Alecto SA-20 Manual página 12

IMPORTANT:
For optimal operation, we recommend mounting the smoke detector on the ceiling. See also
the installation instructions. If ceiling mounting is not possible, we recommend that you place
the smoke detector in the middle of a wall. The installation location must be in the natural
airflow of the room and free of side walls or slope.
USING, TESTING AND MAINTENANCE:
Using:
The smoke detector works if the 9V battery has been placed and the SA20 has been mounted
to the ceiling. The unit can only be mounted to the plate if the battery has been installed. The
LED underneath the test button will now flash ± every 30 seconds. Once smoke is detected,
the alarm will sound. Once the smoke disappears, the smoke alarm will stop automatically
Hush function
The Hush function allows the user to decrease the smoke detectors sensitivity during an
alarm. By pressing the "HUSH/TEST" button 2 - 3 sec the smoke detector is decreased for a
period of 9 minutes. The red led flashes 1x every 9 seconds in Hush mode. After 9 minutes the
smoke detector resets to its default sensitivity. For example, this can be used when the smoke
detector gives alarm during cooking.
Time-out function:
The time-out function allows you to preventively lower the sensitivity of the smoke detector.
By pressing the "HUSH/TEST" button 2 - 3 sec without an active alarm, you reduce the smoke
detectors sensitivity for 9 minutes. The red LED lights up 1x every 9 seconds during Hush
mode. After 9 minutes the smoke detector resets to its default sensitivity. You can use this
mode for example when you know that a situation (for example: cooking) will product smoke
and there is no danger.
Test:
Hold the test key for at least 3 seconds. The operation is still correct if you hear 2 or 3 signal
tones. Check the smoke detectors weekly. In alarm status the smoke detector will generate
about 85dB(A). Do not use candles, open fire or cigarettes to test the smoke detector.
ATTENTION:
If the cause of an alarm is unclear, assume it's caused by fire. Im-
•
mediately evacuate the building.
• Keep the smoke detectors out of range of children.
• Protect against dust during rennovations. Without protection the
smoke detectors will lose their functionality.
Maintenance:
The smoke detector is maintenance-free. In very dusty rooms they may be cleaned by
vacuum.