Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

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PRECAUTIONS FOR MAINTENANCE
SAFETY
2-38
PRECAUTIONS FOR INSPECTION AND MAINTENANCE 2
PRECAUTIONS WHEN WELDING
Welding operations must always be carried out by a qualified welder and in a place equipped with proper equip-
ment. There is a hazard of gas, fire, or electrocution when carrying out welding, so never allow any unqualified
personnel to carry out welding.
HANDLING BATTERY
q
Danger of battery exploding
When the battery is being charged, flammable hydrogen
gas is generated and may explode. In addition, the battery
electrolyte includes dilute sulphuric acid. Any mistake in
handling may cause serious personal injury, explosion, or
fire, so always observe the following.
q
Do not use or charge the battery if the battery electro-
lyte is below the LOWER LEVEL mark. This will cause
explosion. Always carry out periodic inspection of the
battery electrolyte level, and add distilled water (or
commercially available battery filler solution) to the
UPPER LEVEL mark.
q
Do not smoke or bring any flame close to the battery.
q
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 carry out the charging.
q
After charging, tighten the battery caps securely.
q
Danger from dilute sulphuric acid
When the battery is being charged, flammable hydrogen
gas is generated and may explode. In addition, the battery
electrolyte includes dilute sulphuric acid. Any mistake in
handling may cause serious personal injury, explosion, or
fire, so always observe the following.
q
When handling the battery, always wear protective
goggles and rubber gloves.
q
If battery electrolyte gets into your eyes, immediately
wash your eyes with large amounts of fresh water.
After that, get medical attention immediately.
q
If battery electrolyte gets on your clothes or skin, wash
it off immediately with large amounts of water.