Early Maintenance Feedback (Emf) - Agilent Technologies G1157A User Manual

3 Maintenance, Repair, and Troubleshooting

Early Maintenance Feedback (EMF)

Depending on the application the valve will perform many thousands of
actuations without any visible signs of wear. In order to minimize downtime
the Agilent ChemStation offers Early Maintenance Feedback (EMF) for the
Agilent 1200 Series valves. EMF monitors the number of switches of the
Agilent 1200 Series valves, and provides feedback when a user-settable limit is
exceeded. The visual feedback in the graphical user interface provides an
indication, that the exchange of the stator face and/or the rotor seal should be
scheduled.
Figure 12
In the Diagnostics view you can define, after how many valve switches the
stator face and/or the rotor seal should be replaced. The setting for the EMF
limit depends on analytical conditions, e.g. use of buffer solutions. Hence the
setting should be optimized over one or two maintenance cycles.
Setting the EMF limit
1 Switch to the Diagnostics View of the ChemStation.
2 Click on the EMF icon. The EMF Info Pad
3 Select a valve on the dropdown list of the EMF Info Pad.
4 Enter the EMF limit and click on Send Changes.
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Early Maintenance Feedback (EMF)
panel of the user interface.
Maintenance and Repair
(Figure 12) will appear on the right
Agilent 1200 Series Valves