6875 Freezer/Mill
Page 13 of 42 SPEX® SamplePrep LLC DEC 2015
5.2 Control Panel (Cont’d)
The following sequence of events will occur from the current settings in Figure 5
1. Precool - the coil is inactive while the vial cools in liquid nitrogen for 1 minute. Samples
must be precooled before grinding (5 to 10 minutes is recommended).
2. Cycle 1 - the coil is activated and the impactor grinds for 2 minutes at a rate of 10 cycles
per second (20 impacts per second).
3. Cool Time - the coil is inactive for 1 minute between grinding cycles allowing coil and
sample vial to cool down.
4. Cycle 2 - the coil is activated and the sample is ground for another 2 minutes.
5. Cool Time - the coil is inactive for 1 minute, as in step 3.
6. Cycle 3 - the coil is activated and the sample is ground for another 2 minutes.
7. Cool Time - the coil is inactive for 1 minute, as in step 5.
8. Cycle 4 – the coil is activated for the final 2 minute cycle. At the end of the final cycle the
program is complete and the sample has been ground for a total of 8 minutes.
In the CONTROL PANEL, The STATUS BAR (top of screen) counts down the Time Remaining for a
run. Before a run starts, the STATUS BAR will display STANDBY, as shown in Figure 5.
To change the settings of a selected field, press the arrow buttons on the CONTROL PANEL
screen. The left arrow buttons decrease the number displayed and the right arrow buttons
increase the number displayed.
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