Factors Inhibiting Detector Response; Important Safety Notes - UTC Fire and Security Det-Tronics X9800 Instructions Manual

FACTORS INHIbITING DETECTOR RESpONSE

windows
Glass and Plexiglas windows significantly attenuate
radiation and must not be located between the detector
and a potential flame source. If the window cannot be
eliminated or the detector location changed, contact
Detector Electronics for recommendations regarding
window materials that will not attenuate radiation.
Obstructions
Radiation must be able to reach the detector in order
for it to respond. Care must be taken to keep physical
obstructions out of the line of view of the detector.
Smoke
Smoke will absorb radiation. If accumulations of dense
smoke can be expected to precede the presence of a
flame, then detectors that are used in enclosed areas
should be mounted on the wall approximately 3 feet
(1 meter) from the ceiling where the accumulation of
smoke is reduced.
Detector viewing windows
It is important to keep the detector viewing windows as
free of contaminants as possible in order to maintain
maximum sensitivity. Commonly encountered substances
that can significantly attenuate IR radiation include, but
are certainly not limited to, the following:
Dust and dirt buildup
Paint overspray
Water and ice.
4.3

ImPORTaNT SafETy NOTES

Do not open the detector assembly in a hazardous
area when power is applied. The detector contains
limited serviceable components and should never
be opened. Doing so could disturb critical optical
alignment and calibration parameters, possibly
causing serious damage. This type of damage
could be undetected and could result in failure to
see a fire and/or false alarm.
The wiring procedures in this manual are intended
to ensure proper functioning of the device under
normal conditions. However, because of the
many variations in wiring codes and regulations,
total compliance to these ordinances cannot be
guaranteed. Be certain that all wiring complies
with the NEC as well as all local ordinances. If
in doubt, consult the authority having jurisdiction
before wiring the system. Installation must be
done by a properly trained person.
To prevent unwanted actuation or alarm,
extinguishing devices must be disabled prior to
performing system tests or maintenance.
The IR flame detectors are to be installed in places
where the risk of mechanical damages is low.
Remove the protective cap from the front of the
detector before activating the system.
Observe precautions for handling electrostatic
sensitive devices.
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