<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>Marco,</div><div>Could you please post the oscillation of the air pressure today morning in more detail?</div><div>Thanks,</div><div>Valery</div><div><br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="border-left: 2px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Marco Mirazita" <Marco.Mirazita@lnf.infn.it><br><b>To: </b>"Valery Kubarovsky" <vpk@jlab.org><br><b>Cc: </b>"dsg-rich" <dsg-rich@jlab.org><br><b>Sent: </b>Monday, January 15, 2018 3:38:45 PM<br><b>Subject: </b>Re: [Dsg-rich] RICH air cooling<br></blockquote></div><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="border-left: 2px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;">Please have a look at this logbook entry<br>https://logbooks.jlab.org/entry/3513977<br>Marco<br><br><br>Il 2018-01-15 14:41 Valery Kubarovsky ha scritto:<br>> Could you please post the time history for pressure and air flow?<br>> Thanks,<br>> Valery<br>> <br>>> On Jan 15, 2018, at 14:38, Marco Mirazita <Marco.Mirazita@lnf.infn.it> <br>>> wrote:<br>>> <br>>> I don't know exactly what happened. This morning I reduced the air <br>>> flow of the line A from 550 to 500 and after a while the air flow and <br>>> the pressure started to go up and down.<br>>> Marco<br>>> <br>>> <br>>> Il 2018-01-15 14:31 Valery Kubarovsky ha scritto:<br>>>> Hi Marco,<br>>>> Did you investigate what happened?<br>>>> I saw the drop in the air pressure in the tank. Was compressor on <br>>>> when<br>>>> you were in the Hall?<br>>>> Valery<br>>>>> On Jan 15, 2018, at 14:26, Marco Mirazita <br>>>>> <Marco.Mirazita@lnf.infn.it> wrote:<br>>>>> Hi all,<br>>>>> in the last couple of days we experienced some instability in the <br>>>>> RICH air cooling system, resulting in the interlock shutting down <br>>>>> the electronics power supply.<br>>>>> The interlock limits have now been changed to avoid that.<br>>>>> Since the hall is now open till tomorrow at noon, it would be a good <br>>>>> opportunity to check the system.<br>>>>> Marco<br>>>>> _______________________________________________<br>>>>> Dsg-rich mailing list<br>>>>> Dsg-rich@jlab.org<br>>>>> https://mailman.jlab.org/mailman/listinfo/dsg-rich<br>>>> _______________________________________________<br>>>> Dsg-rich mailing list<br>>>> Dsg-rich@jlab.org<br>>>> https://mailman.jlab.org/mailman/listinfo/dsg-rich<br></blockquote></div></div></body></html>