[dsg-hallb_gas] hall B: LTCC S6 MFC

[Marc Mcmullen]

Hi Morgan,

I'll take a look at it when I return from the break. For now I will set the supply controls so they will not try to open S6. I am not sure if the s6 solenoid is still connected to power.

Marc
________________________________
From: Morgan Cook IV <mcookiv at jlab.org>
Sent: Thursday, December 21, 2023 10:21 AM
To: Marc Mcmullen <mcmullen at jlab.org>; Brian Eng <beng at jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas at jlab.org>
Subject: Re: hall B: LTCC S6 MFC

Hey Marc,

This is a different issue. Neither the supply nor return coil/solenoids respond to the controls for Sector 6, although they work fine when connected to a different sector's controls.
The sector 6 controls also fail to operate other sectors coil/solenoids when connected to them. The associated 're-circ-it' circuit breakers appear to be okay. However, we're only getting ~95v out.
We'll need to revisit this after the break.

Regards,
Morgan



________________________________
From: Morgan Cook IV <mcookiv at jlab.org>
Sent: Tuesday, December 19, 2023 10:15 AM
To: Marc Mcmullen <mcmullen at jlab.org>; Brian Eng <beng at jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas at jlab.org>
Subject: Re: hall B: LTCC S6 MFC

Thanks Marc, I'll look into it.

-M
________________________________
From: Marc Mcmullen <mcmullen at jlab.org>
Sent: Tuesday, December 19, 2023 8:49 AM
To: Morgan Cook IV <mcookiv at jlab.org>; Brian Eng <beng at jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas at jlab.org>; Marc Mcmullen <mcmullen at jlab.org>
Subject: Re: hall B: LTCC S6 MFC

Hi Morgan,

I changed the set point to get the MFC to respond. It closes when set to 0 and opens full when set to 1. Sounds like the the supply solenoid may be the issue.

If you have to replace the solenoid, I would use the coil that is on the valve if its not bad. Just make sure you replace like for like.

Marc
________________________________
From: dsg-hallb_gas <dsg-hallb_gas-bounces at jlab.org> on behalf of Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas at jlab.org>
Sent: Tuesday, December 19, 2023 8:31 AM
To: Morgan Cook IV <mcookiv at jlab.org>; Brian Eng <beng at jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas at jlab.org>
Subject: Re: [dsg-hallb_gas] hall B: LTCC S6 MFC


Hi Morgan,



I just pinged both the cRIO (hb-crio-ltcc) and the sector 6 mfc (hb-mfc-ltcc-s6) and both are on the network. So it is not a power issue. The software has not lost contact with the mfc according to the expert panel.



Have you rebooted the cRIO, or just the MFC? I am still trying to verify whether we are getting data from the cRIO or not.



Both Brian and I are on vacation so I have sent this to the mailing list. I’ll contact the other DSG staff so they can look into this.



Marc



From: Morgan Cook IV <mcookiv at jlab.org>
Date: Tuesday, December 19, 2023 at 8:04 AM
To: Marc Mcmullen <mcmullen at jlab.org>, Brian Eng <beng at jlab.org>
Subject: hall B: LTCC S6 MFC

Hey you guys,



The LTCC MFC for sector 6 isn't showing any flow. I've power cycled and reset it a couple of times and it's still not responding. Can y'all take a look at it?



Thanks,

Morgan
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