Agilent Technologies G1313A, Reference Manual

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Introduction to the Autosampler
Early Maintenance Feedback (EMF)
Early Maintenance Feedback (EMF)
Maintenance requires the exchange of components in the flow path which
are subject to mechanical wear or stress. Ideally, the frequency at which
components are exchanged should be based on the intensity of usage of the
instrument and the analytical conditions, and not on a predefined time
interval. The early maintenance feedback (EMF) feature monitors the
usage of specific components in the instrument, and provides feedback
when the user-setable limits have been exceeded. The visual feedback in
the user interface provides an indication that maintenance procedures
should be scheduled.
EMF Counters
The autosamplers provides two EMF counters. Each counter increments
with autosamplers use, and can be assigned a maximum limit which
provides visual feedback in the user interface when the limit is exceeded.
Each counter can be reset to zero after maintenance has been done. The
autosamplers provides the following EMF counters:
Injection valve
counter
This counter display the total number of switches of the
injection valve since the last reset of the counter.
Needle
Movements
Counter
This counter displays the total number of movements of
the needle into the seat since the last reset of the
counter.
Using the EMF Counters
The user-setable EMF limits for the EMF counters enable the early
maintenance feedback to be adapted to specific user requirements. The
wear of autosamplers components is dependent on the analytical
conditions, therefore, the definition of the maximum limits need to be
determined based on the specific operating conditions of the instrument.