24
en | Technical Specifications
FAS-420-TM Aspirating Smoke Detector
F.01U.088.878 | 4.1 | 2010.11
Operation Guide
Bosch Sicherheitssysteme GmbH
Aspiration reducing clips
In areas susceptible to obstructions or icing, special, patented ASD aspiration clips with
flexible aspiration reductions are used (see
Figure 2.19
).
During use in deep-freeze areas, the flexible aspiration reduction expands in the air sampling
openings and pushes the ice away during blowing out. The special plastic clip ensures that the
aspiration reduction remains at the defined location.
As the clips are more stable under pressure and the elastic rubber insert significantly
improves the cleaning effect, they are used for all plans and designs which require a blow-off
system due to environmental influences (e.g. increased exposure to dust).
The aspiration reductions with plastic clips are available separately.
Figure 2.18
Air sampling opening with aspiration reducing film sheet
and marking tape
1
Smoke aspiration pipe
2
Air sampling opening with
aspiration reducing film
sheet
3
Marking tape for aspiration
reducing film sheet
4
Air sampling opening
5
Fire red (RAL 3000)
6
Transparent
Figure 2.19
Aspiration reduction for soiled areas and deep-freeze
areas
1
Aspiration reduction for deep-
freeze facilities
2
ASD aspiration clip made of
plastic
1
3
3
6
2
4
4
4
5
2
1
2
NOTICE!
The standard AF-x aspiration reducing film sheets and the marking tapes are not suitable for
use in low-temperature areas.
Summary of Contents for FAS-420-TM
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