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| 40m Log |
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 Tue Aug 8 17:04:26 2017, Steve, Update, VAC, unintended pump down 
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 Tue Aug 8 17:44:11 2017, Steve, Update, VAC, unintended pump down
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Wed Aug 9 11:59:51 2017, Steve, Update, VAC, unintended pump down at vacuum normal
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Thu Aug 10 15:45:34 2017, Steve, Update, VAC, accidental vent to 17 Torr
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Mon Aug 21 16:35:48 2017, gautam, Update, VAC, UPS checkup
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Wed Aug 23 10:11:46 2017, Steve, Update, VAC, vacuum valve specifications
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Tue Aug 29 15:35:19 2017, Steve, Update, VAC, vacuum pump specifications & manuals
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Message ID: 13175
Entry time: Wed Aug 9 11:59:51 2017
In reply to: 13172
Reply to this: 13186
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| Author: |
Steve |
| Type: |
Update |
| Category: |
VAC |
| Subject: |
unintended pump down at vacuum normal |
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pd80b has reached Vac Normal. IFO pressure 0.5 mTorr
We need our vauum channels back in dataviewer.
| Quote: |
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Pumpdown stopped for over night at ~ 1 Torr
The roughing line disconnected. Valves condition indicator "moving " means that it is closed and it's cable disconnected so it can not move.
The RGA is off and VM1 is stuck.
| Quote: |
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IFO pressure 2 Torr, PSL shutter closed. I'm pumping down with 2 roughing pumps with ion pump gate valves open and annulosses at atm.
The vacuum envelope was vented to 17 Torr while I was replacing the USP battery stack. More about this later.....
Do not plan on using the interferrometer tonight. I will complete the pumpdown tomorrow morning.
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