BMW 730i Owner's Handbook Manual page 108

Ventilation at front
1 Knurled wheels for continuous opening and
closing of the outlets
2 Knurled wheels for adjusting the direction
of the airflow
Ventilation for cooling
Adjust the outlets so that cool air is directed
towards you, e.g. if the car's interior has
become hot.
Draught-free ventilation
Turn outlets so that the airflow passes the
occupants without striking their bodies directly.
Rear-seat area ventilation
1 Knurled wheel for continuous opening and
closing of the outlets
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1 Knurled wheels for continuous opening and
closing of the outlets
2 Levers for adjusting the direction of the air-
flow
*
3 Knurled wheels for setting the tempera-
ture:
> Turned towards blue: cooler
> Turned towards red: warmer
Microfilter/activated charcoal filter
The microfilter traps dust and pollen in the
incoming air. The activated charcoal filter in
addition removes gaseous pollutants from the
air entering the car. This combined filter is
changed during routine maintenance by BMW
Service or a workshop that operates to BMW
specifications and has suitably trained person-
nel.
You can call up further information in the Next
Service indicator, see page 76.