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4617000L

Copyright © Liberty Pumps, Inc. 2019 All rights reserved.

5 | EN

 Cords

LowPro systems come with two cords—one to the float switch and 

the other to the pump motor. The float switch cord has a 

piggyback (series) plug enabling the pump motor cord to be 

plugged into the back of it. Both cords must be connected in 

series for automatic operation.

The purpose of this design is to allow temporary manual 

operation of the pump. For manual operation, or in the event of a 

float switch failure, the pump cord can be separated and plugged 

into the electrical outlet, directly bypassing the switch.

 Use and Care

A routine of regular cleaning will keep the LowPro in good 

working order. The exterior of the unit may be cleaned with a 

damp cloth and normal household cleaners. Never spray or dump 

water or chemicals directly on the unit.

Considerations

The LowPro41LP can be installed freestanding or built-in,

 

concealing the pump compartment and piping. The platform 

section of the tank is sized to fit flush with an elevated floor 

framed with 2" x 6" material.

Access to pump compartment 

is required on built-in installations. 

To accommodate future service, it is important to allow access to 

the pump and switch cover when the unit is being framed-in with 

a wall behind the water closet. This can be accomplished by 

framing this portion of the tank into a closet, utility, or other 

accessible room.

If installing walls or floor joists,

 use caution to ensure that nails, 

screws, or other sharp objects do not puncture the tank when 

framing.

For addition of a sink or shower,

 a rubber pipe seal is included 

that accepts 2" schedule 40 PVC piping. Showers must be elevated 

to allow gravity flow to unit.

If connecting a washing machine

, the preferred method is to 

drain the washer into a tub sink with a lint sock prior to the 

LowPro. This requires periodically removing the access cover to 

clean lint and debris from the switch.

The tank installation location 

must be level.

LowPro tank contains three 

textured areas

 acceptable 

for installing rubber pipe 

grommet. 

Installation 

outside of these areas 

may result in damage to 

internal components.

Dimensional Data

Installation

1.

Position the tank in its desired location and ensure that it is 

level. 
Use hydraulic cement or similar material for leveling the floor 

if necessary.

2.

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.

3.

An inlet for a 2" PVC drain line from additional fixtures (i.e., 

sink or shower) may be installed using the supplied rubber 

pipe grommet.
Determine the best location for the drain line to enter the 

tank—making sure it is within the marked textured areas of 

the pump chamber. 

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.

4.

Drill a 3" diameter hole and insert the provided grommet. 

Slide the 2" PVC drain line into the pipe grommet, lubricating 

the pipe if necessary to ease installation.

5.

Install a 2" PVC pipe to the discharge connection on the 

cover.

Threaded connections at tank require hand-tightening only. 

Use thread seal tape to seal pipe threads.

Temporary Manual

Operation

 

YES!

NO!

Do Not Drill 
Below This Line

Acceptable Rubber Pipe Grommet Locations

TOP VIEW

14-5/8”

[37 cm]

29-1/2”

[75 cm]

24-1/2”

[62 cm]

12-1/4”

[31 cm]

17”

[43 cm]

12-1/2”

[30.5 cm]

42”

[106.7 cm]

5”

[12.7 cm]

3-3/4”

[9.5 cm]

7”

[17.8 cm]

5-1/4”

[13.3 cm]

SIDE VIEW

7”

[17.8 cm]

Summary of Contents for LowPro41LP

Page 1: ...Pumps com Copyright Liberty Pumps Inc 2019 All rights reserved 4617000L This product supplied with a CSA Certified pump LowPro Series Low Profile Sewage System Models LowPro41LP 4 10 hp 115V LowPro51L...

Page 2: ...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...

Page 3: ...d 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...

Page 4: ...tallation area is not complete If storage is necessary the LowPro system should remain in its shipping container It should be stored in a clean dry temperature stable environment where the pump system...

Page 5: ...a washing machine the preferred method is to drain the washer into a tub sink with a lint sock prior to the LowPro This requires periodically removing the access cover to clean lint and debris from th...

Page 6: ...nto 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 t...

Page 7: ...sin 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 t...

Page 8: ...e 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 t...

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