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Prepare New Sump [Basin]
Excavation
Excavate the hole as small as possible, with a minimum
recommended 8" diametrical clearance around the tank. Never
place the basin directly in contact with rocks or other sharp objects.
Place only fine, 1/8" to 3/4" pea gravel or 1/8" to 1/2" washed,
crushed stone as bedding between the basin and the hole walls. Do
not use sand or native soil as backfill. Properly compact
underneath the basin to provide a solid, level base that can 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 and service.
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.
Pipe
PVC, CPVC,
Unacceptable
polyethylene
tube
Acceptable
Steel, copper
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.
7387000F
Control / Alarm
Sump /
Floats
Basin
Standard pump,
Polyethylene,
control, and
fiberglass
alarm floats
High
temperature
Concrete,
pump, control,
steel
and alarm floats
Discharge pipe
Drill 1/8" anti-
airlock hole into
DISCHARGE PIPE
Copyright © Liberty Pumps, Inc. 2023 All rights reserved.
Installation
RISK OF ELECTRIC SHOCK
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
Health Administration, or applicable local codes and
ordinances.
Typical Installation
This is a recommended installation only. Variations may apply.
Inlet
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.
NO!
®
, the Occupational Safety and
Discharge
Union
Check
Ball
Valve
Valve
Temporary Manual
Normal
Operation
5 | EN
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