Cube ice machine: The reasons for the decreased refrigeration effect of the cube ice machine may involve multiple aspects.

Evaporator Issues: The evaporator is a critical component in the cube ice machine, responsible for evaporating the refrigerant to absorb heat. If the surface of the evaporator is contaminated or fouled, its heat transfer efficiency will decrease, thereby affecting the refrigeration effect. Additionally, excessive ice buildup on the evaporator surface can also lead to a decrease in its heat transfer effectiveness. Therefore, regular cleaning of the evaporator and monitoring its icing condition is crucial.

Poor Insulation and Sealing Performance: The insulation layer of the cube ice machine is responsible for maintaining temperature stability in the refrigeration space, while sealing performance prevents refrigerant leakage. If the insulation layer is damaged or the sealing performance is poor, it will lead to increased refrigerant loss, thereby reducing the refrigeration effect. Therefore, it is important to ensure the quality of the insulation layer and sealing performance during production and use, and to promptly repair any damaged parts.

Refrigerant Issues: The refrigerant circulates in the cube ice machine, achieving the refrigeration effect through the processes of evaporation and condensation. If the refrigerant is undercharged or there are leaks in the system, it will result in insufficient refrigerant circulation, thereby affecting the refrigeration effect. Therefore, regular checks of the refrigerant level and leaks are essential, and timely replenishment or replacement of the refrigerant is necessary.

Compressor Issues: The compressor is the core component of the cube ice machine, responsible for driving the circulation of the refrigerant. If the compressor efficiency is low, severely worn, or the sealing performance is reduced, it will result in insufficient refrigerant capacity, thereby affecting the refrigeration effect. To maintain the compressor's performance, regular maintenance and replacement of compressor components are required.

Expansion Valve Issues: The expansion valve is used to control the flow of refrigerant to match the load of the evaporator. If the expansion valve is improperly adjusted or blocked, it will result in excessive or insufficient refrigerant flow, thereby affecting the refrigeration effect. Therefore, regular inspection and adjustment of the expansion valve's operation are necessary.

Control System Issues: The control system of the cube ice machine is responsible for monitoring and regulating the operation of various components to ensure optimal refrigeration effect. If the control system fails or is improperly set, it will affect the refrigeration effect. Therefore, regular inspection and calibration of the control system components are necessary.