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40728SV: [Imperial-Club] Re: Refrigerant leak detection

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  • Narve Nordanger
    Nov 9, 2013
    • 0 Attachment

      I once had a ship refrigeration mechanic check the leaking system of one of my cars, where despite hundreds spent in shops no-one had found the two-weeks-to-empty leak previously. He filled up the system with carbon dioxide gas and raised the pressure 50% above normal before applying a dishwasher type soap solution to all tubing surface and especially fittings. After 10 minutes he had located the leak, it almost looked to easy but apparently was a common practice on the big systems he usually worked on. Anyone else having experience with this method?


      Narve N

      In Norway


      Fra: Imperial-Club@yahoogroups.com [mailto:Imperial-Club@yahoogroups.com] På vegne av Warren White
      Sendt: 9. november 2013 21:46
      Til: Imperial-Club@yahoogroups.com
      Emne: RE: [Imperial-Club] Re: Alternative refrigerant response



      What you called a “sniffer”, I called a “gas leak detector”. I did and at least two shops did it. The pain continued.


      From: Imperial-Club@yahoogroups.com [mailto:Imperial-Club@yahoogroups.com] On Behalf Of John T Harvey
      Sent: Saturday, November 09, 2013 1:59 PM
      To: Imperial-Club@yahoogroups.com
      Subject: Re: [Imperial-Club] Re: Alternative refrigerant response

      I don't know if your refrigeration shop used a tool we used to call a "sniffer". It is able to detect small concentrations of leaking refrigerant especially from places you can't see.



      From: Warren White <warren.houston@...>
      To: Imperial-Club@yahoogroups.com
      Sent: Saturday, November 9, 2013 12:04 PM
      Subject: RE: [Imperial-Club] Re: Alternative refrigerant response


      Yes, the hydrocarbon refrigerant can be used with a dye. Yes, I have tried
      to find my leak using dye. Yes, the dye showed some leaks, which were
      repaired (mostly minor). No, the use of dye did not locate my elusive 2
      week leak. And the AC repair shops did the best they could, using whatever
      savvy they had, but in the end I was left with a 2 week duration leak. No
      refunds for best efforts.

      I have also tried using a gas leak detector with no useful results.

      Given the way the AC unit is installed in the trunk of my '56 sedan, it is
      possible that there is a leak that the dye might have shown if it were
      possible to see behind the evaporator coil. I can't do that.

      This year, I bought a complete trunk AC unit that looks to be in good
      condition. My plan is to leak test this unit out of the car. If it holds
      pressure for a goodly time, I'll swap it with my current unit. By I, I mean
      I will have a shop do this. I can't manhandle that unit by myself any more.
      Too old and puny.

      I have one more trick to try before going that route. I bought a
      refrigerant AC stop leak that you inject into the system. It's worth a try.
      See http://www.uview.com/index.cfm?pagepath=Products/LeakGuard%E2%84%A2_A/ .


      '56 Sedan (with AC)

      From: Imperial-Club@yahoogroups.com [mailto:Imperial-Club@yahoogroups.com]
      On Behalf Of Marc Miesch
      Sent: Saturday, November 09, 2013 11:34 AM
      To: Imperial-Club@yahoogroups.com
      Subject: [Imperial-Club] Re: Alternative refrigerant response

      Is dye compatible with hydrocarbons? Did you try putting dye in your system
      to find the leak ?

      Just curious,


      Spokane Wa.

      62 Lebaron

      [Non-text portions of this message have been removed]

      [Non-text portions of this message have been removed]

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