Technical data

30 en | Maintenance and Service
Automatic Fire Detectors LSN improved
version
F.01U.003.449 | 7.2 | 2010.05 Product Information Bosch Sicherheitssysteme GmbH
8 Maintenance and Service
In Germany, maintenance work and inspection work on security systems are governed by the
regulations of DIN VDE 0833; these regulations stipulate reference to the manufacturer’s
instructions for maintenance intervals.
– Maintenance and inspection work should be carried out regularly and by trained
personnel.
– BOSCH ST recommends carrying out a functional and visual inspection at least once a
year.
– FAP-OTC 420 / FAP-DOTC420
An FAP-OTC 420 will deactivate its C sensor after 5 years of operation due to the gas
sensor's limited life cycle.
On the panel, the detector in question is displayed with "EMERGENCY OPERATION" and
it continues to function as an OT or O detector.
With the FAP-DOTC420, the gas sensor has a life cycle of 6 years. Once the gas sensor
has been switched off, this detector continues to function as a DOT or DO detector and
is displayed on the panel with "EMERGENCY OPERATION".
This is why multisensor detectors with C sensors need to be exchanged every 5-6
years.
– Optical fire detectors should, depending on the environmental conditions, be cleaned
and exchanged every 4-6 years.
In especially dusty environments, cleaning and exchange may be necessary earlier.
Testing Detector Type
FAP-DO420
FAP-O 420
FAP-O 420 KKW
FAH-T 420
FAH-T 420 KKW
FAP-DOT420
FAP-OT 420
FAP-DOTC420
FAP-OTC 420
Check of the LED display X X X X
Visual check of the mounting X X X X
Visual check for damage X X X X
Check the monitoring range has not
been restricted, for instance by
shelves or similar installations.
XXXX
Triggering with hot air - X X X
Triggering with Solo A3-001 Test
Aerosol
X-XX
Triggering with Solo CO Testing gas - - - X
Every detector base has a Chamber Maid Plug
(cleaning opening with a plug) for blowing out
the optical chamber with compressed air (not
required for the FAH-T 420 Heat Detector).