The production and maintenance personnel detected that the air conditioner and electric control were normal. It was suspected that the capillary in the refrigeration system was blocked by foreign matter, so the refrigerant was discharged, and the capillary was opened for inspection. At this point, the appearance of the compressor is still normal, and the maintenance personnel suspect that the compressor is abnormal, and the compressor is energized directly in this state. When the start-up operation is about 10 s, the compressor stops, and the casing has become larger. Appearance survey of the compressor (1) The two compressor casings have been swollen and deformed, the upper casing is obviously bulged upward, and the casing is free of cracks; the compressor technology (2) the outer casing of the two compressor casings has been partially charred; 3) A compressor glass terminal two terminals C, R have been thrown out, a large amount of black charred material is accumulated outside the upper casing.
Air conditioner production line operation detection indoor machine general purpose machine, no abnormality, air conditioning system outdoor unit, there is gas outflow at the glass terminal of the compressor, indicating low pressure pass; inflated from the process pipe F, no gas flows out at the glass terminal of the compressor, indicating the compressor The exit and the F section are not available. The joints between the compressor outlet and the F section were cut open, and it was found that the welded portion of the compressor exhaust pipe and the outdoor unit piping was completely blocked by the solder. All other parts were checked for no defects.
Directly cut the front and rear sections of the welding pipe of the compressor and the piping of the outdoor unit, and found that the welded joint was completely blocked by the solder. The other parts of the outdoor unit were checked for no defects. Internal condition of the compressor: (1) Many black charred materials are adhered to the outer surface of each component in the compressor machine; (2) The resistance value of the motor enameled wire is normal, and the cooperation between the stator and the casing is loose. The motor binding wire is blown, and the insulating wedge, the insulating paper, and the insulating film are in a sintered state. And the stator winding of the A compressor has been blown; (3) the thermal characteristics of the protector are normal, the movement of the movement is normal; (4) The compressor refrigeration oil is completely burned.
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