Yes, Patterson is contractually obligated by Sirona to provide service and support to any CEREC systems originally sold in the United States.
*The only units that you can be declined service and support are units that were originally sold in Germany. Rather ironic, as all of these units are manufactured in Germany in the first place.
Yes, any CEREC system originally sold in the United States is eligible for the service club, as long as the unit you have was not a former trade-in unit or originally sold in Germany (those units have the Y & Z reversed on the keyboard). Patterson may require a “joiner’s fee” if the previous owner’s service club has been terminated for some time. I understand there is a one time fee of $1500.00. Contact your local branch to find out the exact fees. If your a "whale" account (do big volume) with them, I'm sure they will accommodate you with no fees.
Yes, your CEREC is guaranteed to arrive in 100% working condition unless otherwise disclosed. Sirona factory warranty is transferable to you, if you sign up for the service club (monthly fee). Factory warranty is now 7-years from the date of installation. If you are purchasing a unit from a the Network you will want to view the listing for warranties or discuss any direct warranties offered with the seller.