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Old 02-26-2015, 08:01 AM   #2
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Join Date: Jan 2005
Location: Sarasota, FL
Age: 63
Posts: 3,486
Re: Heat exchanger question

I have not on a VP but most are pretty straight forward. Take it apart and see how the Oring is set and clean it out, and put it back together. I take the tube bundle out and fill a 5 gallon bucket with water and muratic acid. About 1/2 a gallon acid to 3 gallons of water. I put in the tube bundle and all tubes should bubble, if not take a bronze brazing rod and poke and clean it out. Let it bubble for 10 minutes and take it out and put in other end. Rinse well with a hose shooting it in all holes, making sure they are clear. Make sure you always have a good zinc too.
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