scythe wrote:With the failed section of your condenser i think it may be from the flux used during construction.
When i pulled my RC to bits i noticed that it was fairly corroded at the plate to pipe join, and i hadn't even finished building it by that point, might have sat for 9months or more waiting to be finished.
Make sure you neutralise the flux by rinsing it out with water atleast after building.
I always rinse out anything I make and then put into a citric acid wash for about 36 hours for the final cleaning of the copper.
I've disconnected from the mains and run on tank water so the water is very soft and just slightly lower than a pH of 7.
I use 2% plumbers brazing rod so there's no flux to stay on the surface. I'm fairly sure that it was the sulphides in the wine that caused the problem.