Bruker RS - Page 6

6
ZTKS0156 / Z31820 / Rev.: 03
Table of Contents
4.3.1.2 Mounting the Getter Container ............................................................................... 43
4.3.1.3 Checking the Feedthrough Plate ............................................................................ 44
4.3.1.4 Assembling the Nitrogen Tube ............................................................................... 44
4.3.1.5 Assembling the RT Tube ........................................................................................ 46
4.3.1.6 Checking and Fitting the Drop-off Plate.................................................................. 49
4.3.2 Evacuating the Cryostat ......................................................................................... 50
4.3.2.1 Mounting the Vacuum Valve................................................................................... 50
4.3.2.2 Mounting the Vacuum Valve at Evacuated Cryostat .............................................. 51
4.3.2.3 Generating the Vacuum.......................................................................................... 52
4.3.2.4 Rebuilding the Vacuum .......................................................................................... 53
4.3.2.5 Removing the Vacuum Valve ................................................................................. 53
4.3.3 Mounting the Cryogenic Refrigerator Parts ............................................................ 54
4.3.3.1 Mounting the Cold Head......................................................................................... 54
4.3.3.2 Mounting the Rotary Valve Column........................................................................ 56
4.3.3.3 Mounting the Rotary Valve and Flex Lines............................................................. 61
4.3.3.4 Mounting the Compressor ...................................................................................... 67
4.3.3.5 Mounting the Helium Level Sensor......................................................................... 69
4.3.3.6 Mounting the Helium Flow System ......................................................................... 70
4.3.3.7 Mounting the Temperature Control......................................................................... 71
4.3.4 Cooling down from 300 K to 80 K........................................................................... 73
4.3.5 Cooling down to 4.2 K ............................................................................................ 77
5 Operation......................................................................................................79
5.1 Safety ..................................................................................................................... 79
5.2 Energizing............................................................................................................... 80
5.2.1 Inserting the Current Lead...................................................................................... 80
5.2.2 Energizing Procedure ............................................................................................. 81
5.2.3 Cycling Procedure .................................................................................................. 82
5.2.4 Shimming Procedure .............................................................................................. 83
5.2.5 Removing the Current Lead ................................................................................... 84
5.2.6 Complete Energizing .............................................................................................. 84
5.3 Set into Operation................................................................................................... 85
6 Troubleshooting ..........................................................................................87
6.1 Safety ..................................................................................................................... 87
6.2 Problem .................................................................................................................. 88
6.2.1 During Transportation............................................................................................. 88
6.2.2 During Assembling ................................................................................................. 88
6.2.3 During Cool Down .................................................................................................. 90
6.2.4 During Energizing and Shimming ........................................................................... 94
6.2.5 During Operation of the Magnet Stand................................................................... 96
6.2.6 During Standard Operation..................................................................................... 98
6.2.7 During De-energizing and Warming up ................................................................ 101
6.2.8 During Operation of the Cryogenic Refrigerator................................................... 102
6.3 Troubleshooting Work .......................................................................................... 107