Metrohm 872 Extension Module IC Pump - Manual (Page 40)

4.6 High pressure pump
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872 Extension Module IC Pump
4.6.2 Deaerating the high pressure pump
The high pressure pump will only operate perfectly if the pump head con-
tains no more air bubbles. Therefore it must be deaerated during initial
start-up and after every change of eluent.
Caution
The high pressure pump must not be deaerated before the initial start-
up .
Deaerate the high pressure pump as follows (see Figure 22, page 33):