Robert and I went into the Fan rooms to check on Supply Fan 4. When we entered the hall between Fan rooms there was water on the floor. The last time this happened it was a clogged condensate drain. So we check the Fan 1 and 2 room and sure enough more water.
Starting at 2:30 PM until 3 PM PST we (Randy, Fil and Richard) ran a shop vac outside the Fan rooms where the condesate drains exit the enclosure. We were able to drain the condensate pans so no additional water shoule run onto the floor.
We have left the water on the floor in the fan rooms as a Tuesday activity.
Thank you Randy for your assistance.
While obviously this is critical maintenance that needed to be done regardless of IFO state, it happens that we were in Commissioning mode (not Observe) during this time, doing driven calibration measurements. So, there should be no effect on any Observing mode data quality for this segment, and no need for any special DQ flags or investigations.