One more note on cleaning: to remove old grease, hexanes may be more effective
than methanol.
________________________________
> From: main_at_ammrl.groups.io on behalf of Justin Douglas via groups.io
> Sent: Wednesday, September 25, 2024 2:25 PM
> To: main_at_ammrl.groups.io <main_at_ammrl.groups.io>
> Subject: [AMMRL] BACs downwards motion failed
Hello,
Our BACs autosampler (on a Bruker AV400) is producing a "DOWNWARDS MOTION FAILED"
error, which disrupts the queue in ICON (and leaves the lift air on, sometimes
all night!). The advice I was given by Bruker was to clean the arm. It is not
100% clear to me what specifically needs to be cleaned. In addition, we are
getting this error more and more frequently and I'm having to clean the arm more
and more often. It is not clear that it is really that dirty!
My method is to take special care to remove the arm, remove the bolts with an
allen wrench and wipe the piston thoroughly with chemwipes and methanol. I
also use q-tips and methanol to swab the o-rings, etc. I'm wondering if
anyone has any more specific advice on how to stop (or at least decrease
the frequency of) these DOWNWARD MOTION FAILED errors.
Thanks
Justin
Justin Douglas
he/him/his
NMR core lab
University of Kansas
justindouglas_at_ku.edu
justindo_at_gmail.com
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Received on Wed Sep 25 2024 - 15:43:50 MST