product.
Use of incorrect cord may lead to exceeding the electrical
rating of the cord and could result in death, serious injury, or
other significant failure.
Do not use this product with or near flammable or explosive
fluids such as gasoline, fuel oil, kerosene, etc. If rotating
elements inside pump strike any foreign object, sparks may
occur. Sparks could ignite flammable liquids.
Sewage and effluent systems produce and may contain
flammable and explosive gases. Prevent introduction of
foreign objects into basin as sparks could ignite these gases.
Exercise caution using tools and do not use electronic devices
or have live, exposed electrical circuits in or around basins,
open covers and vents.
These pumps are not to be installed in locations classified as
hazardous in accordance with the National Electric Code®,
ANSI/NFPA 70.
Do not modify the pump/pump system in any way.
Modifications may affect seals, change the electrical loading
of the pump, or damage the pump and its components.
All pump/pump system installations shall be in compliance
with all applicable Federal, State, and Local codes and
ordinances.
Do not allow children to play with the pump system.
Do not allow any person who is unqualified to have contact
with this pump system. Any person who is unaware of the
dangers of this pump system, or has not read this manual, can
easily be injured by the pump system.
Vent basin in accordance with local code. Proper venting of
sewer and effluent gases alleviates poisonous gas buildup
and reduces the risk of explosion and fire from these
flammable gases.
Wear adequate Personal Protective Equipment when working
on pumps or piping that have been exposed to wastewater.
Sump and sewage pumps often handle materials that can
transmit illness or disease upon contact with skin and other
tissues.
Do not remove any tags or labels from the pump or its cord.
Keep clear of suction and discharge openings. To prevent
injury, never insert fingers into pump while it is connected to
a power source.
Do not use this product with flammable, explosive, or
corrosive fluids. Do not use in a flammable and/or explosive
atmosphere as serious injury or death could result.
Energizing the control panel or breaker for the first time is
potentially dangerous. Licensed electrical personnel should
be present when the panel or breaker is energized for the first
time. If faults caused by damage or poor installation practices
have not been detected, serious damage, injury or death can
result when power is applied.
This product contains chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. www.p65warnings.ca.gov.
This pump has been evaluated for use with water only.
Do not dispose of materials such as paint thinner or other
chemicals down drains. Doing so could chemically attack and
damage pump system components and cause product
malfunction or failure.
Do not position the pump float directly under the inlet from
drain tile or in the direct path of any incoming water.
Keep pump upright.
This pump is designed to pump high temperature water. The
maximum water temperature is 200°F (93°C) on an
intermittent basis. The maximum water temperature for
continuous operation (duty cycle) is 190°F (88°C).
Do not use pump system with mud, sand, cement,
hydrocarbons, grease, or chemicals. Pump and system
components can be damaged from these items causing
product malfunction or failure. Additionally, flooding can
occur if these items jam the impeller or piping.
Do not introduce any consumer item that is not toilet paper
into a non-grinder (dewatering, effluent, sewage) pump/
pump system. This includes, but is not limited to the
following:feminineproducts, wipes, towels, towelettes, dental
floss, swabs, pads, etc. Items such as these put the pump
under undo strain and can result in pump/pump system
failure. Additionally, it creates conditions for discharge line
blockage.
Submersible Pump—do not run dry.
Do not allow pump to freeze.
At no time shall the pump be stored within an incomplete wet
pit. The pump shall not be placed into the pit until it can be
fully operational.
Model Specifications
For complete listing of models and their specifications, refer to
www.LibertyPumps.com/About/Engineering-Specs. Pump
nameplate provides a record of specific pump information.
RISK OF SERIOUS INJURY OR DEATH
General Information
Before installation, read these instructions carefully. Each
Liberty Pumps product is individually factory tested to
ensure proper performance. Closely following these
instructions will eliminate potential operating problems,
assuring years of trouble-free service.
Provide pump serial number in all correspondence.
Pumps must be serviced at a qualified repair facility
approved by Liberty Pumps. No repair work should be
carried out during the warranty period without prior factory
approval. Any unauthorized field repairs void warranty.
Contact Liberty Pumps at 1-800-543-2550 to locate the
closest authorized service center.

