What to say to estranged father?

I am going on 32 and never met my Biological father. My Mom has told me very little about him, however from what I do know his family most likely does not know about me. I know he owns a business in a neighboring state and I know the business information and I recently found out he has a Facebook page. I have been considering reaching out to him. I do not want anything other than to connect with him and get to know him if he wants the same. I do understand he might not, however I feel like it is worth a try. How should I go about this? What should I say to open the conversation?