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Air Conditionning flush |
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Nelson01 
Lieutenant Commander 
Joined: 18 September 2018 Location: Med...Italy now Status: Offline Points: 58 |
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 Topic: Air Conditionning flushPosted: 12 October 2021 at 06:57 |
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We are storing the boat for winter.
How are you flushing your A/C system with fresh water? Marc
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Marc
H508#11 UNEVIE |
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SVZara
Captain 
Joined: 04 November 2018 Location: Boston, MA Status: Offline Points: 235 |
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Posted: 14 October 2021 at 02:06 |
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We run barnacle buster through the system at the end of the season. We close the through hull and then open up the strainer and pour it in while running all the AC units. It will clean out the crap in the system. Then we flush with fresh water using same method. And lastly we run the antifreeze last and that keeps the system from freezing.
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Marc
S/V Zara 2016 Hanse 505, Hull #129 |
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Black Diamond
Admiral 
Joined: 24 October 2015 Location: Newport, RI, US Status: Offline Points: 1275 |
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Posted: 19 October 2021 at 12:52 |
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We do the same as Marc. I rigged up some special hoses that allow drawing from a bucket and returning to a bucket to help in the process. |
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Rick
S/V Black Diamond Hanse 575 Build #192, Hull# 161 Newport, RI |
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415 Singapore
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Joined: 23 September 2013 Location: Singapore Status: Offline Points: 935 |
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Posted: 20 October 2021 at 06:44 |
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Hi, has anyone done this with the boat in water? If so how?
We have two units running off one central pump, with the outlet valves being in the stern and forward cabins. I was thinking of closing the inlet and outlet valves and then pumping / sucking out as much water as i can from the strainer, then re-filling with barnacle buster, open the outlet valves a little and run the pump for a short while whilst topping up the strainer. Stop and repeat a few times. Any advice would as always be much appreciated Take care Paul
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Paul - Night Train - 415 #136
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Black Diamond
Admiral
Joined: 24 October 2015 Location: Newport, RI, US Status: Offline Points: 1275 |
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Posted: 20 October 2021 at 23:54 |
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I *ALWAYS* do it with the boat in the water. That's what the hoses were for. To disconnect the hose coming from the seacock (in and out) and have it come from/to a bucket. Making the hoses makes the job easier every fall for winter layup. FWIW |
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Rick
S/V Black Diamond Hanse 575 Build #192, Hull# 161 Newport, RI |
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415 Singapore
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Joined: 23 September 2013 Location: Singapore Status: Offline Points: 935 |
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Posted: 21 October 2021 at 07:10 |
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Hi Rick, many thanks for the reply, I have figured out how to extend the outlet hose so that it comes back to near the strainer / filter. Our inlet is mounted directly to the bottom of the strainer / filter so not possible to disconnect there. So am not sure how to put the water back into the system? If I just take the the top off the strainer / filter and put the hose in there I think I will get water and barnacle buster everywhere?
I saw a Youtube video of a far larger boat and system where they had changed to a special cover for the top of the strainer which had a hose connector in it. All the best Paul
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Paul - Night Train - 415 #136
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Black Diamond
Admiral
Joined: 24 October 2015 Location: Newport, RI, US Status: Offline Points: 1275 |
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Posted: 21 October 2021 at 12:00 |
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Ours is a 575, not a 505, so I cannot speak to the specifics of your boat. On ours, I disconnect and connect my hoses at the seacock, not the strainer. I'm sure there are many options, but my experience is that anything that makes the winterizing/commissioning process easier is worth investigating. |
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Rick
S/V Black Diamond Hanse 575 Build #192, Hull# 161 Newport, RI |
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Wild
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Joined: 18 March 2010 Location: Turkey-Greece Status: Offline Points: 937 |
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Posted: 21 October 2021 at 19:53 |
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hello
We also have the filter/strainer direct on top of the intake valve. I have placed a T piece direct after the pump with a valve and a hose to vent the pump when needed. I connect the hose direct to the fresh watersysteem to rinse the system without running the AC pump. Till now(11 year) no problem with barnacle in the system.
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Wild and Wet
Belgium 545e#268 |
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415 Singapore
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Joined: 23 September 2013 Location: Singapore Status: Offline Points: 935 |
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Posted: 26 October 2021 at 13:26 |
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Hi, thanks for the advice, we flushed both systems today. The only complication was getting the 30 mm short hose off between the strainer and the pump. In the end I cut it off and connected a new 1 metre long length to the pump. I had intended to cut this hose back down to the original length, but decided to leave the long hose in as it allows for relatively easy disconnection when the system next needs flushing.
All seems good now the pump seems to run quieter and I was amazed how much black gunge we collected! All the best Paul  |
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Paul - Night Train - 415 #136
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kipwrite
Commadore 
Joined: 14 October 2015 Location: New York Status: Offline Points: 495 |
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Posted: 27 October 2021 at 16:58 |
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That AC manifold looks suspect. They are prone to pinhole leaks when they look like that.
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Kipwrite
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