NEC S 5000 - Manual (Page 42)

Active Air Clean filter (black)
A special active charcoal filter which
absorbs odors from the dust collected
in the dustbag, helping to prevent
odors. The "ACTIVE air clean filter" can
be used in place of the existing exhaust
filter. There is no difference in the fine
dust performance of the "Active Air
Clean" and the "Super Air Clean" filter.
Active HEPA filter (blue)
The "Active HEPA" filter combines
activated charcoal and HEPA filtration
in one. The active charcoal layer
absorbs odors from the dust collected
in the dustbag. Vacuum cleaners
equipped with this exhaust filter are
particularly suitable for allergy sufferers
and those concerned with a high level
of hygiene because of its ability to trap
respirable particles and allergens.
Filter frame
The filter frame is needed if you would
like to exchange a SuperAirClean filter
with an Active air Clean or HEPA filter,
see "Maintenance and care -
Exchanging exhaust filters".
Optional accessories
42