Bosch BSG81396UC Notice D'utilisation Et D'entretien page 16

Maintenance
Before the appliance is cleaned, ensure that it has been switched off and unplugged.
Vacuum cleaners and accessories made of plastic can be cleaned using a general
commercial plastic cleaner.
Do not use scouring agents, glass or all-purpose cleaners.
Never immerse the vacuum cleaner in water!
If necessary, the dust compartment can be cleaned using another vacuum cleaner,
or simply cleaned with a dry dust cloth / dust brush.
Subject to change without notice.
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Slide the filter frame under the two retaining ribs and
turn in the direction of the arrow until it engages.
Close the exhaust grille.