6875D Freezer/Mill
1300-87052-1A, REV 1
SPEX SamplePrep LLC
Page 17 of 36
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.
5.2.3 Stopping or Pausing a Run
To stop a program, touch the button on the
CONTROL PANEL
screen and the program
will end. If the button is touched after the program has stopped then the entire
program will start over.
To pause during a grinding program, touch the button. The
RUN
will hold the settings
at that moment (elapsed time, cycle, etc.). To resume the program, touch the Resume button.
This will restart the program at the point at which it was paused. Alternatively, pressing STOP
will end the program.
5.3 Changing Settings
To change parameters (precool time, grinding time, cool down time, cycles and rate), touch the
arrow buttons on the
CONTROL PANEL
screen. The changes will appear in the blue area
between the arrows, as shown in Figure 11.
The CONTROL PANEL allows the user to change the parameters by touching the right and left
arrows next to the field. Touching the right arrow increases the parameter, while touching the
left arrow decreases the parameter. Tap or hold the right or left arrow buttons until the
desired number is reached. The arrow key will turn blue when the maximum or minimum
number is exceeded.
To run a program with the new settings, touch the button.
Left Arrow Decreases
the Parameter
Right Arrow Increases
the Parameter
Figure 11
–
Changing Settings
Store and Recall
Protocols
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