Cisco 2821 - Integrated Services Router Unified Communications Bundle Panduan Memulai Cepat - Halaman 17
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The router must be mounted with the power connections oriented downward. Failure to do so could present a fire
Caution
hazard.
Installing the Router on a Desktop
If you install your Cisco 2800 series router on a desktop, observe the following precautions:
For Cisco 2801 routers, attach the four rubber feet to the bottom of the chassis.
Note
Caution
Your chassis installation must allow unrestricted airflow for chassis cooling. For placing the router on a desktop,
keep at least 1 inch (2.54 cm) of clear space beside the cooling inlet and exhaust vents.
Do not place any items that weigh more than 10 pounds (4.5 kilograms) on top of the chassis, and do not stack
Caution
routers on a desktop.
Grounding the Chassis
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of
a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if
you are uncertain that suitable grounding is available. Statement 1024
Warning
During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the
backplane with your hand or any metal tool, or you could shock yourself. Statement 94
Note
This equipment is suitable for installation in Network Telecommunications Facilities and locations where the NEC
applies. The equipment is suitable for installation as part of the Common Bonding Network (CBN).
You must connect the chassis to a reliable earth ground; the ground wire must be installed in accordance with local electrical
safety standards.
• For NEBS-compliant grounding, use size 6 AWG (13 mm
• For NEC-compliant grounding, use size 14 AWG (2 mm
terminal with an inner diameter of 1/4 in. (5-7 mm).
• For EN/IEC 60950-compliant grounding, use size 18 AWG (1 mm
ring terminal.
Warning
This equipment needs to be grounded. Use a green and yellow 14 AWG ground wire to connect the host to earth
ground during normal use. Statement 190
To connect the chassis to a reliable earth ground, perform the following steps:
Step 1
Strip one end of the ground wire to the length required for the ground lug or terminal.
• For the NEBS ground lug—approximately 0.75 inches (20 mm)
• For user-provided ring terminal—as required
2
) copper wire and the ground lug provided in the accessory kit.
2
) or larger copper wire and an appropriate user-supplied ring
2
) or larger copper wire and an appropriate user-supplied
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