To maintain your Ultimaker Original+ correctly and keep it running smoothly it is recommended to lubricate the axles once in a while.
When you notice small ridges on the surfaces of your 3D printed objects or feel that the X and Y axles are dry it is advised to put a single drop of sewing machine oil onto the X and Y axles. This will help your Ultimaker Original+ running smoothly. Sewing machine oil is not included in the Ultimaker Original+ package, but we highly recommend to only use this for lubricating the X and Y axles.
Caution: Don't use WD40 as this will affect the coating that is on the axles. We advise to only use sewing machine oil for oiling the axles.
Z trapezoidal leadscrew
Once every half year the Z trapezoidal leadscrew has to be lubricated with Magnalube. This is the green grease that was delivered with your Ultimaker Original+. Make sure to spread 10 drops of grease over the entire threaded rod. With your next print the Ultimaker Original+ will lubricate the axis itself by moving up and down.
Note: Magnalube should be applied to the Z trapezoidal leadscrew only; make sure to not put it on any of the other axes.