Retsch Cryomill - Manual (Page 29)

Operating the machine
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5.4 Operating elements and displays
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Fig. 19: Control unit
Element Description Function
B1
LED on – valve open
LED off – valve closed
Indicates whether the internal solenoid valve on the
liquid nitrogen supply line is open or closed.
B2
LED on – liquid nitrogen is flowing
LED off – no liquid nitrogen
Indicates that liquid nitrogen is flowing into the device.
B3
LED precooling is running (Vkz) Precooling is taking place / lights up when values are
set
B4 LED grinding is running (Mz) The sample is ground / lights up when values are set
B5
LED intermediate cooling is running
(Zkz) Intermediate cooling is taking plate / lights up when
values are set
B7
Frequency minus button In setting mode and in operating mode:
reduces the set frequency by 1 Hz (1/s). Continuous
pressing switches on fast scrolling of numbers.
Frequency plus button In setting mode and in operating mode:
increases the set frequency by 1 Hz (1/s). Continuous
pressing switches on fast scrolling of numbers.
B8
Cooling cycle minus button Reduces the number of total cycles by 1
Cooling cycle plus button Increases the number of total cycles by 1
B9
Time minus button In setting mode and in operating mode:
Reducing the set
•
Precooling
• Grinding time
• Intermediate cooling time
B10 B7 B8 B15
B2 B1
B11 B12 B13 B9
B14
B3 B4 B5