6875 Freezer/Mill
Page 16 of 42
SPEX® SamplePrep LLC
DEC 2015
5.2 Control Panel
(Cont’d)
As shown in Figure 8, the RUN TIME line indicates the 2 minute grinding period has been
completed for the 1
st
grinding Cycle out of 4 grinding Cycles. Between any two grinding periods is
the COOL DOWN stage. The COOL TIME line display, the time remaining in the COOL DOWN
stage. The Cool Time for 1 minute is set to start as indicating by the yellow symbol. At the end of
each Cool Time period a
green
check mark
is placed next to that field. The Rate is 10 cps (cycles
per second).
The STATUS BAR (top of screen) counts down the Time Remaining for the programmed run. The
Time Remaining to complete the programmed run is 11 minutes and 58 seconds, as displayed in
Figure 8. The bottom of the screen displays the Protocol Name for the run. If no Protocol Name
is assigned to the run as a Saved Protocol (Section 5.4) then the default name will be displayed as
COUNTDOWN. When the grinding program has ended, the screen will display RUN COMPLETE
(Figure 9). Touch the screen to return to the Control Panel.
5.2.2 Adjusting the Grinding Rate
While in the
CONTROL PANEL
screen, the only parameter that can be modified during grinding is
the RATE. It is adjusted by touching the right and left arrow buttons next to the Rate field.
Touching the right arrow increases the rate by 1 cps at a time, while touching the left arrow
decreases the rate by 1 cps. Tap or hold the right or left arrow buttons until the desired rate is
reached.
Rate is the number of back-and-forth cycles per second (cps) completed by the impactor
.
During
one cycle the impactor strikes both end plugs of the vial, therefore a rate of 10 cps is equivalent
to 20 impacts per second. The factory default setting for the rate is 10 cps. The maximum
grinding rate is 15 cps and the minimum is 5 cps.
Figure 9
– Run Complete Screen