Lubricate and clean axes:
Periodically, according to the Maintenance Alerts via LCD screen, it is recommended to clean and grease the axes of the BCN3D printers with the lubrication kit to ensure a smooth and precise performance of its mechanical components. 

Clean the hotend:
To ensure an optimal printed parts, it is important to maintain the hotends correctly. Maintenance of the inside of the hotend should be performed once every month, every time you switch materials or if the nozzle is clogged.

Installing shims:
Shims are elements that mechanically correct the Z offset when printing in Mirror or Duplication mode. In these modes both toolheads work simultaneously, so it is key important to make sure both nozzle tips are exactly at the same height.

Change the hotend:
The maintenance kit includes 2 0,4mm e3D hotends. It is recommended to install a new hotend when you do not get a clean hotend when performing the “Nylon Cleaning Method” described on the “Clean the hotend” process.