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7-11
Nature of trouble
Deformation
Breakage
Sulfate
Decrease and
falling of specific
gravity
Rise of specific
gravity
Mixing of impurities
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Deformation of container,
lid or one touch cap
Â
Electrolyte leakage acco-
rding to breakage of cont-
ainer, lid or one touch cap
Â
Termination of connector
or pole post etc.
Â
Specific gravity drops and
capacity is decreased.
Â
Charge voltage rises rapi-
dly with immature gassing
in earlier stage but specific
gravity does not rise and
charge can’t be carried
out.
Â
May be easily detected by
measurement of the spec-
ific gravity.
Â
May be easily detected by
measurement of the spec-
ific gravity.
Â
Excessive temperature ris-
ing or external impact
Â
External impact, improper
handling, excessive vibrat-
ion
Â
Excessive temperature
rising or vibration/external
impact
Â
When left in state of disch-
arge or left long without
equalizing charge.
Â
Insufficient charge.
Â
When electrolyte is so de-
creased that plate is de-
posed.
Â
When concentration of
electrolyte rises.
Â
When impurities are mixed
in electrolyte.
Â
Rise of temperature due to
such trouble.
Â
When left long period with-
out refilling of water.
Â
Short circuit.
Â
Diluted sulfuric acid is
used in refilling.
Â
When the electrolyte level
excessively drops.
Â
Replace
Â
Replace or install a new
one
Â
Replace
Â
Need equalizing charge
Â
Need equalizing charge
Â
Need equalizing charge
Â
Adjust specific gravity
Â
Replace electrolyte
Â
Replace
Â
Refill water in regular per-
iod
Â
Replace
Â
Adjust specific gravity after
full charge.
Â
Refill distilled water.
Â
Decrease of capacity.
Â
Drop of charge and disch-
arge voltage.
Â
Odor of generated gas and
coloring of the electrolyte.
Â
Metals such as iron, copper,
nickel and manganese.
Â
Impurities such as sea
water, chloric acid, nitric
acid etc.
Â
Filling of impure water.
Â
Under a fully discharged
condition, pour out the
electrolyte. Then pour in
an acid of the specific
gravity higher by 0.03~0.05
than that of the drained
acid. Charge fully and
adjust the specific gravity to
the specified value.
S
S
ymptoms
Causes
Repair
TROUBLESHOOTING
7)