H.Koenig UP810 Manuel D'utilisation page 9

HOW TO MAINTAIN THE FILTER:
1. Press the battery locker
to unattached the battery
from dust cup
3. Take out the filter case,
then take out the filter
5. Please dry the HEPA filter
and filter case completely
before assemble back
7. put the filter case back to
the dust cup
2. Open the dust cup as
below showed
4. wash the filter case and
HEPA filter
6. After drying, assemble
the filter to the case
8. assemble the dust cover
into the dust cup as below
showed