Miele DA 390-5 - Manual (Page 7)

The ventilation hood offers two modes of operation:
Air extraction
The air is drawn in and cleaned by the
grease filters and directed outside.
The hood comes equipped with a
non-return flap. This flap automatically
closes when the hood is turned off so
that no exchange of outside air and
room air can occur. When the hood is
turned on, the air pressure of the
exhaust fan automatically opens the
flap blowing the inside air and cooking
odors outside.
Recirculation mode
Air is drawn through the grease filters
and active charcoal filters. The filtered
air is then recirculated back into the
kitchen.
The active charcoal filter and the
installation kit may be purchased from
Miele.
Before using the hood in
recirculation mode, ensure that the
active charcoal filters are in place,
see "Cleaning and Care".
Functional description
7