Fig. 27 Jumper cable connection diagram
a Assisting vehicle battery (external donor
battery)
b Engine battery (receiving battery)
1 Positive (+) terminal starting assistance
2 Positive (+) terminal of the machine battery
3 Bare metal point on the engine block
(earth)
4 Negative (-) terminal of assisting vehicle
battery
Complying with safety warings
1.
Fault in starting aid process!
➤ Connect batteries of the same voltage only.
➤ Ensure that machine and assisting vehicle do not touch.
➤ Switch off all consumers prior to connecting and disconnecting the batteries.
➤ Only use battery jumper cables of sufficient diameter and with insulated terminal clamps.
➤ Observe the instructions provided with the battery jumper cables.
➤ Keep jumper cables away from rotating parts.
➤ Avoid short-circuits due to incorrect poling and/or bridging with tools.
➤ Do not bend over the battery when attaching jumper cables.
➤ Do not attempt to start the machine if its battery is frozen. Allow the battery to thaw first.
➤ Do not try to start the machine with a boost charger.
2. Comply with the safety instruction shown when using starting aids and starter batteries.
Preparations
1. Park the assisting vehicle in close distance to the engine, without their bodywork touching each
other.
2. Stop the engine of the assisting vehicle.
3. Open the accesses to the batteries (remove maintenance panels/bonnet and pole caps).
4. Switch off all power consumers.
Connecting the battery jumper cables
1. Connect the positive terminals 2
and 1 .
2.
Explosion hazard!
A spark may ignite an explosive gas mixture.
➤ Do not, under any circumstances, connect the negative pole of the assisting machine to
the negative pole of the battery in the machine to be started.
This can cause sparks when connecting and disconnecting.
➤ Work with caution.
3. Connect the minus pole of the assisting battery 4
to a bare metal point on the compressor en‐
gine 3 to be started as far away from the battery as possible.
7 Initial Start-up
7.4 Low-temperature operation (winter)
78
Operator Manual Screw Compressor
M27 No.: 9_9548 05 USE
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