Blueair Blue Pure 311 Auto Manuel D'utilisation page 13

Change the main filter
When changing the filter, vacuum any dust that may have accumulated inside the unit.
Important!
Use only original Blueair filters suitable for the model to ensure proper
function and performance of the air purifier.
Step 1
When the indicator light
glows red, it's time to change
the main filter.
Step 3
Carefully push the top
cylinder down while rotating
counterclockwise to unlock.
Step 5
Open the pre-filter panel and
remove the pre-filter.
Step 7
Grip the filter handles and
pull upwards to remove the
main filter from the inner
structure.
Step 2
Turn the unit off and unplug
it.
Step 4
Remove the top cylinder
from the unit.
Step 6
Carefully remove the filter
shelf ring.
Step 8
Position the new main filter
onto the inner structure.
The filter handles should
face upwards.
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