Quote:
Originally Posted by jimthe1st
I once removed, years ago, a suspect pressure switch and tried to get the new one in before all the refrigerant escaped. Gloves, but hands got to cold and I had to wait. Installed the new switch and recharged and the system and it still works find today.
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In that situation the oil likely still has some refrigerant boiling out of it. Very little air got into the system since it was out-gassing the entire time. In a situation where the hose connection breaks like the OP the system was open long enough to boil off all the refrigerant. Your situation was not ideal and most likely you would see an improvement with a new receiver dryer and good vacuum before a recharge. If it ain't broken don't fix it.