(1) A person who installs a device specified in regulation 8(1)(c) , (d) or (e) at any location must, as soon as practicable after completing the installation, test the device to ensure that it is operating correctly.(2) A person who operates a device specified in regulation 8(1)(c) , (d) or (e) at any location must, as soon as practicable before commencing to operate the device at that location, test the device to ensure that it is operating correctly.(3) A device is taken to be operating correctly for the purposes of this regulation if it is capable of being operated in accordance with regulation 9 .