Metrohm 874 USB Oven Sample Processor - Manual (Page 26)

3.6 Mounting the drying flasks ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
18 ￭￭￭￭￭￭￭￭ 874 Oven Sample Processor
3.6 Mounting the drying flasks
Two drying flasks with desiccant are integrated into the gas flow in order
to dry the gas that is conveyed. Dust (e.g. from the desiccant) must be
prevented from finding its way into the sample vessel.
1
2
3
6.1608.050
6.1821.040
6.1602.145
6.2811.000
Figure 9 Preparing the drying flasks
Prepare both drying flasks as follows:
1 Fill both 6.1608.050 drying flasks with 6.2811.000 molecular
sieve.
2 Screw one 6.1821.040 filter tube into each of the 6.1602.145
drying flask covers from below. Tighten the filter tubes well by
hand.
3 Screw the two drying flask covers with the filter tubes onto the dry-
ing flasks. Tighten the covers well by hand.
Note
If the drying flask covers or the filter tubes are not sufficiently
tightly screwed on, then this will prevent a precise, regular flow of
gas. An error message displaying a wrong gas flow rate appears as
a rule when there are leaks in the threaded connections.