Metrohm 850 Professional IC Cation - LP-Gradient - Manual (Page 50)

3.11 High pressure pump
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850 Professional IC Cation – LP Gradient
1
2
3
Figure 21 Mixing coil for low pressure gradients connection
1 Inlet valve holder 2 PEEK pressure screw, short 6.2744.070
3 Mixing coil for low pressure gradients
6.2758.020
3.11.3 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 41):
Deaerating the high pressure pump
The instrument must be connected to the PC and switched on to deaerate
the high pressure pump.