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Old 11-05-2017, 12:51 PM   #1
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raw water washdown - winterize?

Will be keeping boat in the water year round. Temps in pacific northwest may get down occasionally to mid teens at most. Does anyone bother doing anything with raw water washdown pump and/or lines (antifreeze or disconnect fittings to fully drain)?

Also, does anyone keep a bulb or heater going in lazarette?

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Old 11-05-2017, 01:55 PM   #2
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Absolutely at the very least drain the system down to the lowest point possible
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Old 11-05-2017, 02:28 PM   #3
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Sea water freezes at 28 degrees F. In a raw water washdown system, the critical component that can be damaged in freezing weather is the pump. If the pump is mounted low down in the bilge, then it probably won't freeze.

But why take the risk. Close the thru hull and open the strainer lid. Open the raw water outlet, turn on the pump and pour a half gallon of the pink stuff into the strainer while the pump sucks it up. It takes 5 minutes and $2.00 worth of antifreeze to do it.

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Old 11-05-2017, 06:09 PM   #4
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Winterizing is so cheap, and so easy, compared to the annoyance and expense of replacing the pump or anything else. Even if you're paying someone to winterize it.
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Old 11-05-2017, 06:12 PM   #5
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Does the water in the slip where the boat is freeze over beyond a thin sheet if at all? If so, yes. If not, no.
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Old 11-05-2017, 06:20 PM   #6
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My raw water pump and it's strainer are both mostly plastic, wash down pumps are relatively expensive. All it takes is one cold day... And you know with all that climate change going on things just aren't as dependable as they used to be.
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Old 11-05-2017, 08:34 PM   #7
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I drain the water from my anchor washdown. I remove the hose from the washdown pump outlet, remove the garden hose "cap" on the deck fitting and let drain completely. That is the only one I bother to drain or "winterize" here in the PNW.
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Old 11-05-2017, 09:51 PM   #8
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Winterize it properly. All it takes is a cold snap , a power outage and it could freeze. Even if the pump doesn't freezew but a line does you will have a big mess to clean up and maybe a fight with the line.
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Old 11-05-2017, 11:50 PM   #9
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The first winter with our Camano (on Lake Washington) I didn't even think about the washdown system. I just closed the seacock in the lazerette. When I opened it in the spring, water started pouring out of the broken plastic strainer. The hose to the cockpit shower split too. The next winter I drained both of them.
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Old 11-06-2017, 12:23 AM   #10
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I'm draining the cockpit shower line via fitting under valley sink. how are you draining raw water line while ensuring no water is left in pump?
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Old 11-06-2017, 01:56 AM   #11
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I closed the seacock and removed the cover on the strainer. Then removed the hose on the output side of the pump and opened the nozzle on the washdown to let it drain.
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Old 11-07-2017, 09:36 PM   #12
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I don't have a raw water washdown on my Camano. My cockpit shower is plumbed into the fresh water. I wonder if that was a factory option or not??
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Old 11-07-2017, 09:45 PM   #13
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My raw water wash down is plumbed onto the toilet thru hull. There is a valve to close off the thru hull, and then a diverter valve on top of that directing the raw water to either the toilet OR to the wash down pump. I drain the wash down and pull it's strainer, and then disconnect the toilet line to suck the pink stuff through the toilet and it's systems.

I could see no reason to make another hole in my hull, if the toilet doesn't flush then the diverter valve is in wash down position or the valve below it is closed...
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Old 11-07-2017, 10:07 PM   #14
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I plan to include one of these Groco flush ports when I install my raw water wash down. Currently, they’re on both Lehmans, the genset and AC freshwater lines and they work like a charm for winterizing.
  1. Close seacock,
  2. Pull plug,
  3. Insert fitting attached to hose attached to elevated bucket full of antifreeze,
  4. Start device you’re winterizing.
I’ll also use these for freshwater flushes.
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Old 11-08-2017, 03:48 AM   #15
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I've wintered as far north as Nanaimo, BC. My bilge area never gets below 34F. That was in weather that got down to 10F. The plumbing to the deck I drain. The pump (in the engineroom) I leave alone. I live aboard so the ER usually stays above 40F.
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Old 11-08-2017, 06:09 PM   #16
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Quote:
Originally Posted by South of Heaven View Post
I don't have a raw water washdown on my Camano. My cockpit shower is plumbed into the fresh water. I wonder if that was a factory option or not??
It was an option on our Camano, built in 2005.
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Old 11-08-2017, 11:31 PM   #17
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Quote:
Originally Posted by South of Heaven View Post
I don't have a raw water washdown on my Camano. My cockpit shower is plumbed into the fresh water. I wonder if that was a factory option or not??
what are the spigots on your bow and in cockpit?
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Old 11-09-2017, 07:25 AM   #18
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Quote:
Originally Posted by jhance View Post
what are the spigots on your bow and in cockpit?
The cockpit spigot is fresh water. The one on the bow does not work, so I'm not sure.
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Old 11-09-2017, 11:59 AM   #19
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Raw or freshwater washdown for anchor... you probably have a valve off somewhere.
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Old 11-09-2017, 01:01 PM   #20
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The factory optional anchor wash-down had a through hull, strainer, and pump in the lazarette on the port side at the transom. There was a breaker on the electrical panel to supply power. The only valve was at the through hull.
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