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.
Starting the engine
1. Start the engine of the assisting vehicle and run at high speed.
2. Start the compressor engine.
Upon a successful start, run both engines run for approximately 10 - 15 minutes.
This is important, in particular for fully discharged batteries. They will pick up little current only
in the beginning and have a high internal resistance. Any voltage peaks occurring in the en‐
gine generator in this state can be attenuated only by the battery of the assisting vehicle. The
engine electronics, in particular, of the machine is sensitive to high voltages and could be
damaged easily.
Disconnecting the battery jumper cables
1. Stop the engine of the assisting vehicle.
2. Disconnect the jumper cables in the reverse order, first negative (-) then positive (+).
3. Place the pole caps.
4. Close the maintenance panels and/or bonnet.
A stop of the compressor engine as soon as the cables are disconnected could indicate ma‐
jor damage to the alternator or battery to be repaired by a specialized workshop.
7.4.2 Option ba
Starting up low-temperature equipment
➤ Ascertain which low temperature equipment is fitted to the machine.
Operating the coolant pre-heater:
The engine coolant can be pre-heated to improve starting under cold conditions.
The connection for the mains supply is located on the right side of the machine (see illustration).
7
Initial Start-up
7.4
Low-temperature operation (winter)
62
Operator Manual Screw Compressor
MOBILAIR M27
No.: 9_9547 13 USE
Option bb
