see WP #7343 1630 hrs. local -> Lowered CP4's level via CDS PI control set point to 70% down from 75%. I expect this new pump level value should be reached prior to my leaving tonight. Will start tomorrow morning with step 2 of WP #7343 (as step 1 was done this weekend). Delay is the result of competing employee requirement/task in addition to my desire to complete construction of a relay box that will act as a second interlock and isolate the scroll pump as a function of foreline pressure. As is, the foreline isolates only at the absence of 120VAC as seen by the scroll pump motor windings (i.e. one layer of protection - prefer two layers).