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Compressor exhaust strength diagnosis commercial refrigeration failure
author: supermarket refrigerated showcase category: commercial refrigeration Views: 506Time: 2016-08-22
Compressor exhaust strength diagnosis commercial refrigeration failure
Compressor exhaust strength diagnosis commercial refrigeration failures are only used for suspected compressors with no exhaust or poor exhaust. After opening the compressor process pipe port to vent, weld open the compressor exhaust pipe port (thin), plug in the commercial refrigeration power supply to run the compressor, observe and test the compressor high pressure pipe port exhaust capacity. Normally, there should be a sound of gas exhaust, which cannot be blocked with your fingers: if there is no exhaust sound, it is easy to block the exhaust pipe opening with your fingers, because the compressor has lost its exhaust function; if the exhaust sound is small, use your hand to block the exhaust The tracheal port is slightly strenuous but can be blocked, which is due to the deterioration of the compressor discharge performance.
Suppress the system and diagnose faults. After venting the refrigeration pipeline, fill the refrigeration pipeline with an appropriate amount of gas to maintain a certain pressure in the refrigeration pipeline, and apply detergent or soapy water to the suspected leaking part for leak detection. The bubble is a leaking spot there. Then, keep the pressure for 24 hours and check the pressure gauge readings. Normally, the commercial refrigeration pressure gauge readings remain unchanged or the drop value is less than 0.1MPao for maintenance. [Note] When it is confirmed that the fault is in the high-pressure pipeline or the low-pressure pipeline, the specific components can be suppressed to further confirm the faulty components and blow through the system to diagnose the fault blow through method, that is, about 2 meters from the nozzle of the filter dryer. Cut the capillary tube and blow in nitrogen from the compressor process nozzle. Normally, the two nozzles of the cut capillary tube have uniform and large amounts of gas blowing out, which may be encountered during actual maintenance.
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