Hello! I've just completed the brazing process, tried to test with 12 bar argon and I notice that the pressure drops by 0.02 bar every hour. I used hvac foam to test the joints but I wasnt able to detect anything. At this point I am not sure the leak is in some joint or on the gauge. I am using blutooth Testo gauge without hoses so it shouldn't leak by any tangible amount.
Also, I wasnt able to pull a good vacuum, as I reached 700 micron but was back to 2000 micron in 30 minutes or so.
Any suggestion would be much appreciated!
Andrea
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