The PSL was switched to the commissioning mode this morning for approximately one hour for the weekly cleaning. Karen and I entered the PSL enclosure. After the cleaning the PSL was then switched back to the science mode again.

Note: when we followed Robert's instruction to switch it to the commissioning mode the HEPAs in the laser room didn't come up for some reason. We could notice it because the laser room was too quiet. This might be some sort of bug. Toggling the HEPAs off and on on the touch panel eventually made it running.