Fas-420 Functional Test; Preparations For The Functional Test - Bosch FAS-420-TT Series Operation Manual

100 en | Commissioning
4.
Notice!
A pipe breakage or pipe obstruction is indicated by a flash code via an LED on the detector
module:
Breakage: 3 x flashes
Obstruction: 2 x flashes
The corresponding flash code is repeated every two seconds.
Troubleshooting
If the airflow malfunctions are not correctly detected by the unit, proceed as follows:
Check whether...
4
1.
2.
3.
4.
If no faults are detected, the functionality of the FAS-420 and/or the airflow sensor is checked
using the test pipe or diagnostic software.
7.6 FAS‑420 Functional test
Check functionality using the test pipe, a digital pressure gauge and the diagnostic software.
The aspirating smoke detector must be operating for at least 30 min.
7.6.1

Preparations for the functional test

Select the following parameter settings using the FSP‑5000‑RPS programming software (the
settings in the bold font indicate deviations from the default setting):
Activation threshold for airflow malfunction
Low (+/- 10% volume flow change)
Average (+/- 20% volume flow change)
High (+/- 30% volume flow change)
Very high (+/- 50% volume flow change)
Airflow fault delay
30 seconds
2 minutes
15 minutes
60 minutes
Connecting the digital pressure gauge:
–
–
–
2020.04 | 6.1 | F.01U.029.275
Enter the result in the test log.
All inlet holes are free
The pipe system has breaks or fractures
All pipe connections are tight
The fan can blow out freely
The correct aspiration reducing film sheets were used
Connect the test pipe
Connect the pressure measuring hose to the adapter connection B.
Connect the 4-pin plug of the adapter to the digital pressure gauge and switch it on.
Operation guide
Aspiration smoke detector LSN improved
Alarm delay
0 seconds
10 seconds
30 seconds
60 seconds
LOGIC·SENS filter
Off
On
Bosch Sicherheitssysteme GmbH