What should I do if the freezer trips

What should I do if the freezer trips

Tripping when the freezer starts is a problem that many users may encounter when using the freezer for the first time. Domestic refrigerators are widely used. Although domestic refrigerators have high performance, they also have the possibility of failure during actual use. When the refrigerator meets the starting conditions, it still trips. Then first check from the power supply. After troubleshooting the power supply problem, check the unit control system, and the unit itself, the use of the refrigeration system and the environment. Check one by one.

　　 There are many reasons for power failure, mainly in the following three points:

　　 First, the three-phase power supply of the power supply system lacks phase. The commonly used power supply for refrigerators is 3-phase, 380V, 50HZ. If the power supply line is damaged, or the connection between the switch and the cable is loose, and the contact failure of the switch itself, it will cause a lack of phase, especially the failure of the switch itself is more common Yes, this type of failure can be detected with a multimeter.

　　 Second, the parameter setting of the power supply system switch does not meet the requirements. After the quality problem of the switch is eliminated, the freezer will still trip when starting, then we have to check the parameter setting. If the allowable working current of the switch is less than the starting current, it will definitely start tripping; if the short delay current parameter is set too low, the refrigerator will trip under the influence of the impact current when the speed is low to high speed. Therefore, when overhauling, be sure to check the switch parameters and adjust them to the appropriate state, and set the switch parameters with A and B protection to prevent others from wrong operations.

　　 Third, the three-phase output quality of the power supply system. For example, if the three-phase power supply voltage is insufficient, or the output is unbalanced, the relay will have voltage disconnection or start the protection action, which will cause the refrigerator to stop. Such problems are generally caused by the failure of the power supply equipment or the line load. .

The above is the power supply failure analysis of the reason for the tripping of the freezer at startup. In order to ensure that the power supply system is in the best working condition to supply the freezer unit with normal power supply, all users are required to check and maintain the power supply system on a quarterly basis. Find out the problem in time and eliminate it to avoid the abnormal operation of the chiller unit due to power supply problems. We can master the method of eliminating the tripping failure of the freezer, combined with our own specific capabilities, to achieve the purpose of ensuring the smooth operation of the freezer, and being able to learn such maintenance skills will play a vital role in reducing the failure of the freezer.