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| 40m Log |
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 Thu Dec 12 17:22:07 2013, Steve, Update, General, rack power supplies checked 8x
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 Fri Dec 13 16:34:20 2013, Steve, Update, VAC, PS will be replaced next week
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Fri Dec 20 20:04:01 2013, Steve, Update, VAC, power supply replaced with a short vent
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Fri Dec 20 23:00:41 2013, Koji, Update, VAC, power supply replaced with a short vent
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Sat Dec 21 10:53:35 2013, Steve, Update, VAC, power supply replaced with a short vent-pumpdown completed
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Fri Jan 3 11:18:41 2014, Steve, Summary, VAC, power supply replaced with a short vent
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Thu Feb 22 10:49:11 2018, Steve, Update, Electronics, rack power supplies checked 8x
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Message ID: 9467
Entry time: Fri Dec 13 16:34:20 2013
In reply to: 9458
Reply to this: 9506
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| Author: |
Steve |
| Type: |
Update |
| Category: |
VAC |
| Subject: |
PS will be replaced next week |
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| Quote: |
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Instrument rack power supplies checked and labeled at present loads.
The vacuum rack Sorensen is running HOT! Their is only 0.3A load at 24V There is plenty of space around it.
It is alarming to me because all vacuum valve positions are controlled by this 24V
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The temperature went down to room temp with temporary fan in the back. Voltage and current are stable.
Regardless, it will be replaced early next week. |
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