H3C Technologies H3C SecPath F1000-E - Manual (Page 28)

20
Figure 25 Cage nuts installed
3. Align the screw holes in one mounting bracket with the screw holes in the side panel of the
chassis, and use screws to attach the mounting bracket to the firewall, as shown in
Figure 19 .
4. Supporting the bottom of the firewall with one hand and holding the firewall with the other hand,
slide the firewall into the rack, as shown in
Figure 21 .
5. Attach the firewall horizontally by fastening the mounting brackets to the rack with appropriate
pan head screws.
The diameter of pan head screws cannot exceed that of M6 screws, and rustproof treatment has
been made to their surfaces.
Grounding the firewall
WARNING!
Correctly connecting the firewall grounding cable is crucial to lightning protection and EMI protection.
The power input end of the firewall has a noise filter, whose central ground is directly connected to the
chassis to form the chassis ground (commonly known as PGND). You must securely connect this chassis
ground to the earth so the faradism and leakage electricity can be safely released to the earth to
minimize EMI susceptibility of the firewall.
Attaching the ring terminal
1. Cut the grounding cable as appropriate for connecting to the grounding strip.
2. Peel 5 mm (0.20 in) of insulation sheath by using a wire stripper, and insert the bare metal part
through the black insulation covering into the end of the ring terminal.