BMW F48 - Page 53

F48�General�Vehicle�Electronics
5.�Heating/Air�Conditioning�Systems
49
Two�microfilters�are�installed�in�the�F48.�The�BMW�repair�instructions�must�be�followed�for�the
replacement�of�the�microfilters.
5.1.4.�Air/Water�separation�(Venturi�adapter)
F48�air/water�separation�(Venturi�adapter)
So�that�no�water�enters�the�heating�and�air-conditioning�unit,�a�cover�(Venturi�adapter)�is�installed
before�the�air�intake�in�the�engine�compartment.
The�fresh�air�drawn�in�is�accelerated�by�the�design�of�the�Venturi�adapter�and�redirected�90°.
Through�this�process�the�water�separates�at�the�cover�and�then�drains�off�downwards.