Cisco ASR 914 Manual page 27

Installing the Cisco ASR 914 Router
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.
Step 5
Tighten the captive installation screws of the power supply. The recommended maximum torque is 25 in.-lb
(2.82 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.
Tools and Equipment
• Dual-hole lugs
• Double barrel with inspection hole
• Hole spacing is 5/8 in.
• Lug tab width max 0.46 in.
• Nuts
• PSU can accommodate 10 – 6 AWG
• Number 2 Phillips Screwdriver
• 7 mm nut driver or 7 mm socket on a torque wrench
Procedure
Step 1
Locate the terminal block on the power supply unit.
Step 2 Flap open the front protective cover on the power supply unit.
Step 3
Use a wire-stripping tool to strip the ends of each of the two wires coming from the DC-input power source
as recommended by the lug manufacturer.
Note
Step 4
Identify the positive and negative feed positions for the terminal block. The recommended wiring sequence
is as in the figure below.
Step 5
Attach the lugs on the terminal block, see the figure below.
Stripping more than the recommended amount of wire can leave behind exposed wire from the
terminal block after installation.
Connecting DC Power Supply Unit (A900-PWR900-D2)
Installing the Cisco ASR 914 Router
27