Installation - Liberty Pumps 2448 Serie Manuel D'installation

Pre-Installation Checklist
1. Inspect the system upon arrival to ensure that there is
no shipping damage. Pay careful attention to the
condition of the fiberglass basin, control floats, pump
guide rail brackets, and plugger box. Notify the carrier
immediately if there is any damage.
2. Read all instructions and familiarize yourself with the
unit's operation prior to proceeding with the

installation.

3. A separate 115V branch circuit is required for the alarm.
Do not split the incoming pump power circuit to power
the control circuit.
4. All electrical connections must be tested to ensure that
a proper ground has been established.
Installation
A. Excavation: Excavate the hole for the basin as small as
possible, with a minimum base diameter of 38". Never
place the basin in direct contact with rocks or other
sharp objects. Place enough fine, 1/8" to 3/4" pea
gravel or 1/8" to 1/2" washed, crushed stone at the
bottom of the excavation to create a minimum of 12
inches stone or gravel after compaction. 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. If a concrete
pad will be used under the basin, the compacted stone
sub-base can be reduced to 6 inches.
B. Connections and Backfill: Pour enough concrete over
and around the anti-flotation flange to anchor the
basin and prevent upward movement. Connect 1-1/4"
schedule 80 PVC pipe to the pump discharge. Do not
reduce the size of the discharge piping, and do not
increase the discharge piping to larger than 2". The
remainder of the discharge line should be as short as
possible with a minimum number of turns. Connect the
inlet line to the inlet hub. Connect the electrical
coupling to 2" electrical conduit and run the power and
float cords through the conduit to the plugger box. The
remaining backfill should be only fine, 1/8" to 3/4" pea
gravel or 1/8" to 1/2" washed, crushed stone. Do not
use sand or native soil as backfill. Other backfill options
may be available, consult Liberty Pumps for special
instructions relative to your situation.
NOTICE
 Do not exert heavy pressure or run heavy equipment
on the backfill material as this could cause the tank to
collapse.
7386000K
C. Venting: The fiberglass basin provided with the
Copyright © Liberty Pumps, Inc. 2018 All rights reserved.
2448-Series must be completely sealed and properly
vented in order to meet health and plumbing code
requirements. The 2448-Series is designed to be vented
through the inlet to an existing building vent stack. In
order to accomplish this, there must be no traps
between the 2448-Series inlet and the nearest building
vent stack connection.
See Figure 1 for an example. If this is not possible or
desirable for the application, a vent flange or grommet
can be installed in a hole cut into the solid fiberglass
cover.
VENT
WATER
CLOSET
Figure 1. Inlet Venting
SYSTEM
DISCHARGE
– 5 –