Sharing experience in repairing Lexin commercial refrigerators

It is very common to use Lexin commercial refrigerators in Hong Kong. After all, Lexin is a local brand with high cost performance. At the same time, you should also pay attention to the cleaning and maintenance of commercial refrigerators that run 24 hours a day, especially when encountering abnormal situations. Hong Kong Junhong Electrical Appliance Repair Center has encountered many cases of Lexin refrigerators not cooling before. Let’s share its repair experience.

1. Lexin commercial refrigerator does not cool

If you encounter a non-cooling situation when repairing Lexin commercial refrigerators, you must first check the cooling system and then the compressor. You must make a judgment based on usage habits and environment. Next, let’s talk about the process of repairing commercial refrigerators.

(1) When repairing a Lexin commercial refrigerator, first check the condenser to confirm whether the cooling fins of the condenser are blocked. For example, the kitchens of many catering institutions are full of oil stains, and the cooling fins of the condenser of commercial refrigerators are not blocked. It is also common for the gaps to be blocked by grease. Make sure that there is no problem with heat dissipation such as fins before cleaning.

(2) The next thing to check is the condensing fan, which is key to whether the cold air can flow evenly. If the fan does not rotate, check its resistance value again, and then gradually check the open circuit area and replace the burned parts after finding them. .

(3) As the core component of a commercial refrigerator, the compressor must be powered off during inspection and careful disassembly. You can use a clamp ammeter to measure the working current of the compressor. If it is not within the nominal range, It means there is a problem with the compressor.

(4) The last step is to check the refrigerant system. When repairing the Lexin commercial refrigerator, it was found that the refrigerant amount was insufficient, which caused the cooling effect to become weaker and weaker. The problem was solved after adding refrigerant according to the pressure gauge.

2. The temperature of Lexin commercial refrigerator fluctuates high and low

When repairing Lexin commercial refrigerators, we also encountered a situation where although the refrigerator was cooling, the temperature inside the cabinet was unstable. For this, we need to check core components such as sensors. The specific inspection and maintenance procedures are as follows.

(1) Pay attention to the environment when repairing Lexin commercial refrigerators. For example, if there are ovens and other high-temperature commercial appliances around, the temperature of the refrigerator may be unstable. Then check the sealant edge to confirm whether the sealant edge is aged or damaged. Resulting in poor sealing performance.

(2) When checking the temperature sensor, you must use a thermometer to verify its temperature, and use a multimeter to check whether the resistor voltage is abnormal. The position of the sensor must also be checked.