Liberty Pumps HT450 Serie Manual De Instalación página 6

Piggyback Switch Operation
IMPORTANT: Verify breaker is turned off before plugging in the
switch.
Automatic models: Plug the piggyback switch into the receptacle.
The receptacle must be wired to an appropriately sized breaker.
Plug the pump into the piggyback receptacle. Install the cable
clamp (if supplied) for strain relief.
NO!
Discharge
Make all discharge connections. A union should be installed just
above the cover to facilitate pump removal if necessary. A check
valve is required to prevent the backflow of liquid after each
pumping cycle. A gate 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
reduce the discharge to below that which is provided on the pump.
Larger pipe sizes may be required to eliminate friction head loss
over long runs. Contact Liberty Pumps or other qualified person if
questions arise regarding proper pipe size and flow rates.
Vent
Vent basin in accordance with applicable plumbing codes.
Operation
RISK OF SERIOUS INJURY OR DEATH
 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.
Starting System
Note: These pumps come equipped with an air bleed hole to help
prevent air lock. A small spray of water from this hole is normal
while pump is running.
1. Verify all plumbing components are installed correctly and
functional. Verify all valves are open and ready for pump use.
2. Double check all wire connections. Re-tighten all factory and
field connections.
3. Ensure pump has no obstructions.
4. With all electrical and mechanical connections complete and
secure, turn on power to pump.
6 | EN
Normal Temporary Manual
Operation
Copyright © Liberty Pumps, Inc. 2023 All rights reserved.
5. Verify operation of the pump and floats.
6. Run several cycles of water through the system to verify
correct control operation for the installation.
Be certain to complete adequate testing, especially on systems
with multiple pumps or custom control configurations.
Maintenance and Troubleshooting
RISK OF ELECTRIC SHOCK
 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.
RISK OF SERIOUS INJURY OR DEATH
 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.
Maintenance
As the motor is oil-filled, no lubrication or other maintenance is
required.
To keep the pump/pump system operating smoothly, perform the
following routine checks:
Monthly
1. Pour enough water into the sump to activate the pump when
not normally in use to verify proper function.
2. Pumps that are idle in a wet basin must be removed—do not
store pump in wet basin.
Quarterly
1. Check pump for corrosion and wear.
2. Check for free and unobstructed float switch operation and
float switch condition. The float must be able to move freely
through its complete travel without any restrictions.
3. Inspect for proper check valve operation.
4. Check that the pit is free from accumulated debris, rocks or
other objects that may potentially jam the pump.
Annually
1. Inspect and clean basin. Replace any defective components.
Troubleshooting
Refer to Table 1 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 repair facility approved by Liberty Pumps or its
authorized service centers, automatically voids warranty.
7229000D