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.
[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.