Dräger Flame 3000 - Page 7

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Dräger Flame 3000
2.2.3 Optical test
There are four LEDs located behind the enclosure window. They emit
infrared light that is reected by both the internal and external surfaces
of the enclosure window. The reections are continually monitored by
the detector and if they are disturbed the detector signals an optical
fault.
The optics of the Dräger Flame 3000 can also be checked using the
Dräger FS-5000 Flame Simulator.
2.2.4 Explosive atmosphere protection
The Dräger Flame 3000 is certied for use in some potentially explosive
atmospheres. The explosion protection approval is valid for use of the
device in gas/vapour-air mixtures of combustible gases and vapours
under atmospheric conditions. The explosion protection is not valid for
use in oxygen-enriched atmospheres.
WARNING
Do not open the enclosure in the presence of an explosive
atmosphere as it could lead to an explosion.
Ensure that the ame path of the Dräger Flame 3000 is not
damaged during installation. A damaged ame path could
lead to an explosion.
CAUTION
Only appropriately trained service personnel may open the
enclosure. Incorrect disassembly of the Dräger Flame 3000
may damage the equipment.
!
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2.2.5 Status LED
The status of the ame detector is indicated by the color of a status
LED located below the lens.
LED Status
Off No power/major internal fault
Green Healthy
Yellow Fault
Red Alarm
3897
Description