Remove the hotent protective cap of your 3D printer by unscrewing it.
Remove the protective pin holding the PTFE pipe with the help of pliers.
Pull the Teflon tube by applying pressure to the fitting pin. At this stage, your printer should be heated to a minimum of 200 degrees.
We successfully removed the PTFE pipe. Now make sure that the inside of the hotent is clean.
Place the blue PTFE pipe that comes out of the Co Print box into the hotent with the open end at the top. The end of the PTFE pipe inside the hotent should be pushed strongly up to the nozzle.