Winterizing a dead Cruisair..... I know, sounds odd

Discussion in 'Winterizing' started by Island Time Buffalo, Oct 26, 2017.

  1. Island Time Buffalo

    Island Time Buffalo Member

    Aug 19, 2014
    Grand Island, NY
    380 Sundancer 1999.
    7.4 Horizons
    I have a Crusair 7000 BTU that is currently disconnected because of an electrical issue with it. I have a second 12,000 BTU unit that has been heating/cooling the cabin quite effectively so I haven't been motivated to repair it. Both units share the same pump and plumbing.

    I still have to winterize the thing and connecting it back in to power isn't going to work. Do I need to have the unit working, or is there a way to blow air through it or something else?

  2. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    If the boat is blocked up out of the water:
    Back flush anti freeze through the system from the discharge on the side of the boat until the pink stuff comes out of the pickup on the bottom of the boat.
    I’ve done it this way for years using a small hand pump I rigged up with a length of hose that I can shove in the discharge on the outlet side of the pump and another length of hose in a bucket of AF on the pick up side of the hand pump.
    It’s much easier if you have an assistant to hand pump while you hold the hose shoved in to the discharge on the boat.
  3. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    Yup - as above, just pump the AF in through the discharge on the side of the hull. Often, you can wrap the hose with some tape to help make it fit tight enough so you don't need a helper... usually...
  4. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    A spark plug boot on your hose works well...
  5. Jimmy Buoy

    Jimmy Buoy Well-Known Member

    Dec 3, 2008
    Sarnia, Ontario, Canada
    340 Amberjack
    twin 8.1S 370 Hp + 4.5 Westerbeke Genset
    Current boat is heated storage, but my last boat was stored outside. Used an air compressor and simply blew the water out from the discharge back to the pickup in the hull. Never had an issue.
  6. my3sons

    my3sons Well-Known Member SILVER Sponsor

    Feb 24, 2009
    Upstate NY (lake Erie)
    2004 400DB, Onan 9 kw Gen, Highfield RIB,
    Cummins 6CTA
    Nope, don't need to have it working. Can do what any of the posters above said, or sounds like you usually pump the pink through using the system pump. Go ahead and do that if you wish. Run the pink through using one unit until it runs out both thru-hulls.
  7. Island Time Buffalo

    Island Time Buffalo Member

    Aug 19, 2014
    Grand Island, NY
    380 Sundancer 1999.
    7.4 Horizons
    all great suggestions. not sure which way I'll go, but very glad that this isn't a big deal. thanks one and all
  8. skibum

    skibum Well-Known Member

    Jul 30, 2007
    Perry Hall, MD
    2005 Sundancer 260
    496 Magnum HO
    I've been winterizing mine by removing the strainer cover and then putting my (big) shop vac on the discharge port on the outside of the hull. It sucks all of the water right out in about 5 seconds.
  9. wayne0

    wayne0 Active Member

    May 4, 2014
    Newburyport, Ma.
    2000 340 Sundancer
    Twin 7.4 ltr.V-drives
    The down side of this is, the pump looses it's prime, so at the start of the season you have to re-prime the pump to get things moving. PITA. For the cost of a gallon of pink, I pump just it thru the outlet.

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