Simplex 4100ES Installation Manual page 216

4. Tighten the two mounting screws, but leave a 1/8-inch (3-mm) gap from the seated position of each screw.
5. Using the vertical rails as handles, carefully lift the system electronics bay assembly and the terminal block from the shipping
container.
6. Install the system electronics bay assembly in the back box by carefully placing the rail teardrop holes, located at the top of the
rails, onto the two extended screws in the back box, allowing the electronics bay assembly to hang from the screws. See Figure
139.
Note: Make sure you do not pinch the terminal block wiring behind the rails as you mount the bay assembly in the back box.
page 214
Figure 138: Inserting the Mounting Screws
Figure 139: Installing the System Electronics Bay Assembly
4100ES Fire Alarm System Installation Guide
574-848 Rev. BQ