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Head tank discharge pump and operational details

Discussion in 'Technical Discussion' started by whiskywizard, Oct 26, 2009.

  1. whiskywizard, Oct 26, 2009
    #1
    whiskywizard

    whiskywizard New Member

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    2002 Tiara 4000 Express.

    The Tiara manual states it is not equipped to discharge sewage overboard (when off-shore of course). However there IS a diaphragm pump in the compartment beneath the trunk and it looks like a head tank discharge pump to me. There is no switch for that pump (that I can find).

    I need some of the coastal saltwater folks to enlighten me. Is that pump for discharging the head tank? Where are the controls? Any idea what it would take to connect it?

    Thanks
  2. Capt J, Oct 26, 2009
    #2
    Capt J

    Capt J Senior Member

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    What on earth is a trunk on a yacht? It might very well be a macerator pump to pump sewage overboard. It probably was dealer installed. It might just run off of a macerator breaker on the breaker panel.
  3. Capt Bill11, Oct 26, 2009
    #3
    Capt Bill11

    Capt Bill11 Senior Member

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    Do you have VacuFlush heads? It could be the vacuum pump for them/it?
  4. whiskywizard, Oct 27, 2009
    #4
    whiskywizard

    whiskywizard New Member

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    Tiara owners will know what the trunk is. It is an aft storage compartment, that opens out onto the swim platform. Inside the trunk is a hatch to a systems space below waterline, hard up to the transom.

    I'll clarify my o.p., there is no circuit breaker on the main AC/DC panel, no breaker on the engine room DC panel. There is no switch to operate the pump.
  5. whiskywizard, Oct 27, 2009
    #5
    whiskywizard

    whiskywizard New Member

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    Yes, the vessel has Vacuflush heads. The vacuum pump is also a diaphragm pump but is beneath the sole near the galley.
  6. m2m, Oct 27, 2009
    #6
    m2m

    m2m Senior Member

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    Are there hoses connected to this pump? If yes trace them out one should go to the holding tank and the other to an overboard valve. Having determined that this is the case I would trace the wires back to their origin. If they are not connected to anything you could wire to the panel to an unused breaker, or add a new breaker. Is the pump a Sealand pump and does it say T-Pump on the label, if so it is a transfer pump.
  7. K1W1, Oct 27, 2009
    #7
    K1W1

    K1W1 Senior Member

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    Hi,

    You might find that there is a slightly more nautical term for what you call the Trunk.

    http://en.wikipedia.org/wiki/Lazarette

    I second m2m's suggestion to see if the pump is actually connected and if so to trace the plumbing and cables.
  8. Capt Bill11, Oct 27, 2009
    #8
    Capt Bill11

    Capt Bill11 Senior Member

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    "It is typically found below the weather deck"

    Ah, but there's the rub, his "trunk" is not below a weather deck. :)
  9. Marmot, Oct 27, 2009
    #9
    Marmot

    Marmot Senior Member

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    Is there some reason a dealer can't help?
  10. K1W1, Oct 27, 2009
    #10
    K1W1

    K1W1 Senior Member

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    Hi,

    What is considered the weather deck on one of these point and squirts?
  11. K1W1, Oct 27, 2009
    #11
    K1W1

    K1W1 Senior Member

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    Hi,

    Yes, No one has asked one :)
  12. whiskywizard, Oct 27, 2009
    #12
    whiskywizard

    whiskywizard New Member

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    I might, but lazarette isn't it. Tiara calls it both a trunk and a garage, interchangeably.

    I assure you that if it were easily traceable I would have done so. Thanks for the help.
  13. K1W1, Oct 28, 2009
    #13
    K1W1

    K1W1 Senior Member

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    Hi,

    Given the pictures of one of these boats shown online I would call it a garage or lazarette myself, as the dealer isn't consistent with their name for it I have to ask myself if this is an indication of other non nautical practices on one of these.

    I don't think anyone wrote that it would necessarily be easy to trace the plumbing and wiring of this pump even if you are able to look at it and get your hands on it.

    Given this can you imagine how hard it is to trace/identify/diagnose by others who are not able to have the benefit of such a close encounter?

    As posted earlier- Have you asked a Tiara Dealer for some assistance with this?
  14. Capt Bill11, Oct 28, 2009
    #14
    Capt Bill11

    Capt Bill11 Senior Member

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    Good question.

    Which I can't answer. :)