Buchi Rotavapo R-220 SE User Manual download pdf (Page 79)

8 Troubleshooting

79 R-220 SE Operation Manual, Version F

8 Troubleshooting

This chapter helps to resume operation after a problem has occurred with the instrument which does

not require special technical training. It lists possible occurrences, their probable cause and suggests

how to remedy the problem.

The troubleshooting table below lists possible malfunctions and errors of the instrument. The operator

is enabled to correct some of those problems or errors by him/herself. For this, appropriate corrective

measures are listed in the column “Remedy”.

8.1 Resetting the over-temperature protection

For safety reasons (e.g. if no heating medium is in the bath) the over-temperature protection mechani-

cally cuts off the heating current at temperatures above 205 °C. The overtemperature protection is

located at the heating element distribution box.

• Switch off the Rotavapor and wait some minutes for the heating elements to cool down after the

mechanism has been activated.

• Check for correct level of the heating transfer medium and take corrective actions if necessary!

• Push in the reset button by hand.

• Switch on the Rotavapor and perform a functional test of the heating.

➡ If the overtemperature problem still exists call for service!

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Buchi Rotavapo R-220 SE User Manual Page 79