Precautions For Inspection And Maintenance; Precautions When Welding; Handling Battery - Komatsu PC308USLC-3E0 Operation & Maintenance Manual

PRECAUTIONS FOR MAINTENANCE

PRECAUTIONS FOR INSPECTION AND MAINTENANCE

PRECAUTIONS WHEN WELDING

Welding operations must always be carried out by a qualified welder and in a place equipped with proper equipment.
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

Before inspecting or handling the battery, turn the key in the starting switch to the 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, explosion, or fire, so always
observe the following.
Do not use or charge the battery if the battery electrolyte 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.
Do not smoke or bring any 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 carry
out 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, explosion, or fire, so always
observe the following.
When handling the battery, always wear protective goggles
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 carrying out electric welding, turn the starting switch OFF. Wait for
approx. 1 minute, then remove the negative (-) battery cable to stop the flow of electricity.
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SAFETY