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H1 CDS

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erik.vonreis@LIGO.ORG - posted 17:56, Tuesday 06 August 2024 - last comment - 09:46, Wednesday 07 August 2024(79479)

Nuc28 now showing air pressure

In response to recent failures of the air compressor that's holding open some of the gate valves:

There's now a 6-hour trend of the air pressure on the lower left corner of the top screen for nuc28.

If the compressor is working, there should be a saw tooth pattern between 60 and 85 PSI, at 90+ minutes per tooth.

When the pressure drops below 40, the pneumatic gate valves are in danger of closing.

Comments related to this report

jonathan.hanks@LIGO.ORG - 18:00, Tuesday 06 August 2024 (79480)

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This can be seen on the lhocds screen shots page at (it updates regularly):

https://lhocds.ligo-wa.caltech.edu/cr_screens/png/nuc28-1.png

It is on the 'lock clock' section of the main screen shots page:

https://lhocds.ligo-wa.caltech.edu/cr_screens/

These both require credentials to access.

david.barker@LIGO.ORG - 09:46, Wednesday 07 August 2024 (79495)

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The control room reported visibility issues with the dark color scheme (blue on black). I have changed it to blue on white and thickened the line.

NUC28