Minuteman 957740 Manual Download Page 4

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31218C

charger does not turn off within the specified
time.

As batteries age, the charge rate may no longer
decrease to the 6 to 10 amp finish rate.  This is
normal; as battery cells wear out, they weaken
resulting in a lower than normal finish voltage.
However, the charger will still determine when
the battery is as charged as it can be and then
turn off.  Even though they are properly charged,
older batteries will gradually lose capacity, and
should be replaced when they will no longer
perform as required.

WARNING:  DO NOT LEAVE THE CHARGER

OUTPUT CONNECTOR CONNECTED WHILE
UNATTENDED FOR TWO (2) OR MORE DAYS IN
A ROW.  SEVERE OVERCHARGING AND
POSSIBLE DAMAGE TO THE BATTERIES WILL
RESULT IF THE CHARGER ELECTRONIC TIMER
KIT SHOULD FAIL AND NOT TURN OFF, OR
TURN BACK ON.
5.

After the charger has been turned off,
disconnect the input plug from the receptacle by
grasping the plug body and pulling the plug
straight out of the receptacle.

WARNING:  TO AVOID DAMAGE TO THE

INPUT PLUG AND CORD, DO NOT PULL ON THE
CORD.

BATTERY STORAGE MAINTENANCE
When the machine is not in use, charge the batteries
once a week; disconnect the plug at the end of the
charge.

PROPER CARE OF DEEP-CYCLE MOTIVE
POWER BATTERIES
Motive power batteries are subjected to severe
deep-cycle duty on a daily basis.  Although these
batteries are designed to withstand such duty, the
following precautions must be observed to obtain
good performance and maximum cycle life.

CAUTION:  ALWAYS WEAR PROTECTIVE

CLOTHING AND EYE SHIELDS WHEN WORKING
WITH BATTERIES.  BATTERIES CONTAIN ACIDS
WHICH CAN CAUSE BODILY HARM.  DO NOT
PUT WRENCHES OR OTHER METAL OBJECTS
ACROSS THE BATTERY TERMINAL OR
BATTERY TOP.  ARCING OR EXPLOSION OF
THE BATTERY CAN RESULT.
1.

When installing new batteries, be sure the
polarity of each battery and overall battery pack
is correct.  Due to the electrical characteristics of
this charger, it is possible to hook up the
batteries improperly and not blow the fuse when

charging. Battery and/or charger damage can
result.

2.

New batteries should be given a full charge
before their first use because it is difficult to
know how long the batteries have been stored.

3.

Limit the use of new batteries for the first 20
cycles.  New batteries and older batteries that
have been in storage are not capable of their
rated output until they have been discharged
and charged a number of times.

4.

Do not excessively discharge the batteries.
Excessive discharge can cause polarity reversal
of individual cells resulting in complete failure
shortly thereafter.  Heavily discharging (over
60%) new batteries before they have been
broken in (approximately 20 cycles) can cause
permanent cell damage, resulting in reduced
energy capacity and shortened life.

5.

Maintain the proper electrolyte by adding water
when necessary.  Distilled or deionized water is
free of contaminants and preferred for this use.
Never allow the electrolyte level to fall below the
tope of the battery plates.  Electrolyte levels
lower during discharge and rise during charge.
Therefore, to prevent the overflow of electrolyte
when charging, it is mandatory that water be
added to cells AFTER they have been fully
charged; do not overfill.  Old batteries require
more frequent additions of water than do new
batteries.

6.

Hard crystalline sulfates form when batteries in
storage are not maintained in a charge active
state.  Internal self-discharge can bring about
the start of this condition in as little as three days
in warm temperatures.  Batteries allowed to sit
unmaintained in storage will self-discharge,
sulfate to various degrees, and lose capacity.
Repeated charging without using the batteries
between charges may recover some of the lost
power, range, and life, but some permanent loss
should be expected.

7.

When the temperature falls below 65

°

F, the

batteries should be placed on charge as soon
after use as possible.  Cold batteries require
more time to fully recharge.

8.

The tops of the batteries and battery hold-downs
must be kept clean and dry at all times to
prevent excessive self-discharge and flow of
current between the battery posts and framer.
Electrolyte spilled on the batteries never dries or
evaporates and must be cleaned off.

9.

All connections to batteries that are bolted must
be maintained clean and tight.  Due to heating
and discharge rates, bolted connections loosen
over time.  Re-tighten the connections twice
yearly to the manufacturer's specified torque.

Summary of Contents for 957740

Page 1: ...inish 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 ...

Page 2: ...CAN RESULT IN A RISK OF ELECTRIC SHOCK The conductor with insulation having an outer surface that is green with or without yellow stripe s is the equipment grounding conductor If repair or replacement of the electric cord or plug is necessary do not connect the equipment grounding connector to a live terminal Refer to a qualified service agent Battery chargers equipped with a grounding plug as ill...

Page 3: ...te will decrease to 6 to 10 amperes for the last few hours of charge if all battery cells test good During charge the battery voltage increases gradually causing the charge rate to decrease Good battery cells should each rise to approximately 2 5 volts DC causing the charge rate to reduce to less than 10 amps Each cell accepts charge differently normal charging with the ammeter reading in the 6 to...

Page 4: ... to know how long the batteries have been stored 3 Limit the use of new batteries for the first 20 cycles New batteries and older batteries that have been in storage are not capable of their rated output until they have been discharged and charged a number of times 4 Do not excessively discharge the batteries Excessive discharge can cause polarity reversal of individual cells resulting in complete...

Page 5: ... the event one or both rectifier diodes fail or a reverse polarity connection is made to the batteries Check the fuse assembly visually for an open or blown fuse link If both half links of the fuse assembly blow as soon as the DC output plug is connected to the battery connector the polarity of the batteries may be reversed If no battery or connector maintenance has been performed prior to the fus...

Page 6: ... FUSE ASSEMBLY 16823S 1 AMMETER 50 AMP W CORNER MOUNTING STUDS 24840S 1 TIMER KIT 36 VDC 120 VAC 04484S 1 RELAY FOR ELECTRONIC TIMER 23385S 1 RELAY FOR ELECTRONIC TIMER 04484S 1 TIMER KIT RELAY 36 VDC SPSTNO 120 VAC 02028S 1 CORDSET BUSHING 7W 2 FOR 14 3 INPUT CORDSET 02008S 1 CORDSET BUSHING 8P 2 FOR 10 2 OUTPUT CORDSET 02506S 1 AC CORDSET 14 3 72 W 125V 15A PLUG 08329S 1 DC CORDSET 10 2 108 W SB...

Page 7: ...ctory to the owner will be paid for by the owner All warranty work accomplished at the Minuteman factory will be completed with a reasonable time after receipt of defective items This warranty does not cover any semiconductor parts such as diodes which are vulnerable to electrical overloads beyond the control of Minuteman This warranty does not cover any charger that has been subject to misuse neg...

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