The relation of refrigerant and the test chamber

usually by investigating transpiration pressure and suction tube, transpiration of frosting condition to throttle valve refrigerant flow rate is appropriate. Throttle valve block is one of the important elements affect the refrigerant flow, the leading element of throttle valve block of ice wall and dirty wall.

technicians believe that high and low temperature experiment box in the compressor dry ice wall because drier Clinton, refrigerant contained water, flowing through the throttle valve, the temperature fell to below 0 ℃, refrigerant water in the ice and block the throttle hole; Dirty plugging because throttle valve import filter have accumulated more dirt, refrigerant circulation impeded, formation of blocking.

system in the lack of refrigeration dose, refrigeration to lack

the lack of high and low temperature test box refrigerant circulation first, there are two elements, one is the lack of refrigerant filling quantity, at the moment, just add plenty of refrigerants. Another factor is that the system refrigerant leakage is more, in this situation, should first find funnelled, key points of view various pipelines, valves, joints, find out leakage parts after repair, filling the adequate refrigerant again.

high and low temperature test box, low efficiency of the compressor, refrigerating capacity not satisfied with the overall load request

compressor because of long time work, cylinder liner and piston ring parts because of serious wear and tear, such as cooperation space increases, the seal function will reduce accordingly, decreases in the coefficient of the gas compressor refrigerating capacity will be reduced. When the heat load capacity is less than warehouse, lower temperature will lead to slow. By investigating the compressor suction, exhaust pressure discriminant compressor refrigeration can roughly. If the compressor refrigeration can reduce, the commonly used method is to replace the compressor cylinder, piston ring and if the replacement still cannot work, should consider to other aspects of the elements, and machine maintenance, troubleshooting.

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