In-Ground Basin Installation; Installation And Connections - Liberty Pumps Pro370 Serie Manual De Instalación

Nameplate
Cord entry
Access cover
Figure 8. 700-Series Cover

In-Ground Basin Installation

ProVore and Pro-Series basins can be installed in both indoor and
outdoor applications. The 700-Series basins are not suitable for
outdoor applications and can only be installed indoors.
A. 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. It is recommended that the top lip of the basin be level
with the finished floor.
B. Initial Backfill: Only fine, 1/8" to 3/4" pea gravel or 1/8" to
1/2" washed, crushed stone should be used 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
for particular basin.
C. Inlet Connection: Pro-Series basins have a 4" inlet molded
to the side of the tank. This inlet is sized to accept a 4"
no-hub type coupling. 700-Series basins use a hub with a 4"
seal for inlet connection.
Connect the gravity drainage line from the fixtures to this
hub.
D. Final Backfill: Large rocks, clods, and foreign objects should
be kept 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.
NOTICE
 Do not exert heavy pressure or run heavy equipment on the
backfill material as this could cause the tank to collapse.
– 6 –

Installation and Connections

NOTICE
Discharge
 Side discharge not available for 700-Series basins.
 700-Series are not suitable for outdoor applications.
Vent
 Do not increase 702/PRG system discharge pipe size
E.
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above 2" as adequate flow rates may not be achieved for
proper operation. Discharge sizes may be reduced to 1-1/4".
Contact Liberty Pumps with questions regarding proper pipe
sizes and flow rates.
Discharge: Using an adapter, connect the discharge pipe to
the threaded 2" or 3" port provided on the cover (or the 2"
PVC nipple used on side discharge models).
IMPORTANT: Do not reduce the discharge pipe size below
that which is provided on the pump. Sewage pumps
discharge size should not be smaller than 2". In some
applications, it may be necessary to increase the pipe size to
reduce friction losses. Contact Liberty Pumps with questions
regarding proper pipe sizes and flow rates.
Install the remaining discharge line. In vertical discharge
applications, a union should be installed just above the cover
to facilitate pump removal if necessary (side discharge
applications are equipped with an in-basin union).
In both vertical and side discharge models, a check valve is
recommended after the union to prevent the backflow of
liquid after each pumping cycle. A gate or ball valve should
follow the check valve to allow periodic cleaning of the check
valve or removal of the pump. The remainder of the discharge
line should be as short as possible with a minimum number
of turns, to minimize friction head loss. Do not restrict the
discharge below 2" in sewage applications. Larger pipe sizes
may be required to eliminate friction head loss over long
runs. Contact Liberty Pumps or other qualified person if there
are questions regarding proper pipe size and flow rates.
Figure 9 shows a typical outdoor installation. Variations may
apply to actual installation.
Alarm
Vent
(optional)
Union
Figure 9. Typical Installation (Pro380-Series shown)
Check Valve Ball Valve
Discharge
Use No-hub Style
Connector 4" Inlet Pipe
7225000I