Liberty Pumps 331 1-2 hp Portable Transfer Pump Installation Guide
- June 12, 2024
- Liberty Pumps
Table of Contents
Liberty Pumps 331 1-2 hp Portable Transfer Pump
Product Information
- Model: 331
- Type: Portable Transfer Pump
- Manufacturer: Liberty Pumps
- Address: 7000 Apple Tree Avenue Bergen, NY 14416
- Contact: 1-800-543-2550
- Website: www.LibertyPumps.com
Product Usage Instructions
- Safety Precautions:
- Always disconnect the pump from the power source before attempting to service the pump to avoid the risk of electric shock.
- The pump should be plugged into a properly fused electrical outlet with a ground fault circuit interrupter (GFCI) that complies with the National Electric Code (NEC) and local codes. Wiring should be done by qualified personnel.
- The pump must be grounded using the supplied grounding conductor. Do not bypass grounding wires or remove the ground prong from attachment plugs. Failure to properly ground the pump system can cause energization of all metal portions of the pump and its surroundings.
- Avoid handling or unplugging the pump with wet hands, when standing on a wet/damp surface, or in water to prevent the risk of electrical shock.
- Do not lift or carry the pump by its power cord as it may damage the cord and expose live wires.
- Do not submerge the motor or allow it to be exposed to water. The pump is designed for dry locations only to prevent serious injury or death.
- General Information:
Read all supplied manuals before using the pump system. Follow all safety instructions provided in the manuals and on the pump.Failure to do so may result in serious injury or death.
Preparation:
No specific information provided in the manual extract.
Operation:
No specific information provided in the manual extract.
Maintenance and Troubleshooting:
No specific information provided in the manual extract.
Warranty:
No specific information provided in the manual extract.
Please refer to the complete user manual for detailed instructions on installation, operation, maintenance, troubleshooting, and warranty information. For a replacement manual or further assistance, you can visit the Liberty Pumps website or contact their customer support at 1-800-543-2550.
Safety Guidelines
__| This safety alert symbol is used in the manual and on the pump to
alert of potential risk for serious injury or death.
---|---
__| This safety alert symbol identifies risk of electric shock. It
is accompanied with an instruction intended to minimize potential risk of
electric shock.
__| This safety alert symbol identifies risk of fire. It is
accompanied with an instruction intended to minimize potential risk of fire.
__| This safety alert symbol identifies risk of serious injury or
death. It is accompanied with an instruction intended to minimize potential
risk of injury or death.
__| Warns of hazards which if not avoided will
result in serious injury or death.
__| Warns of hazards which if not avoided could
result in serious injury or death.
__| Warns of hazards which if not avoided could
result in minor or moderate injury.
__| Signals an important instruction related to the pump. Failure to follow these instructions could result in pump failure or property damage.
__ Read every supplied manual before using pump system. Follow all the safety instructions in manual(s) and on the pump. Failure to do so could result in serious injury or death.
Safety Precautions
__RISK OF ELECTRIC SHOCK
- Always disconnect the pump from power source before attempting to service the pump. Fatal electrical shock could occur.
- The pump shall be plugged into a properly fused electrical outlet with a ground fault circuit interrupter (GFCI) that conforms to current National Electric Code (NEC) and all applicable local codes. All wiring must be performed by qualified personnel.
- Pump shall be properly grounded using its supplied grounding conductor. Do not bypass grounding wires or remove ground prong from attachment plugs. Failure to properly ground the pump system can cause all metal portions of the pump and its surroundings to become energized.
- Do not handle or unplug pump with wet hands, when standing on a wet/damp surface, or in water. Fatal electrical shock could occur.
- Do not lift or carry the pump by its power cord. This will damage the power cord, and could expose the electrically live wires inside the power cord.
- Do not submerge motor or allow motor to be exposed to water. Pump is intended for dry locations only. Serious injury or death could result.
- This 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 for proper gauge of a 3-wire, grounding type extension cord.
__RISK OF FIRE
- Do not use to pump flammable or explosive fluids such as gasoline, fuel oil, kerosene, etc. Do not use in flammable and/or explosive atmosphere. Sparks could ignite flammable liquids.
__RISK OF SERIOUS INJURY OR DEATH
- Do not modify the pump/pump system in any way. Modifications may affect seals, change the electrical loading of the pump, or damage the pump and its components.
- Do not allow children to play with the pump.
- Do not remove any tags or labels from the pump or its cord.
