Hearings and notice of order suspending, terminating, prohibiting or denying sales or registration. The Administrator may summarily issue an order prohibiting, suspending, terminating or denying the sale of a franchise or registration of a franchise or franchise broker if such order is within the public interest and Section 22 of this Act, provided the Administrator shall promptly notify the person or entity affected, in writing, of the entry of an order under this Act and of the reasons therefor. Upon receipt of a written request from such person or entity, the matter will be set down for hearing to commence within 10 days after such receipt unless the franchisor, or franchise broker consents to a later date. If a hearing is not requested within 15 days from the date of the order and none is ordered by the Administrator, the order will remain in effect until it is modified or vacated by the Administrator. If a hearing is requested or ordered, the Administrator, after notice and hearing, may modify or vacate the order or extend it until its final determination.