12-22
Maintenance
Use the four screws with red o-rings that were removed in Step 5 to secure the
bellows to the chamber top plate.
14. Re-attach the lower plate from the pressure relief valve assembly using the
four nuts with attached star washers, as shown in Step 4 above. Attach the
upper plate with the four thumbnuts, as shown in Step 3 above. Re-attach the
handle. Connect the chamber to the Analyzer Control Unit and manually
open and close the chamber a few times to verify that there are no leaks.
8100-103 20 cm Survey Chamber Maintenance
Gasket Replacement
The 20 cm Survey Chamber uses a series of three gaskets to seal the chamber
against air leaks between the soil collar and the chamber. The first gasket is a
black neoprene gasket (p/n 224-07606) that is located on the bottom of the
moveable part of the chamber; in most cases this gasket will not need to be
replaced unless it is inadvertently damaged. The other two gaskets are located on
the underside of the chamber, beneath the metal flange that envelopes the soil
collar. These two gaskets, and in particular, the white foam gasket, may need to be
changed with some regularity.
Soil Collar Gasket
Foam Seal Gasket
The black rubber gasket is referred to as the Soil Collar Gasket; four spares are
included in the spares kit under p/n 6581-108. The white foam gaskets are referred
to as Foam Seal Gaskets; a package of 20 is included in the 8100-632 gasket kit, or
individually under p/n 6581-107.
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