When To Change The Exhaust Filter; Exhaust Filter Change Indicator - Miele S 4000 Series Operating Instructions Manual

Maintenance and care
When to change the exhaust
filter
Depending on the model, your vacuum
cleaner will be fitted as standard with
one of the following exhaust filters:
a Air Clean filter (AC),
Replace this filter every time you start a
new packet of Miele dustbags. An Air
Clean exhaust filter and a dust
compartment filter with every packet of
Miele dustbag.
b Active Air Clean (black)
c Active HEPA (blue)
These types of filter need to be
changed approximately once a year.
Make a note of the date on the filter.

Exhaust filter change indicator

Certain models are fitted with an
exhaust filter change indicator (reset
control) to show when to change your
Active Air Clean b or Active HEPA c
filter.
The indicator lights up after
approximately 50 hours of operation
which is equivalent to about a year of
average use. You can continue
vacuuming when the light comes on.
However, the suction power will be
reduced as will the effectiveness of the
filter if it is not replaced in good time.
The filter change indicator light is
irrelevant if an Air Clean filter (a) is
being used, as long as it is replaced
every time a new packet of Miele
dustbags is started. The indicator light
will go out when the reset button is
pressed.
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