Fresh water system diagram/bilge system

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   Greeting all.
I am looking for a diagram of the fresh water system for my 341.  If possible I could use any first hand knowledge of the bilge system.  

I was surprised by water in the bilge that appears to be fresh, but clearly my bilge pump is not operating properly.  I plan to dig into the system tomorrow and could use any tips available.

Ken Haas

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Ken Haas Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Joined: 09 June 2020 Location: Sausalito Status: Offline Points: 37	Post Options Post Reply Quote Ken Haas Report Post Thanks(0) Quote Reply Topic: Fresh water system diagram/bilge system Posted: 19 March 2022 at 20:12
	Greeting all. I am looking for a diagram of the fresh water system for my 341. If possible I could use any first hand knowledge of the bilge system. I was surprised by water in the bilge that appears to be fresh, but clearly my bilge pump is not operating properly. I plan to dig into the system tomorrow and could use any tips available. Ken Haas

Martin&Rene Members Profile Send Private Message Find Members Posts Add to Buddy List Rear Admiral Joined: 06 December 2009 Location: United Kingdom Status: Offline Points: 704	Post Options Post Reply Quote Martin&Rene Report Post Thanks(0) Quote Reply Posted: 20 March 2022 at 11:45
	The calorifier pressure relief valve is a common source of the problem. If you put in "calorifier" in the advanced search box, "any forums, any date" you will find many threads. This is where I made some comments. https://www.myhanse.com/hot-water-boiler-dropping_topic11929_post98132.html?KW=calorifier#98132 Actually nowadays, when starting the engine etc, we turn off the fresh water pump, run a tap until no more water comes out and then shut the tap. We then just switch the water pump on later when you want some water and leave it on. The pressure increase leakage problem only arises when the water is first being heated. The other area to check is under the starboard saloon seat in front off the fridge compressor, as that is where most of the of pipe connections are, for both the hot and cold water systems. Also, after filling the water tank, we always run a bit of water off to drain the inlet pipe to ensure there is no pressure on the water tank lid, as this can be a source of a problem , if you have not tightened it correctly.
	Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout, normally based in Scotland



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