City water hookup

quote:
Originally posted by walterv

quote:
Originally posted by Gregory S

Dave, is that necessary? can't the compressed air blow accross the pump and empty it all?

Click to expand...


No it is not.

Click to expand...


Walter give some thought to this I'm connecting the compressor to the city water hook up this put pressure in all of the lines right up to the pump which has a check value and prevents the water from backing thru it so where does this water go if I don't open the fitting? I can answer this because I made the mistake of not doing this once. That water will sit in the hose and the output side of the pump and then freeze and crack either a fitting or the pump or both. When I open the hose a bit of water is blown out that otherwise would have remained. So I will continue to do it my way!
 
FWIW - When you use a wetvac to suck the water out form the system the dockside water fitting pressure valve will allow plenty of air through to get rid of all the water. Once the air is running through it the sound it makes is much like a 'Kazoo' so you know it is all clear.
I leave a piece of blue painters tape one each fitting that is left open to function as a 'flag' to remind me of next years commissioning.
Using the same blue tape as a flag on each breaker as I winterize (ie - HWH, pumps, ignition, etc) helps make sure that everything that is supposed to remain off does remain off until it is ready.
 
quote:
Originally posted by Audrey II

quote:
Originally posted by walterv

quote:
Originally posted by Gregory S

Dave, is that necessary? can't the compressed air blow accross the pump and empty it all?

Click to expand...


No it is not.

Click to expand...


Walter give some thought to this I'm connecting the compressor to the city water hook up this put pressure in all of the lines right up to the pump which has a check value and prevents the water from backing thru it so where does this water go if I don't open the fitting? I can answer this because I made the mistake of not doing this once. That water will sit in the hose and the output side of the pump and then freeze and crack either a fitting or the pump or both. When I open the hose a bit of water is blown out that otherwise would have remained. So I will continue to do it my way!

Click to expand...


Dave,
I am not sure I ever saw the "check valve" you speak about.

But if you empty your tank, first step in what I discussed, to do, the faucets are spitting and there is no real sign of any more water left, the pump is dry.

I have done this on all my boats and a half of dozen of other boats I have helped my friends with and have never , never had a problem.

Also understand, a little water here and there is fine, as long as when it freezes you have room for expansion.

This is just my experience winterizing, Silverton's, Regals, Cruiser Yachts, Formula boats.
 
Thanks Walter, heade to HF this weekend for a compressor. Are you moving your boat South for the winter?
 
No not this year Greg, with the price of fuel being so cheap now it would have made sense to do so. :)
 
Walter I guess I will have to draw you a picture of what's happening. I too empty my water tank and let it pump dry for a bit then I hook up the air tank and pressurize the lines in doing so it pushes water back towards the pump with no place to go it just sits in this line right up to the output of the pump. The pump has a pressure switch which also acts as a check valve preventing backflow thru the pump so the water will sit there and freeze it you don't bleed it out. There was one year I didn't bleed it and I crack the fitting on the pump.

If you have been lucky to date this is great! I'm not telling you that you need to do this but I will warn others that choose not to take this chance.
 
Dave,
No big deal and your warning is a good one. I just never ran into this.
 
Just got my compressor and air hose and quick connect fittings at Harbor Freight. Not bad for $59! Now all I need are fittings for the city water hook up. Thanks guys.
 
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