[RE-wrenches] Cleaning PV mods

Mon Oct 23 09:02:12 PDT 2023

A customer of mine has both hot and cold water plumbed to his outdoor hose
spigots, similar to an indoor sink, so he can clean anything outside with a
warm to hot mix if necessary. Obviously better cleaning than cold alone.

On Mon, Oct 23, 2023 at 9:45 AM White, Will via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I worked with a guy who had done installs in Arizona. He had an off-grid
> customer spray down their array with cold well water in the middle of the
> day, which shattered the module glass.
>
>
>
> I’m sure it was an isolated incident, but it happened.
>
>
>
> Thanks,
>
> Will
>
>
>
> *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Friday, October 20, 2023 4:47 PM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
> *Cc:* Jason Szumlanski <jason at floridasolardesigngroup.com>
> *Subject:* [EXTERNAL] Re: [RE-wrenches] Cleaning PV mods
>
>
>
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>
>
> I don't understand the thermal shock nonsense. It routinely starts
> downpouring here when it's blazing hot out (sun showers) and the rain is
> way cooler than ground water in summer. It makes no sense. If hose water
> from the ground is going to hurt solar panels, you better not put them
> where it rains!
>
>
>
> I replied privately to Dana, but for the benefit of the group, it takes a
> heavy soiling to make any appreciable difference. I have done numerous
> tests at times of high pollen and found little to no benefit to cleaning
> solar panels. Certainly it would not be worth paying someone to do it.
> Other climates may have different results. My suggestion would be to test
> first. Module level power electronics can provide incontrovertible proof.
>
>
>
> Jason
>
>
>
>
>
> On Fri, Oct 20, 2023, 4:21 PM Dave Tedeyan via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Hi Dana,
>
>
>
> See attached from REC. I would imagine these guidelines would apply to all
> modules.
>
> Cheers,
>
> Dave
>
>
>
> On Fri, Oct 20, 2023 at 3:56 PM Dana Orzel via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Hey ally ‘all,
>
>
>
> Ok bad solar installer! 7 years & I have never cleaned my modules & live
> on a dirt road. Yeah rain does a good job with the dust but there is a film
> mostly on the edges.
>
>
>
> What does everyone do for cleaning?
>
>
>
> My array is 16’+ tall on a hill side. I have a pressure washer & was going
> to pick up a large sponge type mop & mount it on a painters extension pole.
>
>
>
> Good Biodegradable cleaning solutions?
>
>
>
>
>
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