11 Maintenance
11.1 Changing the battery
If the time and date are no longer up-to-date after you switch the supply voltage back on, the inte‐
grated battery for buffering the real-time clock is discharged and must be replaced. Contact
KAESER SERVICE. With a discharged battery, the date and time of the controller always restarts
on the 1st of January 1970 at 01:00:00 in the time zone Europe/Berlin.
11 Maintenance
11.1 Changing the battery
No.: 901700 10 E
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 2.5.3
169
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