VACUUBRAND CVC 3000 E - Manual (Page 44)

page 44 of 75
alternatively:
For diaphragm pump with in-line valve and/or Vacuum-Management-
System
+
Select ” Vac control” function.
+
Set ”Set vacuum” (and ”Hysteresis”, if necessary) depending on the
solvent and the bath temperature.
+
Considering the hysteresis and the bath temperature, set ”Set vacu-
um” to a value which ensures that the solvent will definitely boil.
+
To set ”Maximum” is usually not necessary, unlike filtrations, because
the pressure does not increase at the end of the evaporation.
+
Set a value for ”Duration” if the process should be terminated auto-
matically after a definite time.
+
Use ”Delay” to pump out condensate and clean the pump at the end of
the process. The in-line valve is closed and so the pump is separated
from the application. During ”Delay” the coolant valve is still open.
+
Start process by pressing ”START/STOP” key.
+
Select function ” VACUULAN”.
+
Set ”Set vacuum” to a pressure which can be reached reliably in the
vacuum network. Take account of the ultimate vacuum of the pump
and of the system’s leak rate in case of no vacuum demand.
+
Set ”Switch on” pressure appropriately to ensure sufficient vacuum for
all connected applications.
+
Set ”Delay” if necessary.
+
Start process by pressing ”START/STOP” key.
Vacuum for VACUU•LAN networks
Vacuum for distillation and evaporation
(e.g., rotary evaporator)
Semi-automatic distillation and evaporation
+
Select ” Pump down” function.
+
Start process by pressing ”START/STOP” key.
+
Observe process. As soon as evaporation starts, press ”MODE” key
(switching to ”Vac control”). The vacuum level is kept constant (at the
boiling pressure). Fine tuning of the vacuum value is possible by turn-
ing the selection knob.