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    How to distinguish original refrigeration compressors from second-hand compressors

    How to distinguish original refrigeration compressors from second-hand compressors How to distinguish the original refrigeration compressor from the second-hand refrigeration compressor? In fact, this is the same as the RMB identification method, and it needs some professional knowledge. 　　Why is the original refrigeration compressor not guaranteed? This question is actually a good question. Isn't the product guaranteed? If it is expensive, why should it be sold expensively and the warranty? 　　 1. The production cost of the original machine can not be compared with the second-hand goods on the market, refurbished, off-line machine. 　　 2. According to the terms of the compressor warranty, the original compressor is basically open cylinder inspection warranty. There are only a few brands on the market that have unconditional warranty! This kind of warranty method is basically a manufacturer to pay some tuition for some novice buyers. (If the size is too large, the size must be small. If the heat dissipation is not good, the compressor must be returned. If the compressor is protected, it must be returned. If you buy the wrong one, you should also return it! Bad compressors should also be retired, lack of phases, and clogging should also be retired. There is no common knowledge of installation and operation. Orders are also made to repair repairs, etc.) The reason for this type of warranty law is convenient for many buyers (will not operate) but also gives Many buyers bring harm, and it is very likely that they bought a repair machine of poor quality when buying a new product! (Returned to the factory) caused a discount on the brand and reduced quality! 　　 3. The above description is clear to many buyers. The new compressor joint venture brand compressors are not guaranteed for sale in the market. If the warranty price is definitely more than doubled. Because such manufacturers have strong technology, advanced equipment, years of production experience, and strict quality inspections of daily production capacity. There is no deviation in production quality! So there are several reasons for not guarantee! 　　4. The basic operations in refrigeration maintenance are electricians, mechanics, etc., often there are some people who have experience in technology but not at all, and few of them are actually certified to work. The most basic analysis of the refrigeration system is indispensable for the following 4 items: A high and low pressure (compression ratio) B cold coal charge C operating current D compressor superheat / 1 of the above 4 items has excessive deviation, which will cause compressor loss! Using the original brand new machine, the operation can achieve the above points, and it will take a few years to use it if it is broken! 5. Compressor distinction: First, if you buy 2 identical machines, please use the gauge to measure the winding resistance. If it is a new machine, you must be consistent! Second, if you buy one machine, please smell the smell of the machine when you test the pressure. Not very strong or use an open flame to test the exhaust port for discoloration (the lighter's fire should be yellow, the discoloration indicates that it has been used, and it has been filled with fluorine, even if it can not be washed with gasoline in the machine)

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    Causes of refrigeration compressor coil burnout and cleaning method after burnout

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    06/14/2020

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