One thing I'd like to add is that when the transport shuttle moves, it should
be a very smooth, quiet process.
If you hear any kind of hitch or grating noise (even a low volume one), then
it's definitely time to lubricate the rails, even if your sample transport
is working fine.
The silicone-free lube that Bruker gives you does a remarkably good job, while
also not attracting dust and dirt the way that most greases do.
You can just apply a dab to a Kim-wipe, and spread it evenly along those
lubrication points.
Ronald Shin
University of Alabama at Birmingham
Central Alabama High Field NMR Facility
> From: main_at_ammrl.groups.io <main_at_ammrl.groups.io> On Behalf Of Kenneth Sharp-Knott via groups.io
> Sent: Monday, April 22, 2024 10:09 AM
> To: ammrl_at_groups.io
> Subject: [AMMRL] SampleCase issue solved
Essentially, my samples were failing to unload properly and getting stuck at
the top of the transport tube. What turned out to be the problem was the
transport rail (from the tube to the bore) needed to be lubricated. This
is mandatory maintenance every 6-12 months., which I had not done for two
years. I have noted that when properly lubricated, the shuttle takes about
3 seconds to move from the bore to the transport tube. Mine took close to
10 seconds. There appears to be some delay period after which the transport
tube opens the sample will drop. My samples where 'almost' getting there in
time so that every once in a while, they would drop before completely over
the hole and get stuck at the top.
The recommended lubricant is non-silicone based (I would be interested to know why).
Here is the suggested lubricant and the areas on the rail requiring lubrication.
Ken Sharp-Knott
Manager of Analytical Services and the NMR Facility
Department of Chemistry
Virginia Tech
(540)267-6502 (Cell)
(540)231-0885 (Office)
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Received on Mon Apr 22 2024 - 09:32:47 MST