This Tariff Concession Order (TCO) declares that specific cooling machines for computer servers/data centres are eligible for Schedule 4 item 50 tariff treatment, effective 5 April 2011. It applies to machines described by tariff heading 8415.82.00 with a scroll compressor, refrigerant circuit and infrared humidifier. The delegate acts under s269P of the Customs Act 1901 to grant the concession, which remains in force until revoked under ss269SC or 269SD, changing importers' tariff liability and related compliance obligations.