[header] How to clean an iron with salt [title] Turn the iron on. [step] Turn the iron on to the highest setting and let it heat up. It will probably take several minutes for the iron to reach its highest heat level. 
There should be a light indicator on the iron that lets you know when it has reached the desired temperature. [substeps] Remember that the iron will be quite hot, so you should take care not to burn yourself or other objects around you-especially things that could melt, like plastic.