SMS alignment off by about 1/2 cm causing sample move failure. Re-aligned SMS.
| Ve | Re | Rt | |
| CP1:AT.HAND.GP | 2.0 | 30.4 | 90.0 |
| CP1:CLEAR.HAND.GP | 23.0 | 0.0 | 90.0 |
| HAND.GP | 16.5 | 19.9 | 90.1 |
| CP31:RACK P1 | 19.5 | 4.7 | 76.6 |
| CP31:RACK P2 | 19.5 | 4.7 | 43.7 |
| CP31:RACK P3 | 19.5 | 27.2 | 49.7 |
| CP191:MAGNET | 13.4 | 29.6 | 259.3 |
| CP191:CLEAR | 34.0 | 0.0 | 259.3 |
System had several issues including bad Digital PS, inconsistent shims and intermittent RF output. Believe the shim issues were due to bad digital PS. Still having intermittent RF issues. Also, the CPU board was bricked. I was able to restore it to defaults using procedure below. Attach a terminal connection to the Acq CPU Diag…
Mercury 400 Alarm Found that the PS204, which is a +12VDC and +5VDC power supply had a capacitor that was bulging. Tested the +12VDC and observed the following: When OK 12.4 VDC 0.1 VAC When Beeping 11.8 VDC 0.8 VAC At Startup 10.5 VDC 1.5V AC Ordered replacement power supply from Mouser Electronics. Part Number: HCC512-A+G…
Water Damage NMR had a failure with the air dryer system that caused water to enter the airlines of system all the way thru the shim coil. Had to replace the following: All system air solenoids Shim Coil Also had to clean the upper barrel for proper spinning. Shim Coil was replaced with an Oxford…
Completed Install of SMS Robot and SYS-V Controller. Customer had table, cables and interface cards. Vertical Reach Rotation CP1:AT.HAND.GP 1.8 30.3 89.9 CP1:CLEAR.HAND.GP 24.8 0.0 89.9 HAND.GP 16.2 19.9 89.8 CP31:RACK P1 19.5 4.7 76.3 CP31:RACK P2 19.5 4.6 43.2 CP31:RACK P3 19.5 27.2 49.3 CP191:MAGNET 19.3 21.9 272.0 CP191:CLEAR 34.0 0.0 272.0
Lineshape does not meet spec. Needs 3D Gradient shimming. Found that the upper barrel was not centered in magnet field. Re-centered upper barrel. Performed 3D gradient shimming successfully. Obtained lineshape spec after RT shimming. Performed H1 and C13 performance specs, all passed. Default shims and power level vales saved. New gradient map saved.
Filled three NMR magnets using 100L dewer. Magnet Start End Total Oxford 500 28% 100% 72% 95L 45L 50L 8:20 8:40 20 mins Oxford 300 Unknown 100% NA 45L 10L 35L 8:50 9:05 15 mins Bruker 500 81% 91% 10% 10L 0L 10L 9:15 9:20 5 mins