If your Clock is not powered for more than 2 years, this will cause the battery maintaining the time in the Real-time Clock IC to go flat. 

In order to change the Real-time Clock's coin cell, you will need:

• A Flat screw-driver

• A 5.5mm socket and driver

• A BR2325 Coin Cell

1. Turn the power to the CapeClock off.

2. Remove the CapeClock from the wall (if you have already mounted it) by loosening the two mounting screws at the bottom of the clock sufficiently to remove the clock off the bracket that is mounted on the wall. Take care, because when the clock is pulled from the screws holding it to the wall-mounted bracket, it will have nothing holding it up. To remove it from the wall-mounted bracket completely, gently lower it, taking care that any wires that are already connected are not strained.

3. Place the CapeClock face-down on a protective cloth so that the readers and front are not scratched. Remove the Back-plate by removing the 4 galvanized nuts that keep it attached to the CapeClock box.

4. Remove the coin cell from its holder (you can gently prize it out with a flat screw-driver) and insert the new coin cell.

5. Attach the Back-plate to the CapeClock box using the 4 galvanized nuts.

6. Replace the CapeClock back onto its wall bracket, ensuring that the tongue of the back-plate is inserted into the corresponding groove in the wall-mounted bracket. Secure the CapeClock onto the wall-mounted bracket (see Figure 3) with the 2 Mounting screws at the bottom of the CapeClock, ensuring that the cable cover plate (see Figure 4) is correctly positioned.

Figure 2: CapeClock Back-plate and PCB showing the coin cell position.

Figure 3: Wall-mounting bracket for the CapeClock	Figure 4: Cover-plate for the CapeClock