Maintanence day is currently chugging along with most of the work already completed. The main items left to do are the EX PCAL measurement, VAC turbo pump/scroll pump and cross installation, and potential OMC scans. It was noted that sometime this morning, the Kepco power supply fan in the CER powering the ASC/LSC IO chassis malfunctionated and is now making a loud rattling sound (the leading theory is that one of that supply fans broke off). After consulting with commissioners and Dave/Fil, it has been decided to replace this power supply fan ASAP. The commissioning team has just completed reconciling SDFs and Dave has just powered down the IO chassis and the EE team will soon go into the CER to swap the power supply - WP11502.