H3C SecPath F10 0 Series Installation Manual page 18

CAUTION:
• For adequate heat dissipation, ensure a minimum clearance of 80 mm (3.15 in) around the air
inlet and outlet vents of the chassis and a distance of 1U (44.45 mm, or 1.75 in) between the
chassis and other devices in the rack.
• As a best practice, use a rack shelf together with the mounting brackets to support the weight of
the chassis.
The rear mounting brackets can be attached to the rear rack posts with the wide flange inside or
outside the rack.
•
For a rack with a depth (distance between the front and rear rack posts) in the range of 429 to
595 mm (16.89 to 23.43 in), attach the rear mounting brackets to the rear rack posts with the
wide flange inside the rack.
•
For a rack with a depth in the range of 274 to 440 mm (10.79 to 17.32 in), attach the rear
mounting brackets to the rear rack posts with the wide flange outside the rack. To prevent the
rear mounting brackets from obstructing the closing of the rack door, ensure a distance greater
than 153 mm (6.02 in) between the rear rack posts and the interior side of the rack door.
To install the firewall in a standard 19-inch rack:
Wear an ESD wrist strap and make sure the wrist strap makes good skin contact and is reliably
1.
grounded.
Unpack the firewall and accessories.
2.
Mark the cage nut installation positions on the rack posts by using the mounting brackets.
3.
Use a front mounting bracket to mark the positions on the front rack posts and use a rear
mounting bracket to mark the positions on the rear rack posts.
Install cage nuts.
4.
Figure 5 Installing cage nuts
Attach the front mounting brackets and shoulder screws to both sides of the firewall with M4
5.
screws provided with the firewall.
11