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  1. #1
    Join Date
    Apr 2004
    Location
    Winnipeg,MB,Canada
    Posts
    93
    I've been wondering, does anyone out there acid clean condensers themselves, or do you leave that to water treatment companies? If so, how do you, what type of pump do you use? If not, why not? What about these heat pumps? I'm looking for any input, thanks.

  2. #2
    Join Date
    Apr 2001
    Posts
    327
    I do mine myself. I have a little submersible acid pump with washing machine hose for small condensors and a submersible 1 1/4" sump pump for big condensors.They both work great. I also hang a bolt in the solution, when copper appears on the bolt then I stop.

  3. #3
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,646
    We do them ourselves

  4. #4
    Join Date
    Oct 2002
    Posts
    970
    Originally posted by cardinal ac
    I do mine myself. I have a little submersible acid pump with washing machine hose for small condensors and a submersible 1 1/4" sump pump for big condensors.They both work great. I also hang a bolt in the solution, when copper appears on the bolt then I stop.
    Copper on the bolt? What's does that indicate?
    I work with the Chiller Whisperer...

  5. #5
    Join Date
    Jun 2001
    Location
    San Diego, CA
    Posts
    1,149
    2 dissimilar metals in an electrolytic solution - one metal an anode, one a cathode. Metal from the condensor is carried by the solution back into the bucket where it collects on the anode (steel bolt) - a good indication it's time to stop.

    don't forget to rinse when done or that solution will continue to work eating away the fins.

  6. #6
    Join Date
    Dec 2003
    Location
    Nevada
    Posts
    1,815
    We built a cart with a vat on it. Wheel it into the mech room and hook er up and turn on the pump. We can test the acid in the vat and tell if it is still effective that way. I think we have a thrush pump with a brass impeller. Nothing real fancy just some properly rated hoses and fittings a few valves a 8 gal vat and a pump.
    Quote
    “Engineers like to solve problems. If there are no problems handily available, they will create their own." Scott Adams

    "We can't solve problems by using the same kind of thinking we used when we created them."
    Albert Einstein

  7. #7
    Join Date
    Jan 2002
    Posts
    1,895
    A regular steel bolt ? thats a good idea need to try it on the next one I do.

  8. #8
    Join Date
    Dec 2003
    Location
    Kenilworth New Jersey
    Posts
    230
    I`ve never seen a water treatment co do acid cleaning...We do the same as hvacbear. Mount an old bromide barrel to a hand truck with a pool filter type pump below it along with associated pvc piping (return from the condenser into the top of the barrel), boiler drains to connect hoses. As for the bolt use the litmus paper that comes with the chemical and you`re done when the solution stops weakening. Neutraize with baking soda, rinse with fresh water,drop heads and punch tubes.

  9. #9
    Join Date
    Apr 2004
    Location
    Winnipeg,MB,Canada
    Posts
    93
    Thanks for the info, I know it's not a big deal, for some reason manager is using personal safety issues as way out. I think he doesn't want to have to do any more work. I think that we could do a better job than I've seen.

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