Cisco ASR 907 Installing page 31

Installing the Cisco ASR 907 Router
Procedure
Step 1
Ensure that the system (earth) ground connection has been made. For ground connection installation instructions,
see theInstalling the Chassis Ground Connection
Step 2
If necessary, remove the blank power supply filler plate from the chassis power supply bay opening by
loosening the captive installation screws.
Step 3
Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that
power has been removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the circuit
breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.
Step 4
Grasp the power supply handle with one hand. Place your other hand underneath the power supply, as shown
in the figure below. Slide the power supply into the power supply bay. Make sure that the power supply is
fully seated in the bay.
Figure 24: Installing the DC Power Supply
Step 5
Tighten the captive installation screws of the power supply. The recommended maximum torque is 5.5 in.-lb
(.62 N-m).
If you are installing a redundant DC power supply, repeat these steps for the second power source.
Connecting DC Power Supply Unit (A900-PWR900-D2)
The DC power supply accepts a dual-hole type lug. The lug must be a UL Listed, CSA certified and rated to
accept the 8 AWG cable. The lug is assembled on the unit with two nuts.
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Connecting DC Power Supply Unit (A900-PWR900-D2)
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Installing the Cisco ASR 907 Router
31