The installation of the Buenos Aires 20 MV Tandar Facility, including all buildings and services is now totally completed. The accelerator tubes have been installed and vacuum tested. Conditioning of the accelerator tubes has been performed up to a terminal voltage of 16 MV. Beams of 12C 5+ and 197Au 13+ have been successfully run through the machine at voltages of 15.5 MV. Conditioning of the tubes is presently carried out up to a terminal voltage of 17 MV in order to pass acceptance tests designed at this voltage.