Installation Sheet

7034000M Copyright © Liberty Pumps, Inc. 2019 All rights reserved. 5 | EN
Storage Before Use
 Protect the power and control cords from the environment.
Unprotected power and control (switch) cords can allow
water to wick through ends into pump or switch housings,
causing surroundings to become energized.
 At no time shall the pump be stored within an incomplete wet
basin. The pump shall not be placed into the basin until it can
be fully operational.
 Do not allow the pump to freeze.
Pumps are shipped from the factory ready for installation and use.
Hold the pump in storage if the pump station is not complete.
If storage is necessary, the pump should remain in its shipping
container. It should be stored in a warehouse or storage shed that
has a clean, dry temperature-stable environment where the pump
and its container are covered to protect it from water, dirt,
vibration, etc. The cord ends must be protected against moisture.
Uninstalled pumps that are idle for greater than three months
should have impellers manually rotated once a month to lubricate
the seals.
Installed pumps that are idle for greater than one month should
have impellers manually operated through the breaker panel once
a month to lubricate the seals. For automatic models, turn off the
breaker, unplug the piggyback switch, and plug the pump directly
into the wall socket. Turn the breaker on for 30 seconds, then turn
the breaker off. Plug the piggyback switch back in. Refer to
Figure 1 on page 8.
Pump Design
Some LE and LEH-Series pumps come equipped with an air bleed
hole to help prevent airlock. A small spray of water from this hole
is normal while pump is running.
Pump System Components
Control Panel
Manual models (“M” suffix) and 3-phase models require a
separate, approved pump control device or panel for automatic
operation. Operation will be according to the control panel
selected. Refer to separate manufacturer’s instructions supplied
with the unit. Verify the electrical specifications for the control
panel properly match those of the pump. 3-phase models require
overload elements selected or adjusted in accordance with the
control or panel instructions.
Mounting, installation, and wiring connections are specific to the
control panel used. Refer to the manufacturer’s instructions
supplied with the unit.
IMPORTANT: When connecting a new pump to an existing
control panel, verify the panel is correctly sized and equipped for
the pump.
Control panels designed for use with specific pumps available
from Liberty Pumps can be found at http://
www.LibertyPumps.com/Portals/0/Files/panel_selection_guide.pdf
or contact Liberty Pumps.
Float Switches
 Single-phase 208/230V pumps shall only be operated
without the float switch by using the circuit breaker or panel
disconnect.
Automatic Models
All LE-Series automatic models (“A” suffix) come factory-
equipped with a float switch mounted to the pump. These models
come with two cords—one to the float switch and the other to the
pump motor. The switch cord has a series (piggyback) plug
enabling the pump motor cord to be plugged into the back of it.
The purpose of this design is to allow temporary manual
operation of the pump.
For manual operation, or in the event of float switch failure, the
pump cord can be separated and plugged into the electrical
outlet, directly bypassing the switch. Refer to Piggyback Switch
Operation on page 8.
If using a differential other than the factory setting, verify that
when the pump turns off, the minimum fluid level left in the basin
is per Table 1 so the impeller remains submerged. Other pumping
differentials may be obtained by tethering the float switch cord to
the discharge pipe.
Note: With wide-angle floats, a minimum cord length of 3-1/2”
from the tether point to the top surface of the float is required for
proper float switch operation.
Note: If the factory-mounted float is removed from the pump for
relocation to the discharge pipe, replace and tighten all pump
hardware.
Switchless (Manual) Models
Manual pumps with no float switch are intended to be run using
an approved liquid level control or approved motor control with
correct rating that matches motor input in full load amperes.
Regardless of the control type, verify that when the pump shuts
off, the minimum fluid level left in the basin is per Table 1 so the
impeller remains submerged.
IMPORTANT: Manual pumps factory constructed with a power
cord with no male attachment plug must use an approved motor
control panel. Do not wire a switch in series with the pump power
cord.
Automatic operation with optional control devices: if the
pump(s) are to be operated by either a simplex or duplex control
panel, or other optional control device, follow the manufacturer’s
instructions provided with the control panel for power
connections.
RISK OF ELECTRIC SHOCK
RISK OF ELECTRIC SHOCK