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DEKON D-BM100 OPTICAL BEAM
SMOKE DETECTOR
adjustment of the optical path between the detector and the reflector. The prism reflector's position cannot
be adjusted and it is recommended to fix it to a flat surface with screws or glue.
The detector is properly aligned with the reflector/set of reflectors when the reflected laser light illuminates
back the detector. In such case the external battery should be disconnected, the detector cover should be
mounted and the START button should be pressed. As a result, the diode shall light in a pulse manner with
yellow or green colour. After ca. 40 sec. the green diode should start blinking once every 10s, what confirms
the proper adjustment of the infrared beam to the distance between the detector and the reflector/set of
reflectors. During this adjustment process, the detector signals a fault mode on the control panel. After the
adjustment is done, the detector enters into the supervision mode.
Note:
The detectors should not be exposed to direct sunlight operation.
The detector/reflector alignment with a help of a laser beam should be carried out in a dark room wherever
possible.
Fig. 2 D-BM100 detector during optical path alignment
6
OPERATING CONDITIONS AND MAINTENANCE
The D-BM100 smoke detector long-lasting operation, especially in dusty premises, may result in
contamination (dust, dirt accumulation) of the optical part of the detector and of the reflector/set of
reflectors. After exceeding a determined contamination compensation range, the detector transmits a fault
signal to the control indicating the necessity to call a maintenance technician. The detector is still able to
detect fire factors (smoke) and enter into the alarm mode. The fault caused by contamination entails the
need of cleaning the reflector/set of reflectors and the front of the detector. After cleaning the above
mentioned elements, the START button should be pressed in order to adjust the detector to new conditions.
After the adjustment is completed, the detector automatically alters its mode from a fault into a supervision
one.
It is possible to check proper operation of the D-BM100 detectors installed in fire detection systems during
their maintenance inspection by concealing partly the detector's optical path. It can be carried out using a
special plastic foil with overprints appropriate to the detector two sensitivity levels – 18%; 30%
(Fig. 10). The foil should be placed at the front of detector and it should trigger an alarm mode. During
renovation or painting works carried out in the premises where detectors are installed, the detector and
reflector/set of reflectors should be removed or protected with cover. Detectors damaged as a result of
painting or renovation works are not subject to warranty repairs.
Doc:UM-D-BM100-0717-EN
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