JLG DVSP Series Service Manual - Manual (Page 52)

SECTION 3 - BASE COMPONENTS
3-22 – JLG Lift – 3121136
3.7 BATTERY/BATTERY CHARGER -
SERVICE PROCEDURES
Battery Low Voltage Warning Indicators
The Platform Control Console and Ground Control Station indicate battery low voltage at three (3) Warning Levels.
Diagnostics
Continued operation of the machine in a low voltage state
will damage (sulfate) the batteries. Eventually this will
cause shorter cycle times before recharge is needed as
well as progressively shorter charging time before 100%
charge complete light illuminates.
1. If the cycle time of your machine becomes drasti-
cally reduced try the following solutions:
a. Cycling the battery charger several times after
the green light comes on will break through
most sulfated batteries. Do this by plugging the
charger into the proper receptacle and charging
until a full charge is indicated. After a full charge
is indicated unplug the battery charger and plug
it in again. Repeat this procedure several times.
b. Remove the batteries and place them, individu-
ally, on a 12 volt automotive type charger that
supplies a constant high current. This should
overcome any sulfated batteries.
NOTE: When battery voltage becomes too low the machine
will begin to pull to the left when driven.
Battery Condition Testing
NOTE: Batteries in storage should be kept at 12.5V or
higher.
Clean batteries terminals, using a non-metallic brush and
a solution of baking soda and water. RInse with clean
water. After cleaning, thoroughly dry batteries and coat
battery terminals with an anti-corrosion compound.
Before testing for battery condition, the open circuit voltage
should be taken from each battery. If the voltage of the bat-
teries differs by 0.3 volts or more, the lower voltage battery
should be replaced.
Table 3-1. Battery Low Voltage Warning Indicators.
IMPORTANT: The 3 Levels of Battery Low Voltage Warning indication will only activate on DVL/DVSP machines with version 29 or later Ground Con-
trol Module software (implemented 8/2004). However, machines with earlier versions of software must follow the same LED/BAR indicator guide-
lines and battery charging cycles to maximize battery life.
WARNING
LEVEL
INDICATOR LOCATION
RESULT
ACTION REQUIRED TO
CLEAR FAULT PLATFORM CONTROL LED GROUND CONTROL LCD
LEVEL-1
• 3 LEDs/BARS Flashing with
an audible beep.
• Machine will Operate - No
Control Functions Locked
Out.
Charge batteries to a level of four
(4) LEDs/BARS or more before
operating.
LEVEL-2
• 2 LEDs/BARS Flashing with
an audible beep.
• Platform Lift-UP Function is
Locked Out.
Charge batteries for a minimum
of four (4) continuous hours or
eight (8) LEDs/BARS lit before
operating. (a)
LEVEL-3
• 1 LED/BAR Flashing with an
audible beep.
• Drive and Platform Lift-UP
Functions Locked Out.
Charge batteries for a minimum
of four (4) continuous hours or
eight (8) LEDs/BARS lit before
operating. (a)
NOTE: (a) To maximize battery life, it is recommended that the factory supplied batteries be charged continuously for a minimum of 4 hours or
until 8 bars are lit on the ground station LCD Display before operating the machine. When drained to Warning Level 2 or 3, batteries
must be charged until 8 bars are lit on the ground station LCD display to clear the fault code.
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38
38
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39
39
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