11-19-2018, 06:28 AM
That mystery "fourth" bilge pump that lives with its float switch in a plastic box is the shower sump pump assembly.... At least on my 38 Open it is.... Shower and Head sink drain into that box as well as the A/C condensation drains which is pumped overboard when water in the box triggers the pump.... I clean the box/strainer several times a year to ensure hair, etc doens't clog the pump.. M2C


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