Bosch 520 Series - Maintenance and Service

Automatic Detectors LSN improved Maintenance and Service | en 23
Bosch Sicherheitssysteme GmbH Operation Guide 2019.11 | 4.0 | F.01U.025.877
5 Maintenance and Service
For maintenance and inspection work on security systems, the regulations laid down in
DINVDE0833 strictly apply in Germany; these refer to the maintenance intervals specified by
the manufacturer.
Notice!
The 520 Series Detectors do not require to be removed from their bases for routine
maintenance.
If occasionally a detector requires replacement due to a design change or damage to the
device then this should be carried out by a qualified engineer.
This should only be undertaken when the system is offline and the user has made alternative
arrangements for emergency evacuation.
– Maintenance and inspection work should be carried out regularly and by trained technical
personnel.
– Bosch recommends a functional and visual inspection at least once a year.
Test steps Detector type
O OC
Check of the LED display X X
Visual check of the mounting X X
Visual inspection for damage and contamination of the detector
surface
X X
Check monitoring area for limitations of function and interference
caused by lamps
X X
Test of the optical sensors (see Inspection Procedure for FAP‑O  520,
page 26)
X -
Combined test with detector test device and CO testing gas (see
Inspection Procedure for FAP‑OC  520, page 25)
- X
FAP-OC520
Notice!
Due to the life expectancy of the gas sensor, the FAP‑OC520 detector switches off the
Csensors after approx. 5 years of operation. The detector will continue to function as an
Odetector. An according fault indication is displayed on the fire panel.
Exchange the detector immediately in order to keep up the higher detection reliability of the
OC detector.
Notice!
The cleaning intervals depend on the environmental conditions.
The detector can be wiped over with a soft cloth and a proprietary plastic cleaning agent.
Cleaning should only take place in test mode.