6875 Freezer/Mill
Page 38 of 42 SPEX® SamplePrep LLC DEC 2015
11.0 TROUBLE-SHOOTING GUIDE
The unit does not turn on.
No current.
Power switch not turned on.
Blown fuse.
Blows fuses repeatedly.
Make sure power cord is plugged into
outlet and inlet.
Check outlet for power cord and correct as
required.
Press power switch to ON position.
Replace fuses.
Electrical short. Contact SPEX SamplePrep
and return for repair.
Safety interlock switch not
engaged.
Lid is not closed completely.
Push the lid closed and latch into place.
Liquid nitrogen sensor detects
inadequate liquid nitrogen
level.
Pour more liquid nitrogen into the tub.
Low liquid nitrogen levels.
Pour more liquid nitrogen into the tub.
Impactor doesn’t move
back and forth.
Water in vial has frozen
impactor.
Impactor is magnetized.
Too much sample is in the vial
or sample pieces are too large
Remove vial and replace vial and contents
with a dry unit or RAP ends of the vial on
counter to free impactor.
Remove impactor, turn end-for-end, or
demagnetize impactor and re-insert.
Remove some sample from the vial and
start again
Flanged End Plug doesn’t
come off cold vial.
End plug/tube joint too tight
when very cold.
Blunt end plug doesn’t
come off room-
temperature vial.
Warm vial under hot water. Use wide-jaw
pliers if necessary.
Water on extractor screws or
bell.
Ice in threaded hole in end
plug.
Dry extractor before each use.
Dry end plug thoroughly before using.
Plastic center cylinder
cracks.
Cylinder cleaned with alcohol
or other organic solvent.
Vial assembled when chilled.
Sample pieces acts as wedge.
Use bleach, detergent, and water to clean
cylinders.
Never force end plugs into a cylinder.
Reduce size of sample pieces. Make sure
there are no sample particles on cylinder
ends.
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