Metrohm 930 Compact IC Flex ChS Manual page 64

5.6 Servicing the high-pressure pump
Recommended pro-
cedure
Accessories
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56
We recommend the following procedure for the maintenance of the
pump head:
1. Service the inlet valve and the outlet valve.
2. Remove the pump head.
3. Service both pistons, one after the other.
a. Remove piston.
b. Dismantle the piston.
c. Replace the piston seal.
d. Replace the zirconium oxide piston.
e. Assemble the piston.
f. Insert the piston.
4. Reinstall the pump head.
You can find brief video sequences on the following maintenance steps on
the Internet at http://ic-help.metrohm.com/.
Servicing the outlet valve and inlet valve
For this step, you need the following accessories:
You can find these parts in the accessory kit: Vario/Flex Basic
(6.5000.000).
Adjustable wrench (6.2621.000)
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930 Compact IC Flex ChS (2.930.1200)