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8 control panel, 1 setting the vibration frequency, 2 setting the running time – FRITSCH PULVERISETTE 23 User Manual

Page 25: 9 conducting a grinding operation, Using the planetary mill

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6.8 Control panel

6.8.1 Setting the vibration frequency

The vibration frequency can be set as 15-50 Hz (strokes per second) in 1

Hz steps using the +/- buttons (oscillation). The mill generates natural

oscillation of higher or lower intensity depending on the stroke fre-

quency. The set oscillation frequency is controlled by the microprocessor

and thus guarantees reproducible grinding.

6.8.2 Setting the running time

The running time is set using the +/- buttons (timer). In the factory set

mode, the two right-hand numbers show the minutes and the left-hand

number the hours. 1 hour 59 minutes is the maximum time which can be

set. For grinding operations that are accurate to the second use the

minutes/seconds timer (see Ä Chapter 4.6 ‘Changing the timer’

on page 17).

6.9 Conducting a grinding operation

After everything has been set up, as described in Ä Chapter 6 ‘Using the

planetary mill’ on page 19, press the START button on the control panel.

Do not touch or disturb the grinding bowl or the clamping device during

this time. The device will start up and run for the grinding time set on the

timer. Grinding can be paused at any time by pressing the STOP button.

The grinding running time on the timer stops and, once the START

button is pressed, resumes, accurate to the second. This can be carried

out, for example, in order to check the bowl temperature or the

clamping device. If the time is altered, the timer will be reset.

Using the planetary mill

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