6 Operation
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V-850 / V-855 Operation Manual, Version E
• Adjust the system pressure by means of the selection knob on the vacuum controller as needed.
• To stop the process, press the STOP button. The evaporating flask stops rotating and is removed
from the heating bath automatically, if configured accordingly.
NOTE
Depending on whether you have selected Aeration On/Off in the Options controller, the system is
either aerated directly after the STOP button was pressed (Aeration ON) or when the STOP button is
pressed a second time (Aeration OFF).
6 .4 .2
Advanced settings
To start a distillation, proceed as follows:
• Switch on the vacuum controller using the on/off switch on the right hand-side.
• Press the Library button. The Solvent library screen opens. Some parameters will differ slightly
depending on whether you have connected a chiller or not:
With chiller
Without chiller
• To select the desired solvent, use the selection knob of the vacuum controller. Turn the knob to the
left to go down within the alphabetical solvent list or turn it to the right to go up.
• Select the highlighted solvent by pressing
OK
.
• The proposed heating bath temperature can only be set on the heating bath. You can also change
the proposed heating bath temperature and adapt the setting on the heating bath accordingly.
To change the temperature, use the selection knob on the vacuum controller. Turning it to the
left decreases the bath temperature value, turning it to the right increases it. By pressing
OK
the
currently highlighted setting is saved and the value for pressure is adapted accordingly.
• The temperature for the cooling medium is set by using the selection knob on the vacuum
controller. Turning it to the left decreases the temperature value, turning it to the right increases it.
