Komatsu WA250PT-5H, Operation & Maintenance Manual

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SAFETY
Precautions for operation
Battery
2-25
Battery 0.
Battery hazard prevention 0.
Battery electrolyte contains sulphuric acid, and batteries generate flammable hydrogen gas, which may explode.
Mistaken handling can lead to serious injury or fire. For this reason, always observe the following precautions:
Do not use or charge the battery if the battery electrolyte
level is below the LOWER LEVEL line. This may cause an
explosion. Always check the battery electrolyte level period-
ically and add distilled water to bring the electrolyte level to
the UPPER LEVEL line.
When working with batteries, always wear safety glasses
and rubber gloves.
Never smoke or use any flame near the battery.
If you spill acid on your clothes or skin, immediately flush
the area with large amount of water.
If acid gets into your eyes, flush them immediately with
large amount of water and seek medical attention.
Before working with batteries, turn the starting switch to the
OFF position.
As there is a hazard that sparks will be generated, always do
as follows:
Do not let tools or other metal objects make any contact
between the battery terminals. Do not leave tools or other
metal objects lying around near the battery.
Always disconnect the negative (-) terminal (ground side)
first when removing the battery; when installing the battery,
connect the positive (+) terminal first, and connect the
ground last.
Attach the battery terminal securely.
Flammable hydrogen gas is generated when the battery is
charged, so remove the battery from the chassis, take it to a
well-ventilated place, and remove the battery caps before
charging it.
Tighten the battery caps securely.
Install the battery securely to the determined place.