Step 5. Turn the controller module over and place it on a flat, stable surface.
Step 6. Open the cover by sliding in the blue tabs to release the cover, and then swing the cover up and
open.
Replacing the RTC battery
To replace the RTC battery, locate it inside the controller and follow the specific sequence of steps.
Step 1. If you are not already grounded, properly ground yourself.
Step 2. Locate the RTC battery.
Chapter 5. Hardware replacement procedures 75