Early Maintenance Feedback - Agilent Technologies 1220 Infinity II LC User Manual

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Introduction

Early Maintenance Feedback

Early Maintenance Feedback
EMF counters for the pump
The user-settable EMF limits for the EMF counters enable the early
maintenance feedback to be adapted to specific user requirements. The wear
of pump components is dependent on the analytical conditions. Therefore, the
definition of the maximum limits needs to be determined based on the specific
operating conditions of the instrument.
The Agilent 1220 Infinity II LC pump provides a series of EMF counters for the
pump head. Each counter increments with pump use, and can be assigned a
maximum limit that 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 pump provides the following EMF counters:
Pump liquimeter
The pump liquimeter displays the total volume of solvent pumped by the pump
head since the last reset of the counters. The pump liquimeter can be assigned
an EMF (maximum) limit. When the limit is exceeded, the EMF flag in the user
interface is displayed.
Seal wear counters
The seal wear counters display a value derived from pressure and flow (both
contribute to seal wear). The values increment with pump usage until the
counters are reset after seal maintenance. Both seal wear counters can be
assigned an EMF (maximum) limit. When the limit is exceeded, the EMF flag in
the user interface is displayed.
EMF counters for the autosampler
The user-settable EMF limits for the EMF counters enable the early
maintenance feedback to be adapted to specific user requirements. The wear
of autosampler components is dependent on the analytical conditions.
12 1220 Infinity II LC System User Manual