ELOG Solenoid

Solenoid logbook

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Entry time:	Wed Jan 15 13:54:56 2025
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> The solenoid was found to be warm on Monday morning. M9Q3 had a bad water > leak over the weekend. The water header serving Q3 was turned off and the > leak confirmed. Q3 was isolated and the header was turned back on. My > supposition is that while the main header was turned off, the diff. pump > under the solenoid tripped. When I looked at it this morning the > compressor was off and the vesssel vacuum was very bad. The PLC connection > to EPICs is down, so I can not restart the vacuum system yet. Mike Leross > is looking at the problem. > There was no trip signal to the main control room. It looks as though the > control room signal was bypassed downstairs. > The power supply fault light was on on the QRL panel, but I okayed Bob > Hilton locking out the power supply in order that Q3's water leak can be > repired. Shutting of the main breaker may have turned on this light. The > other possibility is that the power supply was not ramped down and shut > off properly. Encoding: HTML ELCode plain Suppress Email notification

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