Capillary Selection
Great, many data that clarify a lot, I had thought that depending on the evaporator was the question, but for what you explain it is something like a general rule, respect the specifications that the manufacturer recommends to achieve the best possible efficiency of the refrigerant, always respecting the exact load
So if so, I have an error in a refrigerator that I try to repair, I put capillary 0.8 mm and are 2.25 m long and according to what you tell me is too short, engine 1/5 + Could you lower the amount of coolant and get more or less the same evaporation at -30 degrees?
Or do I have no choice but to disassemble that capillary and place the corresponding one?
If you remove refrigerant, the evaporation pressure will decrease and with it the evaporation temperature will also, however, the evaporator will work without the amount of liquid that it should have that is not the idea, and the reheating value of the refrigerant gas will be higher and you will notice that the evaporator will not be completely frosty because it lacks refrigerant, but I recommend that you measure the temperature inside the refrigerator, if it is working well then you could leave the 2.25 meters of capillary that you placed without adding , and then when you repair
another refrigerator of the same characteristics, then if I recommend you place it longer, so that the evaporation pressure drops to their respective values; It should be mentioned that when the capillary length is correct, in addition to the refrigerator having its refrigerant amount similar to that specified by the manufacturer, after it cools properly achieving temperatures in the freezer below -18 ° C, the pressure of evaporation will tend to be at 0 psi, and even in vacuum, between 3 and 4 in. of mercury, which is not because it lacks refrigerant, but is evaporating around
Perfect, lots of data and everything is very clear to me.
The refrigerator was walking two days and barely reached -13.5 degrees in the freezer, its engine cuts by thermal protection every 8 minutes, I clarify that in this occasion the load was not made by weight, I still do not have the tool until within a few days , since I cannot give it to the point and in order not to delay the work anymore I decided to acquire it.
I will try first to put the capillary attached to the return pipe by means of pressure so that the cold that returns helps the condensation of the refrigerant.
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