Scrub the rusty portions of the fan with a stiff, wire-bristled brush. Work until the rust is gone or until you can’t remove any more.
Wet the rusted portion of the chrome if the rust is still visible. Wet an old toothbrush.
Dip the wet toothbrush into lemonade powder. The acid powder will help eat away the alkaline rust stain.
Scrub the lemonade powder into the rust until it is gone.
Soak a clean cloth in clear water and rub it over the area. Dry it completely with a clean cloth.