Functional Test Of Airflow Sensors; Preparations For The Functional Test - Bosch FAS-420-TM Operation Manual

FAS-420-TM Aspirating Smoke Detector
If no faults are detected, the functionality of the FAS-420-TM and/or the airflow sensor is
checked using the test pipe or diagnostic software (see Section 6.7 Functional Test of Airflow
Sensors).
If the airflow malfunctions are not displayed on the fire panel, proceed as follows:
Check whether...
–
–
If no faults are detected, the functionality of the FAS-420-TM and/or the airflow sensor is
checked using the test pipe or diagnostic software (see Section 6.7 Functional Test of Airflow
Sensors, page 81).
6.7

Functional Test of Airflow Sensors

Check the functionality using a test pipe and a digital precision pressure gauge and with the
aid of a PC and the FAS-ASD-DIAG Diagnostic Software.
A full functional test using the digital precision pressure gauge is described below. A limited
functional test can also be carried out without a digital precision pressure gauge.
6.7.1

Preparations for the Functional Test

1.
Activation threshold for airflow malfunction
2.
NOTICE!
Once the pipe system has been disconnected from the FAS-420-TM, the device reports a
malfunction when the set airflow malfunction delay has lapsed. If no airflow malfunction is
detected, the device is faulty.
Bosch Sicherheitssysteme GmbH
the FAS-420-TM was programmed in the central fire panel program and the program was
transferred
the transmission path between the FAS-420-TM and the fire panel is working correctly.
Select the following settings using the programming software (see
Section 4.4.3 Parameter Settings via Programming Software, page 63):
30%
Airflow Fault Delay
30 sec
Disconnect the pipe system from the FAS-420-TM.
Operation Guide
Sensitivity
0.5%/m
Alarm delay
10 sec
Fan voltage
9 V
Commissioning | en 81
LOGIC×SENS filter
on
F.01U.088.878 | 4.1 | 2010.11