Dear spinlanders,
very long time to finally get around for a summary.
The problem was: Very sproadically we get the above error (about once a
day, but always in the late afternoon to evening, when noone is around
to restart it). The arm takes the sample, moves up and down and then
stops with the error meassage. IT takes 1-10 restarts, then everything
acts normal again until it happens again.
The solution was, to clean the sensor at the magnet bore, which detects
wheter the sample is up. This ultimately caused the error.
Thanks to all the people who offered solutions.
All the best, André Dallmann
On 19/03/2020 11:56, André Dallmann wrote:
> Dear spinlanders,
>
> we have a weird problem with our BACS. Very sproadically we get the
> above error (about ince a day, but always in the late afternoon to
> evening, when noone is around to restart it). The arm takes the
> sample, moves up and down and then stops with the error meassage. IT
> takes 1-10 restarts, then everything acts normal again until it
> happens again.
>
> We have had the electronics guys look at all the boards (which could
> be taken out), We changed the cable, we changed the vertical piston
> (although for an old piston). I am running out of ideas what tot try
> next and since our institute will be closed due to Corona, it is the
> ideal time to fiddle around with it.
>
> Any ideas? Feedback is very much appreciated.
>
> Thanks and all the best in these weird times, André
>
> On 28/06/2019 23:00, Andre Dallmann wrote:
>> Dear spinlanders,
>>
>> we have a weird problem which I hope especially the more experienced
>> generation can help me with. We have a BACS 120 unit on an AVII
>> 300MHz, which does not work properly. When starting from the ICONNMR
>> automation interface (either TS1.3 or TS2.1) we get an error of
>> "insufficient air pressure". However when I reset, it works
>> completely fine and runs through without problems. Sometimes it grabs
>> the first sample and changes it, but with the second at the latest it
>> stops. Most times it just stops already before ejecting the old
>> sample. I have tried all rebooting, cf combination, I have fiddled
>> around with all the air connections and have been steering the
>> carroussel and the arm through the jumper pins. Everything works but
>> for arm down (however that has been a problem for a while (maybe even
>> has been like that from the start, I only took over last year), but
>> never interfered with the automation).
>>
>>
>> Before I forget, I tried to access the BACS directly through UniTool
>> but this failed as he lacks some driver or cannot find the BACS
>> (effectively, do not remember the exact error message).
>>
>> I run out of ideas what to try. Any suggestions would be more than
>> welcome. Of course I am happy to contribute the succesful idea.
>>
>> Best regards, André
>>
--
Dr. André Dallmann
Leiter der NMR-Abteilung
Email: andre.dallmann_at_chemie.hu-berlin.de
Raum: 0'103
Telefon: 7341
Handy: 01797657855
ORCID-ID: https://orcid.org/0000-0002-0141-2635
Webseite: https://www.chemie.hu-berlin.de/en/forschung-en/nmr-spectroscopy/nmr-spectroscopy?set_language=en
Adresse:
Humboldt Universität zu Berlin
Institut für Chemie
AG NMR
Brook-Taylor-Str. 2
12489 Berlin
Deutschland
Received on Sun Aug 02 2020 - 23:54:11 MST