28 - FORM NO. 56043042 / Whirlamatic
™
2700 / BHS 7014
ELECTRICAL SYSTEM
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BATTERY TESTING
A battery problem is usually recognized by the machine operator, as a decrease in the machine’s running time. This condition is usually
caused by one (or more) “dead cell” in the battery system- that is, one (or more) cell that is putting out less voltage than the other cells.
Note: Always charge batteries before testing.
There are 2 ways to find a dead cell:
•
Use a hydrometer to check the specific gravity (or “state of charge”) of the fluid in each cell. A dead cell is one that reads 50 points
(or more) lower than the other cells.
•
Use a voltmeter to check the voltage of each battery with the pad drive motor running. The battery with the dead cell will read 1
or 2 volts lower than the other batteries in the system.
If the batteries in the machine are more than 1 year old, it’s usually best to replace the whole set, rather than replacing just one battery.
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BATTERY SPECIFICATIONS
Use a combination of multiple 2-volt cell units to construct a 36 Volt DC battery pack system.
Nilfisk-Advance recommended battery pack capacity is a 395 AH @ 20 Hour Rate deep cycle battery system. Note: The battery pack
must fit the battery compartment size listed below.
Battery compartment size
Height
17-1/2 inches (44 cm)
Width
24-1/2 inches (62 cm)
Length
22 inches (56 cm)
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BATTERY CHARGER SPECIFICATIONS
Use a 36 Volt DC output charger matching the AC input line voltage supply to be used.
Always when selecting a battery charger follow the recommendation of the battery supplier to match the proper charger DC output
amperage to the amp/hour rating batteries being installed. This will prevent the battery pack from being over or under charged.
The recommended 395 AH battery should be matched to a 36V, 25 or 36 Amp output charger.
revised 2/02
