<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Allan, <div><br></div><div>We have exclusively specified SunPumps for many years. Great product and support and no failures to date.<br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; 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font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div><div><br class="Apple-interchange-newline">Larry Crutcher</div><div>Starlight Solar Power Systems</div></div></span></span><div><br></div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><u><br></u></div></div></span></span></div></span></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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<br><div><div>On Nov 20, 2012, at 5:24 PM, Allan Sindelar wrote:</div><br class="Apple-interchange-newline">
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Fellow Wrenches (who still do water pumping):<br>
We did a 24V stand-alone water pumping system for a Y2K customer. It
used a SunRise (remember them?) pump set by hand method at 100' in a
new 165' well, open discharge into a storage tank, and a 24V
Flowlight Booster Pump on a battery-based system with 150 watts of
PV charging batteries. The batteries were replaced once and are now
being replaced again, this time with AGMs. The system has worked
without failure for 13 years; even the SunRise pump is still
(surprise!) working. <br>
<br>
The owners want to replace the SunRise well pump now, as they know
that no parts or support are available for it, and they want the
peace of mind of a new and superior pump, as they upgrade their
system to be prepared for the possibility of major grid disruption.
The SunRise ran at 60 Vnom from an SC1-B 24-60V proprietary
converter. No other pump uses this. They don't want an inverter.
They will purchase whatever replacement pump I recommend.<br>
<br>
I am aware of four pumps that could work in this application, and am
seeking others' recommendations of which to use:<br>
1. Shurflo 9300: Well known, been around for years, easy to pull and
service, but requires regular diaphragm and valve replacement, so it
would not be my first choice after 13 years of no pump maintenance
or service.<br>
2. Lorentz running at half-speed at 24V: I have this running in my
own well, courtesy of Windy, but won't ever specify it in a system,
as (as of 1-2 years ago, when I last inquired) their main U.S.
distributor instituted a policy of only selling repair/replacement
parts to licensed well driller/pump installers (which we'll never
be), effectively eliminating themselves from the renewable energy
market. So the Lorentz is out.<br>
3. Sun Pumps SDS series: the former Solarjack, with higher-end
diaphragm pumps suitable for this application. I have very little
experience with Solarjack or Sun Pumps, as I was always connected to
whatever Dankoff carried, and would appreciate others' reviews. One
we purchased about two years ago failed and was replaced under their
warranty, so my track record with them isn't the best.<br>
4. SunRotor: these ought to be the best in this low-head 24V
application, as they (like the Lorentz) are a helical rotor design
with a brushless motor. But reviews are mixed on reliability.<br>
<br>
Anything else to recommend? Any preferences from direct experience
with these or others?<br>
<br>
Thank you,<br>
Allan<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
<b>Positive Energy, Inc.</b><br>
3209 Richards Lane (note new address)<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<u><a href="http://www.positiveenergysolar.com/" target="_blank">www.positiveenergysolar.com</a></u></span></font>
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