[FittedBuckle]

Hi everyone. I'm working on my 1983 Newell. Heating is done and now I'm moving onto the AC. This is a 40' RV with 3 mini air conditioners, one in front, one under the kitchen table, and one in the rear closet. Back one works, but the middle two need work. They dont seem to have any data plates but are rated 1-1.5 ton according to my father who is a HVAC guy. Split system. Capillary tube's. We're trying to find out what type of refrigerant these systems would have used without having to purchase an analyzer. Any help would be greatly appreciated.