Yale MPB040-E, Manual

Page: 68 / 130

Battery Voltage High indicates the charger is sens-
ing it is connected to a battery pack with a voltage rat-
ing greater than 24 volts. Verify the battery pack is the
correct voltage.
Battery Polarity Reversed indicates an incorrect
connection of the battery charger to the battery pack.
Verify charger connections.
Output Overload indicates the charger sensed a high
current draw during the charging cycle. Verify there is
no load on the batteries during charging.
Charge Level Unbalanced indicates some batteries
are at a much higher state of charge than other bat-
teries in the battery pack. Check the condition of each
battery.
Excessive Charging Time error occurs when the
preset maximum charge time has been exceeded.
Verify there is no load on the battery pack during
charging. Verify all batteries are in good condition and
will accept a charge.
Excessive Overload error occurs if a heavy load is
placed on the battery pack during charging and the
charger senses a decreasing battery voltage. Remove
external load.
Excessive Discharged error occurs when a battery
pack will not reach 21 volts within five hours of charg-
ing.
Battery Pack Troubleshooting
WARNING
Disconnect the charger from the AC power source
before proceeding.
Always wear protective gear including eye protec-
tion and suitable gloves when servicing battery
packs.
NOTE: For general information about battery mainte-
nance and procedures, refer to Industrial Battery
2240YRM0001.
1. Measure the specific gravity (SG) level for each
battery cell (after a charging cycle).
After a charging cycle, the SG measurement for each
cell should be 1.265 or greater.
From cell to cell within one battery: The SG measure-
ments should not vary more than 0.020. If variance is
greater than 0.020, it is recommended that the battery
be replaced with the same type of battery as the other
three batteries in that pack.
From battery to battery within one battery pack: The
SG measurements should not vary more than 0.050.
If one of the batteries has an SG reading 0.050 below
the other three batteries and the voltage is less than
6.3VDC after allowing the batteries to set four hours
without any load, it is recommended that the battery
with lowest SG be replaced with the same type of bat-
tery as the other 3 batteries in that pack.
WARNING
DO NOT overfill battery cells.
2. Verify water level in each cell of each battery:
• Before Charging: Only add minimal amount
of distilled water to cover top of plates if
needed.
• After Charging: Add distilled water as nee-
ded to fill to the bottom of cell opening.
3. Battery Replacement: Each battery manufacturer
has a specific "charge set-up" that will give your
truck the best battery life and drive time for your
truck. If the "charge set-up" is not correct, you can
damage the batteries and will not get the full per-
formance you expect. Make sure that the battery
charger is set to the proper charging mode for
your battery pack.
• DO NOT mix manufacturers or battery
types in the power pack
• It is not recommended to change out bat-
teries independently. All batteries should
be changed together when battery pack is
updated.
Battery Charger (Accusense by DPI
®
)
2200 YRM 1007
44