ABB EasyLine Series Instructions For Installation Start-Up And Operation page 112

112 EasyLine EL3000 Series Commissioning Instructions
Abort Automatic Calibration Manually
NOTE
If the automatic calibration is aborted, the analyzer is in an undefined
state (with respect to the calibration). For example, the zero point
calibration may have been completed and calculated, but the end-point
calibration has not yet been carried out. As a result, the automatic
calibration must be restarted after it has been aborted and allowed to run
through to the end.