The campus cooling system at Iowa State is back up and running — but classes won’t return to normal until Monday.

Information from I-S-U says crews were able to restart the cooling system faster than originally thought following a fire at the university’s power plant Thursday. But it will take time for some campus buildings to cool down and classes will be virtual today (Friday).

The Ames Fire Department reported a piece of equipment at the power plant failed and caught operating oil that was connected to it on fire. It took firefighters about an hour to put out the fire.