The main system of the high and low temperature test box is the low temperature refrigeration system, and the most important and most valuable configuration of the refrigeration system is the compressor. There are many brands of compressors, such as the French Taikang brand, the German Bisel brand, the German Coinwheel brand or other domestic brands. Because of the large number of brands, there are comparisons and concerns. Individuals feel that whether they are imported or domestic compressors, they must look at the stability of their performance to evaluate whether it is good or bad. Imports have also been used for a long period of time. Domestically, they have been used very stably and have a low failure rate. Therefore, everything is not absolute, let alone a compressor. Today, Aipei Technology teaches us to judge the quality of the compressor from the following aspects. First: Learn to recognize the difference between a brand-new compressor and a used compressor. Many unscrupulous merchants have to buy or recycle some second-hand compressors for cost saving. Then they sell the new high- and low-temperature test boxes at a high price to customers. This not only results in a cost penalty. In addition, the refrigeration systems and compressors that are used in the future have a great potential for failures and reduced lifetimes. So how does a brand new compressor identify it? Generally, the appearance of the new compressor is relatively bright, and the color is bright, the label is clear, and the welding port of the copper tube is directly welded one time, there is no old welding marks, if the second-hand compressor body color looks gloomy, Moreover, the copper pipe joints have been repeatedly polished or overlapped and welded several times. Second: Beware of manufacturers using domestically-made compressors to impersonate imported brand compressors. Some companies specify and tell customers that they are using imported brands of compressors for refrigeration, including other accessories, etc., in order to make equipment profitable. And so on... when actually thinking that customers are unprofessional in production, they often use the homemade brands to pretend to be tampered with. Therefore, besides being wary of the first item, the customer must also pay attention to the engineer's acceptance when carrying out high-temperature and low-temperature test cases. The back cover of the device housing is opened to check the compressor brand. Generally, the compressor body of a good brand has its model number and brand stamp, and it also has a parameter list to note the factory number, model number, horse size, true and false. Identification code, etc., and then to the brand compressor website to query one by one comparison, the so-called real gold is not afraid of the fire, there will always be loopholes to be caught, to see if everyone has not paid attention to it. And to find our connoisseurs can immediately see if it is true or not. Third: We can also look at the comprehensive performance and performance stability to judge whether it is good or bad. The normal compressor start-up noise is very small, less than or equal to 60 decibels or less, if the compressor noise is greater than 80 decibels and is louder than the compressor noise of other equipment, if it is not second-hand or domestically made, it is certainly possible to malfunction. In addition, when the high and low temperature experiment box is running, low-temperature refrigeration is very slow. If you feel it by touching the compressor body with your hand, you may find it hot. It may also be a problem, if you find the above problems remember to shut down in a timely manner and notify the professional manufacturer to check and repair, do not wait for it to completely replace the compressor after the failure. The above is the identification of the quality of the refrigeration core configuration compressor provided by Aipei Testing Equipment Co., Ltd. of Dongguan City. In addition to the compressor used in high and low temperature test boxes, other test equipment such as constant temperature and humidity box, constant temperature and humidity, Cold and heat shock boxes, high and low temperature shock boxes, xenon lamp test boxes and constant temperature and humidity test chambers are also often used to cool compressors, so the compressors of these test equipment can also refer to the above methods or contact our technical support staff. Single Row Cylindrical Roller Bearing Cylindrical Roller Bearing,Single Row Cylindrical Roller Bearing,Sealed Cylindrical Roller Bearings LUOYANG AUTO BEARING CO.,LTD , https://www.ballbearing.nl