Liberty Pumps Sump Pump Combo PC237-441 User manual

Installer: Manual must
remain with owner/operator. Prior to installation, record information
from pump nameplate for future reference:
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 4428000G
Copyright © Liberty Pumps, Inc. 2021 All rights reserved.
PC-Series
Sump Pump Combo Series
Models
441-Series 442-Series
PC237-441 PC237-442-10A
PC237-441-10A PC237-442-10A-EYE
PC257-441 PC257-442-10A
PC257-441-10A PC257-442-10A-EYE
PC457-441 PC457-442-10A
PC457-441-10A PC457-442-10A-EYE
PCS37-441 PCS37-442-10A
PCS37-441-10A PCS37-442-10A-EYE
PCS37-P-441 PCS37-P-442-10A
PCS37-P-441-10A PCS37-P-442-10A-EYE
PC237-441-10A shown

2 | EN Copyright © Liberty Pumps, Inc. 2021 All rights reserved. 4428000G
Contents
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 | EN
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 | EN
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Charger Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Maintenance and Troubleshooting . . . . . . . . . . . . . . . 4 | EN
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | 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.
Do not remove cord and strain relief, and do not connect
conduit to pump.
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.
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.
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.
Unprotectedpowerandcontrol(switch) cords can allow water
to wick through ends into pump or switch housings, causing
surroundings to become energized.
Do not use metal or any other electrical conducting material
to raise the float or contact anything inside an electrically live
sump pit.
Use PVC cement in a well-ventilated area away from fire or
flames. Follow the PVC cement and primer manufacturer’s
instructions.
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.
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.
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.
These pumps are not to be installed in locations classified as
hazardous in accordance with the National Electric Code®,
ANSI/NFPA 70.
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
instruction intended to minimize potential
risk of electric shock.
This safety alert symbol identifies risk of fire.
It is accompanied with an instruction
intended 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
pump system. Follow all the safety instructions
in manual(s) and on the pump. Failure to do
so could result in serious injury or death.
RISK OF ELECTRIC SHOCK
RISK OF FIRE

4428000G Copyright © Liberty Pumps, Inc. 2021 All rights reserved. 3 | EN
Do not use to pump flammable or explosive fluids such as
gasoline, fuel oil, kerosene, etc. Do not use in flammable and/
or explosive atmosphere. Sparks could ignite flammable
liquids.
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.
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.
This product contains chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. www.p65warnings.ca.gov.
Battery voltage can cause serious or fatal electrical shock.
Follow the battery manufacturer’s recommendations for
maintenance and safe use of battery before using charger.
Explosive gases develop during normal battery operation.
Keep battery in a well ventilated area, away from sparks and
open flames (such as pilot light). Never smoke in vicinity of
battery. Batteries generate flammable gases both charging
and discharging, which can explode or catch fire if ignited.
Battery acid is corrosive. Wear adequate Personal Protective
Equipment when working with the battery.
Never allow the battery DC terminals to touch each other. This
can cause severe burns and start a fire. For added safety,
protect the battery in provided battery box.
Only use 12 Volt lead acid batteries with this backup system.
Use of batteries with higher or lower output voltages can
damage the backup system, leak acid or explode.
A check valve is required in the primary sump pump
discharge pipe to prevent water from recirculating back into
the pit.
Pump clear water only with this pump.
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 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 use pumps with fluid over 104°F (40°C). Operating the
pump in fluid above this temperature can overheat the pump,
resulting in pump failure.
Do not run dry.
Be prepared for water to leak from the coupling or piping
when disassembling or cutting the discharge pipe. Protect
system components, tools, and supplies from getting wet. Dry
any work areas that get wet immediately.
Do not position the pump float directly under the inlet from
drain tile or in the direct path of any incoming water.
Do not expose pump or discharge to freezing temperatures.
Maximum vertical pumping distance is 18 feet (5.5 m) for 441
system; 21 feet (6.4 m) for 442 system.
If a Carbon Monoxide (CO) sensor is installed, it must be at
least 15 feet away from the battery charger in order to avoid
nuisance CO alarms. Refer to the CO detector’s installation
guidelines for more information.
Locate charger as far away from battery as DC cables permit.
Never place charger directly above battery being charged as
gases from battery will corrode and damage charger.
Never allow battery acid to drip on charger when reading
gravity or filling battery.
Do not operate charger if it has received a sharp blow, been
dropped, or otherwise damaged in any way; take it to a
qualified service professional.
Do not expose charger to rain, snow, or liquids.
Use charger only for charging a 12V lead acid battery.
12V marine-type deep cycle battery recommended (Group 27
or Group 31 AGM or Wet Cell compatible).
Never charge a frozen battery.
Never charge lithium ion batteries with charger.
A Group 27 battery will provide the same performance as a
Group 31 battery, but for a shorter length of time.
To protect battery box from chipping and gouging, do not let
the battery box sit on a concrete floor. Install the battery box
on a shelf or a protective pad (plywood, 2x4s, etc.).
Always install the battery box in a dry location that is
protected from flooding.
Use of a standard automobile battery with this charger is not
recommendedas anautomobilebattery may requirecharging
after only 1–2 hours of continuous use and the repeated
charging cycles may cause early plate failure in the battery.
Preparation
Before installation, read the following 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.
The PC-Series includes a primary sump pump pre-assembled with
a DC powered battery back-up pump. An exploded view of
PC-Series combination systems for a 441 or 442 DC back-up pump
system is shown on next page.
RISK OF SERIOUS INJURY OR DEATH
BATTERY HAZARDS

