Please refer to the terms and conditions in your manual. If you have bought a domestic machine, it is highly likely that it will either not be covered if used commercially, or there may be a 60 or 90 days warranty period. If you have bought a professional machine, there is usually a warranty period. Again, please refer to your owner's manual.
If you have misplaced your manual, either type in the made and model of your machine and the word 'manual' into a search engine and it should pull up the required manual or look on the manufacturer's website, where manuals can usually be downloaded.