Metrohm 930 Compact IC Flex Oven/SeS/Deg User Manual Page 69

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5 Operation and maintenance
930 Compact IC Flex Oven/SeS/Deg (2.930.2460)
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61
5.8 Servicing the high-pressure pump
Figure 16 High-pressure pump – parts
1
Pressure screw, short (6.2744.070)
Fastened to the outlet valve holder.
2
Outlet valve holder
3
Fastening screw
4
Pump head
5
Inlet valve holder
6
Pressure screw, short (6.2744.070)
Fastened to the inlet valve holder.
7
Eluent aspiration tubing connector
Consists of a coupling with a pressure
screw.
8
Pressure screw, short (6.2744.070)
Fastened to the pump output.
Maintenance interval The following parts of the high-pressure pump have to 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:
Unstable baseline (pulsations, flow fluctuations)
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