Preparation - Liberty Pumps 331 Mode D'emploi

Preparation

Adapters are furnished with the pump. The inlet and discharge are
threaded with a ¾" NPT. Standard water pipe can be threaded
directly into the casting. If a garden or other hose is to be used,
the brass fittings must be installed. Use Teflon tape (4 wraps max)
or sealant on threaded fittings to ensure proper seal. Liberty
Pumps recommends that the swivel fitting be installed on the
front of the pump.
To reduce the possibility of hose collapse, use a high quality hose,
such as PEX or washing machine supply hose, on the suction line
(an ordinary garden hose may collapse under suction pressure
and should not be used).
A strainer is furnished and should be used if pumping from a
creek, pond, or source where foreign objects may be sucked into
the pump. The strainer helps prevent solids from entering the inlet
line.
The pump must be filled with water before operating. Do not run
pump dry. Running the pump dry will cause damage to the shaft
seal.
This unit is not waterproof or weatherproof and should not be
used in showers, saunas, or other potentially wet locations. The
motor is designed for use in a clean, dry location.
Grounded
Power Cord
Discharge Connector
Brass male hose to male
– 4 –
Power Switch
located on back
pipe
Should not be longer than needed
Use a high quality hose to prevent collapsing.
Figure 2. Transfer Pump Components
Copyright © Liberty Pumps, Inc. 2018. All rights reserved.
The pump draws fresh air in from the back and blows warm air out
the sides; do not block air vents. Ambient temperatures around
the motor should not exceed 104°F (40°C) in order to adequately
cool the motor. The motor is equipped with a thermal protector. If
the motor temperature rises, the unit will automatically turn off.
To reset the thermal switch, simply unplug the unit or turn the
power switch from on to off and allow the unit to cool. The switch
must be in the off position in order for it to cool down. The water
temperature should not exceed 140°F.
The Model 331 pump has been fitted with a 20 ft power cord. To
avoid the risk of electric shock, do not use an extension cord
unless absolutely necessary. Follow the Extension Cord Length
table (Table 1) for proper wire gauge for a 3-wire, grounding-type
extension cord.
Length [ft]
25
50
100
Prime Plug
Add water here prior to
pump operation
Suction Hose
(not included)
(15' maximum suction lift).
Table 1. Extension Cord Length
Wire Size [AWG]
Inlet Connector
Brass female hose
Hose Strainer
Plastic male
16
16
14
7327000F