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How to Maintain Air-Cooled Chillers?

Aug. 23, 2022

Air-cooled chillers, as relatively efficient refrigeration equipment in chiller products, are widely used in the domestic industrial market and become necessary equipment for many industrial productions.

At the same time, although the air-cooled chiller is equipped with multiple protection devices, these are all to prevent failures from directly damaging the unit. If the company wants to ensure that the air-cooled chiller has high cooling efficiency and long service life, it must remember to do regular maintenance. So, how should the normal safety maintenance and inspection of air-cooled chillers be carried out?

1.Check the stability of voltage and current

When the air-cooled chiller works normally, the voltage is 380V (the voltage of DYJ-01A~DYJ-02A is 220V, and the voltage of other regions abroad also has 410V, etc.), and the current is normal within the range of 11A-15A.

2. Regularly check the compressor

The compressor is the "heart" of the chiller, and its quality directly affects the stability of the chiller. The necessary acceptance test of the chiller should be carried out in accordance with the principle of airtightness test first, vacuum test second, sub-item test first, and complete machine test second.

Series Modular Air-cooled Scroll Chiller

3. Regular cleaning

In addition to checking the technical performance of the chiller, it is also important to protect the clean appearance of the chiller and the cleanliness of the worksite. When the air-cooled chiller is running for 6 months, the entire system must be cleaned, such as pipes, filters, condensers, fans, etc., especially fans. Like our commonly used fans, dust will affect heat dissipation, so the cooling efficiency will Directly lower.

4.Check the meter regularly

The temperature control meter is out of control. Replace the temperature control meter. High-pressure failure. Poor heat dissipation. The radiator is too dirty. The radiator can not be cleaned. Improve ventilation conditions. The heat dissipation fan does not work. Check whether the fan motor is burnt out and short circuit. Repair or replace the motor. 

5.Regularly check whether the refrigerant has decreased

Judge according to the high and low-pressure gauge values on the front of the air-cooled chiller. When the chiller is running normally, the high pressure is 11-17kg, and the low pressure is 3-5kg. In the shutdown state, both high pressure and low pressure are around 0.6kg.

The high-efficiency refrigeration function of air-cooled chillers is inseparable from the daily maintenance and safety inspection of the products, so it is very important to check the operation of air-cooled chillers.


In addition to the main inspections above, pay attention to checking the oil level and oil temperature of each compressor, checking the main power supply voltage and current, and checking whether the set value of the chilled water supply temperature is appropriate. If there is a problem, make changes in time.

Series Modular Air-cooled Scroll Chiller

The cooling capacity of the series of modular air-cooled scroll chillers ranges from 7KW to 120KW. This series of units combine the characteristics of many other products, uses imported fully enclosed scroll compressors, supplemented by high-efficiency heat exchangers, and adopts a microcomputer controller to make the unit compact, reasonable in layout, and convenient to use and maintain. The user only needs to simply connect the pipes of the water supply system and the required power source, and then it can be put into operation. If you want to get more information about good quality air-cooled chillers, please contact us.

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