Miele S 280i Operating Instructions Manual page 17

Dustbag change indicator
This indicates when the dustbag
needs changing.
@ Set the suction power selector to
maximum.
Switch on the vacuum cleaner and
lift up the floor nozzle so that it is
not resting on the floor. If the red
mark on the dustbag change indi-
cator covers the window comple-
tely, change the dustbag, even if it
does not seem completely full.
Please note:
The dustbag change indicator reacts
to the air porosity of the dustbag. On
the one hand, a small amount of
cement, plaster or fine dust is enough
to indicate a full bag, although the
latter is almost empty. On the other
hand, the bag can be full of carpet
fluff and threads, although the indi-
cator scarcely reacts. Such extremes
seldom occur, as household dust is
usually a mixture of carpet fluff, hair
and sand. The MIELE dustbag
change indicator is designed to react
to such mixtures of dust.
Operation
We recommend the following:
1. When vacuuming a lot of sand and
dust:
Change the dustbag, if
indicator shows "full".
2. When picking up a lot of fluff and
hair, the indicator will show the
dustbag as only "half full", when it
is actually bulging.
Important: Nozzles, such as the
crevice nozzle, affect the function of
the dustbag change indicator. There-
fore, only attach the floor nozzle
when checking whether the bag is
Il.
the