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    User name spiegel

    Log entry time 15:18:55 on July 25, 2006

    Entry number 175179

    This entry is a followup to: 175064

    keyword=Q1 RIGHT Saclay TC156 failure

    During Hall A controlled access on 07-24-2006. Began troubleshoot and repair of Saclay rack TC156 failure. Found Pyromat 120 temerature controller (Lead Flag heater) cycling, causing recurrent TC156 interlock alarms. Display push buttons were unresponsive to input and LED display was flashing inconsistantly. Removed and replaced with new Micromega (upgrade) series CN77533 temperature (RTD) controller. Setup unit configuration and alarm set points. Verified TC156 alarms cleared. Reset Saclay rack (Relay ~ manual reset) and Danfysik power supply interlocks. Placed Q1 magnet back into service.



    A copy of this log entry has been emailed to: fansler@jlab.org, spiegel@jlab.org