Prusa i3 MK2S KIT - P EI P Rint S Urface P Reparation

There are few special occasions where you will need to redo the calibration or part of it.
● Firmware update - Complete guide is in the chapter 11.8 Updating printer firmware.
6.3.9. First layer calibration needs to be rerun otherwise the printer will show an error
message.
● Replacing the PEI/Ultem sheet - When PEI is changed (guide is at
manual.prusa3d.com), whole heated bed is removed and reassembled. This might
change geometry of the printer and the whole KIT calibration flow should be
followed even on the pre assembled printer.
● Readjusting the P.I.N.D.A. probe - Run 6.3.6 Calibrate Z to store new reference Z
height values.
It is important to disconnect the printer USB from any computer or OctoPrint running
on RaspberryPi for the whole calibration. Printer will not respond to any request
from the host and communication will timeout, when host resets the connection, the
printer restarts and might end up in weird state requiring 7.2.3 Factory Reset.
6.3.2 PEI print surface preparation
To achieve the best adhesion on the new surface, it is important to keep the surface clean.
Cleaning of the surface is very easy. The best option is Isopropyl alcohol available in
drugstores which is the best for ABS, PLA and others (except for PETG where the adhesion
may be too strong. See the chapter 11.3 PET for instructions). Pour a little amount on
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