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| 40m Log |
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 Sun Jul 23 15:00:28 2017, Jamie, Omnistructure, VAC, strange sound around X arm vacuum pumps
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 Mon Jul 24 09:55:29 2017, Steve, Omnistructure, VAC, controller failer 
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Tue Jul 25 08:48:57 2017, Steve, Update, VAC, RGA scan at d278
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Mon Aug 28 10:28:07 2017, Steve, Update, VAC, RGA scan 20 day after 17 Torr
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Tue Jan 30 10:22:20 2018, Steve, Update, VAC, RGA scan at day 175
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Fri Mar 16 09:36:56 2018, Steve, Update, VAC, RGA scan at day 511,218d
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Mon Mar 26 09:25:18 2018, Steve, Update, VAC, VM1 opened
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Tue Mar 27 08:58:21 2018, Steve, Update, VAC, VM1 opened.......scan fine
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Tue Sep 19 11:05:26 2017, Steve, Update, VAC, RGA scan at day 334
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Fri Oct 27 10:14:11 2017, Steve, Update, VAC, RGA scan at day 372
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Mon Oct 30 10:09:41 2017, Steve, Update, VAC, TP2 failed
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Mon Nov 6 09:09:43 2017, Steve, Update, VAC, setting up new TP2 turbo
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Tue Jul 25 14:04:06 2017, Steve, Update, VAC, turbo controller installed and we are running at vac normal
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Message ID: 13702
Entry time: Mon Mar 26 09:25:18 2018
In reply to: 13685
Reply to this: 13709
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| Author: |
Steve |
| Type: |
Update |
| Category: |
VAC |
| Subject: |
VM1 opened |
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CC1 old MKS cold cathode gauge randomly turns on- off. This makes software interlock close VM1 to protect RGA So the closed off RGA region pressure goes up and the result is distorted RGA scan.
CC1 MKS gauge is disconnected and VM1 opened. This reminds me that we should connect our interlocks to CC1 Hornet Pressure gauge.
| Quote: |
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Pumpdown 80 at 511 days and pd80b at 218 days
Valve configuration: special vacuum normal, annuloses are not pumped at 3 Torr, IFO pressure 7.4e-6 Torr at vac envelope temp 22 +- 1C degrres
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