Grundfos v standard pumps [RE-wrenches]

[Ken Hulet, Engineering Services Co.]

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Hi Kurt,

We finally solved our well pump not starting on a SW5548 by switching 
to a 1HP SQ. Works like a champ! However we have no experience with 
reliability issues.

Ken


On Wednesday, April 7, 2004, at 10:41  AM, Kurt Nelson wrote:
> It has been my experience that well drillers always want to sell my
> off-grid clients a really big pump and one that they are used to 
> selling
> and/or buy in volume.
>
> I am recommending the Grundfos 5SQ10C-410 for this application, a 
> vented
> Outback inverter and transformer with the pump in a well that is 365
> feet to water (with pressure tank).
>
> The well driller wants to install a 1 or 1.5 horse Goulds pump 5SG10 or
> 5SG15 (preferably the 1.5)
>
> One of his stated concerns is that the electronics in the SQ are down 
> in
> the well with a lightning strike making a pump pull a necessity (the
> Goulds having its electronics top-side).
>
> While I like having electronic top-side as well, the increased
> efficiency of the Grundfos and the soft start seem pretty desirable.
> And, isn't the 3.6KW Outback with 240vac transformer kind of on the 
> edge
> of it with a standard submersible of that horse power?
>
> Any comments, especially regarding the SQ, greatly appreciated.
>
> Kurt Nelson
>
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