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    Hey Dan;<br>
    <br>
    If this just problem just started, I'm with Drake, you could have a
    premature cell failure.  I also agree with Allan, 2 wire pumps are
    certainly problematic on inverters.  Many well service folks don't
    even install them because they don't last near as long as 3 wire
    pumps, so your customer may end up needing to replace the pump soon
    anyway.<br>
    We've used the Franklin Sub Drive with a 1.5 Hp Pump that would
    start on an SW 4024, but not on an Outback VFX3524.  Worked well, no
    call backs.  I'm not sure if they will work with a 2 wire pump
    though.<br>
    Before you take that long trip, have the customer check individual
    battery voltages while the pump is running.<br>
    <pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer, 
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
    <div class="moz-cite-prefix">On 12/10/2016 3:43 PM,
      <a class="moz-txt-link-abbreviated" href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a> wrote:<br>
    </div>
    <blockquote
cite="mid:dfe71ab37bb37d7401d462d143a455370d3ae429@webmail.redwoodalliance.org"
      type="cite">Have you checked the condition of the batteries.
      Unless the L-16s are Rolls or  East Penn, it might be about time
      for some cells to be going bad. <br>
      <br>
      <br>
      <blockquote><br>
        ----- Original Message -----<br>
        <div id="origionalMessageFromField"
          style="width:100%;background:rgb(228,228,228);">
          <div style="font-weight:bold;">From:</div>
          "RE-wrenches" <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a></div>
        <br>
        <div id="origionalMessageToField" style="font-weight:bold;">To:</div>
        "RE-wrenches" <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a><br>
        <div id="origionalMessageSentField" style="font-weight:bold;">Cc:</div>
        <br>
        <div style="font-weight:bold;">Sent:</div>
        Sat, 10 Dec 2016 10:39:30 -0700<br>
        <div id="origionalMessageSubjectField" style="font-weight:bold;">Subject:</div>
        Re: [RE-wrenches] Retrofit variable speed drive to old well
        pump?<br>
        <br>
        <br>
        <div dir="ltr">Michael; Battery bank voltage at 75% SOC is
          around 24.7v, so it's in the ballpark and the battery bank has
          only about 3 years on it (8 x L-16) and not much abuse.</div>
        <div class="gmail_extra"><br style="clear:both;">
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                            <div><span
                                style="font-size:12.8000001907349px;">Dan
                                Fink</span>
                              <div style="font-size:12.8000001907349px;">Adjunct
                                Professor of Solar Energy Technology,
                                Ecotech Institute</div>
                              <div style="font-size:12.8000001907349px;">IREC
                                Certified Instructor™ for: </div>
                              <div style="font-size:12.8000001907349px;">~
                                PV Installation Professional</div>
                              <div style="font-size:12.8000001907349px;">~
                                Small Wind Installer</div>
                              <div style="font-size:12.8000001907349px;">Executive
                                Director, Buckville Energy</div>
                              <div style="font-size:12.8000001907349px;">NABCEP
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                                Providers™<br>
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          <br>
          <div class="gmail_quote">On Sat, Dec 10, 2016 at 10:34 AM,
            Shasta Daiku <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:mjmorningstar@gmail.com">mjmorningstar@gmail.com</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex;">
              <div>What is the battery voltage when the client says that
                SOC is %75?
