Miele DA 406 Operating And Installation Instructions page 9

The cooker hood works with
The air is drawn in and cleaned by the
grease filters and directed outside.
If the on-site ventilation system does
not have a
non-return flap supplied with the
appliance must be fitted in the exhaust
socket in the motor unit.
Having a non-return flap fitted in the
ducting ensures that air, once ducted to
the outside, cannot get back into the
room again.
The flap is closed when the cooker
hood is switched off.
When the cooker hood is switched on,
the non-return flap opens for the
cooking vapours to be ducted away.
(available as an optional extra with a
conversion kit and charcoal filter: see
"Technical Data")
The air is drawn in and cleaned first by
the grease filters and then by a
recirculated back into the kitchen
, the
through grilles in the top of the cooker
hood extension piece.
(...EXT models only)
The ...EXT models are designed to be
connected to an external motor located
outside the room.
The external motor is connected to the
cooker hood by means of a control
cable, and is operated by the controls
on the cooker hood.
. The cleaned air is then
Before using the cooker hood in
recirculation mode, ensure that the
charcoal filter is in place. See
"Cleaning and care".
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