The Whirlpool WP37001240 Dryer Timer is a vital part to regulate the drying cycles in your Whirlpool, Maytag, Amana, Crosley, or Magic Chef dryer. It serves as the cognitive centre of the drying process, deciding how long each cycle endures by controlling the flow of power to various parts of the dryer. Consider it like a conductor in an orchestra, making sure each stage of drying happens in the correct sequence and at the right moment. When you select a drying cycle from your dryer's control panel, the timer starts the operation. It causes the heating element to activate and raise the drum temperature. It then keeps track of the elapsed time and determines when it's time to turn off the heat and start the cool-down tumble.