Maintenance
26
4.2 Reagent tubes filling
4.2.1 Reagent tube replacing
Fig. 9: Installalling the reagent tubes
The reagent tubes are first lifted and then swung to one side, detached diagonally
downwards and emptied.
Remark
The dimensions for filling the glass tubes given in the schematics of chapter
”Reagent tubes filling” should be respected in all cases.
When, for example, there is a rest of quartz wool in the bottom of the glass tube, it
is possible that dust, forming magnesium perchlorate can fall through and block the
fitting below or this can damage the analyser and the infrared cell.
Remark
Before the reagent tubes are fitted, both, the O-rings and the inner ends of the
tubes are lubricated with high vacuum silicon grease.
The components are refitted in reverse order.
NOTICE
The dimensions for filling the glass tubes should be respected in all cases to
secure proper analyzing and to avoid any damages of the device (see chapter
filling quantities). When there is not enough glass wool in the lower end of the
glass tube, it is possible that dust of magnesium perchlorate can fall through and
block the fitting below. This can damage the analyzer and the infrared cell.
Also with the right hand glass tube (moisture trap after the furnace outlet), one
must pay special attention that enough magnesium perchlorate is available.
Otherwise, water vapor can condense on the inside free glass wall before it
reaches the magnesium perchlorate.
NOTICE
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