...residue could be lime deposits from the minerals in your water,or corrosion if metal is aluminum. try CLR cleaner for lime deposits,use a piece of aluminum foil,'crunched' into a ball & dipped in ...
...lime away) to put inside of it. Let the unit sit full of water and chemicals for 24 hours. Flush out the unit to remove any residue. You may see the water is brown if you have a lot of buildup. ...
...Lime-A-Way. Difficult residue Spray residue with Deep Cleaner for DuPont Corian® from Stone Care International. Follow instructions on the bottle. Wash area with soapy water, rinse and wipe ...
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