Honeywell Notifier NFXI-BEAM-T Installations- Und Wartungsanleitung Seite 4

Figure 8: Coarse Alignment Procedure
SCREW
LOCATIONS
Figure 9: Housing Screw Locations
Step 2. Fine Adjustment
See figures 6 to 8.
1. Ensure that no objects are in the line of sight between the detector
and the reflector.
2. Depress the Alignment switch once. Both the digital display and the
yellow LED should turn on indicating that alignment mode has been
entered. The display should begin reading "- -" signifying an
electronic gain adjustment. After a few moments the display will
indicate a numeric value near 20.
Note: If the display reads "Lo" then the detector is not receiving
enough light from the reflector. Go back and repeat the course
alignment step and verify that the proper number of reflectors is
used for the installed distance. The display will continue to read "Lo"
until the detector receives enough light from the reflector to continue
with the fine adjustment step.
Note: In alignment mode (indicated by the yellow LED and the
numeric display) the sensitivity select and test switches are
disabled.
3. Once the display shows a number, begin adjusting the horizontal and
vertical alignment knobs one at a time to increase signal level on the
display. Continue adjusting each axis one at a time going back and
forth between them until a peak value is indicated. If a value of 90 is
achieved, the detector will reduce it's electronic gain. This will be
indicated by a "- -" reading on the display. When this happens halt
any further adjustment until the display again reads a numeric value.
This process may occur more than once during the fine adjustment
step.
4. Once satisfied that it is not possible to achieve a higher reading on
the display depress the alignment switch to complete the fine
adjustment step. The digital display readout will turn "OFF" and the
yellow LED will remain "ON".
Note: It may not be possible to achieve a figure close to 90 on the
display during the last adjustment iteration. Each time the figure 90 is
reached the gain is reduced, making it more difficult to achieve high
values. Any number is acceptable, provided it is the highest figure
that can be achieved after the final gain adjustment.
5. Ensure that both of the optics lock-down screws are re-tightened.
NB200-00-02
EYE
REFLECTOR
SCREW
LOCATIONS
RESET SWITCH
At this time it is sensible to set the sensitivity of the detector using the
sensitivity switch and digital display. See SENSITIVITY SELECTION for
further details.
Step 3. Final Gain Adjustment
See figure 9.
In this step, the detector electronically adjusts its internal gain one final
time. It is necessary to complete this step with the outer housing installed
since the housing will change the amount of light received from the
reflector.
1. Install the outer housing of the detector. The housing is installed by
tightening the four captive screws, one in each corner of the
housing.
Note: The housing contains a gasket seal that protects the detector
circuitry from corrosion and moisture. To ensure that this gasket
performs correctly, it is necessary to tighten all four of the screws
holding the outer housing in place evenly.
2. Remove the protective film from the front surface of the outer
housing. Note that the outer housing may require cleaning if any
residue remains. Use only a soft, damp cloth: Do not use any
solvents.
3. To initiate the final electronic gain adjustment, the reset switch must
be depressed using a small screwdriver or similar tool.
depressed the yellow LED will begin to blink. On completion, the
yellow LED will stop blinking and the green LED will begin blinking
(dependant on panel operation), indicating that the gain adjustment
was successful.
Note: Use caution not to block the line of sight between the detector
and reflector in this step.
4. Install the outer aesthetic ring by snapping it onto the outer housing.
Note: If the outer aesthetic ring has been painted ensure that the
paint is completely dry before proceeding with this step.
Step 4. Final Verification
This step is required to ensure the detector has been set up correctly
and will detect smoke at the proper sensitivity level.
1. With the detector functioning (dependant on the operation of the
control panel, this may be indicated by the green LED blinking),
completely block the reflector with a non-reflective opaque material.
After about 30 seconds, the detector should enter either the fault or
alarm condition. If the detector does not enter the fault or alarm
condition, there is a problem with the installation.
2. Complete a sensitivity test of the detector as described in
SENSITIVITY TESTING below.
SENSITIVITY SELECTION
The sensitivity of the detector can be set only when the housing is
removed and the detector is not in the fine adjustment step of the alignment
mode. To enter the selection mode, press the sensitivity button once (see
figure 6). The digital display will illuminate and read the current sensitivity
setting in percent obscuration. Press the sensitivity button again to rotate
to the next setting. Once the required setting is achieved (See table 1), the
detector will exit the sensitivity selection mode if no further switch presses
occur.
Sensitivity Setting
Level 1
Level 2
Level 3
Level 4
Level 5 (Acclimate)
Level 6 (Acclimate)
Table 1: Sensitivity Settings
4
% Obscuration Display Reading
25
30
40
50
30 to 50
40 to 50
Once
25
30
40
50
A1
A2
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