Servicing The High-Pressure Pump; Figure 14 High-Pressure Pump - Parts - Metrohm 942 Extension Module Vario Manual

5.5 Servicing the high-pressure pump

5.5 Servicing the high-pressure pump
1 Pressure screw, short (6.2744.070)
Fastened to the outlet valve holder.
3 Fastening screw
5 Inlet valve holder
7 Eluent aspiration tubing connector
Consists of a coupling with a pressure screw.
Maintenance interval
32
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NOTE
You can find a video sequence for this task in the Multimedia Guide IC
Maintenance or on the Internet at http://ic-help.metrohm.com/.
Figure 14 High-pressure pump – Parts
The following parts of the high-pressure pump must be serviced at least
once per year:
Inlet valve (6.2824.170)
￭
Outlet valve (6.2824.160)
￭
Piston seal (6.2741.020)
￭
Zirconium oxide piston (6.2824.070)
￭
Maintenance tasks can also be carried out if the following problems occur:
2 Outlet valve holder
4 Pump head
6 Pressure screw, short (6.2744.070)
Fastened to the inlet valve holder.
8 Pressure screw, short (6.2744.070)
Fastened to the pump output.
942 Extension Module Vario ONE/Deg (2.942.1060)
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