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Carver 560 Bridge AC Water Flow Problem

Discussion in 'Carver Yacht' started by Txcruiser, Jul 24, 2014.

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  1. Txcruiser, Jul 24, 2014
    #1
    Txcruiser

    Txcruiser New Member

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    Jul 24, 2014
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    Location:
    Texas
    The air con unit on the flybridge keeps shutting down due to low water flow. I have had the water lines flushed with some short term improvement. The boat has one pump with a discharge manifold going to 3 units at the salon level and the one on the flybridge. The lower units operate fine. Looking for solutions and experience of other Carver owners. My boat is a 2007 model. Thanks,
  2. Monepit, Jul 24, 2014
    #2
    Monepit

    Monepit Member

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    Are you in salt water?
  3. Txcruiser, Jul 24, 2014
    #3
    Txcruiser

    Txcruiser New Member

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    Location:
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    Yes - US East and Gulf coast cruising, plus planned Bahamas.
  4. Monepit, Jul 24, 2014
    #4
    Monepit

    Monepit Member

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    The heat exchanger on the unit may be clogged. Common on salt water. You can check by removing the outlet hose and putting a short hose to a bucket and turn the unit on to see if the water is flowing.
  5. Capt Ralph, Jul 24, 2014
    #5
    Capt Ralph

    Capt Ralph Senior Member

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    What pump do you have? The bronze impeller may have dissolved by now. In a high silt area, a synthetic impeller may have some ware also. I hope a medium pressure back flow has already been done?
  6. Capt J, Jul 24, 2014
    #6
    Capt J

    Capt J Senior Member

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    I would check the water flow on the discharge on the unit. Also what size water pump do you have, it might be too small to pump adequate volume for that unit to get enough flow, mounted so high. If you have adequate flow to the unit, but not coming out I'd flush the salter heat exchanger with trac descaler.

    Also what size is the main branch of your water T and what size are the lines coming off of it. The Main branch should be at least one size larger than the T lines.