Liberty Pumps LSG Series User manual

Installer: Manual must
remain with owner/operator.
Prior to installation, record information
from pump nameplate for future reference:
Model:
7000 Apple Tree Avenue
Bergen, NY 14416
ph: 800-543-2550
fax: [phone]
www.LibertyPumps.com
Keep this manual handy for future reference.
For replacement manual, visit LibertyPumps.com,
or contact Liberty Pumps at 800-543-2550.
Retain dated sales receipt for warranty.
Serial:
Mfg Date:
Install Date:
Installation Manual 5647000L
Copyright © Liberty Pumps, Inc. 2020 All rights reserved.
Omnivore 2 HP Grinder Pumps
LSG and LSGX-Series
Models
LSG200-Series
Single-Stage
LSGX200-Series
2-Stage High Head

2 | EN Copyright © Liberty Pumps, Inc. 2020 All rights reserved. 5647000L
Contents
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 | EN
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Operating Constraints . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Inspection and Storage. . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Pump Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Model Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Pump System Components . . . . . . . . . . . . . . . . . . . . . 5 | EN
Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 | EN
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 | EN
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 | EN
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 | EN
Maintenance and Troubleshooting . . . . . . . . . . . . . . . 8 | EN
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 | EN
Safety Guidelines
Safety Precautions
Accidental contact with electrically live parts, items, fluid, or
water can cause serious injury or death.
Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
All installation and maintenance of pumps, controls,
protection devices, and general wiring shall be done by
qualified personnel.
All electrical and safety practices shall be in accordance with
the National Electrical Code®, the Occupational Safety and
Health Administration, or applicable local codes and
ordinances.
Do not remove cord and strain relief, and do not connect
conduit to pump.
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 the pump with wet hands, when
standing on damp surface, or in water unless wearing
Personal Protective Equipment.
Always wear dielectric rubber boots and other applicable
Personal Protective Equipment (PPE) when water is on the
floor and an energized pump system must be serviced, as
submerged electrical connections can energize the water. Do
not enter the water if the water level is higher than the PPE
protection or if the PPE is not watertight.
Do not lift or carry a pump or a float assembly by its power
cord. This will damage the power cord, and could expose the
electrically live wires inside the power cord.
The electrical power supply shall be located within the length
limitations of the pump power cord, and for below grade
installations it shall be at least 4 ft (1.22 m) above floor level.
Do not use this product in applications where human contact
with the pumped fluid is common (such as swimming pools,
fountains, marine areas, etc.).
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.
Single-phase 208/230V pumps shall only be operated
without the float switch by using the circuit breaker or panel
disconnect.
Some products may have internal capacitors that could cause
shock. Avoid contact with plug ends after removing from
energy source.
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.
RISK OF ELECTRIC SHOCK

