Important Guidelines - VWR RV 8 Indicationes De Seguridad

Function Keys
Item Designation
1 "Power" key
3 Rotating knob speed/
Rotation drive "START/STOP"
5 Power Switch

Important Guidelines

Distillation is a thermal separating process for liquid compounds based on substance-specific,
pressure-dependent boiling points through evaporation and subsequent condensation.
The boiling point temperature decreases with decreasing external pressure which means that work is usually
done under reduced pressure. In this way the heating bath can be maintained at a constant temperature (e.g.
60 °C). Using the vacuum, the boiling point is set with a steam temperature of approx. 40 °C. The cooling
water for the condensation condenser should not be warmer than 20 °C (60-40-20 rule).
A chemical resistant membrane pump with a vacuum controller should be used to create the vacuum. The
pump is protected from solvent residue by the addition of a Woulff bottle and/or a vacuum separator.
Working with a jet pump to create a vacuum can only be recommended to a limited extent as the solvents
may contaminate the environment when using these systems.
Speed, temperature, flask size and system pressure all affect the evaporator air capacity.
The optimum capacity of the flow-through condenser is approx. 60%.
This corresponds to condensation on approx. 2/3 of the cooling coil. With larger capacities there is the risk
that the uncondensed solvent vapor will be extracted.
The device is equipped with a Lift safety unit.
If the power cuts out, the evaporation flask is automatically lifted out of the heating bath
by an integrated gas spring.
CAUTION! The safety lift must be checked daily before use. See safety notes/safety lift!
The glass apparatus can be evacuated after power outage!
When using other types of condensers such as dry ice or intensive condensers as well as when using return
distillation distributors with slip-on condensers, it may be necessary to reduce the mass of the media to
compensate for the mass of this additional glassware. Thus, prior to distillation, check whether the lift goes up
without power when laden with the glass and distillation material.
The device is designed for operation with a cooling water supply system (e.g. laboratory thermostat), but can
also be run off a water supply line. Please refer to the Product Specifications for information on cooling water
pressure, temperature constancy, and flow rate.
Item Designation
2 Display window/speed
4 "Lift lock" key
6 Hand detection sensor
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