Miele S 5980 - Manual (Page 25)

When to change the exhaust
filter
Always change the Active HEPA filter
when the exhaust filter indicator lights
up. It is designed to light up after
approx. 50 hours of operation which is
the equivalent to about a year of
average use. It should be replaced
sooner if it is obviously soiled or no
longer effective. The vacuum cleaner
can still be used with the exhaust filter
indicator lit up. However, the suction
power will be reduced as will the
effectiveness of the filter if it is not
replaced in good time.
You can replace the Active HEPA filter
supplied with the vacuum cleaner with
one of the other Miele exhaust filters if
you wish (see "Replacing one type of
exhaust filter with another").
Maintenance and care
25