12-16
Maintenance
bow. The screws should not be fully tightened, as this will distort the gasket -
tighten until the gasket begins to deform, and then back off slightly.
Replacing the Bellows on the 10 cm Survey Chamber
If the bellows on the Survey Chamber is punctured or is otherwise damaged and
develops a leak, it will not operate properly. If the chamber fails to raise or lower
when the bellows pump is operating, the bellows and/or the Bev-a-line tubing on
the bellows air path may be damaged. Check the Bev-a-line tubing first to see if it
has developed a leak, and replace if necessary. If you have determined that the
bellows is damaged, you can replace it with the Bellows Kit (p/n 8100-623), sold
separately.
Follow these steps to replace the Survey Chamber bellows:
1. Remove the Survey Chamber hoses and chamber connector from the Analyzer
Control Unit side panel.
2. Remove the handle from the chamber. When the handle is in a horizontal
position, it can be removed by pulling out on both sides of the handle.
3. Remove the four thumbnuts from the top plate of the pressure relief valve
assembly. The top plate and attached hose can stay attached to the manifold;
it will hang along side the chamber while you complete the disassembly.
Remove these 4
thumbnuts
You should be able
to remove the nuts
with your fingers; if
not, gently loosen
with a pair of pliers.
It is not necessary
to remove the black
hose.
4. Remove the four standoffs from the lower plate of the pressure relief valve
assembly with an open end wrench.
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