Fig. 32 Coolant pre-heating
1
Operating panel
2
Connection for the coolant pre-heater
3
Power cable
4
Coolant pre-heating
5
Motor block
1.
Danger of fatal injury from electric shock!
Serious injury or death can result from a short-circuit in the electric coolant pre-heater.
➤ The power cable for the coolant pre-heater may only be plugged into an electrical socket
fitted with a protective earth.
➤ Have the coolant pre-heating and associated wiring checked according to the maintenance
schedule.
2. Connect the coolant pre-heater to the user's power socket with the power cable supplied.
7.5 Option od
Activating the battery trickle charging
The power supply voltage must be permanently connected as long as the compressor is to be op‐
erated in standby mode. Trickle charging the batteries ensures they are always in a condition to
start the portable compressor.
7
Initial Start-up
7.5
Activating the battery trickle charging
No.: 9_9570 07 USE
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
79
Option bb