Yale 524150797, Maintenance Manual

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Figure 12. Daily Battery Report
ADDING WATER TO BATTERY
NOTE: Some batteries have sealed cells. These
batteries do not need water added to the electrolyte.
Some water is lost from the electrolyte of each cell
during the charge and discharge cycle when the
battery is in service. Check the electrolyte level daily.
Some service persons check some of the cells each
day so all cells are checked each week. If the level of
the electrolyte goes below the level of the top of the
separators for the plates, the cell can be damaged.
KEEPING THE ELECTROLYTE LEVEL WITHIN THE
CORRECT LIMITS IS THE MOST IMPORTANT ITEM
OF BATTERY MAINTENANCE.
See the instructions from the manufacturer of your
battery for the operating level of the electrolyte. Always
use distilled water. If you add distilled water, wait 5
minutes before measuring the specific gravity with a
hydrometer. DO NOT add water to a cell before or
during the charging cycle; water must be added after
the charging cycle. If water is added before the
charging cycle, the electrolyte level may rise, which
will cause electrolyte to be forced out of the vent plugs.
The electrolyte can flow out of the cell through the fill
hole. The correct electrolyte level is shown in
Figure 13.
1. FILL TUBE
2. BOTTOM OF FILL TUBE
3. CELL COVER
4. MAXIMUM LEVEL OF ELECTROLYTE
5. MINIMUM LEVEL OF ELECTROLYTE
6. PLATE PROTECTOR
7. TOP OF SEPARATORS
Figure 13. Electrolyte Level
Battery Maintenance 2240 YRM 0001
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