Leave the unit plugged in make sure you have enough ink for the unit to do self cleaning for the 2 weeks. When you return do a couple of regular cleanings do a nozzle test. If test is good you are good to go. If not do a couple of medium cleans then test. I have left mine for 19 days before never encountered issues other than having to do a few cleanings.
What Butch stated! As long as the main power switch in the rear is on, even if there is a power interruption the machine will come on and clean. If they are shutting power the facility, then there is a procedure to pump up (clear the ink), and it can be left forever that way.
Thank you Butch and Iriving. The building should not have any power disturbance that I know of.