Micromeritics AccuPyc 1330, Руководство оператора

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Maintenance
Greasing the Chamber Cap O-Ring
The cell chamber cap contains an O-ring that requires routine maintenance be-
cause it is so often exposed. The chamber cap O-ring should be greased at
the beginning of each period of use.
Rubber gloves should be worn to prevent contamination of the grease
with oil from your fingertips. Carefully apply a thin layer of grease;
both too much and too little grease can cause a problem. Too much
grease may alter cell volume. Too little grease results in an imperfect
seal.
1. Remove the chamber cap by turning it counterclockwise then lifting off.
2. Wipe off the old grease using lint-free tissue.
3. Using your fingertips, apply a thin layer of Dow Corning high vacuum
grease (or equivalent) to the greasing disk.
4. Insert the greasing disk into the chamber cap and turn slightly to apply a
very light coating of grease to the O-ring.
Apply a VERY LIGHT coating of grease to the O-ring. There should
be no visible ridges of grease; excess grease may alter analysis results.
Figure 5-1. Greasing Chamber Cap O-Ring
5. Wipe the mating surface in the cell chamber with lint-free tissue.
6. Replace the chamber cap.
Greasing Disk
O-ring
Chamber Cap
Maintenance AccuPyc 1330
5-14 September 1996