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zoom555 07-02-2009 05:43 PM

Automatic Bilge Pump Won't Shut Off
Last year I installed a small bilge pump with a built-in float switch. I also installed an auto/manual/off switch and generally left the pump in auto mode.

After a long spring that involved a rudder rebuild and assorted related problems, I launched last week. I've discovered that the bilge pump no longer reliably shuts itself off. If left on auto, it will run until it's quite hot.

The pump is a Seasense Auto 800 GPH model (manufacturers' info here).

Any suggestions on how I might diagnose the problem?

Hobos 07-02-2009 06:32 PM

Bildge Pump
Sticky float or sticky contacts.

bubb2 07-02-2009 06:46 PM

It's gunked up. Pull it apart and clean it.

scottyt 07-02-2009 09:02 PM

i had several float switches fail, either wont shut off or wont run. i went the ultima electronic switch and its been fine. i just check it monthly and wipe it off, as most time i read about it not working was due to it being dirty

RogerDuncan 07-04-2009 09:46 AM

I agree - clean it out . bilges can get cruddy

OceanHound 07-06-2009 04:22 AM

I had the same problem twice with my Auto 500 GPH Bilge Pump
When the Auto Switch stops working, I just pull it apart and clean up the contacts. Usually lasts another 6 months before I need to clean it up again :)

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