1. In any case where the department refuses to issue a certificate of registration or special certificate, or in any case where it shall issue any order requiring certain things to be done, or revoking or suspending any certificate, it shall set forth its reasons and shall state the requirements to be met before such certificate will be issued or such order will be modified or changed. Any order made by the department pursuant to the provisions of this chapter shall be served upon the interested persons by certified mail or in person.
2. Any order of the department or any refusal to issue, revocation or suspension of any certificate shall be subject to judicial review in accordance with chapter 17A.