I56-4446-000
DB200-04-00
4
Figure 8: Coarse Alignment Procedure
REFLECTOR
SCREW
LOCATIONS
Note that the alignment gun site does not give an accurate alignment. It
is sufficient only as a starting point for the next step. On completion of the
fine adjustment procedure, the alignment gun site may not appear to be
centred on the reflector.
SCREW
LOCATIONS
Figure 9: Housing Screw Locations
EYE
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 its 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”.
5. Ensure that both of the optics lock-down screws are re-tightened.
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.
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. Once depressed
the yellow LED will begin to blink. On completion, the yellow LED will
stop blinking and the green LED will begin blinking, 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 insure the detector has been setup 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, for example
this manual. 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.
In addition to the four standard sensitivity selections the detector has two
Acclimate settings. When either of these settings is chosen the detector
will automatically adjust its sensitivity using advanced software algorithms
to select the optimum sensitivity for the environment. The sensitivity will be
continuously adjusted within the ranges specified in graph 1.
RESET SWITCH
Sensitivity Setting % Obscuration
Display Reading
Level 1
25
25
Level 2
30
30
Level 3
40
40
Level 4
50
50
Acclimate Level 1
30 to 50
A1
Acclimate Level 2
40 to 50
A2
Table 1: Sensitivity Settings
NOTE: Only Levels 1 - 3 are approved to EN54-12: 2015
