On Apr 11, 4:49*pm, Evan wrote:
On Apr 11, 10:38*am, Matt wrote:

I have a heat exchanger made up of stainless steel plates brazed
together with copper filler. *I have collected some crud inside the
exchanger that I can't for the life of me get out. *I was thinking of
just placing the heat exchanger on my propane turkey fryer on low for
an hour or so to try to incinerate the crud inside and turn it into
ash. *However, I don't want to melt the copper brazing and make the
unit useless. *I have little experience with brazing, and never with
copper. *Does anyone know if a propane flame will heat the brazing to
the point of melting?

Thanks.

Learn how to clean HVAC components like a professional...

You are either using the wrong cleaner, the wrong cleaning tools
OR not repeating the process enough times...

If you have removed the component from its normally installed
location you could consider attempting to clean it in the dishwasher
if it will fit, or pressure washing it...

~~ Evan

I actually use this device for homebrewing, so it is already off the
intended use. I could use caustic soda, but would prefer to do this
without chemicals. I doubt that the flame is really 3700 degrees, as
that would likely melt the stainless steel as well, and I know that's
not the case.

Anyone else?