KERN & SOHN MLB 50-3C - Manual (Page 24)

24 MLB_C-BA-e-1431
9.3 P1-03 Temperature adjustment
We recommend occasionally checking the temperature level of the device using the
temperature calibration set MLB-A12.
The temperature is measured at three points and can be adjusted at these
temperature points.
Before you do this, allow the device to cool down for at least 3 hours after the last
heating phase.