<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
It depends on what is actually wrong with it. Could be a fuse, could be a bad network cable, etc. We do have a spare available to swap in if need be.
<div class=""><br class="">
</div>
<div class="">Also since the solenoid logic is still running and the sectors go into a common manifold they'll still be able to lower the pressure into the manifold/tube and eventually each other.</div>
<div class=""><br class="">
</div>
<div class="">See the recent pressure drops despite the exhaust manifold MFC being offline. Also we're assuming that what the MFC manual says is true and that when the last network connection is closed the MFC valve will close. I suppose it's possible that
it's actually set to the last flow value (or stuck open) in which case all that we'll lose is the ability to see and keep track of the amount flown through it but everything else will work as expected.</div>
<div class=""><br class="">
</div>
<div class="">The rate the pressure went down sort of leads me to believe that the MFC isn't actually closed, but we'll know more if we have more events where the return solenoids are trying to open up.</div>
<div class=""><br class="">
</div>
<div class=""><img apple-inline="yes" id="326748D6-E26F-436F-8265-27151788B2E5" src="cid:FC98A67B-A26A-4793-8F5F-C3C00CA8E444@jlab.org" class=""><br class="">
<div class=""><br class="">
<blockquote type="cite" class="">On Apr 9, 2019, at 1:35 PM, Maurizio Ungaro <<a href="mailto:ungaro@jlab.org" class="">ungaro@jlab.org</a>> wrote:<br class="">
<br class="">
Hi,<br class="">
<br class="">
Is the MFC going to be replaced?<br class="">
<br class="">
Re: <a href="https://logbooks.jlab.org/entry/3677252" class="">https://logbooks.jlab.org/entry/3677252</a><br class="">
<br class="">
Thanks,<br class="">
Mauri</blockquote>
</div>
</div>
</body>
</html>