8000M Mixer/Mill
Page 10 of 27 SPEX SamplePrep LLC January 2010
4.4.3 Starting and Running the Mixer/Mill
Push the START button to begin a grinding cycle. There will be a short pause while the lid
interlock engages, and then the Mixer/Mill motor will start. The timer counts down 5 seconds
at a time, showing the time left in the run. When the timer reaches zero and the motor shuts
off, the timer will display RUN COMPLETE for 5 seconds while the lid latch stays locked. This
allows the clamp mechanism to slow down. When the interlock releases the lid (with an audible
click), the timer display will return to its prior setting. Never try to open the lid before the
interlock releases; this can damage the lid latch.
NOTE: Before setting the timer and operating the 8000D Mixer/Mill, always clamp a grinding
vial firmly in place.
4.4.4 Using the Stop and Pause Buttons
To stop the mill during a run, push the STOP button. This will shut off the motor and re-set the
timer. RUN COMPLETE will be displayed for 5 seconds and the lid will stay latched. After 5
seconds the original timer setting will re-appear and the lid latch will release.
To have the mill pause during a run and retain the timer setting, push the PAUSE button. The
motor will shut off and PAUSED will appear in the display. The lid latch will not release. To
resume the run, push START; the timer will briefly display the exact number of seconds left in
the run and then count down in 5-second increments. To abort the run, push STOP; RUN
COMPLETE will be displayed for five seconds and the lid latch will release.
4.4.5 Timer/Lid Latch Interlock
The timer is connected to the safety interlock, a latch in the lid that hooks under the front edge
of the cabinet when the START button is pressed, and locks the lid down. If the Mixer/Mill lid
cannot be locked down when START is pressed, the motor will not start and ERROR: LATCH
FAILURE will appear on the timer display. When this happens, correct any problems with the
interlock latch, then press STOP to clear ERROR LATCH FAILURE from the display, and restore
the timer setting. Only when the timer setting is restored can the Mixer/Mill be started again.
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