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AC Input:
DC Output:
Connections:
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.
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.
• 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,
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.
www.minutemanintl.com
36 VOLT AUTOMATIC
BATTERY CHARGER
PART NO. 957740
108-128 Volts AC, 15 Amp, 60 Hertz, single-phase
36 Volts DC, 36 Amp
6- or 9-ft. AC input cord with NEMA 5-15 grounded plug
8½- or 10-ft. DC output cord with polarized connector
DO NOT DISCARD THIS MANUAL AFTER READING.
lead-acid
batteries.
Specifications
Features
INITIAL INSTALLATION
The AC line to which the charger is to be connected
A
must be capable of supply 15 amperes to this
charger.
CAUTION:
PROVIDED WITH A MAXIMUM OF 20 AMP
(15 AMP
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.
1

Š
USE
ONLY
IN
CANADA)
BRANCH
ON
CIRCUITS
CIRCUIT
31218C

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Summary of Contents for Minuteman 957740

  • Page 1  Š 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.
  • Page 2: For Storage

    The use of an extension cord with the charger illustrated in Figures B and C, may be used to should be avoided. The use of an improper connect this plug to a two-pole receptacle as shown extension cord could result in a risk of fire or electric in Figure C if a properly grounded outlet is not shock.
  • Page 3 1. With the charger DC output cord disconnected During charge, the battery voltage increases from the batteries, connect the input plug to a gradually causing the charge rate to decrease. properly grounded 120 volt, 60 Hertz outlet with Good battery cells should each...
  • Page 4: Proper Care Of Deep-Cycle Motive Power Batteries

    charger does not turn off within the specified charging. Battery and/or charger damage can time. result. As batteries age, the charge rate may no longer 2. New batteries should be given a full charge decrease to the 6 to 10 amp finish rate. This is before their first use because it is difficult to normal;...
  • Page 5: Charger Does Not Turn On

    10. Follow all operating instructions, cautions, and diodes fail, or a reverse polarity connection is warnings as specified in this manual, on the made to the batteries. charger, and in your equipment owner manual. Check the fuse assembly visually for an open or blown fuse link.
  • Page 6: Wiring Diagram

    WIRING DIAGRAM PARTS LIST FOR 36 VOLT AUTOMATIC BATTERY CHARGER PART NO. 957740 120 VAC / 60 HZ PART NO. QTY. DESCRIPTION 31236S CASE ASSEMBLY 17095S TRANSFORMER ASSEMBLY 02390S CAPACITOR, 6 MFD, 660 VAC 16946S HEATSINK ASSEMBLY W/ 2 DIODES IN PARALLEL...
  • Page 7 Minuteman warrants each new Battery Charger for defects in material and workmanship for a period of one (1) year from the date of manufacture of the complete unit. Repairs can be made at the Minuteman factory. To do so, send the defective unit with transportation charges prepaid to: Minuteman, Inc.