6 | Operation
BÜCHI Labortechnik AG
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Operation Manual Rotavapor® R-300
6.2.1
Operating the Rotavapor without control system (interface)
2
1
Fig. 37: Components for manual control of Rotavapor R-300
1
Control knob on rotary drive unit
2
Control knob on heating bath
NOTE
When controlling the Rotavapor R-300 manually, it is important to adjust and switch
on the laboratory equipment involved in the correct order.
To achieve optimum distillation results, the following procedure is recommended:
u
Prepare the heating bath, see Chapter 6.1.1 "Preparing the heating bath",
page 49, and start the heating process by briefly pressing the control knob on the
heating bath (2).
u
Switch on the cooling system. Set the coolant temperature (max. 20 °C) or the
flow rate (at least 40 L/h).
u
Switch on the Rotavapor at the master switch.
u
Fit the filled evaporating flask and the receiving flask.
u
Close the glass stopcock.
u
Press the control knob on the rotary drive unit (1) and start rotation at a slow
speed. The rotation speed can be adjusted by means of the control knob.
u
Switch on the vacuum pump and, if necessary, set the required pressure. The
boiling point of the solvent must be 20 °C below the temperature of the heating
bath.
