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Septic tank Hanse 400 |
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kaijus 
Sub Lieutenant 
Joined: 19 February 2007 Location: Finland Status: Offline Points: 1 |
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 Topic: Septic tank Hanse 400Posted: 01 April 2007 at 10:14 |
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Has anyone got experience, if the septic tank needs a pump to empty it to the sea?
I have doubts of it working without a drainage pump.
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Nereide
Captain 
Joined: 31 January 2007 Location: France Status: Offline Points: 189 |
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Posted: 02 April 2007 at 09:18 |
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if the installation is similar to the 411, there is a manual pump beside it (under wash basin), to pump out waste water at sea. the only trick is knowing on what position to put sea cock and valve gate given th number of pipes running between WC and holding tank.
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svrocinante
Lieutenant Commander 
Joined: 11 November 2006 Location: United States Status: Offline Points: 77 |
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Posted: 02 April 2007 at 13:53 |
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No problems what so ever... at least not yet!
We've only been out far enough to do so once, but worked just fine... on our 400, only one thru-hull to open, the one with the hose that comes from the bottom of the holding tank... gravity is a wonderful thing!
Best regards,
Carlos & Maria
SV Rocinante
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JofB
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Joined: 17 January 2005 Location: United Kingdom Status: Offline Points: 129 |
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Posted: 02 April 2007 at 17:03 |
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Quite agree - gravity does the job fine!
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Jof
400e #31 - Grey Goose |
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Rubato
Admiral 
Joined: 12 July 2006 Location: Canada Status: Offline Points: 1806 |
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Posted: 02 April 2007 at 23:21 |
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The holding tanks are up fairly high on the 400 (they might have been lower in the 411) being located above the sink in behind the cabinetry in the head. As such, as mentioned above, all you do is open the sea cock and the tank drains by gravity... (Same arrangement on both forward and aft head) Steve
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400eNo205
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Joined: 10 April 2007 Location: Norway Status: Offline Points: 2 |
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Posted: 10 April 2007 at 14:04 |
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My experience with septic tanks are that if there is any chance for clogging/plugging it will happen. Just wait until there have been a number of women onboard.
I have prevoiusly had boats with good manual tank pumps. But have had to open the pumps and hoses with a full septic tank with built-up pressure with plugged vent hose and pump. This happened last time in the middle of the summer in a crowded marina...
After this experience i fitted an electrical maccelerator pump. Never had problems since.
I will also on my 400e(due june 2007) have electrical macelerator pumps fitted during commissioning in Germany.
PS. A friend of mine also a 400e owner have experienced problems emptying the septic tanks.
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landlocked
Rear Admiral 
Joined: 12 April 2005 Location: Canada Status: Offline Points: 568 |
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Posted: 11 April 2007 at 05:45 |
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I've had no problems after a solid season of use with emptying only at sea. We have the forward and aft head on our 400. I think anything that makes it through the pump and up to the tank makes it back out again under gravity very quickly.
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colincooper
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Joined: 23 October 2005 Location: United Kingdom Status: Offline Points: 562 |
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Posted: 11 April 2007 at 08:27 |
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No problems in 14 months use on a 370 either. If the problem is "women on board" maybe you should ask what is being flushed. If you haven't swallowed it don't flush it - is our rule - and no problems emptying. Also, maybe you could introduce a little more fluid content into the tank? Sorry for the graphic language.
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Colin (owner of Hilde - a 370)
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tingeling
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Joined: 27 December 2006 Location: Norway Status: Offline Points: 148 |
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Posted: 14 May 2007 at 12:40 |
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Septic tanks have two problems, 1): the things you or somebody put into thgem, and 2): The layout including heighth above waterlevel, hose diameter and turns and bends on hoses an valves.
The layout of Hanse 400 is more than OK so, provided you do use lots of water, proper toilet paper specially manufactured for this use and never put any other objects into the toilet you will never encounter problems with the Hanse 400.
A pump will only add to the list of thnings you will need to maintain.
Keep it simple
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Adam
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Joined: 16 April 2007 Status: Offline Points: 101 |
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Posted: 14 May 2007 at 13:34 |
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I'm not sure about the septic system is on the hanse boats, but one trick you can use on a lot of boats if you are unable to empty the tank, is to plug the vent on the top of the tank, and start pumping one of the toilets. This should force the waste out of the tank.
Edited by Adam - 14 May 2007 at 20:41 |
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