Hi Silas
Probably, the seal of your green vent tube is not secure in the push
connect mode to the black radiator assembly. For all my old i.e. Oxford
magnets, for decades we have been using rubber tubing in the LN2 exhaust
towers and the water vapor in the atmosphere nicely condenses at the exit
point as ice bulbs, which is a good indication that the N2 port is
exhausting without blockage. So, what you see, though not expected if the
seal were tight, is perhaps OK. When you fill LN2, do you still keep
this exhaust configuration as it is ?
Best
Rajan
On Wed, May 7, 2025 at 11:27 PM Brown, Silas via groups.io wrote:
>
> Hello Everyone,
> We noticed today that we have some ice on the exterior of the nitrogen
> exhaust line (500 MHz Bruker Ultrashield) see photo attached. I just wanted
> to make sure this is not something I should be concerned about.
>
> It's warming up and we have had a lot of rain these past few days (Western
> Massachusetts) so I am just thinking some condensation formed on the line,
> and since it is near the metal nut connection to the green tube it got
> colder than anywhere else so ice formed.
>
> Additional context,
> I do not feel any flow of nitrogen near the connections when the ice is
> removed.
> A nitrogen fill was done today, the day the ice was noticed.
> We had a normal amount of helium use from last week.
>
>
> I just wanted to reach out to the minds of AMMRL to see if I should
> contact Bruker about this or if I can tell people its okay.
>
> Sincerely,
> Silas
>
>
> P.S.
> Thank you everyone who responded to my last question, sadly by the time I
> received the emails I had restarted the system and it cleared the error. If
> the issue of the acquisition running message appears again I will let you
> know how that goes.
>
> --
>
> *Silas Brown **(He/Him)**, Instrumentation Specialist *
> Department of Chemistry
> Williams College
> 150B Morley Science Laboratories
> Williamstown, Ma. 01267
> E: seb14_at_Williams.edu | P: 413.597.3544
>
>
>
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#2309): https://urldefense.com/v3/__https://ammrl.groups=
.io/g/main/message/2309__;!!PvDODwlR4mBZyAb0!UMgZlGybiJPNcogvMhbLOKxifJdX3s=
oUFTH1zt0CVpxf-BwnyJ8grGj0l7-nmkFwg05CnSfpOAGKIVG7i1-JAsyM$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/112728296=
/7559972__;!!PvDODwlR4mBZyAb0!UMgZlGybiJPNcogvMhbLOKxifJdX3soUFTH1zt0CVpxf-=
BwnyJ8grGj0l7-nmkFwg05CnSfpOAGKIVG7i_hXw-wX$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Wed May 07 2025 - 18:14:45 MST