2 SAFETY AND ACCIDENT PREVENTION
2.18 MHL380 D
2.3.7 Electrical system
 Check the electrical system regularly. Have
all faults such as loose connections, blown
fuses and bulbs, or singed or worn away
wiring repaired by specialist personnel
immediately.
 Use only original fuses with the
recommended current rating.
 Work on electrical equipment must only be
performed by an electrical specialist or
trained persons under the supervision of an
electrician in accordance with electrical
requirements.
 When working on live parts, enlist the
assistance of a second person to press the
emergency stop or battery isolator switch in
the event of an emergency. Close off the
work area with a red-and-white safety
cordon and a warning sign. Use only
electrically insulated tools.
 Start by checking live parts to ensure they
are free of voltage. Then ground them and
short-circuit them. Isolate adjacent parts that
are under voltage.
 Disconnect the three plug connections on
the engine controller and the batteries
before working on the electrical system or
performing arc welding on the machine.
Loosen the negative pole of the battery first,
then the positive one. Connect the positive
cable of the battery to the adjacent
grounding bolt. When reconnecting the
battery, proceed in the opposite order.