Steam irons must be properly maintained. In order to avoid the iron dragging as you move it and to escape from the residue getting collected on the soleplate, you should keep cleaning the soleplate of the iron and the steam vents where residues tend to collect.
1. White Vinegar
White vinegar is a very good agent in removing scale that may have accumulated inside the iron. Pour white vinegar or equal parts of vinegar and water in the water reservoir of your iron until it is full up to one-third. Let it steam for about 5-10 minutes on medium-high heat setting to enable the vinegar to evaporate.
2. Baking Soda
Take 1 tablespoon of water and 2 tablespoons of baking soda and mix them together in a small bowl for the mixture to become a paste. Ensure that no water remains in it. With the help of a spatula spread the paste onto the iron and focus on areas with particularly sturdy build-ups. The steam vents should be coated as well. The paste should not be too thick, just lay it enough to evenly coat the soleplate.
3. Common Salt
Common salt is very effective and helps in removing dirt and materials such as nylon or plastic. Place a lump of salt on top of a paper towel and run the iron while hot over it to remove dirt stains. The dirt gets attracted to salt which in turn leaves the iron clean.
Keep rubbing the soleplate with white toothpaste until the dirt gets loosened. Then wipe it off with a dry cloth. In within minutes you can remove dirt and other material from your iron.
5. Dryer Sheets
Gently rub a few dryer sheets over the bottom of your iron. The setting of the iron should be turned on low at that time. Keep rubbing until you remove the accumulated dirt and grime. Towards the end again iron on a clean rag to remove any traces of residue from the dryer sheets.