Thanks for that.
Unfortunately Fagor don't appear to have a manual for your appliance online.
As I don't have access to the manual I can only give general advice on this.
Open the oven door and look at how the hinges lock.
Either a disc on the door has to be turned, a loop from the bottom to top part of the hinge to be linked or a U shaped piece of metal to be flipped over.
Lock the hinges, lift the door as if to close it and it will lift out of the oven receivers.
Once you have the door out, take out the screws on the underside and you should be able to take the door apart.
If your door is different, post a photograph of the door and hinges and I'll see if I can figure out how they work.
Hope this is of some help.
Let me know how it goes or if you need more help.