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Secondary bilge pump

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415 Singapore View Drop Down
Rear Admiral
Rear Admiral


Joined: 23 September 2013
Location: Singapore
Status: Offline
Points: 678
Post Options Post Options   Thanks (0) Thanks(0)   Quote 415 Singapore Quote  Post ReplyReply Direct Link To This Post Topic: Secondary bilge pump
    Posted: 30 September 2016 at 02:15
Hi Andy, our A/C condensate drains into a small sump box with a float switch activated pump and all goes outboard. You need a non return valve as the drain point is higher than the sump box, but this works very well and keep the bilges dry.
All the best
Paul
Paul - Night Train - 415 #136
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silversailor View Drop Down
Admiral
Admiral


Joined: 25 May 2005
Location: South Haven, MI
Status: Offline
Points: 1021
Post Options Post Options   Thanks (0) Thanks(0)   Quote silversailor Quote  Post ReplyReply Direct Link To This Post Posted: 29 September 2016 at 22:01
Andy, generally a second bilge pump is placed a little higher than the primary system so if the primary is unable to handle the amount of water, the second pump can assist.  I would not limit the second pump's deployment to times when the primary failed.  Rather, it should supplement the primary.  Also, when you do add a secondary, consider making the primary the secondary and  installing a significantly larger and more efficient primary.
Silversailor
South Haven, MI USA
S/V Legacy
2010 Andrews 28
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AndyS View Drop Down
Captain
Captain


Joined: 14 June 2016
Location: River Dunes, NC
Status: Offline
Points: 184
Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyS Quote  Post ReplyReply Direct Link To This Post Posted: 29 September 2016 at 20:47
We have now had our 385 for a few months and love the boat. I was thinking about adding a secondary, back-up automatic bilge pump with an alarm. It just seems to me that having a back-up makes sense. Has anyone else done this? Our AC condensate drips into the bilge, so there is always some water that needs to be pumped out when it is hot. I am planning to put it in a spot where it would only activate should the primary pump malfunction, and I would run a separate hose out a new through hull in the stern to keep the systems completely separated.
Andy
Moonraker
River Dunes, NC
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