Air-cooled chillers, as a kind of more efficient refrigeration equipment in chiller products, are widely used in the domestic industrial market and become necessary equipment for many industrial production.
At the same time, although the air-cooled chiller is equipped with multiple protection devices, these are all to prevent the failure 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 testing 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) Check the compressor regularly
The compressor is the "heart" of the chiller, and its quality directly affects the stability of the chiller. The necessary acceptance test for the chiller should be carried out in accordance with the principles of air tightness test first, vacuum test second, sub-item test first, and complete machine test second.
3) Regular cleaning
In addition to checking the technical performance of the chiller, it is also necessary to protect the clean appearance of the chiller and the cleanliness of the work site. When the air-cooled chiller is running for 6 months, the entire system, such as pipes, filters, condensers, fans, etc., must be cleaned, especially the 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, too dirty radiator, bad air to clean the radiator, improve the ventilation conditions. , Replace the high-pressure engine.
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 operating normally, the high pressure is 11-17kg, and the low pressure is 3-5kg. In 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. Therefore, it is very important to check the operation of air-cooled chillers. In addition to the main inspections above, it is also necessary to check the oil level and oil temperature of each compressor, check the main power supply voltage and current, and check whether the set value of the chilled water supply temperature is appropriate. If there is a problem, make changes in time.
H.Stars has been a HVACR manufacturer for more than 26 years. Customized high efficient chiller / heat pump provide -50℃ to 90℃ solution to the customer. If you are interested in our air-cooled chillers, you can contact us. Email: maychow@hstars.com.cn
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