Trouble analysis and troubleshooting of chiller

Author: Beijing Hengxing and Technology Co., Ltd. Source: http: //



Nowadays, the wide application of industrial chillers not only drives the refrigeration market, but also makes users realize the importance of maintenance and daily troubleshooting of industrial chillers. At present, many users do not know how to troubleshoot after they purchase an industrial chiller. This makes the industrial chiller of many users, when used for about a year, will have obvious cooling effect. Result in reduced service life. At the same time, it also increases the operational risk.

Beijing Hengxinghe Technology Co., Ltd. summarized some common problems for users. The following is the fault analysis and troubleshooting methods for industrial chillers:

First, the failure analysis:
The temperature of the cooling water inlet and outlet is abnormal: the inlet water temperature of the condenser is too high (higher than 32). First, check whether the cooling tower fan is reversed (there is such an example in actual engineering); then it is through technical demonstration and, if feasible, Adjust the fan blade angle to increase the air volume of the fan. Another phenomenon often occurs in systems where multiple cooling towers are used in parallel. When part load is running, the temperature difference between the inlet and outlet of the condenser is too small. It is necessary to check whether each cooling tower has an electric valve, or whether the electric valve has been set. Failure caused the cooling water to bypass and not completely cooled.

The pressure difference between the inlet and outlet of the cooling water is abnormal; according to the refrigeration theory, the heat release of the condenser directly affects the cooling capacity. Therefore, the cooling water system should be checked first. Based on the pressure loss value on the nameplate of the main unit, if the pressure difference from the reading of the pressure gauge at the entrance and exit is much larger than the normal value, there is a blockage of debris at the inlet of the condenser. Opening the inlet end water seal shows that the copper pipe has a small diameter. Since the cooling water is an open system, the debris is scattered on the water collecting tray and enters the system with the water flow. Once the water filter mesh is broken, it is collected into the condenser inlet. Therefore, it is necessary to remove debris.

Second, troubleshooting methods:
When the fault indicator and the protection switch are all normal, the compressor cannot be started. Please check:
1. Is the temperature switch too high or damaged?
2. Whether the switch is damaged;
3. Whether the antifreeze switch is damaged;
4. Whether the pressure switch is tripped or damaged;
5. Is the compressor overload protector damaged or tripped;
6. Is the electromagnetic relay coil damaged and the overload protector damaged?
7. Is the liquid level too low in the water tank;
8. Please check if the chilled water flow switch is damaged.

Note: If the above control switch or line is faulty, the compressor will not operate.

These are the methods that every user should use in their daily operations. These methods will help us to use industrial chillers better, safer and more convenient. At the same time, it also extends the service life of industrial chillers. Thereby reducing the replacement cost and improving the work efficiency. Many users also frequently consult with Beijing Hengxinghe Technology Co., Ltd. on product and technology. The company also often organizes skills training for users and trains on-site operators for free.

After reading the above content, everyone will certainly have some gains in the analysis and elimination of the chiller's failure. And these small gains, I believe that in the future chiller operation will help you solve some problems. This not only enriches everyone's knowledge, but also improves the working efficiency and service life of the chiller. To find out more about the chiller products of Beijing Hengxinghe Technology Co., Ltd., please log in to learn more.

Beijing Hengxinghe Technology Co., Ltd.
BEIJING HXH TECHNOLOGY CO.,LTD
Telephone, 82940848
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Address: No. 380, Jingchang Road, Beijing, China Postcode: 100096
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