ABB civile Elos Series User Instructions page 39

O P E R AT I N G I N T H E C A S E O F A B L A C K O U T
The device is fitted with a backup battery that guarantees updating of the time and the day
of the week in the case of a blackout. There is an autonomy of 48 hours under the follow-
ing conditions when the power supply is provided exclusively by the battery:
• display time active
• measure and temperature display not active (dashes are displayed)
• backlighting not active
• relay switching not enabled (the relay contact is open)
• front keys not active (except the simultaneous pressing of all four keys). In the absence
of the power supply the simultaneous pressing of all four front keys causes disconnec-
tion of the backup battery inside the device.
This function is used to conserve the efficiency of the battery when the device is not used
for a long period. The battery is automatically reconnected once the device is connected to
the electricity mains network. The set programs are not lost either in the case of a black-
out or in the case of battery disconnection.
USER INSTRUCTIONS
39
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