Bilge alarm sensor location
Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 385/388
Forum Description: 385/388 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=10691
Printed Date: 27 March 2026 at 03:41
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: Bilge alarm sensor location
Posted By: torridonyachtcharter
Subject: Bilge alarm sensor location
Date Posted: 03 April 2018 at 23:12
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Can anyone please tell me where the sensor is that activates the bilge alarm on our 385? Raising the float switch on the electric pump does not seem to trigger the alarm. ------------- Bareboat yacht charter from Loch Torridon, Scotland, with Torridon Yacht Charter |
Replies:
Posted By: neilbay
Date Posted: 04 April 2018 at 04:03
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Hi I bought a buzzer an fitted it to the float switch as my H400 did not have an alarm Cheers Neil ------------- Hanse 400 2007 - Back in NZ |
Posted By: Carlosailfan
Date Posted: 04 April 2018 at 06:37
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Hello, is your 385 equipped with a Yanmar engine ? If i am well informed they have a double seal at the saildrive with an alarm build in to warn you if the outer seal is leaking. Volvo does not have this double seal. ------------- Best regards /C |
Posted By: neilbay
Date Posted: 04 April 2018 at 06:43
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Hi I have a H400 fitted with a Yanmar Engine and Saildrive - It has a sensor and alarm for the saildrive seal. The float switch and buzzer and in the bilge under the stairs ------------- Hanse 400 2007 - Back in NZ |
Posted By: Carlosailfan
Date Posted: 04 April 2018 at 06:49
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Thanks for this subject, i will check if i have a bilge alarm on my 385, i was not aware of it.  ------------- Best regards /C |
Posted By: S&J
Date Posted: 04 April 2018 at 07:10
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I do not believe that there is any alarm fitted to the electric bilge pump and I guess that if you add one it would also get triggered when running the pump manually from the main electric switch panel. As other threads have pointed out, without a "sump" to collect water in the bilge, you can get a considerable amount of water in the bilges before the float switch is triggered. It has been suggested that the area below the galley sink might be the lowest accessible point. I also like the idea that someone came up with of adding a T-junction to the pipe for the shower and using a flexible (garden?) hose to suck out water from all those difficult to reach places. ------------- H458 #159 Primal Mediterranean cruising |
Posted By: Fendant
Date Posted: 04 April 2018 at 10:58
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AFAIK Hanse does not install a water alarm in the bilge. They rely on the float switch. The problem is that water accumulates in the cavities formed by the stringers The culprits mentionned were the shower sump, the water heater and leaking faucets or leaking pipe joints. Special attention apparently should be geared towards the external shower. I have a grey water collector sump below the pantry, which is another cause for bilge water. Therefore I have installed a cheapo water sensor from http://www.conrad.de" rel="nofollow - www.conrad.de below this sump. In order to have a really dry bilge you need to get the water out of the stringers. For this we have used a small oil change piston pump with a 6 mm hose about 2-3 times / season. You need a small pipe dia in order to get all water out, a garden hose is way too big This year I have bought a little gear self priming pump with a small pipe inlet. I will try to move the watersensor into the Stringer, although I assume that this might trigger more alarms as necessary ------------- Frank |
Posted By: toholthe
Date Posted: 04 April 2018 at 13:16
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I have bought some of these water alarms from ebay: https://www.ebay.com/itm/382307424941 I have placed several places around my H400 to warn of any water in bilge. If you place one under the sink this is more or less the lowest point and it will get water if you get some in the bilge. I have bought a dedicated oil extractor to vacuumed out any water in bilge, but not used it yet. I also bought a
cheap endoscope for smartphone om ebay: https://www.ebay.com/itm/332249758637" rel="nofollow - https://www.ebay.com/itm/332249758637 Then you can really find out what is going on inside the
stingers if you are allergic against water in bilge as i am. |
Posted By: Mark&Catherine
Date Posted: 07 April 2018 at 17:50
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there is no alarm on ours either ------------- 385 ubulukutu sail number GBR 3350L in Turkey and Greece with Mark and Catherine |
Posted By: Carlosailfan
Date Posted: 11 April 2018 at 08:04
I checked this weekend, no alarm, only a very small pump a cute one  , but this will not help me out if i have a real issue. Then we need some real stuff !!------------- Best regards /C |