Cooling systems on large campuses (colleges, businesses, theme parks, etc.) work far differently than what homes and buildings use. They rely on cooling or chilling facilities that are entire buildings dedicated to cooling water or air as efficiently as possible and then distributing it across the campus. I assume that it was I such a building the problem arose.
This would not be a legacy system, but most likely a state of the art facility that functions far more effectively than what we use at home.
It would also have nothing to do with the power grid aside from using energy from it.