Date: Thu, 23 Oct 2025 17:00:55 +0000
Hi All. Following up on Gary’s mention of the technique for removing
tubing from the push-to-connect fittings: I recommend using the little SMA
connector wrench supplied with the Bruker console spares kit (see attached
photo). Sliding the square opening of this wrench along the tubing, you can
push on the connector ring with better leverage than you can normally achieve
without the tool.
This is a trick I learned from a visiting Bruker engineer years ago, and I
use it regularly. In particular, I have a probe that just doesn’t
want to give up its flush gas line, and using this wrench has mad the
removal possible.
Before replacement, I also recommend trimming off ~ 1cm from the end of the
tubing with a razor blade so you get a cleaner surface. Chewed-up tubing
appears to snag more, so trimming today will do your future self a favor.
Enjoy! – Josh
From: main_at_ammrl.groups.io on behalf of Gary Thompson via groups.io
> Date: Thursday, October 23, 2025 at 11:43 AM
> To: main_at_ammrl.groups.io <main_at_ammrl.groups.io>
> Subject: Re: [AMMRL] TXI probe removal advice
On the flush gas lines sometimes [especially if its stuck] you need to push=
the collar in push and then push the tube in a bit and then pull it out
Hope that helps
Regards
Gary
Dr Gary S Thompson NMR Facility Manager
CCPN CoI & Working Group Member
Wellcome Trust Biomolecular NMR Facility
School of Natural Sciences
University of Kent, Canterbury, Kent, England, CT2 7NZ
01227 82 7117
g.s.thompson_at_kent.ac.uk
orchid: orcid.org/0000-0001-9399-7636
On 23 Oct 2025, at 17:02, Michael Groves via groups.io wrote:
Hi Jim,
1. The gradient cable is a bayonet connector--turn the ring around the outside
counterclockwise to release it and then pull the connector straight out. Note--
some of these connectors kind of lock into place so you might have to push it
in towards the probe body to get it to release.
2. The flush gas tubing is held in by a quick connector--push in on the ring
around the tubing and pull the tubing out as you're pushing in on the ring.
Sometimes these kind of get locked into place if people yank on them too much
so the other alternative is to destroy the tubing and take it out piece by piece.
3. The flush gas is a 6mm OD piece of tubing. I think it might be HDPE but
I'm not 100% sure if I've misremembered that. Anyway, you can just swap it
out for some other 6mm tubing. Just run a piece of tubing from the port on
the back of the console to the flush port on the probe and it should work.
You can fish out that piece of tubing if you want but that might be more
work than you really want to do.
4. If you look up under the bottom of the probe, you'll see the ATM unit and
the V shaped notch in the side of the probe where the VT stuff goes in. If you
look up at the bottom, on the sides of the ATM unit 90 degrees from the side
with the notch, you'll see the two holes with the correct screws in them going
up into the bottom of the ATM unit. You should have a screwdriver attached to
the bottom of the probe with a length of toilet chain...
That screwdriver should fit in those holes and engage with the screws. And
those should be the only two holes that the screwdriver will do anything in.
Actually--this might be simpler. See here:
Cheers,
Mike
On Thursday, October 23, 2025 at 09:42:06 AM MDT, Baleja, James D via groups.io wrote:
Hi NMRers,
Showing my lack of knowledge here, but I’m trying to remove our Bru=
ker TXI probe and I have 4 questions.
1. How do I remove the gradient connection (the cable to the left of the
fuzzy photo)?
2. How do I remove the flush gas tube (the white tube to the back right)?
3. How do I replace the flush gas tube (it’s fragile and I partially
snapped it – although I can probably fix well enough with parafilm)?
4. How is the probe held in place? In the past it was brass rods with
knurls, but I think it’s a clip now?)
Next job is to see if I can find a manual somewhere!
I’m trying to see if I can get our ATM unit to respond while the
probe is outside the magnetic field. If not responding, I’ll send
the probe back for repairs
Thanks
Jim
--------------------------
Jim Baleja
Pronouns: he, him, his
Department of Medical Education (MV525S)
Department of Developmental, Molecular, and Chemical Biology (lab:Room MV614, rear)
Tufts University School of Medicine
136 Harrison Avenue
Boston, MA 02111
Tel: 617-636-6872
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#2950): https://urldefense.com/v3/__https://ammrl.groups=
.io/g/main/message/2950__;!!PvDODwlR4mBZyAb0!UB8I3k13FhZyx1R5oxGsDTxQ7cVtKc=
LBupfgiUVhuySV5KWAuzIDtpPwm4fP8Qu-ZQmvZPhrW1DlrwJfaMIc1uGZufUt$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/115912971=
/7559972__;!!PvDODwlR4mBZyAb0!UB8I3k13FhZyx1R5oxGsDTxQ7cVtKcLBupfgiUVhuySV5=
KWAuzIDtpPwm4fP8Qu-ZQmvZPhrW1DlrwJfaMIc1k2DqWEZ$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
(image/jpeg attachment: image001.jpg)