Hello how are you. I have a metalford agricultural spraying machine that we call here mosquito. It is a cabin very tight by chemicals and the air ac is the life of the driver. But the air does not cool. According to the driver, the compressor runs but does not cool. I was looking and did not find the indicator plate in the compressor or in the radiator. And I need to know what gas it carries. There is some trick to discover what gas it carries. In order to buy it because I am 200 km from where I buy it and I have to ask for it and I don't know which one to ask. Thank you. Watching the national team go up 20 uruguay goes Colombia. Let's go uruguay