Air conditioning leak

Friends a year ago or so, the air conditioner was gone, but after a few days I went to check it out, whatever it was normal after 2 weeks later, I went to control it, but after everything went normal, I went through the same thing again 1 week ago. started, I went from new to master, checked, capillary knife, gas was reduced, said .... What should I do, the master did not make very reasonable explanation about this leg, I would be glad if you help

I think you should take it to someone who understands it well .. If there is a leak, put as much gas as you want and it will escape again. That leak must be found ..

As far as I know, they fill a different gas into it, close the ladle, then drain and press the air conditioner gas.