This mounting bracket is used for placing any one of the units inside the wall, therefore bringing the front panel flush with the wall. It is included with each new Boardroom Model
There are three replaceable parts in lighting the Geochron; the starters, ballasts, and the fluorescent lamps. Procedures for replacing and trouble shooting are in this guide.
It could be two years since you've last set the Geochron and the power has gone out, this document will help you get your Geochron in synchronization with the world again.