Retsch Cryomill - Manual (Page 45)

Operating the machine
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Fig. 43: Ending the grinding process
• Press the STOP button to end the grinding process.
The STOP LED (red) lights up. At the same time the solenoid valve closes.
In the event that the supply of liquid nitrogen has been interrupted during
operation, this is indicated by the flashing of the remaining time LED (B6) at the
end of the grinding time.
Pressing once interrupts the grinding process, for example to appraise the grinding
sample. The remaining grinding time is still visible on the display.
By pressing the start button again, the mill continues running until the grinding time
has completely expired.
Pressing the stop button twice aborts the grinding process. The machine is now in
start mode.
By pressing the start button, the display is activated again and the grinding time is
reset to the last start setting.
The duration can be changed during the grinding process. The grinding process is
automatically ended on expiry of the grinding time. The display is reset to the last
value started.
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5.16 Operating hours display
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• Switch the device off at the mains switch.
Fig. 44: Switching the device on and off
• Keep the buttons cryo cycles (B8) + and frequency (B7) - pressed
simultaneously and with the buttons pressed, switch the device on at the
mains switch.
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