grundfos on mod.sine [RE-wrenches]

[Windy Dankoff, Dankoff Solar]

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>I have a couple of grudfos SQ pumps working on mod. sine wave inverters
>just fine. When can I expect to have problems? How long does it take for
>the mod. sine wave to destroy the pump?  Lee Tavenner at Solar Plexus

I have no idea, Lee. I've only heard from more than one source that 
it actually doesn't work. So, I would have to say it's asking for 
trouble. It can be run from any sine wave inverter because it doesn't 
draw a starting surge. You might be best to urge your customers to 
equip themselves accordingly.

Windy

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