My evaporative cooler is not putting out any cool air.

First, make sure the water source and electricity source to the evaporative cooler are connected and working. Second, ensure there is water in the tank. It should be allowed to fill before you turn the pump on. Finally, check to see if the Kuul evaporative media is damp. If not, adjust the water flow with the water adjustment valve until water is flowing smoothly over the evaporative media surface.