Assisted starting (with jumper cables

Assisted starting (with jumper cables) Prior to assisted starting

Read and observe: “Assisted starting (with jumper cables), Safety instructions”.

• Secure the supplying and receiving machines if necessary (warning triangle, accident prevention, traffic safety). • Note the maximum capacity of the jumper cables. • The engine output of the receiving machine must not be greater than that of the supplying machine. • Switch off all consumers at the receiving machine (empty batteries) and switch the keyswitch 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 smaller than that of the discharged batteries.

A discharged battery can freeze at a temperature of –10°C. Before connecting the jumper cable, it is absolutely necessary to thaw the battery or it might explode.

10000264-en

Danger of explosion

Heavy current flows through the jumper cables when the negative terminal is connected. 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 touch each other. The jumper cable attached to the positive pole of the battery must never touch any conducting parts of the machine. Danger of short-circuits.

Do not lean over the batteries - Risk of injury from caustic agents.

Connecting the jumper cables

• Connect the red jumper cable to the positive pole of the empty battery (1, Fig. 1) 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 to be charged (4).

Fig. 1

Starting up the engines

• Start up engine of supplying machine and run at high speed. • Start engine of receiving machine. If the engine fails to start after 15 seconds, wait for one minute, then start again. • When engine has started proceed as follows: - Switch on several consumers with high current consumption, 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 that could damage electronic assemblies. - 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) - Remove the jumper cables from the NATO connectors and store them. - Switch the high-current consumers off again. - Run engine for about half an hour at medium speed. The batteries are partially charged. Have the electrical system of the machine checked. This can determine why the batteries were discharged.