Reasons for the Chiller to Trip When It Starts

What causes the low temperature chiller to trip when it is turned on? This is a problem that many users may encounter when using the device for the first time. If the chiller still trips when it meets the startup conditions, first check the power supply. After eliminating the power problem, then from the control system of the equipment, as well as the equipment itself, the use of the refrigeration system and Check the environment one by one.

Today, LNEYA Refrigeration will discuss in detail the problem of chiller tripping caused by power supply factors. There are many reasons for power failure, mainly in the following three points:

1 The three-phase power supply of the power supply system is out of phase. The common power supply of chillers is 3-phase, 380V, 50HZ. If the power supply line is damaged, or the junction of the switch and the cable is loosened, and the contact failure of the switch itself, it will cause a phase loss. In particular, the failure of the switch itself is relatively common, and this kind of failure can be checked out with a multimeter.

2 The parameter setting of the switch of the power supply system does not meet the requirements. After eliminating the quality problem of the switch, if the chiller still trips when it starts, then we need to check the parameter settings. If the allowable operating current of the switch is less than the starting current, there will definitely be a tripping phenomenon. If the short-time delay current parameter is set too low, the chiller will also trip under the influence of inrush current when it rotates at low speed and high speed. Therefore, when overhauling, be sure to check the switch parameters and adjust them to an appropriate state, and protect the switch parameter settings to prevent others from making mistakes.

3 The power supply 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 disconnect the voltage or start the protection action, resulting in the shutdown of the chiller. Such problems are generally caused by the failure of the power supply equipment or the heavy line load.

The above is one of the reasons why the chiller trips when it starts: analysis of power supply failure. In order to ensure that the power supply system is in the best working state, it is necessary to supply the chiller with normal power. Users are requested to check and maintain the power supply system at ordinary times, find and eliminate problems in time, so as to avoid the chiller not running normally due to power problems.

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