5 | Installation
BÜCHI Labortechnik AG
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Operation Manual Rotavapor® R-300
5.17.4
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. The vacuum is
measured by means of the VacuBox, which is also connected to the Woulff bottle.
Vacu
Box
Rotavapor
R-300
Vacuum Pump
V-300 / V-600
Extraction
device
5
6
3
2
1
4
Fig. 27: Coolant tubing connections in a BUCHI distillation system
1
Secondary cold trap outlet
4
Woulff bottle outlet (PUMP)
2
Vacuum pump outlet
5
Woulff bottle inlet (CONTR)
3
Vacuum pump inlet
6
VacuBox valve connection
u
Connect a tube between the Rotavapor R-300 and the top inlet of the Woulff
bottle.
u
Connect a tube between the outlet of the Woulff bottle marked PUMP (4) and the
pump inlet (3).
u
Connect the secondary cold trap 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
indicated 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. 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.
