[RE-wrenches] Lorentz Pumps

[Dana]

Ditto on my experience with Lorentz. I have pulled more than I can count and
recycled.

 

I have had a great experience with BISON SOLAR helical pumps we have several
in and no issues. Typ designed for stock tanks they can be field configured
for domestic pumping AC & DC. 

Huge range of options and sizes. 

 

E - info at bisonsolar.com

[580]646.0911

 

____________________________________________________________________________

Dana Orzel 

Great Solar Works, Inc -  NABCEP # 051112-136

dana at solarwork.com  - www.solarwork.com 

O - 970.626.5253    F - 970.626.4140   C - 970.209.4076             

"Responsible Technologies for Responsible People since 1988"  

 

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allan
Sindelar
Sent: Tuesday, February 19, 2013 4:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Lorentz Pumps

 

Tom,
Rant: <ON>
I would caution you to be very careful working with Lorentz pumps. About 16
months ago we got a service request from a longtime customer for whom we had
installed an ETA (Lorentz) PV-direct submersible in late 2005. The pump had
worked well for nearly 7 years, serving community water for four off grid
households, but the helical rotor had finally worn out, as I recall. I
called GenPro about purchasing a replacement head, and was told that the US
has been divided into northern and southern territories by Lorentz, and I
needed to contact another company (whose name is in our records but not my
head). That company told me that we could neither buy a replacement head nor
a replacement pump, as we were not licensed pump dealers.

Grundfos had once allowed their pumps to be sold through all sorts of
channels, and it came back to bite them hard, as PV internet retailers with
salespeople who knew next-to nothing about pump selection and water system
design were selling pumps to anyone with a thick wallet. Grundfos tech
support was overwhelmed, and changed policy to allow their pumps to be sold
only through water and well industry distributors. That made a lot of sense
to me, and we never lost our ability to spec, purchase and install their
pumps, as our longtime conventional pump distributor knew we knew our
business. But we'll never become "licensed pump installers", and as a
result, we'll never carry or recommend Lorentz pumps. 

I had sworn off ETAPumps years ago when the failure rate was too high; I had
eventually learned that those issues had been resolved and the pumps and
controllers were proving pretty reliable. But this issue killed it for me.
If anyone can offer an update to suggest that the situation has changed,
please do so! (Jeez, I have a Lorentz pump in my own well at home, courtesy
of Windy. I'd replace it, but it just hasn't stopped working yet. Talk about
a bit of hypocrisy...)
Rant: <OFF>

Tom, 
Besides getting feedback from other Wrenches, I'd talk with GenPro, your
distributor, about support. I'm copying this message to them; if I get a
useful response about my rant, I'll post it to the list.
Allan

Allan Sindelar
 <mailto:Allan at positiveenergysolar.com> Allan at positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
Positive Energy, Inc.
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com <http://www.positiveenergysolar.com/>  

 

 

On 2/19/2013 3:01 PM, Tom DeBates wrote:


Hello Wrenches,
   Has anyone had recent experience with the Lorentz PS (PV) line of pumps,
both centrifugal and helical? I searched the archives and there was some
feedback on Lorentz pumps two years ago. Just wondering if anyone had
anything more recent.
Thanks,
Tom 

Tom DeBates
Habi-Tek
Geneva,IL. 60134






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