Below the desktop high and low temperature damp heat test chamber are the specific steps.
First, you must first find the exit position of the capillary
The outlet position of the capillary of the high-low temperature damp heat test chamber is generally in the foam layer in the upper middle portion of the back of the tank. When replacing the desktop high-low temperature damp heat test chamber evaporator, it is necessary to dig the back insulation material and bury the connection pipe and the return pipe of the test box. When digging the insulation layer, dig up along the return pipe until the outlet of the capillary is dug. The capillaries of the original machine are generally installed in the return air pipe. There must be two tubes of Φ6 or Φ8 at the outlet of the capillary. The capillary is welded from the inlet of the original evaporator, connected to the inlet of the new evaporator, and then foamed and restored according to the conventional method.
For high and low temperature tanks inside the evaporator, do not rush to replace the evaporator (coil). If it is a micro-leakage, after reducing the various pipes, inject a small amount of refrigerant, start the compressor for ten minutes, carefully observe the position of the first frost in the freezing chamber, and mark it. If the leak is very fast, you can find a test box of the same brand model, observe the position of the first frosting in the power-on state, and then determine the exit position according to the position, because the internal piping of the same brand test box is not arranged. There will be too many discrepancies. In the first frosting area, use a utility knife to gently draw a "7" shaped mouth, take out the outlet of the capillary, and connect it to the inlet of the new evaporator. For the drawn hole, you can stick it with double tube glue. prison.
As we all know, the length and inner diameter of the capillary of the high and low temperature damp heat test chamber are related to the working efficiency of the whole machine. The choice of capillary length determines the cooling capacity. Different brands and different types of high and low temperature damp heat test chambers, the length and inner diameter of the capillary are different, can the high and low temperature damp heat test chamber be repaired by the capillary of the original machine without replacing the capillary?
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