Metrohm 872 Extension Module - Manual (Page 38)

4.6 High pressure pump
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872 Extension Module IC Module
5 Fastening screws
For fastening the pump head. 6 Inlet valve holder
7 Pump head input capillary
PEEK capillary at the input of the pump
head. 8 Pressure screw
For connecting a PEEK capillary to the cou-
pling (18-
9 ).
9 Coupling
For the connection of the eluent path at the
input of the high pressure pump. Can be
ordered together with the pressure screw
(18-
8 ) under the number 6.2744.230.
10 Deaerating capillary
For aspirating the eluent when deaerating
the high pressure pump (see Chapter 4.6.2,
page 31).
11 Purge valve
For deaerating the high pressure pump.
With rotary knob in the center and pressure
sensor.
12 Connection capillary
For connecting the inline filter (see Chapter
4.7, page 33)
13 Connection capillary
Connects the output of the pump head with
the purge valve.
Note
The eluent aspiration tubing is already installed in the newly delivered
instrument. The following installation instructions need not be carried
out at the time of initial installation.
Connecting inlet to the high pressure pump
5
1 2 3 4
Figure 19 High pressure pump – Connect inlet
1 Pressure screw
For connecting the coupling (19-
2 ) to the
pump head input capillary (18- 7 ).
Can be ordered together with the coupling
under the number 6.2744.230.
2 Coupling 6.2744.230
For connecting the eluent aspiration tubing
(19-
4 ) to the input of the high pressure
pump.