5647000L Copyright © Liberty Pumps, Inc. 2020 All rights reserved. 3 | EN
Do not use an extension cord to power the product.
Extension cords can overload both the product and extension
cord supply wires. Overloaded wires will get very hot and can
catch on fire.
This product requires a separate, properly fused and
grounded branch circuit, sized for the voltage and amperage
requirements of the pump, as noted on the nameplate.
Overloaded branch circuit wires will get very hot and can
catch on fire. When used, electrical outlets shall be simplex of
the appropriate rating.
For cord replacement: power cord must be of the same
length and type as originally installed on the Liberty Pumps
product. Use of incorrect cord may lead to exceeding the
electrical rating of the cord and could result in death, serious
injury, or other significant failure.
Do not use this product with or near flammable or explosive
fluids such as gasoline, fuel oil, kerosene, etc. If rotating
elements inside pump strike any foreign object, sparks may
occur. Sparks could ignite flammable liquids.
Sewage and effluent systems produce and may contain
flammable and explosive gases. Prevent introduction of
foreign objects into basin as sparks could ignite these gases.
Exercise caution using tools and do not use electronic devices
or have live, exposed electrical circuits in or around basins,
open covers and vents.
These pumps are not to be installed in locations classified as
hazardous in accordance with the National Electric Code®,
ANSI/NFPA 70.
Energizing the control panel or breaker for the first time is
potentially dangerous. Licensed electrical personnel should
be present when the panel or breaker is energized for the first
time. If faults caused by damage or poor installation practices
have not been detected, serious damage, injury or death can
result when power is applied.
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.
All pump/pump system installations shall be in compliance
with all applicable Federal, State, and Local codes and
ordinances.
Do not allow children to play with the pump system.
Do not allow any person who is unqualified to have contact
with this pump system. Any person who is unaware of the
dangers of this pump system, or has not read this manual,
can easily be injured by the pump system.
In 208/230V installations, one side of the line going to the
pump is always “hot”, whether the float switch is on or off. To
avoid hazards, install a double pole disconnect near the
pump installation.
Vent basin in accordance with local code. Proper venting of
sewer and effluent gases alleviates poisonous gas buildup
and reduces the risk of explosion and fire from these
flammable gases.
Wear adequate Personal Protective Equipment when working
on pumps or piping that have been exposed to wastewater.
Sump and sewage pumps often handle materials that can
transmit illness or disease upon contact with skin and other
tissues.
Do not enter a pump basin after it has been used. Sewage
and effluent can emit several gases that are poisonous.
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.
Do not use this product with flammable, explosive, or
corrosive fluids. Do not use in a flammable and/or explosive
atmosphere as serious injury or death could result.
This product contains chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. www.p65warnings.ca.gov.
A grinder pump contains metal parts that rotate at high
speeds. Be careful around pump base while power is
connected. Make sure that the pump is either in the tank or
clear from people and wires when in operation.
This pump has been evaluated for use with water only.
Wear Personal Protective Equipment as exposed bottom has
sharp edges.
Check 3-phase pumps for correct rotation prior to installing
pump(s) in basin. To change rotation, reverse any two of the
three power leads to the pump (not the ground). Code the
wires for reconnection after installation.
Do not dispose of materials such as paint thinner or other
chemicals down drains. Doing so could chemically attack and
damage pump system components and cause product
malfunction or failure.
Do not use pumps with fluid over 140°F (60°C). Operating the
pump in fluid above this temperature can overheat the pump,
resulting in pump failure. Maximum continuous duty fluid
temperature is 104°F (40°C).
Do not use pump system with mud, sand, cement,
hydrocarbons, grease, or chemicals. Pump and system
components can be damaged from these items causing
product malfunction or failure. Additionally, flooding can
occur if these items jam the impeller or piping.
Do not run dry.
The Uniform Plumbing Code® states that sewage systems
shall have an audio and visual alarm that signals a
malfunction of the system, to reduce the potential for
property damage.
Do not position the pump float directly under the inlet from
drain tile or in the direct path of any incoming water.
Keep pump upright.
At no time should the pump be stored within an incomplete
wet pit. The pump should not be placed into the pit until it
can be fully operational.
Do not allow the pump to freeze.
RISK OF FIRE
RISK OF SERIOUS INJURY OR DEATH

4 | EN Copyright © Liberty Pumps, Inc. 2020 All rights reserved. 5647000L
Inspection and Storage
Initial Inspection
The pump should be immediately inspected for damage that may
have occurred in shipment.
1. Visually check the pump and any spare parts for damage.
2. Check for damaged electrical wires, especially where they exit
the motor housing.
Contact Liberty Pumps customer service to report any damage or
shortage of parts.
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
pit. The pump shall not be placed into the pit until it can be
fully operational.
Do not allow the pump to freeze.
LSG/LSGX-Series Omnivore grinder pumps are shipped from the
factory ready for installation and use. The pump should be held 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 cutters and impellers manually rotated once a month
to lubricate the seals.
Installed pumps that are idle for greater than one month should
have impellers and cutters 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 receptacle. Turn the breaker on for 30 seconds,
then turn the breaker off. Plug the piggyback switch back in. Refer
to Figure 3.
Pump Design
LSG/LSGX-Series grinder pumps are designed for continuous
underwater operation. The motor and pump form a close coupled,
watertight unit. The induction motor is insulated against heat and
moisture in accordance with Class B 265°F (130°C) regulations.
The motor is protected against damage from water entry by two
seals. The lower seal is a Viton lip seal and the upper seal is
mechanical, consisting of two silicon carbide faces.
The impeller and volute are designed for efficient flow
characteristics and clog-free operation. The hardened cutters
grind solids and fibrous matter into small particles that can be
safely pumped through small diameter piping.
Model Specifications
For complete listing of models and their specifications, refer to
http://www.LibertyPumps.com/About/Engineering-Specs. Pump
nameplate provides a record of specific pump information.
General Information
Before installation, read these instructions carefully.
Each pump is individually factory tested to ensure
proper performance. Closely following these
instructions will eliminate potential operating
problems, assuring years of trouble-free service.
The LSG/LSGX-Series pumps are to be used for
handling septic tank effluent, sewage, and drain
(storm) water.
Provide pump serial number in all correspondence.
Pumps are CSA certified to CSA and UL® standards.
Pumps must be serviced at a qualified repair facility
approved by Liberty Pumps. No repair work should
be carried out during the warranty period without
prior factory approval. Any unauthorized field
repairs void warranty. Contact Liberty Pumps at
1-800-543-2550 to locate the closest authorized
service center.
Operating Constraints
It is extremely important to verify that the pump
has been sized correctly for the intended
installation. The operating point of the pump must
lie within the acceptable range as outlined by the
applicable Liberty Pumps performance chart.
Operating the pump outside of the recommended
range can invalidate the CSA Certification of the
pump and can also cause damage and premature
failure. Operating outside of the recommended
range can cause the pump to exceed its rated
nameplate amp draw, which will void the pump
certification. It can also cause motor overheating,
cavitation, excessive vibration, clogging, and poor
energy efficiency.
RISK OF ELECTRIC SHOCK

