There are 2 outdoor water coolers/fountains Remove shrouds on both fountains Shut off and disconnected water supply for both Removed drain assembly from both units and block off drains Left parts I removed inside the shroud and put both shrouds back on their units The fountain at the back has a broken 1/4”x3/8” check valve, (part number elkay 55996C) this is why it’s not functioning. When we return to reconnect everything in the spring, this part will also need to be replaced before turning on unit. Unit is Halsey Taylor brand TE Certified cannot warranty these units against freezing unless we fully remove them and store inside for the winter, and the reinstall fully in the spring