Assisted starting (with jumper cables

Assisted starting (with jumper cables) Prior to assisted starting

10000264-en

Read and observe the section: "Assisted starting, safety instructions".

Switch off all consumers at the receiving machine (empty batteries) and switch the key-switch to 0.

Switch off all consumers at the supplying machine (charged batteries) and switch off the engine. The capacity of the supplying batteries must not be essentially smaller than that of the discharged battery.

A discharged battery can freeze in already at –10 °C. Before connecting the jumper cable, it is absolutely necessary to defreeze the battery. There is otherwise a risk of explosion.

Connecting the jumper cables

Connect the red jumper cable to the positive pole of the empty battery (1, Fig. 1), then to the positive pole of the charged battery (2). Connect the black jumper cable first to the negative pole of the charged battery (3), then to a bare-metal part of the machine (4).

Explosion hazard

When the negative terminal is connected to ground, a strong current flows through the jumper cables. Sparks produced in the contact area may ignite gases escaping from the discharged battery. The negative terminal must therefore be connected to ground as far away from the discharged batteries as possible. The non-insulated parts of the terminal clamps must not get into contact with each other. The jumper cable attached to the positive pole of the battery must moreover not get into contact with conducting parts of the machine:

Risk of short-circuit.

Do not lean over the batteries:

Risk of injury from caustic agents.

Fig. 1

Starting up the engines

Start up engine of supplying machine and run at high speed. Start up engine of receiving machine. If the engine fails to start up after 15 seconds, wait for one minute, then start up again. When engine has started up, proceed as follows: - switch on several consumers with high current demand, e.g. the complete lighting system, the blower at stage 3 and possibly also the air conditioner. This prevents voltage peaks being produced when detaching the jumper cable.

Voltage peaks may cause damage to electronic components. - Disconnect the jumper cables in the following order: - negative pole at receiving machine (4) - negative pole at supplying machine (3) - positive pole at supplying machine (2) - positive pole at receiving machine (1) - Switch the high-current consumers off again. - Run engine for about half an hour at low speed. The batteries are partially charged. Have the electrical system of the machine checked to determine why the batteries were discharged.