EI 3016 - Page 42

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The entire Alarm must be replaced (Also check the replace by date on the label on the side of the
Alarm). Disconnect the mains first and replace the Alarm - see ‚Removing the Alarm‘ section.
Maximum Dust Compensation (Ei3016 and Ei3024 only)
The Alarm monitors the dust contamination build-up in the optical smoke chamber and then
compensates for it, reducing the possibility of false alarms.
If however, the Alarm gives 4 short chirps with 4 yellow LED flashes when the test button is pressed,
it indicates that the Alarm has reached the maximum dust compensation. When this occurs, the
Alarm will continue to operate as normal, but there is an increased risk of false alarms caused by
dust contamination.
If contamination has occurred quickly (e.g. due to dust from carpets being replaced) and the Alarms
are sounding, the dust compensation may take some hours to operate. In this situation, remove the
Alarm from the ceiling, leave it disconnected for 5 minutes, then reinstall the unit (the air must be
clean i.e., dust and smoke free). The dust compensation will now operate quickly, within 60 seconds.
Temporarily Silencing the Fault chirps
If the test / hush button is pressed on an Alarm that is giving fault chirps and yellow LED fault
indicator flashes, the Alarm will be silenced (Fault Hush mode) for a period of 12 hours. However,
the Alarm will sound / function as normal within that period should it detect Fire (except if the
fault detected is a sensor fault). The yellow LED fault indicator will continue to flash as before to
indicate the fault is still present. This is a useful feature should the fault occur at night as it keeps the
disturbance at a time when people in the building are trying to sleep to a minimum. The fault chirps
would return 12 hours later, which perhaps may be a more suitable time to address the fault issue
with the Alarm. In case of low backup battery voltage and end of life fault chirps, this can be repeated
as required. A sensor fault condition can only be hushed once.