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Limas11: Quartz Sample Cell Cleaning,
42/24-10 EN Rev. 9
Step
Action
Sample Cell Cleaning:
7
Wash the sample cell with a warm detergent / water mixture.
Acids, alkalis or solvents can be used as cleansers in case of
severe contamination.
Be sure to follow the appropriate instructions for use and
disposal when using acids, alkalis or solvents.
Do not use hydrofluoric acid (HF) as it can destroy the sample
cell.
8
Rinse the cell very thoroughly with deionized water until the detergent
is completely removed. Finally, rinse the cell with ethanol until all
water is removed.
9
Dry the sample cell with oil- and dust-free air (30-100 liters/hour).
10
Check that the contamination has been removed.
Also clean the elbow fittings and the sample gas line system.
Sample Cell Installation:
11
Place new FFKM75 O rings 7 on the sample cell connection ports.
12
Place the internal parts 8 of the elbow/pivot fittings on the connection
ports and tighten them by hand. Place the elbows 9 on the internal
parts with their ports facing toward the housing back wall and secure
them by hand-tightening the nuts 10.
The threaded connections must never be tightened any more
than hand-tight. Otherwise the connections may not be
securely sealed.
13
Place the sample cell 6 in its holder with the gas ports pointing to the
left wall (as seen from the front / above).
14
Install 2 mounting brackets 4 – making sure that the notches for the
sample cell gas lines also face the left wall – and secure with 4 screws
3.
Connect the sample gas lines to the sample cell.
15
Push the sample gas tubes 2 through the threaded fittings 1 on the
housing back wall.
Make sure the sample gas lines are smooth and straight on
both ends and that there are no kinks.
16
Slide nuts 13, cutting rings 12 and sealing rings 11 on the sample gas
pipes 2.
17
Slide the sample gas tubes 2 up to the stop in the elbow/pivot fittings
5 on the sample cell and high-tighten nuts 13. Hand-tighten the nuts
on fittings 1 on the housing back wall.
The threaded connections must never be tightened any more
than hand-tight. Otherwise the connections may not be
securely sealed.
18
Check the integrity of the analyzer module gas paths (see page 9-2).
Remember the higher seal integrity requirements.
Chapter 9: Inspection and Maintenance
continued
Continued on next page
9-13
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