When a patient hospitalised in an establishment other than those mentioned in article L. 3222-1 is suffering from a mental disorder as defined either in I of article L. 3212-1 or in article L. 3213-1, the director of the establishment must, within forty-eight hours, take all necessary measures to implement one of the procedures provided for in articles L. 3212-1, L. 3212-3, L. 3213-1 or L. 3213-2.