Checking The Liquid Nitrogen Level; Resources; Run History - SPEX SamplePrep 6875D Operating Manual

6.6 Checking the Liquid Nitrogen Level

In Manual Fill mode only, every time a vial is inserted into or removed from the Freezer/Mill,
note the level of liquid nitrogen in the tub. If the LN level is Low the mill will not run. Add LN as
needed until the unit sounds a series of "Beeps" indicating the proper operating LN level is
reached to prevent over filling the tub. A cumulative grinding time of more than thirty minutes
per run is not recommended, after that much grinding the liquid nitrogen level may become
low to the point where the LN sensor will shut down the mill. If the LN sensor stops the
grinding program, the mill can be refilled with liquid nitrogen and the grinding program
resumed where it stopped.

7.0 RESOURCES

The Resources screen button is located on the Home screen (Figure 5). To access the Resources
screen touch the Resources button. On the Resources screen, as seen in Figure 15, are
additional buttons to recall the run history, technical support, accessories (e.g. vials, holders,
etc.), and training information (e.g. how-to videos, operating manual). Located at the top right
on the Resources screen is the Settings button shaped as a Gear Icon. At the bottom right on
the Resources screen is the Home Icon button
the Home screen (Figure 5).

7.1 Run History

To recall the Run History touch the Run History button. The Date, Time, and Run Protocol data
are stored on this screen, as shown in Figure 16. The run information can be exported to other
computer devices via the USB Port located on the back of the Controller. To export run data
touch the Export History button at the bottom right of the screen. To clear Run History or
delete Run History permanently from data storage, touch the Clear History button at the
bottom left of the screen. To return to the Resources screen touch the back arrow button at
the top left corner of the screen.
1300-87052-1A, REV 1
. Touching the Home Icon returns the user to
Figure 15 – Resources screen
SPEX SamplePrep LLC
6875D Freezer/Mill
Gear Icon
(Settings)
Home Screen
Icon
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