Before installation, read the following instructions carefully. Each Liberty pump is individually factory tested to insure proper
performance. Closely following these instructions will eliminate potential operating problems, assuring years of trouble-free service.
Risk of electric shock – The pump power cord is equipped with a grounding conductor and grounding-type 3-prong plug. To
reduce the risk of electric shock, be certain that it is connected only to a 115V properly grounded grounding-type receptacle. All
electrical circuitry should be installed in accordance with the National Electric Code (NEC) and all applicable local codes or
ordinances. These pumps are not to be installed in locations classified as hazardous in accordance with the National
Electric Code, ANSI/NFPA 70.
Installation must be in accordance with the National Electric Code and all applicable local codes.
Installation and servicing is to be conducted by qualified personnel.
Do not use these pumps in water over 140 F.
The Uniform Plumbing Code (UPC) states that sewage systems shall have an audio and visual alarm that signals a malfunction of
the system, to reduce the potential for property damage.
1. Inspect all materials for shipping damage and to ensure that all parts have been received. Contact your dealer with any problems
prior to installation.
2. Read all instructions and familiarize yourself with the unit's operation prior to proceeding with the installation. Read pump
specifications to assure pump has adequate head performance prior to installation - See "Note" under pump specifications.
3. Risk of electric shock. Always disconnect the pump from the power source before handling or making
adjustments. The pump power cord is equipped with a grounding conductor and grounding-type 3-prong plug.
To reduce the risk of electric shock, be certain that the Sumpbox™ unit is connected only to a properly
grounded grounding-type receptacle. This receptacle should be protected by a ground fault circuit interrupter
(GFCI). All electrical circuitry should be installed in accordance with the National Electric Code (NEC) and all
applicable local codes or ordinances. Never remove the ground pin from the plug.
Never remove the ground pin from the plug.
4. Make certain that the outlet is within reach of the power supply cord. Never use an extension cord.
5. The power cords from the LowPro system are equipped
with piggyback plugs and must be connected in series to
operate automatically (see fig. 1).
6. Check to ensure that your power source is adequate to
handle the pump amperage. Pump amperage can be
found on the nameplate and/or the product literature.
Ensure that the electrical supply circuit is equipped with
fuses or breakers of the proper capacity.
7. It is recommended that a separate branch circuit be
installed for the pump. Such a branch circuit should be
sized in accordance with the NEC.
8. Each electrical outlet should be tested to ensure that a
proper ground has been established. A UL listed circuit
analyzer will indicate if the power, neutral, and ground wire
are properly connected.
9. A qualified licensed electrician should install and test all electrical circuits.
10. All plumbing (waste and vent) must be installed to meet local plumbing codes. This unit must be properly vented. Automatic or mechanical plumbing vent devices must not be used. This pump is not to be installed in a location classified as hazardous
in accordance with the NEC, ANSI/NFPA 70.
11. Liquid temperature must not exceed 140F (60C).
12. Always disconnect the pump from the power source prior to removing or servicing.
1. The LowPro is shipped factory assembled; inspect tank, pump and accessories for shipping damage. Contact your dealer with any
problems prior to installation
2. The tank installation location must be level. Position the tank in its final location and ensure that it is level. Use hydraulic cement
or similar material for leveling the floor if necessary.
3. If installing walls or floor joists, use caution to ensure that nails, screws, or other sharp objects do not puncture the tank
when framing.
4. Determine the closest and most readily accessible locations to tie in the discharge and vent lines to existing lines. Take the
necessary measurements and determine what plumbing fittings and pipes are needed.
5. An inlet for a 2" PVC drain line from additional fixtures (i.e. sink or shower) may be installed using the rubber pipe grommet
(supplied). Determine the best location for the drain line to enter the tank making sure it is within the marked textured a reas of the
pump chamber. See fig. 2. Do not drill below or outside of the textured areas. Make sure drain lines have adequate gravity
flow to the system. If a shower is being used, elevate the shower to allow for proper trapping and drainage. Drill a 3" diameter
Fig. 2 Tank contains three textured areas acceptable
for installing rubber pipe grommet.
Installation outside of these areas may result
In damage to internal components.
