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Reports until 21:43, Tuesday 14 June 2016
LHO VE
kyle.ryan@LIGO.ORG - posted 21:43, Tuesday 14 June 2016 - last comment - 16:11, Wednesday 15 June 2016(27741)
CP5 LLCV %open seems high 


			
			


		
		






	
	


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		chandra.romel@LIGO.ORG - 16:11, Wednesday 15 June 2016 (27761)
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Chandra, Gerardo

-Adjusted CP5 Dewar pressure regulator 1/4 turn CW to raise Dewar pressure (nominally at 15 psi). Will wait hours/days to see results. 
-Measured Dewar vacuum jacket pressure = 20 microns, satisfactory.
-Magnehelic readout is noisy - jumps from 35-40 in. of H20, even when CP5 is in manual mode.
-Manually tested full range of stroke of electronic actuator - looks OK.
-Tightened actuator support/brace nuts along unistrut.
-Noticed needle of valve has wiggle (more than CP6). Verified packing nut is adjusted properly and coupling nut and needle are fully threaded.

So now we wait to see if adjusting pressure of Dewar has an impact.



		
		


	
	


	
	


		kyle.ryan@LIGO.ORG - 21:58, Tuesday 14 June 2016 (27742)
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Not able to trend - was sitting around 100% but maybe just big swing?


		
		


	
	


	
	






		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		

		
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