6875 Freezer/Mill
Page 14 of 42 SPEX® SamplePrep LLC DEC 2015
5.2.1 Starting a Programmed Run
To run the program displayed on the CONTROL PANEL screen, touch button. The
Freezer/Mill can be started, stopped, or paused in the middle of a grinding program from the
button selections to the right of the screen.
Open the lid and place the loaded sample vial in Coil Vial Opening, then SLOWLY close the lid to
keep the liquid nitrogen from splashing or spilling out the tub. Two additional loaded sample
vials can be placed in the precooling basket while running sample. By precooling the additional
loaded sample vials, the PRECOOL time for these samples can be decreased or eliminated during
the next run. After all vials have been loaded, lower the lid and secure the latch. If the liquid
nitrogen in the tub is not at the correct operating level, then the screen will display LN LEVEL
LOW (Figure 6). Add more LN and touch RESUME to begin operation.
If the lid is not completely closed and latched, the screen will display LID OPEN, as shown in
Figure 7. To abort the program touch the button. To continue with the program touch
the RESUME button after the lid has been completely closed. When the tub is filled with liquid
nitrogen to the correct level, and the lid is securely latched, the STATUS BAR will turn green and
begin counting down. The PRECOOL sequence will start indicating the beginning of the grinding
program.
Figure 6 – LN Level Low Screen
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