We've used the Grundfos SQE and the MQ lines of CP pumps and never had
problems. I've only seen them keep running, if there was a leak.
R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
303 505-8760
On 4/27/17 5:09 PM, RE Ellison wrote:
I tangled with one system that had a constant pressure pump
He had moved an off grid system to a location where grid was available
And wanted to use it as a back up
He ended up selling the entire system once I explain to them the thing
was never going to stop running at every possible opportunity
It was my first experience with one of those I'll never do it again
Bob ellison
On Apr 27, 2017, at 6:48 PM, Bradley Bassett <[email protected]
<mailto:[email protected]>> wrote:
Dana,
For off grid you may not want to use the constant pressure pumps.
They will run a little bit, a lot of the time to keep the pressure
constant. I think it might be more efficient to use a pressure switch
and regular pressure tank. Anyone with experience in this?
Brad
On Wed, Apr 26, 2017 at 8:32 PM, Dana <[email protected]
<mailto:[email protected]>> wrote:
My well driller-well pump guy is offering Sta-Rite pumps
manufactured by Pentair [as in Pentair water filtration they seem
to be buying lots of water related companies].
I am curious as to feedback on these, has anyone used them?
Soft start, digital controls, easy programming, stainless steel,
3-year warranty, & includes a pressure transducer, so no pressure
switch required.
My pump guy says he has only had 1 issue on 1 pump in serval
hundred installed. Almost sounds too good to believe.
A bit less $ retail than a Grundfoss but supposedly a whole lot
more reliable.
A 1 HP motor 20 GPM pump draws 4.7 Amp/240 VA as it hits a 60 psi
cutout [1,128 watts peak] though I will set to 30/50 psi.
Comments please…
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Dana Orzel Great Solar Works, Inc.
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