1) Remove wallets, credit cards, mechanical watches, and jewelry that could be affected by strong magnetic fields.
2) Check the level of liquid nitrogen (LN2) in the NMR magnet. Replace the cap on the LN2 port.
3) Remove the cap from the LN2 vent port and replace it with the short hose that is usually on the floor in the SW corner of the room.
4) Take down the insulated transfer pipe and long hose from the pegboard. Put the hose through the pipe and rest the pipe between the magnet and the storage dewar.
5) Put the hose end onto the hose barb on the storage dewar.
6) Open the LN2 supply valve on the storage dewar a small amount and hold the transfer pipe about 6" above the level of the storage dewar and magnet.
7) After the hoses have frozen and can support the weight of the transfer pipe, close the supple valve.
8) Using your hand or the crook of your elbow, warm the end of the rubber hose next to the magnet until it becomes limber again.
9) Remove the cap from LN2 fill port and put the hose securely onto it.
10) Double check that the LN2 vent port has been opened and a hose put on it.
11) Slowly open the LN2 supply valve on the storage dewar over the course of about 30 seconds. Observe the exhaust coming from the vent port hose on the magnet. Eventually the valve can be opened all the way. Put insulation on the bare hose parts.
12) When the magnet is full, drops of LN2 will start to come from the vent port hose. The LN2 makes a loud "popping" sound as it hits the floor. Close the valve in stages to ensure the magnet is fully topped off.
13) When the supply valve is fully closed, remove the frozen vent port hose by gently twisting and rocking. Put the vent port cap back on.
14) Remove the insulation from the bare hose parts.
15) Remove the supply hose from the supply port using a careful rocking and twisting motion. Put the supply port cap back on.
16) When the hoses have thawed (about 15 minutes), take the rubber hose out of the pipe and replace the hose and pipe on the pegboard.