26
en | Maintenance and Service
Automatic Detectors LSN improved
2019.11 | 4.0 | F.01U.025.877
Operation Guide
Bosch Sicherheitssysteme GmbH
Make sure that the test beaker does not tilt, which could cause the detector to be lifted
up and consequently become detached from its fastening.
4.
Proceed as in the case of the first alternative:
–
spray with CO gas
–
leave the test device on the detector for approx. 20
sec, until the alarm is triggered
Notice!
In the case of programmed intermediate alarm storage, longer trigger times occur.
1.
Both scattered light areas are covered by the test beaker, so that both optical sensors are
triggered as the same time as the CO sensor (no O testing gas is required).
2.
The detector triggers the alarm and the red alarm LED flashes.
5.4
Inspection Procedure for FAP‑O
520
5.4.1
1. Alternative
1.
On the fire panel, switch the detector zone to be inspected to test mode. This
automatically sets the detector into revision operation and readies it for the detector test.
2.
Hold a sufficiently large object (e.g. the detector test device or the detector exchanger) in
both scattered light areas until an alarm is triggered. No O
testing gas is required.
5.4.2
2. Alternative
The detector can be tested in normal operation if a test device with magnet is used.
Notice!
Make sure that the alarm cannot be passed on to higher-level systems. Programmed
activations of the central unit are retained and are executed.
The figure shows the position of the reed switch (Pos.
R) in O
detectors.
If you imagine a line through the detector LED to be at the 12
o’clock position, the reed switch
(Pos.
R) is located at approximately 2
o’clock.
LED
R
Figure
5.2: Position of reed switch
1.
The LED of the detector flashes green once a second as soon as the reed switch has been
triggered.
The detector will now remain in test readiness for 60
sec with automatically set test
parameters (e.g. reduction of the delay time to 15
sec). The green LED flashes for as long
as the detector remains in test readiness.
