Mercury300

If unscrew the aluminum tube from the stack support. very careful, do not over screw. It may damage the aluminum screw. It is very hard to redo since the material is to soft.

Note: This part has been replaced by a old type (from VXR300, no gradient connector, no yellow capacitor). It works for all Varian NMRs.

Upstack	The left connection is for eject air. The middle one is for spin air and right connection is for bearing air.
	The spin rate sensor: There are four wires. One black/white wire is connect ground --out side of the shielding wire. black-red-white are connected to the coupler. Some old type do not have the yellow capacitor. It still works.

	There are two diods to connect the gradient. On the top of the stack, there is a three-pin connector.

	Bottom of the stack. Two pin connectors are gradient connector.

	Top view. Inside there are four small holes for spin air. clean is necessary if no spin.

Upstack