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Priming A/C

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petegill2016 View Drop Down
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Joined: 29 June 2020
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    Posted: 29 June 2020 at 14:23
I have a 2016 Hanse 415 with Cruisair A/C. After sailing and heeling about 15 + degrees, I have to prime the water pump to start the A/C. I think an air bubble gets into the raw water line going to the pump while heeling. 

Do others have this problem? An engineer friend suggested installing a low pressure air release valve along the water line. Has anyone done this?
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sflier View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sflier Quote  Post ReplyReply Direct Link To This Post Posted: 29 June 2020 at 15:15
There's a bleed screw at the top of the impeller housing on the pump. We close the inlet seacock before underway to avoid air getting into the system.  It works for us but others may have a better solution.
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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 29 June 2020 at 16:59
Petegill2016

You could also turn off the thru hull valve to stop the water coming out then just open the valve when you want to run the AC. There should, as Sflier, mentioned be a bleed valve on the pump.
Wayne W
Cruising, currently in the Caribbean and will head across the Pacific early 2023
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Gale Force View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Posted: 03 July 2020 at 05:53
Remember to close the raw water seacock and if you don't just use the bleed screw.It just takes a minute.
I have a dedicated spanner attached in the bilge just for this job 

Duncan
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