Lester 17140 User manual

Operating Instructions 101487E
BATTERY CHARGER
MODEL 17140 TYPE 60LC20-8ET
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.
INITIAL INSTALLATION
Do not operate this charger with damaged cords.
Do not operate this charger if it has received a sharp
blow, was dropped or otherwise damaged in any
manner; refer to a qualified service agent.
Provide adequate ventilation for the batteries and
charger. The convection-cooled design requires an
unobstructed flow of cooling air for proper operation.
WARNING: HAZARD OF EXPLOSIVE GAS
MIXTURE. DO NOT DISCONNECT THE OUTPUT
CHARGING CONNECTOR WHILE THE CHARGER
IS OPERATING. THE RESULTING ARCING AND
BURNING WILL DAMAGE THE CONNECTORS
AND MAY CAUSE THE BATTERY TO EXPLODE.
IF THE CONNECTORS MUST BE DISCON-
NECTED BEFORE CHARGER AUTOMATICALLY
SHUTS OFF, TURN THE CHARGER OFF BY
DISCONNECTING THE POWER CORD, OR BY
PRESSING THE STOP BUTTON.
WARNING: KEEP DRY; DO NOT EXPOSE TO
RAIN, POWER WASH DETERGENTS, OR SPRAY.
NORMAL OPERATION
The instructions printed on the front panel of the
charger are for daily reference.
1. With the charger DC output cord disconnected
from the batteries, connect the power supply
cord to a properly grounded 120 VAC, 60 Hertz
outlet.
CAUTION: THIS CHARGER IS FOR USE
ONLY ON 30 CELL, 180-250 AMP-HOUR (18 HR.
RATE), 2.50 VOLTS PER CELL WET LEAD ACID
BATTERY SYSTEMS. BATTERIES IMPROPERLY
MATCHED WITH CHARGER MAY BURST,
CAUSING PERSONAL INJURY AND DAMAGE TO
BATTERIES OR CHARGER.
2. Connect the charger output connector to the
battery connector by grasping the plug body and
pushing straight into the battery receptacle until
fully engaged. The charger will automatically
turn on two to five (2-5) seconds after
connection if all connections are good and the
battery is not over discharged. Monitor ammeter
for initial charge rate.
DANGER: RISK OF ELECTRIC SHOCK! DO
NOT TOUCH UNINSULATED PORTIONS OF THE
OUTPUT CONNECTOR OR UNINSULATED
BATTERY TERMINALS.
The correct initial charge rate should indicate around
16 amps depending on battery condition and how
deeply discharged. The charge rate should
decrease to 10 amps or less during charge.
A frequent error when connecting twelve 6-volt
batteries together in series to produce 72 volts is to
install one or more of the 6 volt batteries with the

Operating Instructions 201487E
polarity reversed. This error prevents the charger
output from decreasing properly and damages the
reverse polarity installed battery. The charging
voltage measured while charging at the output
connector after a few hours of charging should
measure at least 63 VDC. If the measured voltage
is less, suspect one or more reverse polarity
installed battery. Carefully inspect and test the
battery system with an accurate voltmeter.
3. The charger turns off automatically when the
battery system is fully charged. Very deeply
discharged batteries can require up to 18 hours
for full recharge; for moderately used batteries,
12 to 16 hour recharge times are normal.
Disconnect output plug from battery connector if
unattended for two days or more in a row.
CAUTION: IN THE UNLIKELY EVENT THAT
THE CHARGER DOES NOT TURN OFF
AUTOMATICALLY, OVERCHARGING AND
POSSIBLE BATTERY DAMAGE MAY RESULT.
FOR BEST BATTERY LIFE, CHECK TO BE SURE
THE CHARGER HAS TURNED OFF PROPERLY
AFTER EACH CHARGE CYCLE.
STORAGE
When the machine is not in use, charge the batteries
once each week.
PROPER CARE OF 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
EYE SHIELDS AND CLOTHING 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 improperly hook up
the batteries 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 five
cycles. New batteries 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. Limited use of new batteries
will minimize the risk of cell reversals.
5. Maintain the proper electrolyte level by adding
water when necessary. Never allow the
electrolyte level to fall below the top of the
battery plates. Electrolyte levels fall 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. When the temperature falls below 65°F, the
batteries should be placed on charge as soon as
possible.
7. 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 frame.
8. Follow all operating instructions, cautions, and
warnings as specified in this manual and on the
charger case.

Operating Instructions 301487E
WIRING DIAGRAM
L2115S86
PARTS LIST FOR MODEL 17140
TYPE 60LC20-8ET 120 VAC / 60 HZ
PART NO. QTY. DESCRIPTION
21897S 1CASE ASSEMBLY
17145S 1TRANSFORMER ASSEMBLY
02390S 2CAPACITOR, 6 MFD, 660 VAC
16354S 2HEATSINK ASSEMBLY, W/ DIODES
08776S 1OUTPUT FUSE ASSEMBLY, DC
16369S 1AMMETER, 0-30 AMP
17160S 1ELECTRONIC TIMER KIT W/ STOP BUTTON
AND LOW VOLTAGE START
03894S 1INPUT BUSHING, 7K-2
02028S 1OUTPUT BUSHING, 7W-2
03574S 1CORDSET, AC, W15-15P PLUG
07755S 1CORDSET, DC, 1212, SB-5O GRAY, 108"
21893S 1CORDSET, DC, 1212, NO PLUG, 108"
10536S 1CORDSET, DC, 1212, SB-5O GRAY, 130"

Operating Instructions 401487E
L I M I T E D W A R R A N T Y
Lester Electrical warrants each new Lester Battery Charger for defects in material and workmanship for a period of two (2)
years from the date of manufacture of the complete unit. Repairs can be made at the Lester factory. To do so, first obtain a
"Return Material Authorization" number by calling the Service Department of Lester Electrical (402 477-8988) or by e-mailing
[email protected] and send the defective unit with transportation charges prepaid to:
Lester Electrical
625 West A Street
Lincoln, NE 68522-1794 USA
Attention: Service Department
RMA #
If the unit or parts are found in the reasonable judgment of Lester to be defective in material or workmanship, repair or
replacement will be made by Lester without charge for parts or labor. Repair or replacement will be at the discretion of Lester,
with replacements being made using current models or parts performing the equivalent function. Labor charges other than
those incurred at the Lester factory are not covered under this warranty. All expenses associated with delivering defective
items to the Lester factory and the expense of returning repaired or replaced items from the Lester factory to the owner will be
paid for by the owner. All warranty work accomplished at the Lester 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 Lester. Warranty on parts not manufactured by Lester, which include, but are not limited to, timers and
ammeters, is limited to the period specified in the original manufacturer's warranty.
This warranty does not cover any charger that has been subject to misuse, neglect, negligence, or accident, or operated in
any way contrary to instructions specified on the charger case and in the owner's manual. No claim of breach of warranty shall
be cause for cancellation of the contract of sale of any Lester charger. Lester assumes no responsibility for loss of time,
inconvenience, or other damage, consequential or otherwise, resulting from a defective charger. All implied warranties
(including merchantability) are limited in duration to the two years from date of manufacture warranty period.
Some states do not allow the exclusion or limitation of incidental or consequential damages; or limitations on how long an
implied warranty lasts, so the above limitations may not apply to you. This warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
Lester's obligation under this warranty is strictly and exclusively limited to the repair or replacement of defective items.
Lester issues this warranty in good faith and with full confidence in the workmanship and quality of Lester products.