Hi Hasan
Do you recall during the fill if both helium towers were frosty? And did the
non-filling side frost first? The blockage could be on that side not the
fill side. Another possibility would be a blockage in the transfer line.
That would cause I higher tank pressures but lower exhaust from the magnet.
Blowing helium gas into the magnet is how I have cleared blockages in past.
I have used the standard L-tubes and specialty made things as well. It is
always nerve racking to do this, but can be done. I usually do it right
before the fill.
Greg
Gregory P. Wylie, Ph.D
NMR Facility Manager
Texas A&M University
Department of Chemistry #3255
580 Ross St.
College Station, TX 77843-3255
gpwylie_at_tamu.edu
979.458.0705 (voice)
979.845.4719 (fax)
706.206.0007 (cell)
http://nmr.tamu.edu
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#2742): https://urldefense.com/v3/__https://ammrl.groups=
.io/g/main/message/2742__;!!PvDODwlR4mBZyAb0!SR2tJG6nS8vJq7qEnltQfdJCKwpJZ_=
cvA9b_0n9Arm2phTYP3tBgZ-LLPrHzSlh0frAP5SJx-lX0SiZtpcSkM9mvYcwz$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/114834537=
/7559972__;!!PvDODwlR4mBZyAb0!SR2tJG6nS8vJq7qEnltQfdJCKwpJZ_cvA9b_0n9Arm2ph=
TYP3tBgZ-LLPrHzSlh0frAP5SJx-lX0SiZtpcSkM3Qpwzdz$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Fri Aug 22 2025 - 06:44:46 MST