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Product Information Optical Smoke Detector NOM/NOM K 100 LSN
6.5. Detector Fault
6.5.1. Detector exchange required/detectors highly contaminated
Fault
Exchange
Slight
contamination
Quiescent state value
Fault
If there is contamination, the flow through the
1
photo cell increases
A message may be transmitted if the
2
30% threshold is reached in 16 consecutive contamination
measurements. The detector alarm threshold will simultaneously
be increased by the degree of contamination to reproduce the
original sensitivity to smoke.
There may be an automatic order to exchange the detector if the
3
60% threshold is reached.
(approx. 30% has been compensated)
At 80% of the alarm threshold the detector is extremely
4
contaminated; compensation is no longer possible.
The risk of alarms has increased considerably.
The detector deactivates its measuring system.
The LED flashes yellow.
Current
100%
80%
60%
30%
1
0%
Seite 17 von 30
PI − 34.62c
3
2
BDL−F .01U.002.709
A5.en / 29.12.2004
ST−FIR/ PRM1 / deh
4
Time
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