Hkoenig SWRC120 Manuel D'utilisation page 16

G. The dust container can be scrubbed clean with a
dishcloth. Please pay attention: Do not wash the dust
container with water
H. Dry the dust box and filter assembly, and keep it
dry to ensure its service life.
Note: It is recommended to wash the primary filter
with water after use of about 15 - 30 days. The
maximum service life of the high efficiency filter is 3
months.