Miele KFNS 37692 iDE-1 Operating And Installation Instructions page 20

Accessories
KKF-FF Active AirClean carbon filter
with holder
Carbon filters neutralize unpleasant
odors in the refrigerator section for
improved air quality.
The carbon filter holder clips onto the
protective strip at the back of the shelf
and can be moved as necessary.
Now activate the carbon filter
replacement indicator in Settings mode
(see "Selecting additional settings" -
"Carbon filter replacement
indicator ").
KKF-RF
Active AirClean replacement filters
Replacement filters to fit the Active
AirClean holder are available. We
recommend replacing the carbon filters
every 6 months.
20