Other Information 9-3
Table 19: Time Quality and APP-601 Action
APP-601 Loss
Sync LED
Status
APP-601 Loss Sync
Relay Status (coil)
Normal Operation
Clock Locked
9.2 Recommended Maintenance and Calibration
APP Engineering recommends a combination performance-based and time-based maintenance.
9.2.1 Performance-based Maintenance
APP recommends that you complete performance-based maintenance by utilizing the Auto-Polling feature
in ClearView. The auto-polling process retrieves the latest diagnostic or status file for each APP Recorder,
(see Clearview Manual for more on setting up Auto-Polling). The following procedure explains how to
complete the minimum recommended performance-based maintenance procedure.
To Complete the Minimum Recommended Performance-based Maintenance Procedure
1. In the APP ClearView program running on your master station computer, set the APP ClearView
Configuration to auto-poll all the APP Recorders once per day. This retrieves a Fault Summary
Report and the SER dates.
2. After auto-polling, review the Auto-Transfer Notification Report to ensure that the last received
date is correct and that each APP Recorder is online.
3. The auto-polling process retrieves the latest diagnostic or status file for each APP Recorder. The
Alarm box in the upper right hand corner of the APP ClearView window displays alarms for
APP Recorder. Alarms appear as a red background with the text Alarms On. If an APP Recorder
has an alarm, double-click the Alarm box to see which APP Recorder is in alarm.
4. During normal use of the APP ClearView analysis software, review the analog and digital data to
ensure that there is an acceptable measurement of the power system input values.
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