12
NEFFES 1200ST
Air Purifier User Manual
Sound isolation:
The sound isolation cassettes must be cleaned within the scope of
periodic maintenance. The silencer sets shown with numbers 8 and 9 in Figure-1 can be
removed by pulling back. The front silencer numbered 3 can be removed by loosening the
three M6 bolts under the cassette with a ten mm wrench. During cleaning, avoid contacting
the sound isolation sponge with any liquid (water, detergent solution, etc.), clean it with
gentle air flow. Do not use compressed air. Compressed air may deform the sound isolation
surface by breaking of parti-
cles from the surface.
Fan Maintenance and
Disassembly:
In case of any
fault or need of maintenance
on the unit fan, you need to
remove the fan group from
its slides and demount the
fan silencer numbered 3
shown in Figure-1.
The procedures described in this section must be performed by competent personnel wear-
ing/using the Personal Protective Equipment specified in this manual.
l
Pull the tab that secures the fan group
on the casing with the slide mechanism.
l
Loosen the three M6x25 bolts under the
tray carrying the fan by using a ten mm
wrench (See Cleaning and Maintenance
section, Sound isolation).
l
Pull the fan group out.
l
Remove the fan silencer.
