4.10
KEYPAD AND DISPLAY
The keypad and display is a rectangular panel with twenty keys, three numeric LEDs, and four
indicator LEDs. The keys are used to program and run the Freezer/Mill. During programming
the LEDs display the control settings; when the mill is running the LEDs display the actual
conditions of operation. In addition to numbers these LEDs display five combinations of letters:
LID (the lid is open), STO (store), PAU/SE (pause), LN (add liquid nitrogen) and END (the
program is finished).
4.11
KEYPAD FUNCTIONS BY KEY
Single Key Functions by Columns, Starting From Top Left:
RUN: The RUN key initiates the programmed grinding cycle. This is the automatic mode. The
RUN key also restarts grinding when a pause condition exists. The mill cannot be started if the
lid is ajar (see lid fault condition, page 11) or the liquid nitrogen level is too low (see LN fault
condition, page 11).
STP: The STOP key aborts a grinding cycle and returns the mill to the settings programmed at
the beginning of the run. This is the stop mode. (Display = “END”)
Page 8 of 28
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