Discharge tube

Ice cubes that remain firmly attached to the evaporator despite extended harvest cycles often indicate a discharge tube that cannot deliver sufficient hot gas to warm the freezing surface. This 1861511002 discharge tube transports high-temperature refrigerant vapor from the compressor discharge port to the evaporator during the harvest cycle, providing the thermal energy necessary to release ice cubes without mechanical force. When this tube leaks, restricts, or loses insulation, youll encounter symptoms including extended harvest times, incomplete ice release requiring manual intervention, and frost accumulation on the tube exterior indicating refrigerant migration outside the intended path. Technicians diagnose discharge tube issues by verifying temperature rise at the evaporator inlet during the harvest cycle insufficient heating indicates restricted or leaking hot gas delivery. The tube operates at high pressure and temperature, making it susceptible to fatigue cracking at bends and connection points. Internal restrictions from copper oxide flake or external damage from contact with sharp edges reduce flow capacity, extending harvest duration and reducing production efficiency. The tube insulation must remain intact; exposed sections lose heat to ambient air before reaching the evaporator, reducing defrost effectiveness. Installing this replacement discharge tube restores the sealed, insulated path that delivers adequate hot gas for efficient harvest cycles. The tube geometry matches the OEM routing that prevents contact with vibrating components or sharp edges that cause wear. For service professionals, this component resolves long harvest cycles, ice not releasing, and frost on hot gas line complaints that indicate refrigerant system failures affecting the defrost function rather than temperature sensor or control timing issues.