Summarize:

Buildup of grime and dirt can, over time, cause your steamer machine to function less effectively. If you simply take a few moments to wipe down the outside of the steamer with a damp washrag, this can help prevent future damage and extend the life of your steamer.  Try to remember to wipe down the exterior of the steamer after every use for best results. You should also wipe the steamer down if it has been stored for a long period of time without being used. After you use the steamer, you should rinse the machine out with fresh water. This will help prevent sediment buildup on the inside of the steam cleaner and keep your machine fresh for longer. Do this after each time you use the steamer to make sure your machine stays as clean as possible. Whenever you aren’t using the steamer, you should store it in a cool, dry place to prevent any mildew or mold from forming. You should try to cover the steamer with plastic so that the amount of dust that settles on the machine is minimal. Storing your steamer properly will help prolong the life of your machine.
Wipe down the outside regularly. Rinse the steamer with fresh water after each use. Store the steamer properly.