If an inspection or test carried out by an inspection service provider on a lift, escalator or passenger conveyor shows that any defect or weakness exists whereby persons are endangered, the inspection service provider shall report such defect or weakness forthwith to the user, the competent lift service provider and the provincial director, and no person shall be conveyed or allowed to be conveyed in or on such lift, escalator or passenger conveyor until such defect has been rectified to the satisfaction of the inspection service provider.