Couldn't remote login to blue on Saturday (Christmas day).  Still couldn't remote login on Sunday morning->Came on-site to status 80K pump levels etc., Dave B. already on-site.  Had power loss Friday morning->Restarted MTPs @ X-end and Vertex-OK now->Toured buildings, chiller yards, LN2 dewars, Fire pump room, water room etc->Vacuum/VE OK.  Found VFD controller for "Supply" fan on AHU-2 in LSB had tripped->Reset but VFD tripped on "OVERLOAD" shortly after trying to spin-up fan->switched to "BYPASS" and let controller spin-up fan then switched over from BYPASS position->OK now.  

Misc.->CP7 dewar vapor pressure still 0 psig->Adjusted economizer regulator adjusting screw 1 full turn cw.