Kyle and I spent the afternoon with GV11 slowly opening it and releasing gate o-rings is small incremental motions (powered the motor ~10 times up to 1000 rpm first time and then 500 rpm increments, over two days). We heard a loud noise at the top of the valve on the last incremental stroke and then continued to open the valve, observing the ball screw moving up. The status of the valve did not change from red to yellow on MEDM screen, so we suspect the limit switch broke. Therefore, we didn't want to open the valve fully to avoid utilizing the hard stops. We will investigate on Tuesday.
Prior to opening GV11, we leak checked the RGA manifold and new flanges around CP4's 10" GV. There was some sporadic He signal around the full range gauge area but nothing above 2e-9 Torr. The RGA will be rebaked later and that area will get leak checked again.
RGA was scanning before, during, and after GV11 opened. Will process and post results Tuesday.
We also burped dry N2 into GV12's gate annulus and then fully vented it to discover it is also now leak tight!
We forgot to remove a jumper in the Beckhoff rack and to reinstall fuses, upon which the MEDM status showed yellow for status transition. We were still concerned about the loud noise we heard. Kyle and Gerardo noted a misalignment in the limit switch shaft and its corresponding pulley when a straight edge is placed next to mating gear pulley. The misalignment is slight (may have always been there), and we are not concerned about the pulley belt walking off. The valve opened successfully and MEDM shows it as green.