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Thread: Mermaid AC needs priming

  1. #1
    Junior Member
    Join Date
    Jul 2015

    Mermaid AC needs priming

    The previous owner of my new to me 79 Bluewater tells me that the Mermaid AC loses prime. How do I prime that unit? When I turn the unit on, it spits a little bit of water out the side of the boat, but I am sure its no where near the amount that it is supposed to be running through it.
    I cleaned out the strainer, made little difference.

  2. #2
    Super Moderator OLD HOUSEBOATER's Avatar
    Join Date
    Oct 2002
    Tavares Florida
    take the out put hose loose on the pump until it primes.
    The fries are cold so we gave you extra.

  3. #3
    Senior Member Stmbtwle's Avatar
    Join Date
    Apr 2003
    Ruskin, Florida
    I have the same issue. I installed a tee between the pump and the AC, with another hose on it and a valve where I can reach it. Open the valve for a few seconds to bleed the air and it's good to go.

    Virtually any time I run the engine in reverse (such as docking), the prop pushes enough air under the boat to cause the problem.
    Last edited by Stmbtwle; 08-02-2015 at 06:19 PM.
    She's a tired old barge but she's paid for!

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