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<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:windowtext'>Third
me here on this.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:windowtext'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:windowtext'>I
have a Wattsun AZ 125 at my office and folks love it. The bigger AZ 225 is a
stout piece of iron and very reliable in its current incarnation. I have better
than 20 - AZ 225 installed out there and no service calls on any of them. High incidence
of lightning used to be a problem but does not seem to be much of a problem
with basic LA SOV lightning arresters on. I am currently comparing 6 –
Evergreen 180’s on the tracker to 6 - Evergreen 180’s on a fixed 50</span><span
style='font-family:"Arial","sans-serif";color:windowtext'>°</span><span
style='font-family:"Arial","sans-serif";color:windowtext'> roof mount at my
office that is an Outback grid tie with battery backup for the office. I hope
to do a HP article here in the late summer when I have a full 365 days of data.
Just looking at it roughly I get 28 to 32% more watt hrs/day from the tracker so
far and the snow clears faster from the tracker, granted it is pole mounted and
I am too busy to go up on the roof, but that is reality for a lot of roof
installations.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:windowtext'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:windowtext'>As
Kerry Kalarney with Sundance Solar says, “ put it where the sun Shines!”<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>Dana
Orzel<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>Great
Solar Works, Inc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>www.solarwork.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>E
- dana@solarwork.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>V
- 970.626.5253<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>F
- 970.626.4140<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#1F497D'>C
- 970.209.4076<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN style='font-family:"Arial","sans-serif";color:#1F497D'>“I'd put
my money on solar energy… I hope we don't have to wait 'til oil and coal
run out before we tackle that.”<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN style='font-family:"Arial","sans-serif";color:#1F497D'>—Thomas
Edison, in conversation with Henry Ford and Harvey Firestone, March 1931</span><span
style='font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:windowtext'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Todd
Cory<br>
<b>Sent:</b> Saturday, April 11, 2009 2:37 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Wattsun AZ-225 reliability and Production<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:13.5pt;
font-family:"Arial","sans-serif"'>I too have some experience with Array
Technology (Wattsun) trackers (customer systems and 3 here at home). In the
early days there were lots of problems with sensors aging and causing the array
to not track properly. Customer service was always (and still is) exceptional. <br>
<br>
Those early problems have been resolved and now the product is robust. My only
minor issue is in low light conditions (like in the winter) the rack will go
clear back flat. The work around for here in snow country is that I always add
a toggle switch to the vertical actuator. I have the customer shut the power
off to the vertical actuator in the winter at a steep angle to keep the snow
sliding. Pole mounts work really well in deep snow country and if the site specifics
allow, I'll suggest a tracker.<br>
<br>
Todd<br>
P.S. Make sure you remind your customer to grease them at least once a year.<br>
<br>
<br>
</span><br>
Ken Schaal wrote: <o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'>I'll second Jay's remarks. We
had a 4 tracker system from Y2K, that while troublesome, fully demo'd Wattsun's
committment to customer service. A year ago we installed 1 of the new and
improved design, and it has been flawless. Be sure to get the manual switch for
making tracking adjustments and so it can be set flat for windstorms--just for
hurricane insurance here in the east. <br>
<br>
We continue to spec them for those sites with good E to W solar window. With
time of use net metering, they really make sense---so long as the durability
holds up! <br>
<br>
Ken Schaal <br>
<a href="http://www.commonwealthsolar.com">www.commonwealthsolar.com</a> <o:p></o:p></p>
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