Fig. 5 Optional orientation of toilet
Do not drill below this line
Fig.3 Typical finished installation
Fig. 4 Side view with elevated shower
hole and insert the grommet. Slide the 2" PVC drain line into the pipe
grommet, lubricating the pipe if necessary to ease installation.
Note: If installing a washing machine, the preferred method would be to
drain washer into a tub sink with a lint sock prior to the LowPro. Also,
periodically remove access cover and clean lint and debris off of switch
6. NOTE: Threaded connections at tank - HAND TIGHTEN ONLY. Use
Teflon tape as a thread sealant. Install a 2" PVC pipe to the connection
labeled "Discharge". Attach the 2” check valve (Fig. 8, item 14) to the
discharge pipe as close to the top of the tank as possible. Make sure
that the arrows on the check valve are pointing up, away from the pump.
Do not reduce the discharge pipe size below 2".
7. Complete the discharge piping to the house waste line using a minimum
number of turns. See "Note" under Pump Specifications for maximum
head performance of the LowPro system.
8. Install a 2" vent pipe into the vent opening on the cover. Connect
the vent pipe to the house vent line or directly to the atmosphere.
Unit must be vented directly to the atmosphere in accordance with
national and local plumbing codes. DO NOT use an automatic or
mechanical vent device.
9. If you are not installing a finished floor above the LowPro tank system,
skip steps 10 through 12, and resume installation at step 13.
10. The rough opening size required for installation using standard 2”X6” floor
joists will vary depending on your actual installation and the orientation of
the tank. The overall rough opening size needed to enclose the entire
LowPro tank is 42” X 24½”.
11. Measure the finished flooring thickness and determine the number of closet
flange spacers (Figure 8, item 17) needed to bring the closet flange up to
the finish floor. See Figure 6.
12. Set the proper number of plastic closet flange spacers (as determined in
step 11) onto the brass closet flange. The foam gasket material on the
spacer(s) must be facing down. The spacer(s) will not be secured to the
closet flange, so use care not to move them during the installation of the
toilet.
13. Install the wax toilet bowl seal ring provided onto the toilet following the
directions included with the toilet. Install the toilet onto the closet flange
following the directions included with the toilet. Hook up the water line to
the toilet. Turn the water on and fill the toilet tank. Test for leaks. Flush
the toilet several times and allow the pump to cycle to ensure proper
operation.
NOTE: The LowPro features an internal jet spray to help break down solids
and reduce jamming. Due to limited water volumes per pump cycle on
systems of this type, care must be taken to avoid flushing extreme amounts
of toilet paper or any reinforced papers, paper towels, sanitary products and
other foreign objects into the LowPro.
Hp 4/10
Volts 115
Phase 1
Full Load Amps 12
Hz 60
Solids-handling 2"
Discharge size 2"
NOTE: The LowPro has a shut-off head
(maximum lift) of 19 feet. Actual maximum
useable head to provide adequate flow is
approximately 17.5 feet and may be less
depending on amount of run and friction loss
factors. Please consult factory for proper
pump sizing.
4. Pump Specifications and Parts List
Refer to the diagram
to adjust the float
switch (5). The
pump should engage
at a waste depth of
approximately 4.0”
and pump down to
around 3.0”. To
adjust the float
switch, remove the
switch access cover
(6) and lift the float
switch (5) out of the
tank. After adjusting
to the lengths
pictured above,
replace the switch by
placing the cord
between the two
bosses. Reattach
the access cover to
the tank.
Fig. 6
Spacer (one each of 1/4" and 1/2" provided.
May be stacked for total of 3/4")
7000 Apple Tree Avenue
Bergen, NY 14416
Phone: (800) 543-2550
Fax: (585) 494-1839
www.libertypumps.com
NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly in the field. Disassembly,
other than at Liberty Pumps or its authorized service centers, automatically voids warranty.
Liberty Pumps, Inc. warrants that pumps of its manufacture are free from all factory defects in material and workmanship
for a period of 3 years from the date of purchase. 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 3 years from the "CODE" (date of manufacture) number noted on the pump nameplate.
The manufacturer's 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; 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, or
water containing sand, lime, cement, gravel or other abrasives; if the product has been used to pump chemicals or
hydrocarbons; if a non-submersible motor has been subjected to excessive moisture; or if the label bearing the serial,
model and code 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 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 partic ular
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.