Fronius DPS 2500 Bedienungsanleitung Seite 50

To calculate the year of production of the device:
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Each device is provided with a serial number
The serial number consists of 8 digits - for example 28020099
The first two digits give the number from which the year of production of the device
can be calculated
This figure minus 11 gives the year of production
• For example: Serial number = 28020065, calculation of the year of production =
28 - 11 = 17, year of production = 2017