Retsch Cryomill - Manual (Page 41)

Operating the machine
41
– The first cycle consists of the precooling phase and grinding time
–
Cycles 2 to 9 each comprise an intermediate cooling and grinding.
• Press the respective buttons (B8) to set the grinding cycles.
•
+
Pressing briefly increases the number.
•
-
Pressing briefly reduces the number.
– The display runs more quickly when pressed longer.
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5.9 Setting the precooling time
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NOTICE
The machine runs at a fixed frequency of 5 Hz during the precooling and
intermediate cooling.
A range of from 30 seconds to 99 minutes can be set for precooling.
Fig. 36: Setting precooling
After switching on, the last used grinding parameters are displayed and can be
used.
• Switch the CryoMill on at the main switch.
• Press the button (B10) to set precooling
– The precooling LED lights up.
You can choose between two precooling versions:
5.9.1 Precooling with definable precooling time
• Use the buttons (B9) to set precooling.
•
+
Pressing briefly increases the duration.
•
-
Pressing briefly shortens the duration.
The display runs more quickly when pressed longer.
5.9.2 Automatic precooling
In the case of automatic precooling the grinding only starts once the entire system
has been sufficiently cooled. This is checked by a sensor (see chapter
>>Connecting the cooling agent supply <<)
Switch automatic precooling on
• Press the button (B10) for at least 2 seconds.
B10 B9
ap