Metrohm 940 Professional IC Vario TWO, Руководство пользователя

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5.8 Servicing the high-pressure pump
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940 Professional IC Vario TWO (2.940.2100)
1 Release the coupling from the pressure screw and seal it with a stop-
per.
2 Unscrew and remove the pressure screw on the pump head's outlet
(14- 8 ) .
3 Loosen and remove the four fastening screws (14- 3 ) using the hex
key.
4 Remove the pump head (14- 4 ) .
Servicing the piston
Carry out the following work on both pistons in turn.
Servicing a piston consists of the following tasks:
1. Replace the piston seal.
2. Clean or replace the zirconium oxide piston.
3. Reinstall the piston.