Finally my Delta is up and running. After following the delta calibration procedure it was time to run a mesh compensation. Probe radius 200 and spacing 20. I think I can be happy with the result.
Number of points: 305
Probe area: 1296.0 cm²
Maximum deviations: -0.049 / 0.051 mm
Mean error: -0.003 mm
RMS error: 0.016 mm
Bed: 8mm cast aluminum, diameter 510mm
Build height: 925mm
Smart effector