Maeda CC1485S-1, Operation Manuals, Page: 51 / 370

43
4.2 PRECAUTIONS DURING MAINTENANCE
CAUTIONS DURING WELDING REPAIR
Conduct welding operation in a location with good facility, and, only authorized personnel are
permitted to be engaged in the welding work.
Unauthorized personnel are strictly prohibited since risks such as gas generation, fire and
electrical shock are present when welding.
CAUTIONS WHEN HANDLING BATTERY
Before starting inspection of the battery and handling, set the
starter switch to OFF position and the disconnecting switch
inside the battery box to OFF position to shut off the power
supply circuit in order to prevent the system from
unexpectedly activated during inspection and maintenance
servicing.
Because the battery produces hydrogen gas, sparks around
the battery can cause an explosion.
Moreover, the battery solution contains diluted sulfuric acid.
Wrong handling of it may cause a bodily accident, explosion
and fire, and therefore always observe the following
precautions:
• AVOIDING THE RISK OF BATTERY EXPLOSION
• If the battery fluid level decreases to the LOWER LEVEL
or further below, do not use the battery or recharge it.
Otherwise, an explosion may occur.
Never fail to conduct the regular inspection of battery
fluid level and refill purified water (such as battery
replenisher available on the market) to the UPPER
LEVEL.
• Do not smoke or use fire near the battery.
• During recharging the battery, it generates hydrogen gas
that is flammable.
Before recharging it, dismount if from the Machine and
conduct the recharging in a well ventilated place. During
the recharging process, remove the battery cap.
• Securely tighten the battery cap afterwards.
• AVOIDING THE RISK OF DILUTED SULFURIC ACID
• Always wear protective glasses and rubber gloves before
handling the battery.
• If the battery fluid enters your eyes, wash immediately
with water and see a doctor as soon as possible.
• If the battery fluid contacted clothing or skin, immediately
wash away by huge quantity of water.
• DISCONNECT BATTERY TERMINAL
Before starting the repair work of electric system and
performing a welding operation, first turn the starter switch
OFF, wait for about one minute, and then disconnect the
battery terminals to interrupt the flow of electric current.
• DANGER OF SPARKING
To prevent sparking, strictly observe the following
precautions:
• Never allow such a metallic object as a tool to come in
contact with battery terminals. Do not leave tools or other
object around the battery.
• When removing the battery, be sure to disconnect the
grounding (-) end terminal first. Conversely for mounting
it again, first connect the positive (+) end terminal and fix
the grounding end (-) terminal finally.
• Fix the battery terminal securely.
• Fix the battery body to the specified position securely.