- Keep clear of suction and discharge openings. To prevent injury, never insert fingers into pump while it is connected to a power source.
- Secure the discharge line before starting the pump. An unsecured discharge line under pressure may whip. Serious injury or death could result.
- Disconnect power, drain all liquids, and release all pressure within the system before servicing any component.
- This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov.
__
- Do not run pump dry.
- Do not block air vents.
- Do not over-tighten prime plug (hand-tighten only).
- Suction hose must not be longer than 15 ft.
- Line could take up to 2 minutes to prime.
- Do not submerge motor or allow motor to be exposed to water.
- Ambient temperature must not exceed 104°F (40°C).
- Water temperature must not exceed 135°F (57°C).
- Not for use with potable water or food products.
- Pump retains water after use. In areas that are prone to freezing temperatures, be sure to drain the pump before storing it.
- When used to transfer materials other than clear water (such as glycol or vinegar), the pump must be flushed with water and drained before storage to prevent potential pump damage. Some chemicals used in hydronic systems can result in corrosion of the aluminum pump housing.
General Information
This manual contains valuable information on the use of the Liberty Pumps
Model 331 Portable Transfer Pump. This information is provided for safety and
to prevent equipment problems.
Before use, read the following instructions carefully. Each pump is
individually factory tested to ensure proper performance. Closely following
these instructions will eliminate potential operating problems, providing
years of trouble-free service. This portable transfer pump is designed for
such applications as emptying water heaters, swimming pool covers, livestock
tanks, boats, etc. It can also be used for an intermittent pressure boost for
applications such as washing cars, cleaning driveways, etc. When used for
charging or servicing hydronic systems, the pump must be flushed with clear
water afterwards to prevent corrosion. Periodically inspect the pump and
system components, checking for weak and/or worn hoses. Be sure all
connections are secure. Protect the electrical cord from sharp objects, hot
surfaces, oil, and chemicals. Avoid kinking the power cord.
__
- Never remove the grounding blade from the power cord. Cutting the power cord or plug will void the warranty and make the pump inoperable.
Preparation
Adapters are furnished with the pump. The inlet and discharge are threaded
with 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 thread seal 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. 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 135°F (57°C). 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. Refer to Table 1 for proper wire gauge for a 3-wire,
grounding-type extension cord.
Table 1. Extension Cord Length
| Length | Wire Size |
|---|---|
| 25 ft | 16 AWG |
| 50 ft | 16 AWG |
| 100 ft | 14 AWG |
__
- Pump retains water after use. In areas that are prone to freezing temperatures, be sure to drain the pump before storing it.
- When used to transfer materials other than clear water (such as glycol or vinegar), the pump must be flushed with water and drained before storage to prevent potential pump damage. Some chemicals used in hydronic systems can result in corrosion of the aluminum pump housing.
IMPORTANT
Pump must be primed before operating to prevent shaft seal failure. To do
this, remove the prime plug (refer to Figure 1) and fill the housing with
water (approx. 2 cups). Replace the prime plug (hand-tighten only).
Connect hoses, making sure each connection is tight. A pin hole leak in the
suction hose will prevent the unit from priming. If using a garden hose (not
recommended), be sure to use a new rubber gasket.
Plug the power cord into a properly fused and grounded GFCI electrical outlet.
Turn the power switch to the “ON” position. The amount of time it takes the
pump to prime depends on the suction hose length and height. A maximum
vertical suction lift of 15 ft through a ¾” diameter garden hose could take up
to 2 minutes to prime. A check valve installed near the bottom of the suction
hose (not included) is recommended for suction lifts of more than 10 ft. This
will reduce the amount of time required to draw water.
__RISK OF ELECTRIC SHOCK
- Always disconnect the pump from power source before attempting to service the pump. Fatal electrical shock could occur.
Maintenance
Replacement parts for this product are available at
https://www.libertypumps.com/Services/Replacement-
Parts.
Brush Replacement
The Model 331 operates with a brush-type air-cooled motor. To remove
brushes for replacement or cleaning, disconnect the power cord from electrical
supply. Remove the brush caps (one on each side) by turning them with a
screwdriver counterclockwise. The brushes are attached to coil springs, which
pull outward from the pump. If used brushes are to be reinserted, mark the
location of each brush (left or right) and reinstall on the same side, in the
same orientation. Brush replacement should be scheduled after approximately
every 300 hours of use.
Figure 2. Motor Brush (only one side shown)
Troubleshooting
Refer to Table 2 for troubleshooting guidance. No repair work shall be
carried out during the warranty period without prior factory approval. To do
so may void the warranty.
