First of all thank you very much in advance ladies and gentlemen of this forum ... my case is the following ... A friend of mine has a 6-door counter refrigerator in her bakery where a technician sold a used 1/2 hp 115 volt copeland compressor model JRC4-0050-PAA a while ago, since I bought the fridge without compressor, But you don't know what type of refrigerant you use. I learned this great prophecy in a self-taught way and I am still rigorously researching. I searched online for the interpretation of its nomenclature and I could not find it, and I get the impression that it is not found because I see that this model is a bit old, and it gives me the hunch that this compressor uses R12. Another important detail of my efforts to discover what Freon uses, to change the oil, since apart from being used, Mr. He sold it with the exposed pipe, and since then my friend, for not knowing, kept it that way for several months. I already did his respective checkups and the compressor works very well ... I hope you can help me. ah! and the capillary I buy is 0.49 mlm. thank you!

Thank you very much, Alejandro!