4 | EN Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 7387000F
Inspection and Storage
Initial Inspection
The pump should be immediately inspected for damage that may
have occurred in shipment.
1. Visually check the pump and any spare parts for damage.
2. Check for damaged electrical wires, especially where they exit
the motor housing.
Contact Liberty Pumps customer service to report any damage or
shortage of parts.
Storage Before Use
Protect the power and control cords from the environment.
Unprotectedpower andcontrol (switch)cords can allowwater
to wick through ends into pump or switch housings, causing
surroundings to become energized.
At no time shall the pump be stored within an incomplete wet
pit. The pump shall not be placed into the pit until it can be
fully operational.
Do not allow the pump to freeze.
Pumps are shipped from the factory ready for installation and use.
Hold the pump in storage if the pump station is not complete.
If storage is necessary, the pump should remain in its shipping
container. It should be stored in a clean, dry temperature-stable
environment where the pump and its container are covered to
protect it from water, dirt, vibration, etc. The cord ends must be
protected against moisture.
Uninstalled pumps that are idle for greater than three months
should have impellers manually rotated once a month to lubricate
the seals.
Pump System Components
Float Switches
Automatic Models
Automatic pumps come with two cords—one to the float switch
and the other to the pump motor. The switch cord has a series
(piggyback) plug enabling the pump motor cord to be plugged
into the back of it. The purpose of this design is to allow temporary
manual operation of the pump.
For manual operation, or in the event of switch failure, the pump
cord can be separated and plugged into the electrical outlet,
directly bypassing the switch. Refer to Piggyback Switch
Operation on page 5.
Switchless (Manual) Models
Manual pumps with no switch may be operated by directly
plugging into an approved electrical outlet. To prevent excessive
seal wear and overheating, pumps should not be run dry for
extended periods of time. If manual models are to be used with an
optional control device, follow the instructions provided with the
control and make power connections per those instructions.
Power and Control Cords
Do not remove cord and strain relief, and do not connect
conduit to pump.
Thepower and controlcords cannotbe spliced; a junction box may
be used.
IMPORTANT: Each cord has a green lead. This is the ground wire
and must be grounded properly per NEC®and/or local codes.
Pump Design
Liberty Pumps provides an integral anti-airlock hole in the volute
housing of submersible pumps. Airlock occurs when air gets
trappedin thevolute/impellerarea ofthepumpandcannotescape
due to the water column above the check valve on the discharge
line. When the basin fills with water and the pump is called to
activate, the impeller spins in this pocket of air and cannot prime.
An anti-airlock hole allows this trapped air to escape, allowing the
pump to prime and start pumping.
A small spray of water from this hole is normal while pump is
running. Bleeding off the air could take from several seconds to
more than a minute once the pump starts.
Preparation
A sump basin cover is required for safety and to prevent foreign
objects from entering the basin.
Prepare Existing Sump [Basin]
Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
If replacing a previously installed pump, prepare the basin by
removing the old pump. Separate the discharge pipe at either the
check valve or at the union. If neither a check valve nor a union is
partofthe existing discharge pipe,cutthe pipe withahacksaw and
removethe pump.Acheck valveandoptional union will need tobe
installed at this cut.
Clean any debris from the basin. Inspect all remaining equipment
in the basin including piping, valves, and electrical junction boxes
(if present) and repair or replace as appropriate.
If the basin is not already enclosed on the bottom, provide a hard
level bottom of bricks or concrete. Do not place the pump directly
onearth,gravel,ordebrissincethiscancauseexcessivewear ofthe
impeller and possible jamming. “The Brick” (Liberty Pumps
#4445000) is a pre-molded stable platform designed to fit the
submersible pump. It raises the pump 2-1/2” off the bottom of the
basin, reducing the potential for jamming from rocks and debris.
Contact a local distributor to order.
RISK OF ELECTRIC SHOCK
RISK OF ELECTRIC SHOCK
RISK OF FIRE

7387000F Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 5 | EN
Prepare New Sump [Basin]
Excavation
Excavate the hole as small as possible, with a minimum
recommended 8” diametrical clearance around the tank. Never
placethe basindirectlyin contactwith rocksor othersharpobjects.
