Hi Everyone,
We have experienced a problem with our Bruker NMR CASE 24
autosampler recently. Last week, we were doing a run overnight
when one of the samples did not completely eject but rather only
made it to the top of the BST and not to the top of the autosampler
adapter collar. Therefore, when the autosampler rotated, it broke
the partially ejected tube and then dropped the next sample down
on top of this broken tube. Luckily, damage was minimal but we are
unsure as to what has gone wrong after only 3 months of trouble-
free use.
We have 90 psi going into the console with the console regulator
set at ~70 psi. Furthermore, the eject air can be controlled from the
BSMS keyboard and we have this maxed out at 750. We have
removed the autosampler base plate from the adapter collar and
done a realignment with the alignment tool Bruker supplies. This
did not help. We have also played a bit with the set screws the
troubleshooting manual suggests playing with. Specifically, it
suggests turning screws 1, 2, 5, and 6 a full turn counter-clockwise
which we did...no luck.
I should also mention that we have the newer black interface tube
inside the adapter collar rather than the older brown plastic ones.
Anybody have a fresh idea or two for me?
Thanks,
Mike
---------------------------------------------
Michael D. Lumsden, Ph.D.
NMR Facility Manager
Atlantic Region Magnetic Resonance Centre
Room 428, Department of Chemistry, Dalhousie University
Halifax, Nova Scotia, Canada, B3H 4J3
phone:(902)494-1635
FAX: (902)494-1310
email: mike.lumsden@dal.ca
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