Blueair Blue PURE FAN Guide D'utilisation page 14

FILTERS
Button control functions
1
Change filter
indicator
When the indicator
turns yellow (after 5
months of operation),
it's time to order a
new filter.
You can change the filter before the indicator light turns red, i.e. when
it first turns yellow. In this case, just reset the unit after changing the
filter and use for another 6 months. (see "Change the main filter")
14
2
Change filter
When the indicator
light turns red (after
1 extra month of
operation), you
should change the
main filter.
3
Reset filter alert
Press the button for
three seconds to
reset the filter alert.