Heidolph Hei-VAP Expert Operating Instructions Manual page 126

Operation
As soon as the temperature at the AUTOaccurate sensor has dropped by a defined
value, the system is evacuated and the evaporation process starts again. If the
temperature rise at the AUTOaccurate sensor reaches the defined intensity again (at
relatively higher vacuum pressure), the vacuum pump is switched off again, etc.
In this way, a consistent performance is achieved in the processing of solvents or
mixtures throughout the distillation process.
During multiple solvent distillation, the described process steps are repeated until a
defined maximum vacuum pressure is reached (input value
distillation process is then switched off.
Advanced
➜ Activate the
Touch a parameter's field to open the on-screen keyboard and set a desired value. The
input values are accepted without a security prompt:
– Coolant temperature (setting range -10 – 20 °C)
– Rotation speed (10 – 280 rpm)
– Heating bath temperature (20 – 80 °C)
➜
Switch to the second page of the screen (swipe left on the touch screen) and set
the type of distillation process, the intensity and a final pressure (for multiple
solvent distillation only):
mode and change to
128
End pressure
Dynamic AUTOaccurate
). The
: