Testing The Detector Module And Alarm Transmission; Checking Malfunction Transmission; Checking Airflow Monitoring - Bosch FAS-420-TT Series Operation Manual

Aspiration smoke detector LSN improved
7.3

Testing the detector module and alarm transmission

Notice!
In order to accelerate the alarm evaluation during gas testing, LOGIC · SENS must be set to
"off" (see Parameter Settings via RPS (Remote Programming Software)). On completion of
the test, reset LOGIC·SENS to "on".
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–
Check...
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7.4

Checking Malfunction Transmission

Notice!
The steps below may only be carried out following an airflow calibration in accordance with
Calibrating the airflow sensor, page 97 .
Malfunction transmission occurs as part of checking the airflow monitoring system (as per
section below).
Check whether, when a pipe breakage and an obstruction are detected, the malfunction is
displayed at the aspirating smoke detector and at the fire panel.
7.5

Checking airflow monitoring

Pipe breakage
Check the breakage detection:
1.
–
2.
3.
4.
Obstruction
Check the obstruction detection:
1.
–
2.
3.
Bosch Sicherheitssysteme GmbH
Detach the detector module using test aerosol. Spray the test aerosol either into the first
air sampling opening or into the test adapter on the pipe system.
Use the table below to check the transmission line to the fire panel.
Whether the alarm is displayed on the
aspirating smoke detector
Whether the alarm is transmitted to the
fire panel and reported on the
appropriate line
Detach the pipe from the connection to the FAS-420 or open the test adapter.
Check whether the malfunction display on the aspirating smoke detector lights up.
Alternatively, check the data of the airflow sensor using the diagnostic appliance and a
PC or laptop.
Check whether the malfunction is displayed on the fire panel.
Enter the result in the test log.
Close – depending on the planned airflow monitoring – the corresponding number of air
sampling openings with some duct tape.
Check whether the malfunction display on the aspirating smoke detector lights up.
Alternatively, check the data of the airflow sensor using the diagnostic appliance and a
PC or laptop.
Check whether the malfunction is displayed on the fire panel.
If this is not the case, ...
– Check whether the display board is
connected
– There is a fault with the aspirating
smoke detector Replace the detector
module
– Check the transmission lines
Operation guide
Commissioning | en 99
2020.04 | 6.1 | F.01U.029.275