1290 Infinity II High-Speed Pumps User Manual 261
11 Hardware Information
Early Maintenance Feedback
Early Maintenance Feedback
Maintenance requires the exchange of components that are subject to wear or
stress. Ideally, the frequency at which components are exchanged should be
based on the intensity of use of the module and the analytical conditions, and not
on a predefined time interval. The early maintenance feedback (EMF) feature
monitors the use of specific components in the instrument, and provides
feedback when the user-selectable limits have been exceeded. The visual
feedback in the user interface provides an indication that maintenance
procedures should be scheduled.
EMF Counters
EMF counters increment with use and can be assigned a maximum limit which
provides visual feedback in the user interface when the limit is exceeded. Some
counters can be reset to zero after the required maintenance procedure.
Using the EMF Counters
The user-settable EMF limits for the EMF Counters enable the early maintenance
feedback to be adapted to specific user requirements. The useful maintenance
cycle is dependent on the requirements for use. Therefore, the definition of the
maximum limits need to be determined based on the specific operating
conditions of the instrument.
Setting the EMF Limits
The setting of the EMF limits must be optimized over one or two maintenance
cycles. Initially the default EMF limits should be set. When instrument
performance indicates maintenance is necessary, take note of the values
displayed by the EMF counters. Enter these values (or values slightly less than the
displayed values) as EMF limits, and then reset the EMF counters to zero. The
next time the EMF counters exceed the new EMF limits, the EMF flag will be
displayed, providing a reminder that maintenance needs to be scheduled.
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