Hello friends good night I have a doubt, I collected the gas to an air in the external unit, and I took off the evaporator because every time the gas was applied, I slowly threw it away, I washed it, I put pressure on it and it did not throw me away, Then when I went to connect the discharge, the flare broke, I had to weld, when I released the refrigerant gas that had the external unit was at 30 psi, I applied until it reached 60, and cooled but I feel it should cool more, and the manometer needle, fluctuates between 62 and 60, why is this? Thanks a lot