5647000L Copyright © Liberty Pumps, Inc. 2020 All rights reserved. 5 | EN
Pump System Components
Control Panel
Manual LSG/LSGX-Series pumps require a separate, approved
pump control panel for automatic operation. Operation of these
models will be according to the control 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.
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 an LSG/LSGX-Series pump to an
existing control panel, verify the panel is correctly sized and
equipped for the pump.
Control panels designed for use with the LSG/LSGX-Series pumps
available from Liberty Pumps can be found at http://
www.LibertyPumps.com/Portals/0/Files/panel_selection_guide.pdf
or contact Liberty Pumps.
LSG202M-C and LSGX202M-C models require a panel-mounted
start circuit consisting of a start capacitor, run capacitor, and start
relay, which are available separately. Refer to Table 1 for these
control panel components.
Overload Protection
3-phase LSG/LSGX-Series grinder pumps require overload
protection in the control panel. The motor control unit shall be
approved and shall be properly sized or adjusted for the full load
input power indicated on the pump nameplate. It is important to
properly adjust or select the motor control overload protection.
The full load amperes on the nameplate should be used as a
baseline, but it is important to consider that events such as supply
voltage variation or large solids passing through the pump can
temporarily increase current draw. To avoid possible nuisance
tripping, it may be necessary to adjust overloads to a value slightly
higher than the full load input power indicated on the pump
nameplate.
Thermostat
1-phase pump models are protected from locked rotor and
running overloads by a thermal overload (thermostat) integrally
mounted to the motor and wired to shut down the pump if
overheating occurs. The thermostat resets automatically after the
pump has cooled.
Power and Control Cords
Do not remove cord and strain relief, and do not connect
conduit to pump.
The power and control cords cannot be spliced; a junction box
may be used.
IMPORTANT: Each cord has a green lead. This is the ground wire
and must be grounded properly per NEC®and/or local codes.
Float Switches
Pump On and Off cycles are controlled by float switches in the wet
well (basin). Automatic pumps have a “piggyback” float switch
attached to the side of the pump, while manual pumps have float
switches attached to the control panel. Refer to control panel or
switch instructions for proper electrical connection.
Float Sequence: Piggyback (Automatic Models)
1. As the liquid level in the basin rises, the float tilts, closing the
switch. This starts the pump.
2. The pump runs until the liquid level falls below the PUMP OFF
level of the float (factory set at 7 in), emptying the basin.
Float Sequence: Simplex (Manual Models)
1. As the liquid level in the basin rises, the PUMP OFF float tilts,
closing the switch. This level must be set at a minimum of
7 in. As the liquid level continues to rise, the PUMP ON float
tilts. This switch closes, starting the pump.
2. The pump runs until the liquid level falls below the PUMP OFF
float, emptying the basin.
3. In the event of a malfunctioning float switch, control relay, or
pump, the liquid level rises and tilts the HIGH LEVEL ALARM
float. The alarm system will activate.
Float Sequence: Duplex (Manual Models)
1. As the liquid level in the basin rises, the PUMP OFF float tilts,
closing the switch. As the liquid level continues to rise, the
LEAD PUMP ON float tilts. This switch closes, starting the lead
pump.
2. The pump runs until the liquid level falls below the PUMP OFF
float, emptying the basin.
3. On the next rise of the liquid level, the other pump will start
on the LEAD PUMP ON signal. The pumps will continue to
alternate their cycles.
Note: The ON/OFF float switch differential should be set as to
not exceed 12 starts per hour.
4. If the liquid level rises to the LAG PUMP ON float, the second
pump will start. Both pumps will run until the liquid falls
below the PUMP OFF float, emptying the basin.
5. In the event of a malfunctioning float switch, control relay, or
pump, the liquid level rises and tilts the HIGH LEVEL ALARM
float. The alarm system will activate.
Table 1. Control Panel Components 1-Phase
Required Component and
Specification Liberty Pumps P/N
208V 1-phase Start Kit
(contains 3 items listed separately below) K001316
Start Capacitor, 200–240 µF 220 VAC
Run Capacitor, 50 µF 370 VAC
Start Relay, Mars Potential Relay 19551 #551
RISK OF ELECTRIC SHOCK