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Old 16-07-2006, 19:09   #1
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Join Date: Nov 2005
Location: Black Hills, SD
Boat: Now Boatless
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Cruisair PMA1000 SW Circ Pump

After maybe 5 hours of use my new PMA1000 saltwater circulating pump for the salon A/C digested an impeller vane. I was surprised to see upon disassembly that this is a magnetic-coupled pump. Well THAT explains why they're so darned expensive.....

But wait - there's more! Hard plastic impeller assembly is fused to a round ferrous magnet about 2 inches long. Funny but the damn thing spins in a sea water bath - maybe that explains why the 'spare' impeller I pulled from an old pump had rust all over the ferrous component. Why on earth would you design and intentionally expose plain old metal to the water inside a sea water pump?? Drives me crazy...

Excuse the rant.... Heads up to those who may have the same pumps installed aboard. Hard plastic impellers and metal-in-seawater... You just couldn't make these stories up.... And why in heaven's name do I need a mag coupling in a silly little A/C circ pump??
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