Air Sampling Openings - Bosch FCS-320-TM Operation Manual

22 en | Technical Specifications
2.6.2

Air sampling openings

Aspiration reducing film sheets
An air sampling opening is a 10 mm bore in the aspiration pipe that is covered with a patented
aspiration reducing film sheet with the required opening diameter. The size of the opening
depends on the structure of the pipe system (see Section 3 Planning, page 31).
The aspiration reducing film sheet is secured with marking tape to prevent it from becoming
displaced. The marking tape is a transparent sticky film with red edges and a 10 mm hole. It is
placed over the aspiration reducing film sheet so that the air sampling opening is not
concealed and can be seen from long distances.
Figure 2.17 Air sampling opening with aspiration reducing film sheet
and marking tape
Aspiration reducing clips
In areas susceptible to obstructions or icing, special, patented ASD aspiration clips with
flexible aspiration reductions are used (see Figure 2.18).
Figure 2.18 Aspiration reduction for soiled areas and deep-freeze
areas
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.
F.01U.130.928 | 1.0 | 2009.11
3
1
4
4 2
1
2
Operation Guide
FCS-320-TM Aspirating Smoke Detector
2
5 6 4 3
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
1 Aspiration reduction for deep-
freeze facilities
2 ASD aspiration clip made of
plastic
Bosch Sicherheitssysteme GmbH