General Information; System Operation - Liberty Pumps 441 Manuel D'installation

Gener a l I nf orm a t ion
The Model 441 battery back-up sump pump system is not a
substitute for a primary sump pump. It is designed to
temporarily provide backup to a primary sump pump during a
power outage or other problem that prevents normal operation of
the primary pump.
Install this system during a time when the primary pump will not
be needed. If this is not possible and water will enter the sump pit
during the installation process, an additional pump may be
required to keep the pit dry.
Included Parts
1. 12 V Battery Back-up Sump Pump
2. Check Valve
3. Reducer Tee with Pipe Nipple and (2) Reducer Bushings
4. Back-up Switch
– Hose Clamp
5. Battery Box
– Battery Box Strap
6. Charger Kit
– Terminal Block
– Battery Charger & Maintainer
– Battery Leads (Black & Red)
– Fuse
– Double-Sided Tape
– (2) Screws (for optional mounting)
7. Installation Manual
2
1
3
4
Manual
7
– StormCell® battery recommended
– Battery not included
Battery Recommended
Copyright © Liberty Pumps, Inc. 2019 All rights reserved.
4414000D
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6
Copyright © Liberty Pumps, Inc. 2019 All rights reserved.
Sy st em Oper a t i on
The Model 441 back-up pump will activate when the sump water
triggers the back-up pump's float switch. The system will continue
to operate automatically until the issue with the primary pump is
corrected, and for as long as the charge in the battery installed
with the system lasts.
Charger
The charger is designed to continuously charge, maintain peak
charge, and monitor battery health. With AC power applied, the
charger can be left unattended and will not overcharge or damage
the battery. It will also monitor and notify the user via an alarm if
the battery is no longer suitable for use.
The time the charger takes to recharge a battery depends on the
battery's reserve capacity and its current state of discharge. The
charger may take as long as 10 days to charge the battery to a
maintenance charging point. For more detailed information, refer
to Charger Operation on page 13.
Battery
The total time the battery back-up can operate in standby while
the AC power is off greatly depends on the battery installed with
the system. Liberty Pumps recommends using a Liberty Pumps
StormCell size 27 or 31 Deep Cycle Battery with the 441 system.
The StormCell batteries have been specifically designed to
maximize reserve capacity time (the time the battery can operate
continuously before it needs to be recharged). Additionally,
StormCell batteries have been modified to provide the highest
resistance to battery plate degradation due to repeated charging
and continuous maintenance charging. With a charged 27 or 31
deep cycle battery, this back-up system can expect to operate for
4.25 hours continuously or up to 6 days cycling on 4 times an
hour, moving 10 gallons of water at 10 feet of vertical lift.
Note: In an emergency when the system's deep cycle battery has
been depleted, any 12 V automobile battery, or other lead acid
battery, may be used to keep the back-up pump operational. Be
sure to replace the deep cycle battery back into the system as
soon as possible. Automobile batteries have much lower reserve
capacities and require frequent, repeated charging that will result
in early battery failure.
Battery Back-up Pump
The Model 441 back-up pump system flow rates are directly tied
to the voltage the battery supplies to the pump while it is running.
The flow rates shown in Table 1 were generated by supplying the
441 pump with 12.1 V at the battery terminals. When the battery
supplies the pump with more than 12.1 V, the pump's flow rate
will be greater than in Table 1; likewise, flow rates will be less
when the voltage is less than 12.1 V.
Table 1. Back-up Pump Flow Rates
Vertical Pumping
8
Head (ft)
Gallons Per Hour 1500
10 12 16
1300 1050 450
18
0
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