Control Panel - SPEX SamplePrep 6875D Operating Manual

5.2 Control Panel

The Control Panel displays the programmed run parameters, as shown in Figure 6. Changes to
the run settings, and to activate Mono or Dual grinding modes are made from this screen. In
Mono mode the programmed run parameters will Only operate Chamber 1. If Dual mode is
selected the run parameters (Figure 6), will operate Chamber 1 and Chamber 2 simultaneously.
To recall stored run protocols, touch the
screen. (See section 5.4 for more information on Saved Protocols)
To return to the Home Screen touch the Home Icon.
The following sequence of events will occur from the current settings in Figure 6: Only Grinding
Chamber 1 will run, as indicated by the MONO button color highlighted blue.
1. Precool - the coil is inactive while the vial cools in liquid nitrogen for 1 minute. Samples
must be precooled before grinding (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.
1300-87052-1A, REV 1
button located at the bottom right of the
Figure 6 – Control Panel
SPEX SamplePrep LLC
6875D Freezer/Mill
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