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post #1 of Old 07-02-2009 Thread Starter
1973 Northern 25
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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?
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