From experience, false alarms are quite rare. Mostly the smoke chamber is dirty. A maintenance interval of 6 months must be observed for the smoke alarm (2x per year).
TEST/MAINTENANCE
The LED test button (Fig 8.1) is used to completely test the detector: Function test of the battery, electronic smoke chamber test and a test of the evaluation electronics. A test should be performed at least 1x per year and after each battery replacement.
Press the test button (up to 20 sec.) until a loud and pulsating alarm tone sounds (approx. 85 dB). The test alarm resets automatically a few seconds after the test button is released.
If necessary, the device should be wiped dry about twice a year and vacuumed from the outside.
The detector performs an automatic self-test. During this test, the evaluation electronics as well as the voltage and the internal resistance of the battery are checked approx. every 45 sec. This test is signaled by a short flash of the red LED (Fig. 8.1). If the operating voltage of the 9 V battery falls below a certain value, the detector signals a necessary battery change by a beep (approx. every 45 sec.), approx. 30 days in advance (see 3. Installation/Assembly/Connection). Battery life is highly dependent on local conditions such as temperature, temperature fluctuations, humidity and number of test alarms/alarms, among other factors. Alkaline: approx. 2 - 3 years; lithium up to approx. 10 years. The use of rechargeable batteries is not permitted.
Perform a function test after each battery replacement. In the event of a malfunction, the red LED flashes up to approx. every 45 sec. alternating with the beep. In this case, the detector must be replaced. When an alarm is triggered, the detector resets automatically when there are no more particles in the smoke chamber. The detector can be switched off manually by removing the battery.