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The importance of car cooling water cycle maintenance
Even if the overall running quality of the car cooling water circulation machine is high, if there is no maintenance and maintenance in the specified time, the car cooling water circulation machine may have different degrees of failure. Especially for many automotive cooling water circulation machines, after a long-term operation, a large scale problem will occur. If the scale cannot be effectively cleaned, after a long period of accumulation, the scale of the scale is continuously expanded, ...
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Causes of reduced heat transfer effect of vertical ultra-low temperature refrigerators
If the outer frost layer of the vertical ultra-low temperature refrigerator is too thick or excessively dusty, it may cause the external temperature of the equipment to be mostly lower than 0, resulting in low heat transfer efficiency of the evaporator. Because the vertical ultra-low temperature refrigerator has relatively high humidity, the moisture in the air is easy to frost on the surface of the evaporator, and even freezes, which affects the heat transfer effect of the evaporator. In ord...
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How to judge the quality of the pipeline for electroplating waste gas treatment?
Generally, when purchasing the electroplating waste gas treatment equipment, it is necessary to observe the appearance of the copper tube to judge. The first is to look at the color of the copper tube. According to the type of copper tube purchased, different colors are judged, such as a copper tube, and the red color of the general color is reddish. It is good copper. Brass tubes, generally lighter in color, are better. There is also a layer of zinc on the copper, some galvanized, and the co...
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High-pressure failure of stainless steel cryogenic refrigerator
At the high speed of the stainless steel cryogenic refrigerator compressor, the temperature rises and the compressor generates high air pressure, which causes the high voltage protection relay to operate. The discharge pressure of the compressor reflects the condensing pressure. The normal value should be 1.3~1. 7MPa, and the protection value of the Wuxi Guanya stainless steel cryogenic refrigerator is set to 2.1MPa. Then, if it is a long-term work, the compressor pressure is too high, which ...
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General high and low temperature integrated machine valve repair detailed description
The conventional high and low temperature integrated machine valve replaces the packing, and the main function of the packing is to prevent the working medium from leaking along the axial direction of the valve stem. In case of minor leakage, the packing gland can be tightened. If the leak cannot be eliminated, the packing should be replaced. When replacing, the valve stem must be screwed out to the end. Use the filler needle to pull out the old packing, then screw the prepared new packing in...
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Description of refrigeration principle in semiconductor wafer temperature control
In the operation of the semiconductor wafer temperature control refrigeration system, a state transition of a certain working fluid is used, and the necessary heat Q0 is extracted from the heat source of a lower temperature, and the heat Qk is sent to the heat source of the tropical heat through a storage process of the consumption power W. In this process, Qk = Q0 + W is taken from the conservation of energy. In order to achieve temperature control of semiconductor wafer temperature migratio...
View detailsCold and hot shock constant temperature and humidity test chamber operation steps
When selecting the appropriate model of the LNEYA hot and cold shock constant temperature and humidity test chamber, you need to pay attention to the operation and installation steps. The user needs to be well prepared for the installation work. The hot and cold shock constant temperature and humidity test chamber should be noted before use. The power supply voltage should be turned on. After the fan is started, open the door and select the required impact height. Then close the door and pres...
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Hybrid car battery test equipment cooling capacity description
Due to insufficient insulation thickness of the hybrid vehicle battery test equipment and pipeline or damage to the insulation layer, the loss of cooling capacity is increased, which affects the cooling effect. In the operation of the hybrid vehicle battery test equipment, once the outer surface of the insulation layer is found to have wet or frosted parts, it means that the thickness of the insulation material is insufficient or has been damp, and the insulation material should be added or r...
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Protection device details of circulating fluid temperature control device
The circulating pump overload protection function is to cut off the main power of the circulating pump when the circulating liquid temperature adjustment device is too large. Press the green button when resetting; the red button is the stop button, which is used during the test. When frequent protection, please check whether the voltage is under voltage (undervoltage is less than 15%, the power protector is not working), undervoltage is increased into current, forming protection. At this time...
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LNEYA high and low temperature heating refrigerator maintenance instructions
High and low temperature heating refrigerators use circulating water to replace circulating water regularly every month. If heat transfer oil is used, heat transfer oil should be replaced periodically every six months to one year. When the high and low temperature heating refrigerator is used for more than 150 degrees for a long time, check the heat transfer oil every three to six months, and decide whether to replace it according to the actual situation. When replacing the circulating oil, d...
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