Chapter 2 Preparing for Installation
Safety with Electricity
Safety with Electricity
Most Cisco XR 12404 Router field replaceable units (FRUs) support online insertion and removal (OIR), which means an FRU is
Installation Site Requirements
This section provides site requirement guidelines that you must consider before installing the Cisco XR 12404 Router.
Rack-Mounting and Ventilation Guidelines
Before installing the Cisco XR 12404 Router in a rack, consider the following general
As you face the rear of the chassis, the fan tray assembly is located on the right side. Air flow to the air filter and fan tray assembly should not be blocked.
Note Warm air exhaust at the side of the chassis through the fan tray. Allow sufficient air flow by maintaining 6 inches (15.24 CM) of clearance at both the inlet and openings on the chassis.
•A ventilation system that is too powerful in an enclosed rack can also prevent cooling by creating negative air pressure around the chassis and redirecting the air away from the air intake vent. If necessary, operate the router with the rack door open or in an open rack.
•The correct use of baffles inside an enclosed rack can assist in cooling the router.
•Equipment located near the bottom of the rack can generate excessive heat that is drawn upward and into the intake ports of equipment above, leading to possible overheat conditions.
| Cisco XR 12404 Router Installation Guide |
|
