11 Maintenance
D52IB001EN-G
69
11.3.3 Replacing the Window Foil
A Kapton foil with 50 µm thickness is used to cover
the X-ray window in the housing. To seal this win-
dow the Kapton foil is pressed onto an O-ring with
two clamping pieces.
To mount or exchange the window foil, proceed as
follows:
1. Unscrew the 20 screws that fix the clamping
pieces to the housing of the instrument.
2. Remove the clamping pieces from the instru-
ment.
3. Remove the used foil.
4. Remove the O-ring and use a suitable solvent,
e.g. alcohol to clean both the O-ring and the
groove.
5. Slightly coat the O-ring with vacuum grease and
mount it again in the groove.
6. Place the window foil over the nipples that hold
the foil in place.
Make sure the holes for the screws in the foil are
in the correct places over the holes for the
screws of the chamber.
7. Place the clamping pieces back on the chamber.
8. Tighten the 20 screws beginning with the upper-
most four.
11.3.4 Replacing the O-rings
Commercially available O-rings made of Viton are
used.
While detaching the O-ring, make sure that the seal-
ing surfaces remain undamaged.
Before fitting the new O-rings, clean the sealing sur-
faces with an appropriate solvent (e.g. alcohol) and
slightly coat them using vacuum grease.
CAUTION
• Check and replace the window foil regularly.
• Once the foil of the radiation window is leaky
or foggy, it has to be replaced. A set of foils is
contained in the accessory box.
Summary of Contents for TTK 600
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Page 74: ...Appendix B Sample Chamber Dimensions 74 D52IB001EN G Appendix B Sample Chamber Dimensions ...
Page 75: ...Appendix C Declaration of Conformity D52IB001EN G 75 Appendix C Declaration of Conformity ...
Page 77: ...Appendix D Spare Parts and Accessories D52IB001EN G 77 176383 COOLING MODE SWITCHING VALVE ...
