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Hi Youry,</div>
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I have not come across that particular issue so far. Typically, when the GUI freezes (USB errors in our case) my sense has been that everything stops in a "fail-safe" mode, i.e. heaters off, and everything else with them.</div>
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I have been dealing with a fault in our controller lately, wherein the MFC circuit does not enter "bypass" when venting, instead shutting off, and preventing venting. This is a different issue, however, in that it is hardware related. Yours sounds like it's
control signal-related. Perhaps a soft-ware reload? Or update? Which rev. of Savannah software do you have?</div>
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Mac</div>
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Harvard CNS<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> labnetwork-bounces@mtl.mit.edu <labnetwork-bounces@mtl.mit.edu> on behalf of Youry Borisenkov <yb2471@columbia.edu><br>
<b>Sent:</b> Monday, January 27, 2020 4:13 PM<br>
<b>To:</b> labnetwork@mtl.mit.edu <labnetwork@mtl.mit.edu><br>
<b>Subject:</b> [labnetwork] Savannah ALD GUI crash - empties the N2 cylinder</font>
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<div dir="ltr">Dear All,
<div>We are experiencing a strange fault with our savannah ALD. </div>
<div>It was hard to catch but, when the Lab View GUI crashes or friezes (this happens every once in a while and the system is in Idle mode), it just sets the Nitrogen purge MFC to the max open position and empties the N2 cylinder unless we are fast to respond.</div>
<div>Did any of you had such a problem? If so, what was the solution?</div>
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<div dir="ltr">Thanks and Best Regards,
<div>Youry Borisenkov</div>
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<div style="color:rgb(136,136,136)"><font size="2" face="arial, sans-serif">Cleanroom Process Engineer</font></div>
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