Bosch FAS-420-TM - Maintenance; Visual check; Detector Module and Alarm Transfer; Pipe System

86 en | Maintenance FAS-420-TM Aspirating Smoke Detector
F.01U.088.878 | 4.1 | 2010.11 Operation Guide Bosch Sicherheitssysteme GmbH
7 Maintenance
7.1 Visual check
Check whether…
– The pipe system is securely installed and undamaged (where freely accessible)
– The air sampling openings of the pipe system are free
– The aspiration pipe and connection cable are securely connected
– The FAS-420-TM is undamaged.
7.2 Detector Module and Alarm Transfer
Proceed in accordance with Section 6.4 Checking the Detector Module and Alarm Transfer,
page 79. Also check the detector module visually for exterior contamination or damage and
replace it if necessary.
7.3 Pipe System
Check the pipe system and the air sampling openings for obstruction in areas susceptible to
dust particles or icing. If necessary, blow out the pipe system and air sampling openings with
blast air. Use a mobile cylinder of compressed air (blowing-out system) or activate the manual
blowing-out system located on site. The components (compressors, compressed air
containers, dryers) required to supply the compressed air can be obtained directly from the
relevant compressed air system suppliers.
NOTICE!
A hardware defect in the detector module is displayed in the "Fault messages" screen of the
diagnostic software.
CAUTION!
Before blowing out the pipe system, disconnect the FAS-420-TM from the pipe system;
otherwise, the airflow sensor will be damaged.