[Dsg-rich] [EXTERNAL] Re: AirFlow1 problem

[Valery Kubarovsky]

Hi Tyler,
Please take a look to the airflow1 reading. It goes suddenly almost to zero. Obviously it is a glitch. The air pressure returned back to normal now. Probably, this glitch Is connected with the pressure adjustment that was done by Bob.
Valery


________________________________
From: Tyler Lemon <tlemon at jlab.org>
Sent: Tuesday, March 3, 2020 14:01
To: Marco Mirazita; Valery Kubarovsky; Bob Miller
Cc: dsg-rich
Subject: Re: [EXTERNAL] Re: [Dsg-rich] AirFlow1 problem

Hi Valery and Marco

It looks like right before the lower airflow 1 reading, the buffer tank pressure did not reach the same upper pressure and also went to a lower pressure than usual. This is in the red box in the attachment. The drop in air flow is probably due to the system trying to catch up and get back to the normal operating pressure.

What is the status of the other RICH compressor that was removed from the hall? Last I heard Hall B Engineering was looking into repairing it.

Best regards,
Tyler


________________________________
From: Marco Mirazita <Marco.Mirazita at lnf.infn.it>
Sent: Tuesday, March 3, 2020 1:57 PM
To: Valery Kubarovsky <vpk at jlab.org>
Cc: Tyler Lemon <tlemon at jlab.org>; dsg-rich <dsg-rich at jlab.org>
Subject: [EXTERNAL] Re: [Dsg-rich] AirFlow1 problem

The average flow is reduced and the temperature of the FPGA is
increasing.
This could be potentially dangerous, if the temperature keeps going up
we could reach the interlock limit.
Marco


Il 2020-03-03 13:41 Valery Kubarovsky ha scritto:
> Hi Tyler,
>
>  I got an alarm AirFlow1
>
>  PV: B_DET_RICH_INTLK_AIRFLOW1 - Description: MINOR alarm:
> B_DET_RICH_INTLK_AIRFLOW1 - Alarm Time: 2020/03/03 13:24:47.458 -
> Current Severity: MINOR - Current Status: LOW_ALARM - Alarm Severity:
> MAJOR - Alarm Status: LOLO_ALARM - Alarm Value: 394.37678458612845
>
>  Could you please take a look?
>  Probably we have a problem with the airflow sensor.
>
>  Thanks,
>  Valery
>
>
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