BUCHI Cartridge C-670 - Manual (Page 10)

BÜCHI Cartridger TM C-670
8
Now fasten the other end of the tube to the cartridge holder
(see Fig. 4.2).
4.3 Connecting the Cartridger to a
vacuum source
The Cartridger has two connections on the back side (Figure
4.4). The upper connection is for the vacuum. The vacuum
pump should reach a final vacuum of 20mbar and have a
suction output greater than 1m
3
/min. The display panel on
the left side (Figure 4.3) is for easily ascertaining whether a
sufficient vacuum is present. If the display panel is red, either
the vacuum is not sufficient, the Cartridger is not vacuum
sealed or the vacuum valve on the front side of the device is
open.
4.4 Connecting the Cartridger to a
compressed air or gas supply
The lower connection on the rear side of the device is
connected to the compressed air or gas supply. The inlet
pressure should be between 1 bar (15psi) and 2 bar (30 psi)
and should not exceed this range. In-house compressed air
must be free of water and oil in order to prevent contamination
of the stationary phase and to avoid changing the water
content of the stationary phase.
The use of in-house compressed air should be avoided if there
are doubts as to its quality.
All common inert lab gases can be used as an alternative to
compressed air (nitrogen, technical air, argon, helium).
4 Putting into operation
Figure 4.3: Vacuum Indicator
Figure 4.4: Rear view
Figure 4.2: Cartridge holder