Liberty Pumps, Inc. assumes no responsibility for damage or injury due to
disassembly in the field. Disassembly, other than an authorized service
centers, automatically voids warranty. All electrical work shall be done by a
qualified electrician.
Table 2. Troubleshooting Matrix
| Problem | Possible Cause | Corrective Action |
|---|
__
__
__
__
__
Pump will not run.
| Tripped circuit breaker, tripped GFCI, blown fuse, or other interruption of
power.| Reset tripped circuit breaker, reset GFCI, replace blown fuse with
properly sized fuse, check that the unit is securely plugged in, investigate
power interruption.
__
Improper voltage.
| If voltage is under 108V, check wiring size.
Remove extension cord, if connected, or use one of a heavier gauge.
Worn motor brushes.| Replace brushes.
__
Blocked impeller.
| Remove blockage – remove the 4 screws that retain the impeller plate or
remove the cap located at the back of the unit and turn the shaft with a flat
screwdriver.
Defective motor or switch.| Replace motor or switch – contact factory.
__
__
Flow rate is too low.
| Clogged or damaged hose/piping.| Replace hose; check hose for kinks.
Narrow piping or hose diameter.| Replace hose with ¾” reinforced hose.
__
Low line voltage.
| Check voltage. If under 108V, check wiring size.
Remove extension cord or use one with a heavier gauge.
Problem| Possible Cause| Corrective Action
---|---|---
__
__
__
__
Pump will not prime or retain prime after operating.
| Air leak in suction line.| Replace suction line.
Blocked impeller.| Remove front plate and clean impeller area.
Broken or worn impeller.| Replace impeller – contact factory.
Suction lift too high.| Lower pump or use a check valve near the bottom of the
suction line (maximum suction lift 15 ft).
Kinked, looped, or collapsed hose.| Straighten hose; replace with heavier,
reinforced hose.
Loose fittings.| Tighten fittings; use new rubber hose gaskets.
Suction hose out of water.| Submerge suction hose and re-prime.
Clogged inlet.| Clean inlet or suction screen at hose end.
Warranty
Liberty Pumps Wholesale Products Limited Warranty
Liberty Pumps, Inc. warrants that Liberty Pumps wholesale products are free
from all factory defects in material and workmanship for a period of three (3)
years from the date of purchase (excluding batteries and “Commercial Series”
models). The date of purchase shall be determined by a dated sales receipt
noting the model and serial number of the pump. The dated sales receipt must
accompany the returned pump if the date of return is more than three years
from the date of manufacture noted on the pump nameplate.
The manufacturer’s sole obligation under this Warranty shall be limited to the
repair or replacement of any parts found by the manufacturer to be defective,
provided the part or assembly is returned freight prepaid to the manufacturer
or its authorized service center, and provided that none of the following
warranty-voiding characteristics are evident:
The manufacturer shall not be liable under this Warranty if the product has
not been properly installed, operated, or maintained per manufacturer
instructions; if it has been disassembled, modified, abused, or tampered with;
if the electrical cord has been cut, damaged, or spliced; if the pump
discharge has been reduced in size; if the pump has been used in water
temperatures above the advertised rating; if the pump has been used in water
containing sand, lime, cement, gravel, or other abrasives; if the product has
been used to pump chemicals, grease, or hydrocarbons; if a non-submersible
motor has been subjected to moisture; or if the label bearing the model and
serial number has been removed.
Liberty Pumps, Inc. shall not be liable for any loss, damage, or expenses
resulting from installation or use of its products, or for indirect,
incidental, and consequential damages, including costs of removal,
reinstallation or transportation.
There is no other express warranty. All implied warranties, including those of
merchantability and fitness for a particular purpose, are limited to three
years from the date of purchase. This Warranty contains the exclusive remedy
of the purchaser, and, where permitted, liability for consequential or
incidental damages under any and all warranties are excluded.
Liberty Pumps, Inc. warrants StormCell® batteries for 1 year from date of purchase, and warrants that pumps of its Commercial Series are free from all factory defects in material and workmanship for a period of 18 months from the date of installation or 24 months from the date of manufacture, whichever occurs first, and provided that such products are used in compliance with their intended applications as set forth in the technical specifications and manuals.
7000 Apple Tree Avenue Bergen, NY 14416
ph : 1-800-543-2550 fax:
1-585-494-1839
www.LibertyPumps.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>