Reports until 12:03, Tuesday 27 September 2016
LHO VE
kyle.ryan@LIGO.ORG - posted 12:03, Tuesday 27 September 2016 - last comment - 15:11, Tuesday 27 September 2016(30005)
Intalled and tested scroll backing pump at Vertex Turbo
 
Installed and tested the scroll backing pump for the Vertex Turbo (part of a site-wide modification to main turbo pumps which allows selecting either QDP80 or scroll pump to back Turbo).  Confirmed that the Turbo's fore-line isolation valve (aka "Safety" valve) closed at the loss of scroll pump control cable connection or AC at its motor winding, i.e. that the backing pump interlock functionality remained as originally designed.  

Also - Ran both Corner Station QDP80 pumps for ~2 hours and energized all four Turbo Pump controllers (done weekly to charge levitation batteries)  

Leaving Vertex Turbo controller energized until after lunch to allow rotor to slow down after braking.
Comments related to this report
kyle.ryan@LIGO.ORG - 15:11, Tuesday 27 September 2016 (30015)
1457 - 1500 hrs. local -> In and out of LVEA to de-energize Vertex Turbo controller