[Dsg-rich] [New Logentry] RICH compressor pressure decrease investigation

[Tomassini Sandro]

Hi all,
The compressor has been working continously for a couple of years, have 
you ever  serviced it?
If not plan a service as soon as possible, maybe a clean filter or 
something else is needed.
Looking at the attached plots it seems it is working at 50% of its 
setpoint  pressure and never stops, it sounds like there is a loss of 
efficiency in the device.
Sorry for my considerations
Have a good day
Sandro

Il 11/04/2019 16:32, Valery Kubarovsky ha scritto:
> Hi Brian,
> I also noticed that the compressor changed the behavior during the last year.
> Take a look to the attached plots. In April 2018 the frequency of oscillations is different from October 2018. The time range is 8 hours, one shift.
> In April 2019 the compressor is working all the time.
> Regards,
> Valery
>
> On 4/10/19, 11:12, "Brian Eng" <beng at jlab.org> wrote:
>
> - 2018 Apr - compressor always cycling on and off
> - 2018 Oct - compressor cycling on and off & periods of it not
> - 2019 Feb - compressor never cycling
>
>
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-----------------------------------------
Dr. Eng. Sandro Tomassini
Istituto Nazionale di Fisica Nucleare
Laboratori Nazionali di Frascati
---Research Division---
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e-mail: sandro.tomassini at lnf.infn.it
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