Manual

5 Putting into operation

41 R-210/215 Operation Manual, Version F

5.11 Installing the vapor temperature sensor

To measure the vapor temperature during

operation, the vapor temperature sensor must

be connected.

For this purpose:

• Plug it into the socket at the rear of the

R-215 a (with an R-210 this is not possible).

• Introduce the sensor into the corresponding

opening in the condenser and tighten it with

the GL-14 screw.

Fig. 5.14: Vapor temperature sensor

5.12 Functional test

Carry out the functional test after all described steps for putting the instrument into operation are

ﬁnished.

Vacuum tightness test

NOTE

The vacuum tightness test can only be carried out with a vacuum controller installed or when you

have a pressure measuring device (manometer) connected to the tube between the pump and the

Rotavapor.

For this purpose, proceed as follows:

• Start the instrument and adjust the rotation speed as desired.

• Apply a vacuum. The instrument is now evacuated while the ﬂask is rotating.

• Now interrupt the vacuum to the Rotavapor by carefully bending the tube. You should see on

the vacuum controller or on the measuring device whether the vacuum in the system remains

constant, i.e. the pressure increase per minute should be less than 3 mbar.

• If the vacuum does not remain constant, check all tube clips, retighten them and grease all ball

joints at the condenser side.

• If that still does not help, replace the seals as described in chapter 7.3.2.

• Afterwards, repeat the steps described above until the tightness test is passed.

Rotation speed test (for R-215 only)

To carry out the rotation speed test at the R-215, proceed as follows:

• Slowly turn the adjusting knob for the rotation speed on the Rotavapor clockwise from the

minimum to the maximum setting. At rotations per minute > 20 the motor should turn smoothly at

each knob position. When the knob is not turned, the indication of the rotation speed should only

change by two digits up or down. In case the rotation speed does not remain constant or there are

problems with the motor, call the BUCHI customer service.