Xcalibur II manual

MAINTENANCE INSTRUCTIONS

WARNING

Ensure that the X-ray tube is correctly mounted. Incorrect mounting may result in exposure of personnel to X-ray radiation. Red plastic spacers may need to be removed to ensure perfect fit of X-ray tube.

9. From the front of the Xcalibur insert the X-ray tube into the tube shield and secure.

NOTE

X-ray tube must be inserted the correct way up. See figure 9.3.1

Water in

TOP

Water out

Water in

TOP

Water out

RT FE

Mo

SEIF

AE

G

BOTTOM

Mount Seiffert and Philips X-ray tubes so that the tube label is upside down, as shown above, with the cooling water flowing in through the top and out at the bottom.

BOTTOM

Mount older tubes manufactured by AEG as shown in the diagram above

Figure 9.3.1 Position of the X-ray source

10. Secure temperature sensor to base of X-ray tube

11. Replace the front plate of the Enhance by tightening the two grub screws holding it to the optic housing

12. Reconnect water supply to back of X-ray tube shield

13. Switch on water and power to Xcalibur and chiller units.

14. Align X-ray optics as described below.

9.4 Changing the X-ray Tube of Enhance ULTRA

Task Time:

When:

30 mins

Sealed source X-ray tubes have a limited useful lifetime. Operation of a 3 kW tube at typical output of 2 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.

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MAINTENANCE INSTRUCTIONS

Tools:

Set of Allen keys

Set of flat-headed screwdrivers

Water receptacle (e.g. Bucket)

Procedure

1. Turn off all power and water to the Xcalibur system, KMW200CCD and KMW3000C chiller units

2. Leave for at least 20 minutes to ensure that the X-ray tube is not hot (test temperature before proceeding).

CAUTION

Have a receptacle ready to receive water from the pipes and X-ray tube shield.

3. Disconnect water pipes from back of Enhance Ultra X-ray tube shield (These are attached with quick release connectors).

4. Remove the Enhance ULTRA front face panel. Using a 3mm Allen key completely undo the screw 1 (see Figure 9.4.1) and lift off the front face panel.

5. Unscrew the temperature sensor from the front plate (metal base, with label) of the X-ray tube.

WARNING

Do not touch the Beryllium windows in the X-ray tube. Beryllium is a potentially toxic material.

6. Release the two screws holding the X-ray tube in place and withdraw the X-ray tube from the Xray shield. Do this by holding the front plate (metal base, with label) and pulling towards the front of the Enhance ULTRA. Ensure that the X-ray tube is held level and withdraw parallel to the X-ray shield.

7. For disposal of used X-ray tubes see the DISPOSAL chapter of this manual.

WARNING

Do not touch the Beryllium windows in the X-ray tube. Beryllium is a potentially toxic material.

8. Replace the x-ray tube with an identical specification Cu X-ray tube. Holding by its metal base, remove the new X-ray tube from its protective box.

WARNING

Ensure that the X-ray tube is correctly mounted. Incorrect mounting may result in exposure of personnel to X-ray radiation. Red plastic spacers may need to be removed to ensure perfect fit of X-ray tube.

9. From the front of the Enhance ULTRA insert the X-ray tube into the tube shield and secure with two screws.

NOTE

X-ray tube must be inserted the correct way up. See figure 9.3.1

10. Secure temperature sensor to base of X-ray tube

11. Remount the thermocouple and the Enhance ULTRA front face panel and secure in place using a 3mm Allen key and the screw 1 (see Figure 9.10.1).

Version 1.4 Xcalibur_Manual_v1.4

Page 118

Xcalibur

USER MANUAL