8000M Mixer/Mill
Page 14 of 27 SPEX SamplePrep LLC January 2010
6.0 MAINTENANCE
The 8000M MIXER/MILL has been designed to provide trouble-free operation over a long period of
time. To assure proper performance, perhaps the most important factor is overall cleanliness. Any
spilled powders or liquids should be wiped up immediately with a damp cotton cloth. This should
also be done occasionally after extended periods of use. This should minimize the buildup of any
powders, mold/mildew, or unsightly gunk over the life of the unit. To maintain the exterior of the
unit, first disconnect the 8000M MIXER/MILL, then an occasional spraying and wiping down
with a mild window cleaner or similar product will be sufficient.
NOTE: Always unplug the Mixer/Mill before any cleanup or maintenance work.
The threads of the clamp screw should be kept clean to avoid jamming. The foam pads in the
clamp should be replaced when damaged, worn, or missing.
If the drive belt becomes loose, tighten it by moving the motor back: loosen the motor
mounting bolts, move the motor, and tighten the bolts. If the drive belt breaks or becomes
heavily worn, replace it. A properly tensioned drive belt can be depressed about ½” midway
between the sprockets.
The flywheel and motor sprockets should be checked from time to time to make sure that they
are tight on their shafts; if either sprocket loosens it must be realigned with the other and the
set screws tightened.
The sealed ball bearings in the clamp and pillow block assemblies are lubricated for life and
require no maintenance. The shaft bearings of the motor are lubricated for ten years of
intermittent use or one year of heavy use.
The clamp retaining spring assembly includes two open ball-and-socket joints that are
lubricated with heavy-duty automotive-type lithium grease. If these bearings dry out they
should be taken apart and regreased.
The 8000M Mixer/Mill is intended for intermittent use with running times that are typically 5 to
20 minutes long. Under those conditions it should run for many years without maintenance
other than that described above. Prolonged periods (over 100 min.) of continuous running, as
when the mill is used for mechanical alloying, require extra maintenance and may void the
warranty by wearing out key parts. The 8000M Mixer/Mill is warranted against defects of
materials and workmanship for one year from date of shipment. However, extreme uses of the
mill, such as mechanical alloying, may modify or void the warranty. Contact us for further
information about operating your mill under unusual circumstances.
If you have any questions about the operation and maintenance of your 8000D Mixer/Mill,
please contact our specialists by phone at 1-800 LAB-SPEX (522-7739) or 732-623-0465, or by
e-mail at sampleprep@spexcsp.com
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