Reinstalling the M320 CBs
To reinstall CBs (see Figure 1):
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
- Carefully align the sides of the CB with the guides inside the chassis.
- Slide the CB into the chassis, carefully ensuring that it is correctly aligned.
- Grasp both ejector handles and press them inward to seat the CB.
- Tighten the captive screws on the ejector handles, using a Phillips (+) screwdriver, number 2.
- Repeat the procedure to reinstall the remaining CB.
Figure 1: Reinstalling a CB