4 | EN Copyright © Liberty Pumps, Inc. 2021 All rights reserved. 4428000G
Check valves come pre-installed on both the primary and back-up
pumps. Refer to the supplied installation manual for further
instructions regarding the battery back-up system.
This system should not be installed in a sump pit less than 15” in
diameter. A larger diameter pit is preferred as it allows for longer
pump cycling and reduced switch cycling. The depth of the pit
should be at least 18” above the surface that the pump is resting
on. If the pit is not already enclosed on the bottom, provide a hard
level bottom of bricks or concrete. Do not place the pump directly
on earth, gravel or debris since this can cause excessive wear of the
impeller and possible jamming. “The Brick” (sold by Liberty Pumps,
P/N 4445000) is a pre-molded stable platform designed to fit the
primary submersible pump. It raises the pump 2-1/2” off the
bottom of the pit, reducing the potential for jamming from rocks
and debris (contact a local distributor to order). Remove all debris
from the bottom of the sump pit before installation of the pump. A
sump pit cover is required for safety and to prevent foreign objects
from entering the pit.
Installation
Set the complete system in place by lowering the pump by the
handle on the primary pump. Confirm that both the primary float
switch and the back-up float switch have adequate clearance and
will not hang-up on the pit wall. The float switch must be free to
move throughout its travel, without contacting the pump body,
piping, or other objects.
The uppermost rubber coupling will connect to 1-1/2” PVC pipe.
Tighten clamps to prevent leaking. Do not reduce the discharge
size to less than 1-1/4”, as this will affect pump flow and
performance.
Charger Operation
Refer to supplied 441 or 442 back-up system manual.
System Operation
Refer to supplied 441 or 442 back-up system manual.
Maintenance and Troubleshooting
Refer to supplied 441 or 442 back-up system and pump manual.
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 thedate 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 usedin 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 a
non-submersible motor has been subjected to moisture; or if the
label bearing the model and 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 fromthedate 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.
441 VERTICAL
FLOAT SWITCH
442 SNAP-ON
FLOAT SWITCH
PRIMARY PUMP
(257 SHOWN)
COUPLING
442, WITH
INTEGRATED
CHECK VALVE
441, WITH
INTEGRATED
CHECK VALVE
CHECK VALVE
1-1/2” RUBBER
COUPLING
WITH CLAMPS