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MAINTENANCE INSTRUCTIONS
8.3 Changing the X-ray Tube of Enhance (Vertical X-ray Tubes)
Task Time:
30 minutes
When:
Sealed source X-ray tubes have a limited useful lifetime. Operation of a 3 kW Mo
tube at typical output of 2 kW, and a 2.2kW Cu tube at 1.5 kW, will normally
provide 10,000 hours of use (actual values may vary, see third party manual).
Note: X-ray tubes also have a limited shelf life.
Who:
Agilent authorised operator, trained on radiation safety
Tools:
Set of Allen keys
Set of flat-headed screwdrivers
Water receptacle (e.g. Bucket)
WARNING
Do not touch the Beryllium windows in the X-ray tube. Beryllium is a potentially
toxic material.
CAUTION
Use only ceramic X-ray tubes not glass X-ray tubes
Remove all packaging material and red plugs from water openings before fitting
X-ray tube must be inserted in the correct orientation with the Agilent Technologies logo
upside down.
Procedure
1. Switch off the power to the X-ray tube to be changed.
2. Turn off the KMW3000C chiller to stop water circulating.
3. Leave for at least 20 minutes to ensure that the X-ray tube is not hot (test temperature before
proceeding).
4. Switch off and remove any cryogenic device mounted on the diffractometer.
5. Remove the plate for mounting cryogenic devices (3x M8 screws to be removed from top of
attachments tower).
6. Unscrew (one screw at the front and the back) the end cap from the top of the Enhance and
remove (this may also need the loosening of the conical cover at the base end of the
collimator for the Cu source) and lay to one side along with the integrally mounted thermal
sensor.
7. Unscrew and slide out the X-ray tube in an upwards direction. A little water inside the end of
the X-ray tube plate will drip out and should be cleaned up, but otherwise all water in the
system will be retained inside the pipes.
8. Make sure the two o-rings remain in their grooves at the top of the tube shield.
Xcalibur/Gemini
USER MANUAL
Version 2.4
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