2007/6/22 - A
6.
Using the bracket as a template, drill two holes in the exact location, the device is
to be mounted and insert the dowels.
7.
Screw the bracket on with the two hooks facing down by using the screws and
screwing them into the dowels.
8.
Locate the single line mark on the detector and line it up with one of the hook of
the bracket. After both hooks fits in the two mounting holes on the detector,
rotate the detector counter-clockwise to lock it in onto the bracket. The
installation is now completed.
Testing the Smoke Detector
By pressing the Test button on the Smoke Detector, you can test if the Smoke Detector is functioning normally.
If the Smoke Detector functions normally, the LED will be on for 2 Sec. then it will sound a 2-tone beep.
If the buzzer sounds 3 times of 2-tone beep, which means the “Optical Chamber” on the Smoke
Detector is either dirty or out-of-order.
If the LED doesn’t light and no beep is sounded, it means the Smoke Detector is out-of-order.
Supervisory Signal
After installation, the Smoke Detector will automatically transmit Supervisory Signals periodically to the
Control Panel at intervals of 60 min. to 100 min. randomly.
If the Control Panel has not received the signal from the Smoke Detector for a preset period of time, the
Control Panel will indicate it on its display to show that particular Smoke Detector is experiencing an
out-of-signal problem.
Detecting the Smoke
Once the concentration of the smoke exceeds the set threshold value, the Smoke Detector lights up its
LED to indicate it’s sending the Smoke Alarm signal to the Control Panel. After the transmission is
completed, SDA-9 then activates its buzzer with LED flashing rapidly for 10 seconds for local warning.
After this 10-second local warning period, SDA-9 proceeds to perform a follow-up smoke check. If the
smoke concentration is found to be alarming still, SDA-9 will repeat another 10 seconds of local warning
with buzzer and rapid flashing LED.
SDA-9 will repeatedly perform follow-up checks until the smoke concentration is lower than the set
value, then the alarm will be stopped automatically or the alarm can be stopped manually by using the
“Alarm Silence” function.
Once a Smoke Alarm Signal has been transmitted, SDA-9 will continue to send alarm signals at every 2
minutes when the smoke concentration continues to be higher than allowed. This 2-minute cycle will
be repeated until the smoke concentration is lower than the set value, then the alarm will be stopped
automatically or the alarm can be stopped manually by using the “Alarm Silence” function.