                <div><br>
                </div>
                <div>VFD driven pumps are three phase. There are single
                  phase “soft start” controllers for pumps and motors
                  designed for that application, but not for a two wire
                  fed submersible pump. The pump, for mechanical
                  reasons, not just electrical,  may may be resisting
                  start up. </div>
                <div><br>
                </div>
                <div>Michael</div>
                <div><br>
                  <div>
                    <blockquote><span></span>
                      <div>On Dec 10, 2016, at 9:11 AM, Dan Fink <<a
                          moz-do-not-send="true"
                          href="mailto:danbob88@gmail.com">danbob88@gmail.com</a>>
                        wrote:</div>
                      <br
                        class="m_-2623845610230117014Apple-interchange-newline">
                      <div><span></span>
                        <div dir="ltr">Hi Bob; I checked the connections
                          for corrosion, and the wire size looks like
                          "the usual" for up here in this area, it's
                          only about 100 feet and the usual well depth
                          around here is 350 ft. Running stouter wire
                          might be an option to consider...but that's a
                          lot of digging. I'm just hoping VSD might be a
                          quick and dirty solution.</div>
                        <div class="gmail_extra"><br style="clear:both;">
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                                            <div><span
                                                style="font-size:12.8000001907349px;">Dan
                                                Fink</span>
                                              <div
                                                style="font-size:12.8000001907349px;">Adjunct
                                                Professor of Solar
                                                Energy Technology,
                                                Scotch Institute be</div>
                                              <div>
                                                <div class="h5">
                                                  <div
                                                    style="font-size:12.8000001907349px;">IREC
                                                    Certified
                                                    Instructor™ for: </div>
                                                  <div
                                                    style="font-size:12.8000001907349px;">~
                                                    PV Installation
                                                    Professional</div>
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                                                    style="font-size:12.8000001907349px;">~
                                                    Small Wind Installer</div>
                                                  <div
                                                    style="font-size:12.8000001907349px;">Executive
                                                    Director, Buckville
                                                    Energy</div>
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                            <div class="h5">
                              <br>
                              <div class="gmail_quote">On Sat, Dec 10,
                                2016 at 9:53 AM, RE Ellison <span
                                  dir="ltr"><<a
                                    moz-do-not-send="true"
                                    href="mailto:reellison@gmail.com">reellison@gmail.com</a>></span>
                                wrote:<br>
                                <blockquote class="gmail_quote"
                                  style="margin:0 0 0
                                  .8ex;border-left:1px #ccc
                                  solid;padding-left:1ex;">
                                  <div>
                                    <div>Don't know about the variable
                                      speed but are the wires feeding
                                      the pump large enough for the
                                      distance?</div>
                                    <div>Sounds like it might be voltage
                                      starved because of a high
                                      resistance / bad connection or a
                                      long wire run and the need for a
                                      larger wire ?</div>
                                    <div><br>
                                    </div>
                                    <div>Just a thought,</div>
                                    <div>Bob Ellison</div>
                                    <div>
                                      <div
                                        class="m_-2623845610230117014h5">
                                        <div><br>
                                          On Dec 10, 2016, at 11:39 AM,
                                          Dan Fink <<a
                                            moz-do-not-send="true"
                                            href="mailto:danbob88@gmail.com">danbob88@gmail.com</a>>
                                          wrote:<br>
                                          <br>
                                        </div>
                                        <blockquote>
                                          <div>
                                            <div dir="ltr">Esteemed
                                              Wrenches;
                                              <div><br>
                                                <div>I have a client in
                                                  a very remote mountain
                                                  location who is having
                                                  trouble with his
                                                  inverter starting his
                                                  well pump when battery
                                                  state of charge is
                                                  below 75%. 24v system,
                                                  Magnum inverter. </div>
                                                <div><br>
                                                </div>
                                                <div>It's a 2-wire pump,
                                                  unknown age, model,
                                                  horsepower, or well
                                                  depth. It has always
                                                  given him trouble,
                                                  that's why he upgraded
                                                  to 24v, and the
                                                  situation is better,
                                                  but not ideal yet. I
                                                  don't think adding a
                                                  hard start capacitor
                                                  would help as there
                                                  should be one inside
                                                  the pump itself,
                                                  though I suppose it
                                                  could be blown.</div>
                                                <div><br>
                                                </div>
                                                <div>Because of the
                                                  distance and the rough
                                                  road, it would be
                                                  super expensive for a
                                                  well company to come
                                                  up there, pull the old
                                                  pump and set a new,
                                                  modern soft-start one.</div>
                                                <div><br>
                                                </div>
                                                <div>Has anyone here had
                                                  any experience with
                                                  retrofitting variable
                                                  speed drive units to
                                                  an unknown pump? If
                                                  so, what models have
                                                  you tried and what do
                                                  you prefer?</div>
                                                <div><br>
                                                </div>
                                                <div>Thanks; </div>
                                                <div><br
                                                    style="clear:both;">
                                                  <div>
                                                    <div
                                                      class="m_-2623845610230117014m_-8730233548164673502gmail_signature">
                                                      <div dir="ltr">
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                                                          <div>
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                                                          <div>
                                                          <div dir="ltr">
                                                          <div><span
                                                          style="font-size:12.8000001907349px;">Dan
                                                          Fink</span>
                                                          <div
                                                          style="font-size:12.8000001907349px;">Adjunct
                                                          Professor of
                                                          Solar Energy
                                                          Technology,
                                                          Ecotech
                                                          Institute</div>
                                                          <div
                                                          style="font-size:12.8000001907349px;">IREC
                                                          Certified
                                                          Instructor™
                                                          for: </div>
                                                          <div
                                                          style="font-size:12.8000001907349px;">~
                                                          PV
                                                          Installation
                                                          Professional</div>
                                                          <div
                                                          style="font-size:12.8000001907349px;">~
                                                          Small Wind
                                                          Installer</div>
                                                          <div
                                                          style="font-size:12.8000001907349px;">Executive
                                                          Director,
                                                          Buckville
                                                          Energy</div>
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