VACUUBRAND CVC 3000 detect - Manual (Page 46)

page 46 of 74
Vacuum for distillation and evaporation
(e.g., rotary evaporator)
1. Fully automatic determination the boiling point
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Select ” detect” function.
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Start process by pressing ”START/STOP” key.
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The ”detect” function allows an automatic determination of the solvent’s
boiling vacuum. In case of solvent mixtures, the controller detects the
boiling vacuum of the solvent with the highest boiling point. The con-
troller switches automatically to the ”Vac Control” function once the
boiling vacuum has been determined. The determined boiling vacuum
is used in the ”Vac Control” function as ”Set vacuum”.
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By switching the in-line valve (two-point control), the determined boil-
ing vacuum (used as ”Set vacuum” in the ”Vac Control” function) is
kept constant within the limits of the hysteresis. If the boiling vacuum
changes, e.g., due to cooling of the solvent, either turn the selection
knob to adjust the ”Set vacuum” or press ”START/STOP” key twice to
restart the ”detect” function.
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When setting a value for ”Duration” the controller stops control when
”Duration” has passed.
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If no ”Duration” is preset, control has to be finished by pressing the
”START/STOP” key.
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When pressing ”STOP” key, or after process stop due to elapsed ”Du-
ration” (preset process time), the controller is set again to the ”detect”
function.
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If, in case of solvent mixtures, the solvent with the highest boiling point
Assembly of a vacuum system
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Assemble vacuum connection lines between controller, vacuum pump
(diaphragm pump with in-line valve or Vacuum-Management-System)
and vacuum application.
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Assemble electrical connections.
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Connect coolant if necessary.
Application examples