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<p>Is this something else we need to put into our contracts? <br>
</p>
<p>"Not responsible for sounds due to normal thermal expansion and
contraction of racking, modules, and roof".....</p>
<p>Ray Walters<br>
Remote Solar<br>
</p>
<div class="moz-cite-prefix">On 10/20/2021 2:58 PM, Jason Szumlanski
wrote:<br>
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cite="mid:CAE438R-+paFfUvKj1uwKtQ14dR0ftyV_y8unPuTrnYqCHqYdzQ@mail.gmail.com">
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<div>These were Black framed Axitec panels. The clowns used zip
ties (which were all over the roof, brittle and broken). There
wasn't a single metallic wire clip on site. </div>
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<div dir="auto">This went on for 6 months, with no discernable
improvement or worsening according to the client. It was every
day and night in every climate. I'm quite baffled. </div>
<div dir="auto"><br>
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<div dir="auto">She thought she was being burglarized the first
night. Then she hired a pest/vermin company thinking it was
racoons. It didn't take long to put two and two together and
realize it was coming from the solar array. But the original
contractor couldn't figure it out. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Pic attached of what's there now. </div>
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<div dir="auto">Jaso</div>
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<div dir="ltr" class="gmail_attr">On Wed, Oct 20, 2021, 3:55
PM Nick A Lucchese <<a
href="mailto:lucchesesolar@me.com"
moz-do-not-send="true" class="moz-txt-link-freetext">lucchesesolar@me.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hello
Jason,<br>
<br>
I installed a 36 module array on a standing seam metal
roof in June that I observed \u201ctinging\u201d sounds while
working on it over a few days. It also employed the
Ironridge UFO system but differs in that mine connected to
the standing seams with L-feet paired with S-5! clamps and
every single bolt and set screw was hand tightened and
torqued to specifications. At first I thought a couple of
my metal Acme cable clips holding the PV wire under the
frames were popping off or letting down a conductor from
it\u2019s grasp but after looking into it repeatedly I
determined it was likely just small expansion/contraction
events. Temperatures were in the upper 90\u2019s and they\u2019re
the black REC 365 modules. The building sits away from the
client\u2019s house so if it were still occurring likely know
one would notice but I did not notice it the few times I
was there working on other details on slightly cooler
days. However, if it continued to occur the way I had
heard it I could see how it would get the attention of
someone if it were a habitable structure.<br>
<br>
Nick A Lucchese<br>
<br>
<br>
> On Oct 19, 2021, at 1:04 PM, Jason Szumlanski <<a
href="mailto:jason@floridasolardesigngroup.com"
target="_blank" rel="noreferrer" moz-do-not-send="true"
class="moz-txt-link-freetext">jason@floridasolardesigngroup.com</a>>
wrote:<br>
> <br>
> Someone reached out to me who had a PV system
installed two years ago by another contractor on her
shingle roof. Almost immediately it started having loud
popping noises intermittently, but pretty consistently day
to day. The homeowner thought it sounded like expansion
and contraction. That made sense, so the original
contractor came back multiple times to tighten things up.
The problem never went away and lasted about 6 months
until it was driving her crazy and she had the panels only
removed. The sounds stopped. Legal proceedings ensued.
Everything was dropped and she now has rails up, panels in
garage, and no clamps.<br>
> <br>
> The panels have been in her garage for 18 months. I
went to inspect today. She has Quickmount LMount
flashings, Ironridge XR100 rails and had UFOs. The UFOs
were tightened so much that they were tearing the t-bolts
out of the top channel of the rail. I don't know if that
was from the original installation or after they came back
to try to resolve the issue. The UFOs had also dug in
pretty deeply to the top of the module frames. None of the
glass was broken.<br>
> <br>
> I could not find much evidence of module frames
slipping on the rails and causing marks. The flashings and
L-feet are all properly installed in trusses at 48 or
24-in centers. The square bolts securing the L-feet to
rails are all tight and show no evidence of slippage. The
attic looks great. 5/8 ply over manufactured trusses
(southern pine). It's a Gable roof with about 20 feet eave
to ridge. Again, everything looks great in the attic.<br>
> <br>
> There are two rows of panels. I thought maybe the two
rows were rubbing on each other. But I could not find any
evidence on the short sides of the modules that would
suggest this was the problem.<br>
> <br>
> Has anyone seen this issue before? I'm thinking about
putting a few test panels back up with standard mid clamps
rather than UFOs just to see if that changes anything. <br>
> <br>
> Jason Szumlanski<br>
> Florida Solar Design Group<br>
> _______________________________________________<br>
> <br>
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