AO2000
CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
295
Aluminum sample cell cleaning
2
1
1
2
CAUTION
The sample cell is hot (approx. 55 °C)! Allow the sample cell to cool after
the power supply has been turned off (approx. 30 minutes).
Preparation for sample cell removal:
1
Disconnect the supply of sample gas to the analyzer module! Switch off
the gas analyzer power supply!
2
Open the wall housing door or the 19-inch housing cover.
Sample cell removal:
3
Loosen the sample gas tubing/pipe from the sample cell ports and
housing wall and pull them from the housing.
When removing the sample gas pipes make sure no contaminants con-
tained in the pipes fall into the housing.
The sample gas tubing/pipes removed should not be reused since they
are contaminated; follow the appropriate rules for disposal.
4
Loosen 4 screws
1
(socket-head, wrench opening 3 mm) and remove 2
mounting brackets
2
.
5
Remove the sample cell from its housing.
Sample cell cleaning:
6
Clean the sample cell with a warm detergent/water mixture.
Do not use other cleaners as they can damage the sample cell.
7
Thoroughly rinse the sample cell with deionized water and then with
ethanol.
8
Dry the sample cell with oil- and dust-free air (30 to 100 l/h.).
9
Check that the contamination has been removed.
Clean the entire sample gas line system in the same way!
Sample cell installation:
10
Place the sample cell in its housing. The index pin should be on the side
of the sample cell that is toward the beam splitter. Turn the sample cell
in its housing until the index pin engages in the hole in the housing.
11
Install the 2 mounting brackets
2
and secure them with the 4 screws
1
.
12
Install the new sample gas tubing or pipes on the sample cell ports and
on the module’s rear wall.
13
Check the integrity of the analyzer module gas paths (see page 268).
