Fixing a leak on a small copper pipe in the evaporator area of the Comfortmaker air conditioner. Well after applying the epoxy I evacuated the system to a vacuum and held it for 10 minutes and it survived. Then I added some Freon up to 150psi and tested the epoxy repair and it was good. Filled the system up to the right level and so far so good. Time will tell, but so far so good.
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