Minuteman 957732 User Manual
®
LOOK FOR THIS SYMBOL TO POINT OUT SAFETY PRECAUTIONS. IT MEANS:
IF YOU DO NOT FOLLOW THESE
24 VOLT AUTOMATIC
BATTERY CHARGER
PART NO. 957732
Specifications
AC Input: 230 volts, 50 hertz, 3.5 amps, single-phase
DC Output: 24 volts, 20 amps initially tapering to 6 amps
Battery Type: 24 volt, 12 cell, 168 to 275 amp-hour, liquid electrolyte (wet) lead-acid batteries
PLEASE SAVE THESE IMPORTANT SAFETY AND OPERATING INSTRUCTIONS
For correct operation of the equipment, it is important to read and be familiar
with this entire manual before installing and operating the charger.
DO NOT DISCARD THIS MANUAL AFTER READING.
BECOME ALERT—YOUR SAFETY IS INVOLVED.
SAFETY INSTRUCTIONS, INJURY OR PROPERTY DAMAGE CAN OCCUR.
IMPORTANT SAFETY INSTRUCTIONS
1. SAVE THESE INSTRUCTIONS - This manual
contains important safety and operating
instructions for battery charger Model 957732.
2. Before using battery charger, read all
instructions and cautionary markings on battery
charger, battery, and product using battery.
CAUTION: TO REDUCE RISK OF INJURY,
CHARGE ONLY LIQUID ELECTROLYTE (WET)
LEAD ACID RECHARGEABLE BATTERIES.
OTHER TYPES OF BATTERIES MAY BURST
CAUSING PERSONAL INJURY AND DAMAGE.
3. Do not expose charger to rain or snow.
4. Use of an attachment not recommended or sold
by the battery charger manufacturer may result
in a risk of fire, electric shock, or injury to
persons.
5. To reduce risk of damage to electric plug and
cord, pull by plug rather than cord when
disconnecting charger.
6. Make sure cord is located so that it will not be
stepped on, tripped over, or otherwise subjected
to damage or stress.
7. An extension cord should not be used unless
absolutely necessary. Use of improper
extension cord could result in a risk of fire and
electric shock. If extension cord must be used,
make sure:
a. Pins on plug of extension cord are the same
number, size, and shape as those of plug on
charger;
b. Extension cord is properly wired and in good
electrical condition;
c. Wire size is large enough for AC ampere
rating of charger.
8. Do not operate charger with damaged cord or
plug; replace it immediately.
9. Do not operate charger if it has received a sharp
blow, been dropped, or otherwise damaged in
any way; take it to a qualified service center.
10. Do not disassemble charger; take it to a
qualified service center when service or repair is
Operating Instructions 1 01367F
required. Incorrect reassembly may result in a
risk of electric shock or fire.
11. To reduce risk of electric shock, unplug charger
from a live outlet or disconnect AC power to the
outlet before attempting any maintenance or
cleaning. Turning off controls will not reduce
this risk.
INTRODUCTION
This battery charger is a self-regulating charger with
a minimum of moving parts, designed for long,
trouble-free service. Built-in line voltage compensation produces a consistent output when the AC
supply voltage varies by as much as 10% from
nominal. Convection cooling maximizes the
reliability and minimizes any maintenance costs.
ONLY LIQUID ELECTROLYTE (WET) LEAD ACID
BATTERIES should be recharged with this charger
to ensure superior battery performance and life. A
patented electronic circuit turns the charger on and
off automatically. When the battery has reached its
maximum state of charge, the circuitry will turn the
charger off.
RECEIVING AND INSTALLING THE CHARGER
When the charger is received, check for possible
in-transit damage. If any damage is found, it should
be reported as a claim to the carrier.
Proper installation of the charger is important in
order to achieve good charger performance and to
prevent damage to the charger and batteries. The
charger should be located in a clean, cool, dry, and
well ventilated area. To permit free air flow for
convection cooling, allow three inches (3") minimum
between the charger and any wall and six inches
(6") between the charger and other equipment.
Position the charger on a foundation of stone, brick,
concrete or grounded metal.
DANGER: TO REDUCE THE RISK OF FIRE,
DO NOT USE THE CHARGER A NEAR
FLAMMABLE MATERIALS OR VAPORS.
AC INPUT
CAUTION: TO REDUCE RISK OF ELECTRIC
SHOCK OR FIRE, DISCONNECT POWER TO
RECEPTACLE BEFORE INSTALLING OR
REMOVING UNIT.
This battery charger must be connected to a 230
VAC, 50 Hertz, single-phase AC power source and
is factory equipped with a specific electric cord.
Have a proper plug installed on the AC cord to
permit connection to an acceptable electric circuit.
Make sure the charger is connected to an outlet
having the same configuration as the plug. No
adapter should be used with this charger.
DANGER: NEVER ALTER AC CORD OR
PLUG PROVIDED IF IT WILL NOT FIT OUTLET.
HAVE A PROPER OUTLET INSTALLED BY A
QUALIFIED ELECTRICIAN. IMPROPER
CONNECTION CAN RESULT IN A RISK OF AN
ELECTRIC SHOCK.
GROUNDING INSTRUCTIONS
Charger should be grounded to reduce the risk of
electric shock. Charger is equipped with an electric
cord having an equipment-grounding conductor and
a grounding plug. The installed plug must be
plugged into an outlet that is properly installed and
grounded in accordance with all local codes and
ordinances.
DANGER: TO REDUCE RISK OF FIRE OR
ELECTRIC SHOCK, CONNECT BATTERY
CHARGER DIRECTLY TO GROUNDING
RECEPTACLE (THREE-PRONG). AN ADAPTER
SHOULD NOT BE USED WITH BATTERY
CHARGER.
Always use a three-conductor, No. 14 AWG (1.5
mm) heavy duty cord with ground, properly wired, in
good electrical condition and keep it as short as
possible. Make sure the pins on the plug of the
extension cord are the same number, size and
shape as the AC plug of the battery charger. The
use of an improper extension cord could result in a
risk of fire or electric shock. Locate all cords so they
will not be stepped on, tripped over, or otherwise
subjected to damage or stress.
DC OUTPUT
This battery charger is designed to produce a 24 volt
DC output with an initial charge current of 20 amps.
ONLY 24 VOLT, 12 CELL, 168 TO 275 AMP-HOUR,
LIQUID ELECTROLYTE (WET) LEAD-ACID
BATTERIES SHOULD BE USED. The charge
current will decrease gradually to about 6 amps as
the battery reaches full charge and will remain there
until the charger turns off. As the battery ages, the
charge current may no longer decrease to the 6 amp
finish current. Liquid electrolyte batteries will
normally be charged to 2.5-2.6 volts per cell.
OPERATING INSTRUCTIONS
1. Connect AC supply cord to a properly grounded
230 volt, 50 Hertz, single-phase outlet.
2. Connect the DC output plug by grasping the
plug body and pushing it straight into the
receptacle until it is fully engaged. The BLACK
wire must be connected to battery negative (-),
Operating Instructions 2 01367F
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