Liberty Pumps 441 Owner's manual

Supplemental Instructions
Copyright © Liberty Pumps, Inc. 2021 All rights reserved.
44140A0B
Model 441 1.5A Charger System
Safety Precautions
Refer to accompanying back-up pump system manual 4414000
for all safety measures.
Follow the battery manufacturer’s recommendations for
maintenance and safe use of battery.
1.5A Charger Operation
This section contains important safety and operating instructions
for the 12V battery charger. Keep it with or near charger at all
times.
Read this section and follow the instructions carefully before using
the charger.
Charger Location
•Locate charger as far away from battery as DC cables
permit, at least 2 feet above floor level.
•Never place charger directly above battery being charged
as gases from battery will corrode and damage charger, or
over any combustible surfaces.
•Never allow battery acid to drip on charger when reading
gravity or filling battery.
•Do not operate charger in a closed-in area or restrict
ventilation in any way.
DC Connection Precautions
•Connect and disconnect DC output terminals only after
removing charger from AC outlet.
Once power is applied, the charger will automatically begin
charging the system. When the battery is charged to “full” state,
the charger automatically switches to maintain the battery; it will
never overcharge the battery. It will monitor the battery voltage
and continue with peak performance to the battery.
The charger circuitry opens under severe overload. This condition
may occur if attempting to charge any severely discharged or
heavily sulfated battery. Once opened, the charger stops charging
for a short period and then automatically resumes charging. The
CHARGING LED will be OFF until charging resumes. Overloading
could be due to an external load; remove the load condition prior
to attempting to recharge the battery.
The charger has reverse battery and short circuit protection. If a
reverse battery condition exists, unplug charger from AC power
and reverse the connections.
The unit will automatically detect the battery internal cells
condition as well as battery sulfated conditions.
The charger has internal overheat protection. The charger will turn
off power until the temperature is down to a safe level, then
automatically start charging again. All LEDs will be off.
The charger is designed to charge 12 Volt batteries. Use AGM or
Wet Cell lead-acid batteries.
•Never charge lithium ion batteries on this charger.
•The charge time is dependent on the Ah rating of the
individual battery. See chart below.
*Approximate charge time using a constant current charger at
standard amps as specified on the battery. Charging times may
vary depending on the Ah rating of the battery.
100%
75%
50%
25%
0%
voltage
% of charge
*Approximate
charge time
3–6 hours
5–11 hours
13–20 hours
11.5 V 11.9 V 12.3 V 12.7 V 13 V

2 | EN Copyright © Liberty Pumps, Inc. 2021 All rights reserved. 44140A0B
1.5A Charger Details
1.5A Charger Stages
1.5A Charger LED Status
Specifications
Input Connector 6 ft with 2-prong plug
Output Cord 6 ft with Quick Connector
Input Voltage 100–120 VAC
Input Frequency 50/60 Hz
Output 1.5A @ 12 VDC
Size without Cable
L x W x H
4.68 x 2.87 x 1.26 in
[119 x 73 x 32 mm]
Weight 0.95 lbs [0.43 Kg]
Approvals UL/cUL/FCC/BC/DOE
Environmental Characteristics
Operating Temperature 0 to 113°F [0 to 45°C]
Storage Temperature -13 to 185°F [-25 to 85°C]
Operating Humidity Range 0 to 90% RH
Cooling Passive/Natural
Stage Explanation LED
Soft Start
Change
Gently charges the battery using a
reduced charge output until the
battery voltages reaches 11.0 V.
Amber
flashing
Bulk Charge
Charges using a constant
maximum current until the battery
reaches 14.4 V.
Amber
Absorption
Charge
Uses a constant voltage while
reducing the charging output
current to ensure the battery
receives a full charge without
overcharging the battery.
Amber
Full/Float Battery is fully charged and is
being maintained. Green
ON Flashing OFF
Explanation
Power Charging Full/
Float Fault
Red
LED Amber LED Green LED Red LED
AC Power connected,
Battery disconnected
AC Power connected,
Battery disconnected
over 10s, enter Low
Power ECO mode
Soft Start Charge
Soft Start Charging
timed out, stop
charging
Bulk Charging
Bulk Charging timed
out, stop charging
Absorption Charge
Fully Charged
Battery in reverse
polarity connection
Battery bad cells
detection
Battery weak or
sulfated
AC Power OFF

