The compressor is the core of the high and low temperature test chamber, which consists of a single-phase motor and a compressor. Therefore, judging whether the compressor is good or bad needs to be detected from these two aspects.
First, the detection of motor performance
1. Winding open circuit detection: The motor running winding resistance (Rmc) is between 10 and 20 Ω, the starting winding resistance (Rsc) is between 30 and 50 Ω, and the resistance between the two winding ends is the sum of the two (Rms=Rmc+Rsc ).
2. Winding short circuit detection: There is a winding turn-to-turn short circuit and a short circuit between the winding and the winding.
3. Winding grounding detection;
4. Detection of startup performance;
5. Detection of running current.
Second, the detection of high and low temperature test chamber compressor
1. Detection of compressor efficiency, ie detection of suction and exhaust sealing performance: When the high and low temperature test chamber is inspected, if the compressor starts normally, the cooling effect after charging the refrigerant is poor, and when the refrigeration system is normal, it is necessary to detect Compression efficiency.
2. Detect the pumping performance of high and low temperature test chamber compressors.
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