Metrohm 881 Compact IC pro – Anion - Manual (Page 80)

5.5 High pressure pump
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881 Compact IC pro – Anion
1
2
Figure 33 Inserting the piston seal into the pump head
4 Replacing the piston cartridge
Screw the assembled piston cartridge back into the pump head and
tighten, first by hand, then additionally by approx. 15° with a
wrench.
Cleaning the inlet valve and outlet valve
1 Removing valves
￭ Unscrew the connection capillary for the auxiliary piston (14-1)
from the outlet valve holder.
￭ Unscrew the holders for the inlet and outlet valves and remove
the valves (34-3) and (34-2).