Metrohm 920 Absorber Module - Manual (Page 73)

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4 Installation
920 Absorber Module
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￭ Push the pressure screw over the end of the capillary far enough
that approx. 4 mm of the capillary is exposed.
￭ Screw the pressure screw in place at port 4 of the 6-port valve.
4 Connecting port 5
￭ Push the pressure screw over the loose end of the capillary con-
nected to the outlet of the Metrosep I Trap 1 – 100/4.0 (17-17)
far enough that approx. 4 mm of the capillary is exposed.
￭ Screw the pressure screw in place at port 5 of the 6-port valve.
5 Connecting the sample loop
￭ Push the pressure screws far enough over both ends of the sam-
ple loop that approx. 4 mm of the loop is exposed.
￭ Tighten the one pressure screw at port 3.
￭ Tighten the second pressure screw at port 6.
4.6.2 Mode of operation of the 6-port valve
A sample loop is installed on the 6-port valve; it is used for measuring the
sample amount before it is transferred to the analyzer.
Ports
As its name implies, the 6-port valve has six ports.
Figure 19 6-port valve – Ports
1 Port 1
Connected to the 10-port valve. Used as the
inlet for the sample and the standard solu-
tion and check standard. 2 Port 2
For connecting the capillary to the waste
container.