Precautions For Inspection And Maintenance; Precautions When Welding; Handling Battery - Komatsu D475A-5E0 Operation & Maintenance Manual

PRECAUTIONS FOR MAINTENANCE

PRECAUTIONS FOR INSPECTION AND MAINTENANCE

PRECAUTIONS WHEN WELDING

Welding operations must always be performed by a qualified welder and in a place equipped with proper equipment.
There is a hazard of gas, fire, or electrocution when performing welding, so never allow any unqualified personnel
to perform welding.

HANDLING BATTERY

Before inspecting or handling the battery, turn the key in the starting switch to OFF position.
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 or death, explosion, or fire, so
always observe the following.
Do not use or charge the battery if the battery electrolyte is
below LOWER LEVEL mark. This will cause explosion.
Always perform periodic inspection of the battery electrolyte
level, and add distilled water (or commercially available
battery filler solution) to UPPER LEVEL mark.
Do not use a dry wipe to clean the battery. A wet wipe will
prevent fire or explosion from 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 and may explode. In addition, the battery electrolyte
includes dilute sulphuric acid. Any mistake in handling may
cause serious personal injury or death, explosion, or fire, so
always observe the following.
When handling the battery, always wear protective
eyeglasses and rubber gloves.
If battery electrolyte gets into your eyes, immediately wash
your eyes with large amounts of fresh water. After that, get
medical attention immediately.
If battery electrolyte gets on your clothes or skin, wash it off
immediately with large amounts of water.
Removing battery cables
Before repairing the electrical system or performing electric welding, turn the starting switch OFF. Wait for
approximately 1 minute, then remove the negative (-) battery cable to stop the flow of electricity.
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SAFETY