Chapter 4: Commissioning 35
Power supply
The ventilator can be supplied by two different power sources:
• Mains connection via power supply unit
• Internal battery
The ventilator automatically detects which power sources are available. If the device is
connected to a power supply unit, the power supply unit is used as the primary source
and the internal battery as the secondary source.
Mains operation
Mains operation means that the device is supplied with power by the power supply
unit. The device can remain connected to the mains continuously without posing a
risk. If inserted in the device, the internal battery is also charged.
Connect the device to the mains supply as follows:
C
B
A
A Power supply unit B Power supply unit holder with integrated strain relief
C Power supply unit cable
Figure 8: Assembling the power supply unit and power supply unit holder
1. Pull the power supply unit cable through the round opening on the power sup-
ply unit holder.
2.
Press the power supply unit into the power supply unit holder until you feel it
click into place.
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