Case sharing on maintenance of Lianpin commercial refrigerator not cooling

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A few days ago, Junhong Electrical Appliances received a call from a supermarket chain. The customer reported that the temperature of the Lianpin commercial refrigerator he used was gradually rising, making it impossible to maintain the freshness of the ingredients. After receiving the repair request, our professional Maintenance personnel rushed to the scene quickly and found that the fault was a LPR-800 refrigerator. The customer reported that the temperature inside the refrigerator continued to be around 8°C after being used for a period of time, and then the temperature could not drop. Let’s talk about the details. maintenance process.

The maintenance staff first conducted a visual inspection of the Lianpin commercial refrigerator and found no damage to the door seal or obvious air-conditioning leakage. Next, use a thermometer to measure the temperature inside the cabinet to confirm that the temperature is indeed higher than the set value. Then cut off the power and conduct professional inspection and maintenance. The maintenance personnel opened the back of the refrigerator and found that the evaporator was severely frosted, which would lead to a decrease in cooling efficiency. After careful inspection, it was found that refrigerant leakage was the main cause of the temperature rise. In order to further confirm that the maintenance personnel used a pressure gauge to measure the pressure of the refrigeration system, the result showed that the compressor pressure was low, which once again confirmed the previous conjecture and basically confirmed the problem of insufficient refrigerant.

After becoming aware of the problem with this Lianpin commercial refrigerator, the maintenance staff immediately took measures. The first step was to find the leak and repair it. Because the leak this time was a very thin conduit, we directly replaced it with a new delivery conduit. After solving the leak, the maintenance staff evacuated the system and added a suitable model. Refrigerant was added to ensure the normal operation of the refrigeration system, and then the fan was checked. The fan could dissipate heat normally and no abnormalities were found. After that, the evaporator was thoroughly cleaned to remove frost to ensure air circulation and restore the cooling effect.

The importance of refrigerant can be seen in the Lianpin commercial refrigerator repair case shared above. If you find that the refrigerator cannot reach the preset temperature, you can first check whether the refrigerant needs to be added, and use this as the core to troubleshoot and Maintenance, if you have no maintenance experience, it is recommended to entrust a professional maintenance organization like Junhong Electric.