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40m Log |
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Thu Jun 11 11:48:43 2020, gautam, Update, VAC, Vac failure
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Thu Jun 11 16:14:03 2020, gautam, Update, VAC, Vac failure - probable cause is serial comm glitch  
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Thu Jun 11 17:35:34 2020, gautam, Update, VAC, Pumpspool UPS needs battery replacement
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Fri Jun 12 01:23:32 2020, Koji, Update, VAC, Pumpspool UPS needs battery replacement
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Fri Jun 12 17:32:40 2020, Koji, Update, VAC, Pumpspool UPS needs battery replacement
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Fri Jun 12 19:02:52 2020, gautam, Update, VAC, Pumpspool UPS needs battery replacement
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Fri Jun 12 19:23:56 2020, Koji, Update, VAC, Pumpspool UPS needs battery replacement
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Fri Jun 12 19:33:31 2020, gautam, Update, VAC, Pumpspool UPS needs battery replacement
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Tue Jun 16 13:35:03 2020, Jon, Update, VAC, Temporary vac fix / IFO usable again
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Wed Jun 17 16:27:51 2020, gautam, Update, VAC, Questions/comments on vacuum
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Thu Jun 18 11:00:24 2020, Jon, Update, VAC, Questions/comments on vacuum
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Thu Jun 18 12:00:36 2020, gautam, Update, VAC, Questions/comments on vacuum
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Thu Jun 18 14:13:03 2020, Jon, Update, VAC, Questions/comments on vacuum
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Thu Jun 18 15:46:34 2020, gautam, Update, VAC, Questions/comments on vacuum
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Fri Jun 19 07:40:49 2020, Jon, Update, VAC, Questions/comments on vacuum
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Fri Jun 19 09:57:35 2020, gautam, Update, VAC, Questions/comments on vacuum
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Message ID: 15394
Entry time: Fri Jun 12 01:23:32 2020
In reply to: 15393
Reply to this: 15396
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Author: |
Koji |
Type: |
Update |
Category: |
VAC |
Subject: |
Pumpspool UPS needs battery replacement |
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1. I agree that it's likely that it was the temp signal glitch.
Recom #2: I approve to reopen the valves to pump down the main volume. As long as there is no frequent glitch, we can just bring the vacuum back to normal with the current software setup.
2. Recom #1 is also reasonable. You can use simple logic like if we register 10 consecutive samples that exceed the threshold, we can activate the interlock. I feel we should still keep the temp interlock. Switching between pumping mode and the normal operation may cause unexpected omission of the interlocks when it is necessary.
3. We should purchase the UPS battery / replacement rotary TIP seal. Once they are in hand, we can stop the vacuum and execute the replacement. Can one person (who?) accomplish everything with some remote help?
4. The lab temp: you mean, 12degC swing with the AC on!?
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