86 Advanced Operation
7 Early Maintenance Feedback
What is Early Maintenance Feedback?
Use the Early Maintenance Feedback (EMF) features of the
HS to schedule a reminder to replace a part before it can
impact an analysis. EMF provides an alert on the HS display
when a consumable item reaches its user- defined lifespan.
The HS tracks lifespan using a counter associated with the
consumable item. When the counter reaches a user- defined
threshold, the HS lights the Service Due LED and enters a
message in the Maintenance log.
Table 15 below lists the consumable items tracked by the
HS, as well as the type of event the HS uses to track the
consumable item. For example, the HS tracks transfer line
usage by counting injection cycles. Note that tray counters
appear on the HS display only if a 111 vial tray is installed.
Agilent’s Instrument Utilities software may provide
additional EMF features.
Table 15 7697A Counters
Item Counter
Transfer line Injection cycles
Probe Injection cycles
Vent valve Injection cycles
6-Port rotor Injection cycles
6-Port valve Injection cycles
Sample loop Injection cycles
Vent tubing Injection cycles
Gripper pads Tray gripper moves
Tray calib Instrument uptime
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