压缩机故障的判断及处理（Fault diagnosis and treatment of compressor）.doc

压缩机故障的判断及处理（Fault diagnosis and treatment of compressor） Fault diagnosis and treatment of compressor. 1. how to identify 3 terminals on a fully enclosed compressor housing? The operating terminal (R), the start end (S), the common terminal (C), the resistance between RS is greater than SC, the resistance is greater than the resistance between RC. The resistance between RS is equal to the resistance between SC and RC. The above laws can be used to discriminate. It should be noted that the resistance value of the terminals of the three-phase compressor is equal. 2., how to determine the compressor motor winding short circuit? The R * 1 gear is selected by the multimeter, and the resistance value of the compressor motor winding C-R or C-S two points is measured after zeroing. If the measured winding resistance is less than the normal value, it can be judged that the winding is short circuited. For three-phase motor, respectively 2 3 wiring terminal of two pen, 3 times if the measured resistance is consistent, that if there are 2 good winding; the measured resistance is infinite, that there is a group of winding circuit; if the 3 test are infinite, that there are at least two winding circuit; if the 3 measurements in 2 the measured resistance was smaller than another test, indicates that there is a short circuit. 3. how to judge the compressor motor collision shell to the ground? The compressor motor is touch shell internal wiring through winding insulation damage and compressor shell collision, the formation of short circuit. This fault will cause the fuse to blow up and the compressor motor will not run. Check the touch shell to the ground, also can use multimeter resistance. The first zero, then take a pen and a public point close to the jail, the other probe on tight process of compressor tube exposed metal parts, or shell plate paint out a small measure. If the resistance value is very small, the winding or the internal wiring can be judged. 4. how to judge the com