trackers (was Re: Solar near Airports [RE-wrenches])

[Matt Tritt]

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I agree with Todd's assessment of Array Tech's equipment, but with fewer
qualifications. I also have to admit to having had quite a high percentage
of motor drive problems with the early series, and I have lot's of them out
there. But, the way I see it, the accuracy and early morning response
abilities of these trackers far out-weigh the sluggishness, rustiness and
vulnerability to wind of the alternatives.

Matt T
----- Original Message ----- 
From: "Todd Cory, Mt. Shasta Energy Services" <toddcory at finestplanet.com>
To: <RE-wrenches at topica.com>
Sent: Monday, July 19, 2004 6:07 AM
Subject: trackers (was Re: Solar near Airports [RE-wrenches])




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I believe Array Technology's watt-sun trackers have finally solved the
"achilles
heal" of their products, namely the "eyes" on the controller. The problem is
that the eyes would age at different rates which would eventually leave them
so
out of calibration with each other the tracker would either track
inaccurately,
or stop working altogether. They now have retrofit (infrared?) sensor heads
available for older units that appear to have solved this problem, making
this
product worth serious consideration for pole mounted systems.

Todd


William Miller wrote:

> Ray:
>
> My experience with Watt-sun trackers is that they work great, when they
> work.  I've sent each controller I've installed back more than once for
> repair.  I suggest you find out independently (not from someone on the
list
> wanting to promote them) if they are any more reliable these days than
they
> used to be.
>
> Also, if the tracking is not completely accurate, you could be reflecting
> towards the shadow, not right at it, exacerbating the problem, right?
>
> William Miller
>
> At 10:51 AM 7/16/2004, you wrote:
>
> >Hi All;
> >
> >Thanks for the great responses. I am now considering Watt-sun trackers,
> >since the direct reflection would be straight into the shadow of the
> >aircraft as Randy  noted.

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