Komatsu PC700LC-11, Operation & Maintenance Manual

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HANDLE BATTERY
When checking and handling the battery, turn the starting switch to OFF position and check that the system op-
erating lamp is not lit. Turn the battery disconnect switch to OFF position, and remove the key.
Danger of battery exploding
When the battery is being charged, flammable hydrogen gas is generated. Battery may explode. In addition, the
battery electrolyte includes dilute sulphuric acid. Any mistake in handling may cause serious personal injury, ex-
plosion, or fire, so always observe the following.
• Do not use or charge the battery if the battery electrolyte is below LOWER LEVEL mark. This may cause
an explosion. Always perform periodic inspection of the battery electrolyte level, and add the purified water
(such as a commercial battery fluid) to UPPER LEVEL mark.
• Do not use a dry cloth when cleaning the battery. Use a wet cloth to prevent a fire or explosion caused by
the static electricity.
• Do not smoke or bring any open flame close to the battery.
• Hydrogen gas is generated when the battery is being
charged, so remove the battery from the machine, take it
to a well-ventilated place, remove the battery caps, then
perform the charging.
• After charging, tighten the battery caps securely.
Danger from dilute sulphuric acid
When the battery is being charged, flammable hydrogen gas is
generated. Battery may explode. In addition, the battery elec-
trolyte includes dilute sulphuric acid. Any mistake in handling
may cause serious personal injury, explosion, or fire. Always
observe the following.
• When handling the battery, always wear protective eye-
glasses and rubber gloves.
• If battery electrolyte gets into your eyes, immediately wash
your eyes with large amount of fresh water. After that, get
medical attention immediately.
• If battery electrolyte gets on your clothes or skin, wash it
off immediately with large amount of water.
Danger of sparks
Sparks may be generated and they can cause a fire. Always observe the following.
• Do not let tools or other metal objects make any contact between the battery cables. Do not leave tools
lying around near the battery.
• When removing the battery cables, turn the starting switch to OFF position, and after checking that the sys-
tem operating lamp is not lit, set the battery disconnect switch key to OFF position and pull it out.
When removing the battery cables, remove the ground cable (negative (-) cable) first. When installing, con-
nect the positive (+) cable first, then connect the ground.
• Tighten the battery cable terminals securely.
• Secure the battery firmly in the specified position.
PRECAUTIONS WHEN USING HAMMER
When using a hammer, pins may come out or metal particles may be scattered. It is dangerous and may cause
serious personal injury or death. Always observe the following.
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SAFETY PRECAUTIONS FOR MAINTENANCE
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