Dear Colleague,
You may try to purge with warn Nitrogen gas.
1. Make a right angle shape copper tube which has smaller diameter than the Nitrogen outlet.
2. connect nitrogen supply and purge it until dissolve the ice block.
3. Make sure all ice has been dropped into the liquid nitrogen tank.
Hope that may help you.
Best regards,
Kwan
>>> "Robert Honeychuck" <rhoneych_at_gmu.edu> 03/12/02 06:15AM >>>
Our Spectrospin Bruker 300 MHz 52 mm magnet has developed a blockage
which I assume is due to solid H2O in one of the N2 exits. The other N2
exit is not blocked, and the N2 entrance is not blocked. I haven't tried
to pressurize the N2 can or poke through the ice, deciding instead to
ask if any of you have solved this problem before. I don't know what the
inside structure is in the region where I am guessing the blockage is,
so I am reluctant to poke at it.
Thank you very much.
Bob Honeychuck
George Mason University
Received on Wed Mar 13 2002 - 10:32:21 MST