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Installation
ELECTRICAL CONNECTIONS
Hazardous voltage. Can cause serious or
fatal electrical shock. Review safety instructions before
operating charger. Do not modify cord or plug.
4 STAGE LEAD-ACID
BATTERY CHARGER
BLACK TERMINAL NEGATIVE (-)
RED TERMINAL POSITIVE (+)
Figure 9 – Wiring Connections MBSP
TABLE I - MBSP Wiring Connections
Connect the
Positive (+) lead from the battery
Negative (–) lead from the battery
Positive lead from the charger
Negative lead from the charger
Backup sump pump
float switch (2 wires)
Positive lead from the pump
Negative lead from the pump
BATTERY CONNECTION
+
–
CHARGER CONNECTION
+
–
FLOAT SWITCH CONNECTION
REPLACE FUSE WITH SAME 25 AMP -
36V TYPE AND RATING ONLY
PUMP FUSE &
CONNECTION
+
–
DISABLE ENABLE
AUDIBLE ALARM
DISABLE WHEN LIT
BATTERY CONNECTION
+
–
CHARGER CONNECTION
+
–
FLOAT SWITCH CONNECTION
REPLACE FUSE WITH SAME 20 AMP -
36V TYPE AND RATING ONLY
20
PUMP FUSE &
CONNECTION
+
–
DISABLE ENABLE
AUDIBLE ALARM
DISABLE WHEN LIT
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To the Junction Box's
Positive battery connection
Negative battery connection
Positive charger connection
Negative charger connection
Float switch
connection (2 wires)
Positive pump connection
Negative pump connection
CHARGER/BATTERY INSTALLATION
NOTICE: An alarm, located in the junction box,
automatically sounds when the system runs if the alarm
is in the "Enable" position. The alarm is silenced when
the alarm switch is in the "Disable" position.
Model MBSP:
1. Apply two pieces of two-sided tape (provided, Key
No. 9) to the back of the junction box. Press the
junction box onto the battery box as illustrated in
Figure 9 and on Page 15 (Exploded View).
2. Connect the charger as shown in Table I and
Figure 9.
3. Plug the charger into a 115-120 Volt AC outlet
deliv er ing at least 15 amps. Do not use a switch
controlled outlet. Mark circuit in main power panel
"Backup sump pump power supply; do not turn off".
4. With the charger properly connected and plugged in,
the panel on the front of the charger will show one
of the conditions illustrated in Figure 10.
Red LED - AC power is present
Red
Figure 10 – MBSP LED Panel
Yellow LED - Prequalification test stage is complete and testing
or charging in process
Green/Occasional Yellow - Charger turns on intermittently to
maintain proper charge
Green LED - Charging complete
Green/Yellow LEDs Alternately Flashing - System is in Error Mode
(see Table II, Page 9)
NOTICE: For more detailed information, see "Charger Operation" on
Page 13.
8
Green
Yellow
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