5 | Installation BÜCHI Labortechnik AG
36/65 Operation Manual Vacuum Pump V-600
5.13.3 Overview: setting up vacuum tubing connections
The vacuum tubing connections in a typical BUCHI distillation system lead from the
Rotavapor R-300 via a Woulff bottle to the Vacuum Pump V-300/V-600. The vacuum
is measured by means of the VacuBox, which is also connected to the Woulff bottle.
Fig.22: Coolant tubing connections in a BUCHI distillation system
1 Secondary condenser outlet 4 Woulff bottle outlet (PUMP)
2 Vacuum Pump V-300/V-600 outlet 5 Woulff bottle inlet (CONTR)
3 Vacuum Pump V-300/V-600 inlet 6 VacuBox vacuum connection
u Connect a tube between the Rotavapor R-300 and the top inlet of the Woulff bot-
tle.
u Connect a tube between the outlet of the Woulff bottle marked PUMP (4) and the
pump inlet (3).
u Connect the secondary condenser to the pump outlet (2).
u For measuring and controlling the vacuum, connect a tube between the inlet of the
Woulff bottle marked CONTR (5) and the VacuBox (6).
The pressure is measured in the VacuBox. The current working pressure can be indi-
cated and controlled by means of the Interface I-300/I-300 Pro.
NOTE
The VacuBox and Woulff bottle can be mounted either on the Rotavapor R-300 or
the Vacuum Pump V-300/V-600. What is important is that the VacuBox and Woulff
bottle are as close as possible to each other (on the same device) as otherwise there
is a vacuum control lag.
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