Agilent Technologies 1220 Infinity II LC User Manual page 13

1
Introduction
Early Maintenance Feedback
Therefore, the definition of the maximum limits need to be determined based
on the specific operating conditions of the instrument.
The autosampler provides two EMF counters. Each counter increments with
autosampler 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 autosampler 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.
EMF counters for the variable wavelength detector
The user-settable EMF limits for the EMF counter enables the early
maintenance feedback to be adapted to specific user requirements. The useful
lamp burn time is dependent on the requirements for the analysis (high or low
sensitivity analysis, wavelength, and so on). Therefore, the definition of the
maximum limits need to be determined based on the specific operating
conditions of the instrument.
The detector module provides a EMF counter for the lamp. The counter
increments with lamp use, and can be assigned a maximum limit which
provides visual feedback in the user interface when the limit is exceeded. The
counter can be reset to zero after the lamp is exchanged. The detector provides
the following EMF counters:
Deuterium lamp on-time
This counter shows the total burn time of the deuterium lamp in hours.
1220 Infinity II LC System User Manual 13