Push your bed hardly to let it sitting on the pegs, you can loose pegs screws a little, looking at third picture attached your bed is not inserted correctly on the pegs
Thanks Mark82...but I can confirm that my printing plane is perfectly fixed in the correct position...the condition you can see in the third picture happen when, during the auto calibration, the extruder try to find the fourth point but it goes out from the contact area so it do not find the stop contact and push the plane making what you see in the picture (for this reason I had to turn off the printer and move manually the extruder to put everything in the correct condition)...This happens because of the loosing alignment of the rail of the extruder.
Thanks anyway ;)
1) From October to now I had to/wanted to replace the Perforated Surface because, as you see in the picture named "plane.jpeg", it is deformed (by removing the screws the Perforated Surface lifts approximately 3-4mm in the center than at the corners);2) Both with the old and the new Perforate Plane it has been the problem that the diffuser of the fan touches the electrical connector of the plan (as seen in photo named "contact_1.jpeg" and "contact_2.jpeg" ). Despite this happens only for the first layers of the press, this limits the possibility to fully use the print area;
For #1, just follow Zortrax's guide for cleaning under the pref board and you won't have that problem. When you remove the board, you should slightly bend it so that the center does not lift up.
For #2, you shouldn't have that problem if the platform is level. My fan is not low enough to touch the connector unless it was crooked. If it still touches then they must have changed the size of the connector or lowered the fan on new printers.
Or the nozzle is too short… That can make you hit the connector, too.
In general I would say all this is a case for support. That the print head can’t reach the corner for the cal is not normal and they should repair/replace your printer under warranty.
Please follow the instructions at http://support.zortrax.com/hc/en-us/articles/201315441-Eliminating-Layers-Displacement , it should solve your problem with leveling.
Thank you all for your answers .
I will try to contact the Support of Zortrax to understand what they tell me about my problems… At the same time I will try the solution for the alignment of the rails of the extruder…not to leave anything to chance!
For the moment with the new Perforate Plan it prints well ... I have to try a large print to assess whether returns detachment of the model as it happened before ... but the problem of the contact of the extruder during the automatic alignment remained .. I realigned manually and now it's ok ... I'll try also to understand how quickly loses again the alignment of the rails. ;)
I will keep you updated. ;)
Thank you. :)