The air is filtered and recirculated through the front grille.
Move the handle F to position F — Fig. 3.
You will need an original AEG KLF60/80 activated carbon filter for
the recirculating mode. (See special accessories).
Summer/winter operation changeover
To avoid unnecessary outdoor transport of thermal energy
during exhaust air operation in winter, we reccommend you to
convert the fume extractor hood to winter operation (return air).
The covering foil over the return air slots is to be removed.
You also need an active carbon filter (special accessory).
When outdoor temperatures become warmer (spring), the
active carbon filter is removed again and the fume extractor
hood reset to exhaust air operation as per installation se-
quence. The return air slots on the upper side of the appliance
are to be sealed e.g. with self-adhesive aluminium foil. See
also for exhaust air operation installation.