Nilfisk-ALTO BSG81 - Manual (Page 11)

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Remove the foam and the microsan filter.
*Depending on version
Dispose of the used microsan filter and fit a new one.
*Depending on version
Clean the foam and replace in the filter frame.
*Depending on version
*
*
*
If you have used the vacuum cleaner for fine dust particles
(such as plaster or cement), clean the motor protection filter by tapping it and,
if necessary, replace the motor protection filter and the microsan filter.
Replacing the motor protection filter
You should change the microsan filter with each new
replacement dust bag pack
(at least after every five dust bags).
Ⅲ Open the dust compartment cover.
Ⅲ Pull the filter holder out in the direction of the arrow
and open it.
Ⅲ Dispose of the motor protection filter and fit a new
motor protection filter.
Ⅲ Close the filter support, slide into the vacuum
cleaner and close the dust compartment cover.
Replacing the micro-hygiene filter*
You should change the microsan filter with each new
replacement filter pack
(at least after every five dust bags).
Press the exhaust grille latch in the direction of the
arrow to unlatch the exhaust grille and open it.
Press the filter frame latch in the direction of the arrow
to unlatch the filter frame and remove it
.