The Scotsman 18-8776-21 Refrigerator Compressor is used to circulate refrigerant through the cooling system and maintain the required internal temperature. It compresses low-pressure refrigerant gas and moves it through the refrigeration cycle, allowing heat to be removed from the storage compartment. Proper compressor operation supports consistent cooling and reliable ice machine per... https://www.hnkparts.com/scottsman-18-8776-21-refrigerator-compressor-95892/4-18-8776-21.html