When the printer is not used for a long time, apply grease on the guide rail, do it regularly every other month. Put filaments in the drying box to prevent moisture. If it is used frequently, it is recommended to replace HEPA filter cotton once every 2
weeks. Replace as follows:
1.Open the front door of printer, and find the air filter
2. .Open the air filter cover, put in a new cotton filter, and close the filter cover.