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<article id="node-1457538" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4384478" rel="bookmark">ECal cRIO expansion chassis reboot required and AC1 off</a>
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Lognumber <a href="https://logbooks.jlab.org/entry/4384478" class="lognumber" data-lognumber="4384478">4384478</a>. Submitted by <a href="https://logbooks.jlab.org/user/jonesdc">jonesdc</a> on <time datetime="2025-05-27T06:19:01-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1748337541&end_date=1748344741&book=HALOG">Tue, 05/27/2025 - 06:19</a></time>. </p>
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<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr>
<tr><th>Entry Makers: </th><td>jonesdc</td></tr>
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<p>Around 4:08 AM the shift crew called me and said the left pump pressure was alarming. I opened the GUI remotely and found that the left pump pressure was reading 14-15 inH2O when it usually is between 11 and 12. It appeared to be an instantaneous change like you would expect from radiation. There was another reading glitch 40 minutes earlier that affected the right pump pressure and two ambient enclosure temperature readings but the system recovered from these. However, the left pump pressure readout issue persisted. I logged in to the power strip and rebooted the cRIOs expansion chassis on outlet 8 and everything returned to normal. However, I noticed that the ambient temperatures had started rising around 4AM. This was unrelated to the glitches causing alarms, but because I was looking at the strip charts I happened to notice it. I played with turning air conditioners off and on remotely and concluded that one of them had turned itself off. I came in because I was not sure if it was a radiation induced shutoff or a system self shutdown due to the system getting too cold. I got an escorted access into the hall and found AC1 off. I restarted it and everything appeared to be working so I concluded it was a temperature-related shutdown. Enclosure temperatures have largely recovered.</p>
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<div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2025/05/4384478/Screenshot from 2025-05-27 06-18-24.png" width="960" height="1027" alt="" /></div> </div>
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