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Touch method display cooler diagnosis fault
author: supermarket refrigerated showcase category: commercial refrigeration Views: 522Time: 2016-08-22
touch method display cooler diagnosis fault
① Touch the condenser, compressor exhaust pipe, return pipe, capillary tube, water box and other diagnostic faults.
②The temperature of the condenser is overheated locally, and other parts are not hot, which is because the refrigeration system is not well evacuated; the hot area is small but the temperature changes uniformly, which is less cooling; the noise is significantly reduced when the condenser is touched, and the condenser is not tightly fixed.
(3) Touch the gas pipe, fill the display cooler with refrigerant, test the machine for 2 hours to 3 hours, then unplug the power plug for 5 minutes-10 minutes, then plug in the power supply for cooling, if the compressor returns to the air (low pressure) pipe 5 Seconds-10 seconds, frosting occurs, 20 seconds to 30 seconds, and then melted away, indicating that the refrigerant charged is moderate: if the return pipe does not frost, it means that the amount of refrigerant charged is too small.
④ Touch the capillary, if the noise drops significantly, it is capillary resonance.
⑤ Touch the water box, if the noise is significantly reduced, the water box is not fixed properly.
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