Hi Alberto, you are using for that 1/3 compressor power an inner diameter of capillary, too thin and too long. For a 1/3 compressor, the correct thinner inner capillary measurement, which you can use, should not be less than 0.8 mm, millimeters of internal diameter, with a length of between 1.30 meters, bone 1 meter 30 centimeters, up to 1.68 m, bone 1 meter, 68 centimeters, maximum length for that internal capillary diameter. You can also use the 0.90 mm capillary, millimeters of internal diameter, with a total length of 2.40 m, bone 2 meters, with 40 centimeters. And finally, the 1.0 mm capillary, one millimeter in diameter inside, with a total length of 4 meters, only for that inner diameter of capillary. I will upload a table that is for applications, of EMBRACO brand compressors, but approximately they meet the same characteristics due to refrigeration capacities with the other types and brands of existing compressors such as yours. Luck. S @ lu2 friovega63.