You have a time window from 6 months before up to 6 months after the maintenance date. Choose one of the following methods to find the maintenance date:
Method 1:
As soon as the unit enters the time frame for a possible maintenance, it automatically displays the next maintenance date after switch on with the “next maint. in” message.
Method 2:
To view the next maintenance date (and other unit information), switch on the unit and press the button immediately when the “0” appears at the end of the switch-on procedure. Hold the button pressed until “next maint. in” is shown.
Method 3:
Refer to the unit’s Test Certificate.
Method 4:
Use the unit’s manufacturer date (mfd / DOM) and calculate the maintenance window with the according schedule. The unit’s (mfd / DOM) is located on the Test Certificate and on the serial label on the processing unit.
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