Place only fine, 1/8” to 3/4” pea gravel or 1/8” to 1/2” washed,
crushedstone asbeddingbetweenthe basinand thehole walls.Do
not use sand or native soil as backfill. Properly compact
underneaththebasin toprovide asolid, levelbase thatcan support
the weight of the filled basin.
Inlet Connection & Initial Backfill
Use only fine, 1/8” to 3/4” pea gravel or 1/8” to 1/2” washed,
crushed stone around the bottom of the basin to hold it in place.
Do not use sand or native soil as backfill.
Make the inlet connection as required per basin.
Final Backfill
Keep large rocks, clods, and foreign objects out of the backfill
material. Only fine, 1/4” to 3/4” pea gravel, or 1/8” to 1/2” washed,
crushed stone is recommended. Do not use sand or native soil as
backfill. Mound the backfill slightly and allow for natural settling.
Provide access to the basin cover for maintenance andservice.
Compaction of backfill materials must be adequate to ensure the
support of the tank, and to prevent movement or settlement.
Material Usage
Use of this pump in high temperature water necessitates that
accessories be rated for high temperature use as well. The
following table includes a short list of accessories and materials to
avoid, and recommended alternatives. This list is not intended to
be all-inclusive, and consideration should be given to the
temperature rating of all materials that will come in contact with
high temperature water.
Anti-Airlock
To speed or assist with air bleed in
the event of airlock, the addition of
a 1/8” hole in the discharge pipe is
recommended. This hole should be
no more than 1/8” diameter and
drilled low on the pipe—just above
the threaded connection to the
pump discharge. Refer to figure.
Installation
All installation and maintenance of pumps, controls,
protection devices, and general wiring shall be done by
qualified personnel.
All electrical and safety practices shall be in accordance with
the National Electrical Code®, the Occupational Safety and
Health Administration, or applicable local codes and
ordinances.
Typical Installation
This is a recommended installation only. Variations may apply.
Pump
Record information from pump nameplate onto cover of these
instructions. Complete a visual inspection before lowering into
basin.
Place pump in basin being sure any mounting interface (i.e., “The
Brick” platform, torque stop) is engaged correctly.
Models with wide-angle float switches must have adequate
clearance to side wall of basin with free, unobstructed movement
throughout its complete travel and must not contact the pump,
piping, or other objects.
Piggyback Switch Operation
IMPORTANT: Verify breaker is turned off before plugging in the
switch.
Automatic models: Plug the piggyback switch into the receptacle.
The receptacle must be wired to an appropriately sized breaker.
Plug the pump into the piggyback receptacle. Install the cable
clamp (if supplied) for strain relief.
Pipe Control / Alarm
Floats Sump / Basin
Unacceptable PVC, CPVC, polyethylene
tube
Standard pump,
control, and
alarm floats
Polyethylene,
fiberglass
Acceptable Steel, copper
High
temperature
pump, control,
and alarm floats
Concrete,
steel
Drill 1/8” anti-
airlock hole into
DISCHARGE PIPE
Discharge pipe
RISK OF ELECTRIC SHOCK
Union Check
Valve
Ball
Valve
Discharge
Inlet
Temporary Manua
l
Operation
NormalNO!

6 | EN Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 7387000F
Automatic Pump Direct Wiring
If a pump will be wired directly into a control device or junction
box, and it is necessary to remove the plug, a certified electrician
shall complete the wiring in accordance with the National Electric
Code and applicable local codes. See figure for direct wire
installation of automatic pumps.
Discharge
Make all discharge connections. A union should be installed just
above the cover to facilitate pump removal if necessary. A check
valve is required to prevent the backflow of liquid after each
pumping cycle. A gate valve should follow the check valve to allow
periodic cleaning of the check valve or removal of the pump. The
remainder of the discharge line should be as short as possible with
a minimum number of turns to minimize friction head loss. Do not
reducethedischarge to belowthatwhichis provided on the pump.
Larger pipe sizes may be required to eliminate friction head loss
over long runs. Contact Liberty Pumps or other qualified person if
questions arise regarding proper pipe size and flow rates.
Vent
Vent basin in accordance with applicable plumbing codes.
