[Hallb-engineering] [New Logentry] Solenoid Controlled Rampdown- Unintentional and undersired!

[kashy at jlab.org]

Logentry Text:
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Folks,
At 12:57 today the pressure on the return from the Halls to the purifer spiked from 1.1 to 1.25 almost instantenously. This cause our Solenoid (which was being mapped) to go into a controlled rampdown. The recovery suction pressure ramped up more slowly and then spiked down as if a bypass or supply valve on the recovery compressors was stuck then finally popped loose. 

Our system recorded a lead flow fault. 
I have increased the pressure of our VCL reservior in the hope we can become more resiliant to this type event.

What caused the quick change in pressure? 

THERE WAS NO COMMUNICATION THAT SOMETHING WAS GOING TO CHANGE AT ~13:00 TODAY.
THIS MUST CHANGE, WE NEED TO WORK TOGETHER TO KEEP THE REFRIGERATOR, THE MAGNETS AND THE PHYSICS PROGRAM ALIVE!

Please consider this a first request at better communication between Halls A,B,C and Cryo.

Thanks
Dave




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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3485297
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