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display cases Defrosting and display principle

display cases Defrosting principle compressor has been running for 7 hours, CPU will output defrost command from pin 21, and pin 2 of IC4 will be amplified and output by clever pin, display cases control relay RY2 sucks Close, turn on the defrost circuit, the defrost heater will generate heat and defrost. At the same time, the CPU detects the defrosting situation through the 10-pin. Because the ...

display freezerTIME：2016-08-22
Commercial refrigeration buzzer and door warning

commercial refrigeration buzzer and door warning CPU pin 22 is a commercial refrigeration buzzer. The buzzer power supply is 12V, the buzzer power supply is 12V, and the buzzer frequency is 3.125kHZ. The 19-pin of the CPU is the door warning control terminal of the refrigerator compartment. When the refrigerator compartment is opened, the D8 input circuit of the photocoupler is connected due to ...

walk-in display coolersTIME：2016-08-22
display cooler air-cooled condenser

display cooler air-cooled condenser In an air-cooled condenser, the heat released by the condensation of the display cooler refrigerant is taken away by the air. Air-cooled condensers are mostly used in small Freon refrigeration devices, such as electric display cooler, supermarket refrigerated showcase, window air conditioners, automobiles and railway passenger cars, refrigerated cars and other...

commercial refrigerationTIME：2016-08-22
The evaporator

in commercial refrigeration The evaporator in commercial refrigeration is another heat exchange device in the commercial refrigeration refrigeration system. It is a heat exchanger that absorbs heat by refrigerant at low temperatures. In the evaporator, the refrigerant liquid boils at a lower temperature, transforms into vapor, and absorbs the heat of the object or medium to be cooled. Therefore,...

commercial refrigerationTIME：2016-08-22
Commercial refrigeration failure self-diagnosis results and troubleshooting

commercial refrigeration failure self-diagnosis results and troubleshooting (1) The LED lights on the commercial refrigeration display board are all off. Open the refrigerator door, observe that the lights are off, and check the power supply circuit. The failure rate of transformer, insurance, and varistor is high. Check whether the connection between the display board and the main control board...

display freezerTIME：2016-08-22
Shell and tube dry commercial refrigeration evaporator

commercial refrigeration Shell and tube dry evaporator It is actually a shell and tube horizontal evaporator that evaporates in the tube. The filling amount of the refrigerant liquid is small, which is 35%-40% of the internal volume of the tube group; and the commercial refrigeration refrigerant has no free liquid surface during the vaporization process, so it is called a thousand-type evaporato...

display refrigeratorTIME：2016-08-22
refrigerated showcase BCD-27AK4 computerized display cooler

refrigerated showcase BCD-27AK4 computerized display cooler refrigerated showcase BCD-27AK4 computerized display cooler structure and working principle, refrigerated showcase BCD-276AK4 five-temperature four-control computer display cooler structure. Its characteristics are: ① adopts computer control; ② thermistor temperature sensing; ③ liquid crystal display; ④ refrigeration, multi-fun...

display freezerTIME：2016-08-22
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display freezerTIME：2016-08-22
commercial refrigeration straight tube evaporator

commercial refrigeration straight tube evaporator. The straight tube evaporator is used in the ammonia refrigeration device. In order to improve the heat transfer effect of the straight tube evaporator, the commercial refrigeration is equipped with a mixer. Since the upper part of the vertical tube evaporator is opened, it is convenient for the operator to observe and maintain. The refrigerant ha...

display refrigeratorTIME：2016-08-22
The commercial refrigeration of cooling air evaporator

The commercial refrigeration of cooling air evaporator The evaporator of cooling air uses refrigerant to evaporate in the tube to directly cool the air. There are two types of evaporators: cooling coil and air cooler. 1) The refrigerant in the evaporator cooled by natural convection evaporates in the tube, and the flow of air outside the tube is natural convection. The cooling coil is mostly co...

display refrigeratorTIME：2016-08-22

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