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You must make sure to clear of explosive hydrogen gas in the cells before repairs. Be
careful not to drill to far into the cell and damage the unit. During drilling operation make
sure lead curls produced do not contact opposite cell poles and cause a spark.
d.
Upon completion of drilling the intercell connectors, can be lifted off.
e.
Lifted off the failure cell from circuit after removing of intercell connector.
f.
Installing new cell and connector.
g.
With surfaces properly cleaned and neutralized, position the connectors.
h.
Place damp rags around each lead head. Hold tip of the welder in center of post move welder
completely around top of post and out to the area where the post meets the connector. Move
welder back to center of post and add molten lead until area is filled to top of connector. Again,
move welder completely around area, with tip on molten lead. If you have jig for welding
connector, have easier and better welding work.
i.
When replacing electrolyte in a repaired cell, use sulphuric acid of the same specific gravity that
is found in the balance of the battery.
j.
Finally, rejoin connector covers and one-touch caps to the cells.
Summary of daily maintenance
Avoid overcharge. After discharge, charge the batteries immediately. The standard frequency
a.
of equalizing charge is more than once every month.
b.
Check the electrolyte level once a week. If found decreased, replenish distilled water up to the
specified level.
The top surface of battery cells should be kept clean and dry.
c.
Be sure to keep open the cover of battery housing tray during charge.
d.
e.
Never draw near open fires such as lighted cigarettes or burning matches during charge.
Others
(3)
Storage of batteries
When batteries are stored, keep them distant from room heaters or other heat generating
sources. Clean, cool and dry place where no direct sunlight is directed is suited for battery
storage. Before putting into storage, it is important to charge the batteries and keep the
electrolyte level at the specified level. When the temperature in storage location is higher than
20
C, check the specific gravity once a month, and when lower than 20 C, check it once every
two months. If the measurements show values lower than 1.230(20 C), it is required to charge
the battery in accordance with the method described in NORMAL CHARGE.
M
M
aintenance record
It is recommended to keep maintenance record in order to know the operational conditions of
batteries. Daily charge and discharge, equalizing charge requirements, and water replenishment
requirements can be clarified at a glance. Measurements of specific gravity and temperatures
once every two to four months after equalizing charge and maintenance thereof will serve for
battery health diagnosis.
Electrolyte temperature
The operating temperature range of batteries is -10~45 C(temperature of electrolyte). If the
batteries are exposed to cold atmosphere in discharged condition, the electrolyte may freeze, and in
extreme cases, the capacity will be decreased, but, if not frozen, no adverse effects will be exerted
over the life. Contrarily if the temperature is high, especially if used at above 55 C, the battery life
will be considerably shortened. Care must be taken so that the temperature during charge will be
maintained at 55 C or lower. Even under unavoidable circumstances it should not exceed 55 C.
7-10
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