1.0 INTRODUCTION
This manual describes the installation and wiring for the Auto-Charge 12HO DV Automatic
Battery Charger. It is suggested that the installer read the entire instructions to become famil-
iar with the tasks involved before starting.
2.0 VEHICLE WIRING INSTALLATION
The installation of the vehicle wiring provides a direct connection between the battery and the
Auto-Charge 12HO DV Automatic Battery Charger. The battery is automatically charged at
constant voltage. For deeply discharged batteries or if the charger is operated while
thevehicle is started, a current limiter automatically limits the output to 20 amperes. Input
power may be either 115 volts or 230 volts, 50 or 60 Herz. A recessed voltage selector switch
is provided on the end panel near the output terminal strip.
The Auto-Charge 12HO DV uses remote sensing and therefore four wires are necessary to
connect to the battery. Two wires charge the battery while an additional two wires detect the
battery voltage. These connections are made on the output terminal strip.
3. AUTO-CHARGE 12HO DV INSTALLATION
The Auto-Charge 12HO DV Automatic Battery Charger should be installed in an area with
adequate ventilation. A power cord is supplied for connection to the input power source. A
switch on the end panel of the charger selects either 115 volts or 230 volts. Set this switch to
the proper position to correspond to the input voltage before applying power to the charger.
1. Mount the charger using the four holes provided. See figure 1.
2. Connect the wiring from the batteries to the Output Terminal Strip. Spade lugs that have
been securely crimped or soldered should be used
3. Connect the wiring to the batteries. Ring lugs that have been securely crimped or sol
dered should be used.
4. Double check all wiring before proceeding.
5. Wire the A.C. power line to the power source and check the position of the Voltage Selec
tor Switch.
NOTE
DO NOT APPLY 230 VOLTS TO THE CHARGER WITH THE SELECTOR
SWITCH IN THE 115 VOLT POSITION SERIOUS DAMAGE MAY RESULT
6. The pilot light will light to show that the charger has power.
7. The ammeter will indicate how much current is flowing to the battery. A charging current
limit of 20 amperes is factory set.
