Vulcan-Hart DS Series Instruction Manual

205B Konrad Cres.
Markham, Ontario
L3R 8T9
Phone 905-513-1550
Fax 905-513-1557
www.chargers.ca
Instruction Manual
Type DS
Industrial Battery Charger
Model DS 12 Battery Charger
Model DS 24 Battery Charger
Automatic with a high-low charging method.
Use on 120 volt 60 cycle AC supply.
This Battery Charger is a full-wave silicon rectifier, equipped with DC Automatic reset circuit
breaker as protection against overload or short circuit.

OPERATION

Your Vulcan charger is voltage controlled and when the battery reaches an average of 2.33 volts
per cell, the charging rate will automatically reduce to a trickle float rate of 200 milliamps. This
float rate will continue until the main switch is switched off manually. Should a load be applied
to the battery, dropping the voltage, then the charger will reset to the high rate automatically. The
charger can also be reset to the high rate manually by merely switching to the OFF position and
then ON again. To check the tripping point, connect a voltmeter across the battery and when the
voltage reaches approximately 2.33 volts per cell, the tripping action should take place. Should
adjustments be required, remove the cover, locate potentiometer and adjust with a small
screwdriver. Clockwise rotation DECREASES cut-off voltage.

TERMINALS PROVIDED

Three designated as 108V-120V-132V are for the adjustment, to correspond to line voltage at
installation. To adjust, remove yellow wire and put on the appropriate terminal. The two
terminals designated as LINE-COM are for AC connections. The two, designated as (+) positive
and (-) negative for connecting battery. USE NOT LESS THAN 10 GAUGE WIRE.

FLOAT-RATE ADJUSTMENT

By moving the sliding band on the Adjustable Resistor mounted inside of the case.
Next, place the rocker switch to the ON position and the Charger will now be in operation.
Always make sure the Equalize Switch is set to the NORMAL position for automatic control.
The rate of charge will now be indicated on the ammeter and may vary or need adjusting,
depending upon the AC supply voltage, as well as the internal condition of the batteries. Under
prevailing conditions, your charger may not deliver the maximum charging rate to the batteries
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