Metrohm 872 Extension Module - Manual (Page 37)

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4 Installation
872 Extension Module IC Module
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4.6 High pressure pump
The intelligent and low pulsation high pressure pump pumps the eluent
through the system. It is equipped with a chip on which its technical spec-
ifications and "life history" (operating hours, service data, ... ) are saved.
The purge valve is used for deaerating (see Chapter 4.6.2, page 31) the
high pressure pump.
4.6.1 Capillary connections high pressure pump/purge valve
Note
All of the capillary connections of the high pressure pump and the
purge valve are already installed in the newly delivered instrument.
10 8 9
1
2
3
4
5
6
2
7
2
2 2
11
2
12
2 13
Figure 18 Capillary connections high pressure pump/purge valve
1 Connection capillary
PEEK capillary, connects main piston and
auxiliary piston. 2 PEEK pressure screw, short 6.2744.070
3 Outlet valve holder 4 Pump head 6.2824.110