28
Maintenance Procedures
Changing the Windows
This section is only to be use, if any of the quartz
windows are broken and need replacing.
Before leaving Linkam Scientific Instrument Ltd.,
each stage is calibrated and checked for parallel-
ism of the Lid and Base windows.
When changing any windows, it is most important
that the surfaces are clean. Otherwise the paral-
lelism of the windows and the gap settings will be
affected.
Refer to pages 8 and 37 of this manual for the full
description and part number of the tools and ac-
cessories needed to replace the windows.
External Window Replacement
Using the External Window Clamp Tool (1),
unscrew the External Window Ring (2) and re-
move the 18mm diameter quartz window (3). Do
the reverse to replace the stage with a new quartz
window. Do not over tighten as this could dam-
age the quartz window.
Base Window Replacement
If you have the CSS-450 purge system, you will
have a slightly different window clamp tool, see
page 33.
When the Base window needs to be replaced, it
should be reassembled as follow:
1. Using the Base Window Carrier Tool (4) to
give leverage use the 55mm Window Clamp
Tool (5) to unscrew the Window Clamping
Ring (6) that clamps the 55mm
diameter
Quartz Base Window (7) in place.
2. With the help of the 55mm Window Sucker
Tool (8) provided, remove the old quartz win-
dow. Then clean the recess where the window
sits.
3. Place a new quartz window into position and
make sure that it drops into the bottom of the
recess.
4. Replace the clamping ring and screw it down
until it just touches the window.
5. Tighten the ring with the tool.
Note: The window clamping ring has a rubber
seal on its bottom to secure the quartz window in
place and to give it good thermal contact with the
heater. Do not over tighten the clamping ring, as
it could brake the quartz window. Hand tight is
sufficient.
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