Siemens FDA241 Technical Manual page 91

Building Technologies
Fire Safety
The airflow is being normalized.
For firmware version ≥3.10:
The central LED flashes. If another LED on the
bar graph flashes, this indicates the deviation of
the current measured value from the averaged
value
If normalization was successful, the aspirating smoke detector switches to normal
operation and the three green LEDs light up constantly.
Also observe the notices relating to normalization in the table of faults [➙ 102].
Normal operation
Normal operation, normalization is finished. The LEDs light up constantly.
Normalization over a period <1 h
Recommendation: Normalization should be carried out over a period ≥ 5 minutes
to avoid false measurements occurring later on when operating the aspirating
smoke detector.
To cancel normalization manually, press the
Commissioning
Normalization
The smoke value is being normalized.
The LED flashes and the yellow LEDs go out one
by one.
button again.
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2015-09-29