Minuteman 957740 User Manual

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36 VOLT AUTOMATIC
BATTERY CHARGER
PART NO. 957740
Specifications
AC Input:
108-128 Volts AC, 15 Amp, 60 Hertz, single-phase
DC Output:
36 Volts DC, 36 Amp
Connections:
6- or 9-ft. AC input cord with NEMA 5-15 grounded plug
8½- or 10-ft. DC output cord with polarized connector
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.
LOOK FOR THIS SYMBOL TO POINT OUT SAFETY PRECAUTIONS. IT MEANS:
BECOME ALERT—YOUR SAFETY IS INVOLVED.
IF YOU DO NOT FOLLOW THESE
SAFETY INSTRUCTIONS, INJURY OR PROPERTY DAMAGE CAN OCCUR.
Features
•
Patented electronic timer monitors battery state of charge while charging and automatically turns charger off as battery
reaches full charge
•
Compensates automatically for AC input line voltage variation by high reliability ferroresonant transformer design. Supply
voltage variation + 10% from nominal, +
1% maximum battery charger voltage variation, decreasing to + ½% at finish rate
with constant electrolyte temperature. No taps or rate controls to set.
•
Automatic decrease of charge rate for superior battery life through good equalization of cells and low water use rate.
•
Silicon diodes with inherent surge protection operated at a conservation percentage of their rating.
•
Convection-cooled design for maximum reliability and minimum maintenance.
INTRODUCTION
This automatic battery charger is designed to
recharge deep-cycle, lead-acid batteries. A
ferroresonant transformer is used to provide a highly
reliable, line compensating unit with a minimum of
moving parts, designed for long, trouble-free service.
A patented electronic timer turns the charger on and
off automatically. This electronic timer determines
full charge of the batteries by measuring the rate at
which the battery voltage increases during charge.
When the voltage stops rising, the battery is full
charged and the charger turns off.
INITIAL INSTALLATION
The AC line to which the charger is to be connected
must be capable of supply 15 amperes to this
charger.
CAUTION: USE ONLY ON CIRCUITS
PROVIDED WITH A MAXIMUM OF 20 AMP
(15 AMP IN CANADA) BRANCH CIRCUIT
PROTECTION IN ACCORDANCE WITH THE
NATIONAL ELECTRICAL CODE ANSI/NFPA 70
AND ALL LOCAL CODES AND ORDINANCES.
IMPROPER CIRCUIT PROTECTION MAY RESULT
IN A FIRE.
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Minuteman 957740 Specifications

General

Brand	Minuteman
Model	957740
Category	Battery Charger
Language	English

Summary

Specifications

AC Input

Details the AC input voltage, amperage, and frequency.

DC Output

Specifies the DC output voltage and amperage.

Features

Patented Electronic Timer

Monitors battery state of charge, automatically turns charger off.

INITIAL INSTALLATION

Branch Circuit Protection

Use circuits with max 20 AMP protection per NEC/local codes.

GROUNDING INSTRUCTIONS

Flammable Materials Warning

Do not use near flammable materials or vapors.

Electric Shock Prevention

Keep charger dry; do not expose to rain, spray, or power wash.

NORMAL OPERATION

Battery Type Compatibility

Use only for 36-volt, 18-cell series connected wet lead-acid systems.

PROPER CARE OF DEEP-CYCLE MOTIVE POWER BATTERIES

Safety Precautions

Wear protective gear; avoid metal objects across terminals to prevent arcing/explosion.

Excessive Discharge Warning

Avoid excessive discharge; it can cause polarity reversal and cell damage.

Electrolyte Maintenance

Maintain electrolyte levels with distilled water, add AFTER full charge.

TROUBLESHOOTING GUIDE

General Troubleshooting Precautions

Read guide completely; do not disassemble; use qualified agent for service.

Malfunctioning Charger Warning

Do not operate a malfunctioning charger to avoid injury or damage.

Charger Not Turning On

Check AC plug, reconnect, test outlet for live power.

WIRING DIAGRAM

Diagram Components

Illustrates connections for capacitor, relay, timer, transformer, fuse, and ammeter.

PARTS LIST FOR 36 VOLT AUTOMATIC BATTERY CHARGER

Component Identification

Lists part numbers, quantities, and descriptions of charger components.

LIMITED WARRANTY

Exclusions from Warranty

Excludes semiconductor parts, misuse, neglect, accident, or operation contrary to manual.