SHB 803 en – Edition 2.4 * 803s314.fm 3-51
Maintenance
3.19 Electrical system
Specific safety instructions
• The battery contains sulfuric acid! This acid must not be allowed to come into contact
with the skin, the eyes, clothing or the machine
Therefore when recharging or working near the battery:
☞Always wear safety glasses and protective clothing with long sleeves
If acid is spilled:
☞Thoroughly rinse all affected surfaces immediately with plenty of water
☞Thoroughly wash any part of the body touched by the acid immediately with plenty of
water and seek medical attention at once!
• Especially when charging batteries, as well as during normal operation of batteries, an
oxyhydrogen mixture is formed in the battery cells – explosion hazard!
• Do not attempt to jump-start the machine if the battery is frozen or if the acid level is
low. The battery can burst or explode!
☞Replace the battery immediately
• Avoid open flames and sparks and do not smoke near open battery cells – otherwise
the gas produced during normal battery operation can ignite!
• Use only 12 V power sources. Higher voltages will damage the electrical components
• When connecting the battery leads, ensure that the poles +/− are not inverted,
otherwise sensitive electrical components will be damaged
• Do not interrupt voltage-carrying circuits at the battery terminals – sparking hazard!
• Never place tools or other conductive articles on the battery – risk of short circuit!
• Disconnect the negative (−) battery terminal from the battery before starting repair work
on the electrical system
• Dispose of used batteries properly
Servicing and maintenance at regular intervals
Before performing machine travel
☞Check every time before performing machine travel:
• Is the light system OK?
• Do the lights and the acoustic warning system work?
Every week
☞Check once a week:
• Electric fuses –see“Relays” on page 2-5
• Cable and grounding connections
• Battery charge condition –see“Battery” on page 3-52
• Condition of battery terminals
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