Operation
Energizing the control panel or breaker for the first time is
potentially dangerous. Licensed electrical personnel should
be present when the panel or breaker is energized for the first
time. If faults caused by damage or poor installation practices
have not been detected, serious damage, injury or death can
result when power is applied.
Starting System
Note: These pumps come equipped with an air bleed hole to help
prevent air lock. A small spray of water from this hole is normal
while pump is running.
1. Verify all plumbing components are installed correctly and
functional. Verify all valves are open and ready for pump use.
2. Double check all wire connections. Re-tighten all factory and
field connections.
3. Ensure pump has no obstructions.
4. With all electrical and mechanical connections complete and
secure, turn on power to pump.
5. Verify operation of the pump and floats.
6. Run several cycles of water through the system to verify
correct control operation for the installation.
Be certain to complete adequate testing, especially on systems
with multiple pumps or custom control configurations.
Maintenance and Troubleshooting
Accidental contact with electrically live parts, items, fluid, or
water can cause serious injury or death.
Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
Wear adequate Personal Protective Equipment when working
on pumps or piping that have been exposed to wastewater.
Sump and sewage pumps often handle materials that can
transmit illness or disease upon contact with skin and other
tissues.
Maintenance
As the motor is oil-filled, no lubrication or other maintenance is
required.
In the event the pump becomes clogged, the inlet screen can be
removed to gain access to the pump impeller. Once the
obstruction is removed, the anti-airlock hole should be cleaned.
To keep the pump/pump system operating smoothly,perform the
following routine checks:
Monthly
1. Pour enough water into the sump to activate the pump when
not normally in use to verify proper function.
2. Pumps that are idle in a wet basin must be removed—do not
store pump in wet basin.
Quarterly
1. Check pump for corrosion and wear.
2. Check for free and unobstructed float switch operation and
float switch condition. The float must be able to move freely
through its complete travel without any restrictions.
3. Inspect for proper check valve operation.
4. Check that the pit is free from accumulated debris, rocks or
other objects that may potentially jam the pump.
Annually
1. Inspect and clean basin. Replace any defective components.
RISK OF SERIOUS INJURY OR DEATH
Ground
Black
Junction Box
Power
Supply
Float
Switch Pump
Green
Black
White
Green
Black
WhiteWhite
RISK OF ELECTRIC SHOCK
RISK OF SERIOUS INJURY OR DEATH

7387000F Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 7 | EN
Troubleshooting
Refer to Table 1 for troubleshooting guidance.
No repair work shall be carried out during the warranty period
without prior factory approval. To do so may void the warranty.
Liberty Pumps, Inc. assumes no responsibility for damage or injury
due to disassembly in the field. Disassembly, other than an
authorized repair facility approved by Liberty Pumps or its
authorized service centers, automatically voids warranty.
Table 1. Troubleshooting Matrix
Problem Possible Cause Corrective Action
Pump does not start.
Tripped circuit breaker, tripped GFCI, blown fuse,
or other interruption of power.
Reset tripped circuit breaker, reset GFCI, replace blown
fuse with properly sized fuse, check that the unit is
securely plugged in, investigate power interruption.
Improper voltage. Have an electrician check all wiring for proper
connections and adequate voltage and capacity.
Defective motor. Consult Liberty Pumps.
Low line voltage. Check voltage. If under 108 V, check wiring size.
Remove extension cord, or use with heavier gauge.
Float switch unable to move to pump ON
position due to interference in basin or other
obstruction.
Position the pump or float switch so that it has adequate
clearance for free movement.
Insufficient liquid level. Verify the liquid level is allowed to rise enough to activate
float switch.
Defective float switch. Replace float switch.
Obstructed impeller or volute. Remove obstruction.
Loose wiring connections. Check and tighten all connections.
Pump runs or hums, but
does not pump.
Discharge line blocked or restricted. Checkthedischargelineforforeign material,includingice
if the discharge line passes through or into cold areas.
Check valve stuck closed or installed backward. Remove check valve and examine for freedom of
operation and proper installation.
Gate or ball valve closed. Open gate or ball valve.
Total head beyond pump's capability. Route piping to a lower level. If not possible, a larger
pump may be required. Consult Liberty Pumps.
Obstructed impeller or volute; clogged inlet
screen. Remove obstruction.