44140A0B Copyright © Liberty Pumps, Inc. 2021 All rights reserved. 3 | EN
1.5A Charger Connection
Terminal Block Connection
1. Two screws are provided for mounting charger in a clean dry
location away from battery box where it will be accessible.
2. Complete wiring connections as directed in Table 1.
3. Install 20 Amp fuse (provided) in terminal block.
Figure 1. Terminal Block
Battery Connection
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.
Never allow the battery DC terminals to touch each other. This
can cause severe burns and start a fire. For added safety,
protect the battery in provided battery box.
Figure 2. Battery Charger
1. Install battery into battery box.
2. Check polarity of battery posts. POSITIVE (POS.,P,+) battery
post usually has a larger diameter than NEGATIVE (NEG.,N,−)
post.
Some batteries are equipped with 'Wing-Nut' terminals
allowing for easy placement of the terminals to these posts.
3. Connect POSITIVE (RED) charger terminal lead to POSITIVE
(POS.,P,+) battery post via access hole in battery box cover.
4. Tighten connection securely.
5. Connect the NEGATIVE (BLACK) charger terminal lead to
NEGATIVE (NEG.,N,−) battery post via access hole in battery
box cover.
6. Tighten connection securely.
IMPORTANT: Do not face battery when making final
connection.
7. Plug the charger into a 115/120 VAC electric outlet.
IMPORTANT: Do not use a switch-controlled outlet.
8. Mark circuit in main power panel “Back-up sump pump power
supply; do not turn off”.
9. With the charger properly connected and plugged in, the
panel on the front of the charger will show the power and
battery status.
Note: An alarm, located in the terminal block, automatically
sounds when the system runs if the alarm is enabled. The
alarm is silenced for 24 hrs when the ALARM DISABLED
button is pressed.
10. Secure the battery in the box with the provided hold-down
strap to prevent unwanted access to the battery.
11. When disconnecting charger, always do so in reverse
sequence of connecting procedure and break first connection
while as far away from battery as practical.
Table 1. Wiring Connections
Connection Terminal Block
Positive lead from Charger TO CHARGER [+] connection
Negative lead from Charger TO CHARGER [–] connection
Back-up pump Float Switch
(2 wires)
TO FLOAT SWITCH connection
(2 wires)
Positive lead from Pump TO PUMP [+] connection
Negative lead from Pump TO PUMP [–] connection
RISK OF SERIOUS INJURY OR DEATH
BATTERY HAZARDS

4 | EN Copyright © Liberty Pumps, Inc. 2021 All rights reserved. 44140A0B
Figure 3. Complete Back-up Pump System Example
Test 1.5A System
Do not use metal or any other electrical conducting material
to raise the float or contact anything inside an electrically live
sump pit.
1. Battery should be fully charged before placing into service.
2. Lift the back-up pump float switch. The pump should start.
The following indicators should be ON: Power, Charging, and
Full/Float. Observe the pump is running. Release the float
switch. Pump should stop.
Troubleshooting 1.5A Charger
Do not disassemble charger, cord, or any associated part. Take
charger to a qualified service center when service or repair is
required.
RISK OF ELECTRIC SHOCK
Not to scale
Problem Indication Possible
Cause Corrective Action
Charger
does not
work.
No
indicator
LEDs ON.
No AC power.
Check AC
connections and
make sure power is
switched ON.
Charger
has no DC
output.
Fault LED
is ON.
Reverse
polarity
connection to
battery.
Check that the
battery clips haven’t
fallen off the
battery.
Check that the
battery clips/
terminals are
connected to the
correct polarity.
No
charging
current.
Fault LED
is Flashing.
Battery is
severely
sulfated or
cannot hold a
charge. Replace battery.
Battery has a
damaged cell.
Full LED is
Flashing
Full LED is
Flashing.
Battery is
severely
sulfated
Replace battery.