hello I have a cold air heat bgh silen air mod bse30ch of 3000 cal / h power 61270w and understanding of 6.1 amp. with refrigerant r22. the intale ise the vacuum is more than two meters away each unit. I measured the low price and it marked me 30 and did not cool. I add more gas until I reach 60 pounds as the seller recommends and I begin to cool but little. about 18 degrees at the exit of the evaporator unit. being at its maximum power. and note that the low-pressure tube (which is 1/2 inch was all frozen in its path until it reaches the coupling with the evaporator unit. Someone knows what the problem is that I have and what the solution would be since a thousand thanks

Good, you should leave it running for a while and look at what pressure is established, since you can get to have excess fluid, and being an old equipment, they sometimes take time to achieve the desired compression. What the colleague says is also correct, I clarify it so that you do not disassemble anything before trying that

I add in addition to what the colleagues who review filters and tangential say since an excess of dirt produces the same problem

Thanks to all who answered my question I tell you that I had the strangled low spout at the outlet of the evaporated from already milll thanks to all problem solved