Prusa Research MMU3 Manual Del Usuario página 17

PASO 3 Disconnecting the PTFE tubes
Unscrew the Festo fittings QSM-M5 from both the printer and the MMU unit. If the
fittings are tight, you can use the Unikey or an 8mm wrench.
Keep the PTFE tube with the fittings aside for disassembly later.
We will have to disconnect the buffer from the MMU unit.
Loosen all the screws on the buffer securing the PTFE tubes connected to the
MMU unit. Remove all five tubes by pulling them out.
Keep the buffer for a later disassembly in the next chapter.
On the back of the MMU unit, slightly loosen the four screws holding the rear-PTFE
holder.
Remove all five PTFE tubes and dispose of them immediately. These tubes will
not be used again for MMU3.
MMU3 is designed to work with differently-sized PTFE tubes. Reusing MMU2S
tubes during the assembly of MMU3 will result in incorrect operation.
PASO 4 Disconnecting the MMU2S (part 1)
Loosen the M3x40 screw on the printer's electronics box.
Open up the electronics box.
From the MMU, you'll see a data cable along with two power cables, all connected
to the Einsy control board of the printer.
Never move, connect, or disconnect cables while the printer is powered on. Doing
so can cause damage to the electronics.
Begin by disconnecting the MMU data cable.
Be careful not to disconnect the Filament sensor cable located just below the
MMU data cable.
2. Desmontaje MMU2S (UPG)
Ensamblaje Original Prusa MMU3 17