Application Examples; Vacuum For Filtration And Suction - vacuubrand ME 4C NT VARIO Instructions For Use Manual

Application examples

Assembly of a vacuum system
+ Assemble vacuum connection lines between vacuum pump, CVC
3000 and vacuum application.
+ Assemble the vacuum connection line between the controller and the
vacuum application, if the controller is not part of a pumping unit.
+ Assemble electrical connections.
+ Connect coolant if necessary.

Vacuum for filtration and suction

+ Select "Pump down" function.
+ If necessary, set value for "Speed" (high or low pumping speed). Re-
duce the speed in case of fast sedimentation (formation of a filter cake).
+ Set "Minimum" to a value which provides adequate suction but does
not lead to evaporation of the solvent.
+ Start process by pressing "START/STOP" key.
alternatively:
+ Select "Vac control" function.
+ Set "Set vacuum" to a value which does not lead to evaporation of the
solvent.
+ If necessary, set value for "Speed" (high or low pumping speed). Re-
duce the speed in case of fast sedimentation (formation of a filter cake).
+ Set "Maximum" pressure setting so that pump will switch off at the end
of the filtration process, or in the event that a filter cake cracks, leading
to a sudden pressure increase.
+ Start process by pressing "START/STOP" key.
+ Tip for filtration: Adjust preset pressure to a value well above the
boiling pressure of the solvent (e.g., for water >>15 Torr (20 mbar)).
Set the maximum pressure to e.g., 375 Torr (500 mbar). Once the fil-
tration has finished, the pressure increases and the pump is switched
off automatically.
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