Buchi B-491 User Manual

5 Putting into operation
32 R-210/215 Operation Manual, Version F
5 Putting into operation
This chapter describes how the instrument is installed and gives instructions on initial startup.
NOTE
Inspect the instrument for damages during unpacking. If necessary, prepare a status report immedi-
ately to inform the postal company, railway company or transportation company.
Keep the original packaging for future transportation.
5.1 Installation site
Place the instrument on a stable, horizontal plane and consider the maximum product dimensions.
Perform the distillations under vacuum with the Rotavapor placed under a fume hood. If this is not
possible due to shortage of space, mount the protective shield (optional accessory) and lead the
exhaust gas from the pump into the fume hood.
5.2 Electrical connections
ATTENTION
Make sure that the voltage on the socket corresponds to the voltage given on the type plate of the
instrument.
Always connect the instrument to an earthed socket. External connections and extension cables
must be provided with an earthed conductor lead (3-pole couplings, cable or plug equipment) as the
mains lead has a molded plug, thus avoiding risks due to inadvertent defective wiring.
Make sure that no electric sparks form in the instrument or its surroundings as they might damage
the instrument.
5.3 Commissioning the heating bath
Place the bath on the base plate of the Rotavapor.
If you need to adjust the position of the bath, lift
it up slightly at the right-hand side and pull or
push it to the desired position.
Fig. 5.1: Moving the heating bath

Buchi B-491 Specifications

General

Heating Bath Material	Stainless Steel
Type	Rotary Evaporator
Rotational Speed	20 - 280 rpm
Power Supply	230 V, 50/60 Hz
Evaporation Flask Volume	50 mL - 3 L
Vacuum System	Requires external vacuum pump
Material	Glass

Summary

Putting into operation

Installation site

Place the instrument on a stable, horizontal plane and consider maximum dimensions. Use a fume hood for distillations.

Electrical connections

Ensure socket voltage matches the instrument. Connect to an earthed socket and avoid sparks.

Commissioning the heating bath

Instructions for placing the heating bath on the Rotavapor base plate and adjusting its position.

Heating Bath B-495

Details the B-495 heating bath delivery status and its function.

Operation

Settings at the heating bath

Guidance on setting the heating bath temperature and general cautions.

Setting the heating bath temperature

Explains the auto-heating function and emphasizes the need for heating medium.

Switching the B-491 from water bath mode to oil bath mode

Step-by-step instructions to change the heating bath mode from water to oil.

Switching the B-491 from oil bath mode to water bath mode

Step-by-step instructions to change the heating bath mode from oil to water.

Selecting the set temperature

Ensures the heating bath temperature cannot be changed during distillation.

Changing/switching off the set temperature

Procedure to modify or disable the set temperature lock.