Pump airlocked. Turn pump off and let set for several minutes, then restart.
Clear anti-airlock hole.
Pump runs periodically
when fixtures are not in
use.
Check valve not installed, stuck open, or leaking. Install check valve; remove check valve and examine for
freedom of operation and proper installation.
Fixtures leaking. Repair fixtures as required to eliminate leakage.
Pumpruns,butdoesnot
turn off.
Pump airlocked. Turn pump off and let set for several minutes, then restart.
Float switch unable to move to pump OFF
positionduetointerferencewiththesideofbasin
or other obstruction.
Position the pump or float switch so that it has adequate
clearance for free movement.
Defective float switch. Replace float switch.

8 | EN Copyright © Liberty Pumps, Inc. 2023 All rights reserved. 7387000F
Warranty
Liberty Pumps Wholesale Products Limited Warranty
Liberty Pumps, Inc. warrants that Liberty Pumps wholesale products are free from all factory defects in material and workmanship for a
period of three (3) years from the date of purchase (excluding* batteries and “Commercial Series” models). The date of purchase shall be
determined by a dated sales receipt noting the model and serial number of the pump. The dated sales receipt must accompany the
returned pump if the date of return is more than three years from the date of manufacture noted on the pump nameplate.
The manufacturer's sole obligation under this Warranty shall be limited to the repair or replacement of any parts found by the
manufacturer to be defective, provided the part or assembly is returned freight prepaid to the manufacturer or its authorized service
center, and provided that none of the following warranty-voiding characteristics are evident:
The manufacturer shall not be liable under this Warranty if the product has not been properly installed, operated, or maintained per
manufacturer instructions; if it has been disassembled, modified, abused, or tampered with; if the electrical cord has been cut, damaged,
or spliced; if the pump discharge has been reduced in size; if the pump has been used in water temperatures above the advertised rating;
if the pump has been used in water containing sand, lime, cement, gravel, or other abrasives; if the product has been used to pump
chemicals,grease, or hydrocarbons;if anon-submersiblemotorhasbeensubjected tomoisture;or ifthelabel bearing themodeland serial
number has been removed.
Liberty Pumps, Inc. shall not be liable for any loss, damage, or expenses resulting from installation or use of its products, or for indirect,
incidental, and consequential damages, including costs of removal, reinstallation or transportation.
There is no other express warranty. All implied warranties, including those of merchantability and fitness for a particular purpose, are
limited to three years from the date of purchase. This Warranty contains the exclusive remedy of the purchaser, and, where permitted,
liability for consequential or incidental damages under any and all warranties are excluded.
*Liberty Pumps, Inc. warrants StormCell®batteries for 1 year from date of purchase, and warrants that pumps of its Commercial Series are
free from all factory defects in material and workmanship for a period of 18 months from the date of installation or 24 months from the
date of manufacture, whichever occurs first, and provided that such products are used in compliance with their intended applications as
set forth in the technical specifications and manuals.
Pump cycles too
frequently.
Improper float switch setting. Adjust float switch setting.
Check valve not installed, stuck open, or leaking. Install check valve; remove check valve and examine for
freedom of operation and proper installation.
Pump does not deliver
proper capacity.
Discharge partially closed or clogged. Checkthe dischargelinefor foreignmaterial, includingice
if the discharge line passes through or into cold areas.
Check valve partially clogged. Raise liquid level up and down to clear; remove check
valve to remove obstruction.
Total head beyond pump's capability. Route discharge piping to a lower level. If not possible, a
larger pump may be required. Consult Liberty Pumps.
Low liquid level. Check liquid level.
Obstruction in pump or piping. Remove obstruction.
Repeated tripping.
Circuit protection underrated. Check rating and replace with proper size.
Other appliance on same circuit. Pump requires separate circuit.
Pump connected to an extensioncord orwiringis
inadequate or compromised. Have an electrician check for proper wiring.
Improper voltage. Have an electrician check all wiring for proper
connections and adequate voltage and capacity.
Obstruction in pump. Remove obstruction.
Foreign matter buildup. Clean motor housing.
Defective motor. Consult Liberty Pumps.
Table 1. Troubleshooting Matrix (continued)
Problem Possible Cause Corrective Action