did u try a good sharp razor scraping across the surface in combination with vinegar....let the vinegar soak for a bit on the surface before trying..this may work if the module glass is not micro textured.<br>good luck.....<br>
<br>-- <br>Sunny Regards,<br>Kirpal Khalsa<br>NABCEP Certified Solar PV Installer<br>Renewable Energy Systems<br><a href="http://www.oregonsolarworks.com">www.oregonsolarworks.com</a><br>541-218-0201 m<br>541-592-3958 o<br>
<br><div class="gmail_quote">On Thu, Dec 30, 2010 at 8:29 AM, Tom DeBates <span dir="ltr"><<a href="mailto:habitek83@yahoo.com">habitek83@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="font: inherit;" valign="top">hello Wrenches,<br> I recently purchased some used modules. Unfortunately, they were mounted near a railroad track and many have a film of rust on the front surface. I have tried a few products; Dawn, Simple Green, vinegar (5% acidity), and Krud Kutter to safely remove the rust. So far the vinegar seems to be best when considering cost, disposal ,etc. But it still takes a good amount of time and "elbow grease". Today I will try CLR. Has anyone else run into a similar situation? If so, what products and/or methods did you use to remove rust stains?<br>
Awhile back I had to remove some urethane caulk from the face of module and had to resort to a solvent-based chemical (acetone....yes, acetone) with disastrous results.....<br>thanks,<br>tom <br><br>Tom DeBates<br>
Habi-Tek<br>
524 Summit St.<br>
Geneva,IL. 60134<br>
630-262-8193<br>
fax 630-262-1343</td></tr></tbody></table><br>
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