Cisco Systems 7609 Manuale Utente
Chapter 5 Removal and Replacement Procedures
Removing and Replacing the Power Supply
5-10
Cisco 7609 Internet Router Installation Guide
OL-5079-04
Installing a DC-Input Power Supply
Warning
Before performing any of the following procedures, ensure that power is
removed from the DC circuit. To ensure that all power is OFF, locate the
circuit breaker on the panel board that services the DC circuit, switch the
circuit breaker to the OFF position, and tape the switch handle of the circuit
breaker in the OFF position.
removed from the DC circuit. To ensure that all power is OFF, locate the
circuit breaker on the panel board that services the DC circuit, switch the
circuit breaker to the OFF position, and tape the switch handle of the circuit
breaker in the OFF position.
Note
You must isolate the DC return connection from the system frame and chassis.
Follow these steps to install a DC-input power supply:
Step 1
Ensure that the system (earth) ground connection has been made. For ground
connection installation instructions, see the
connection installation instructions, see the
.
Step 2
Verify that power is off to the DC circuit on the power supply you are installing.
Step 3
Verify that the power switch is in the Off (0) position on the power supply you are
installing. (See
installing. (See
.)
Caution
Use both hands to install and remove power supplies. Each Cisco 7609
Internet Router DC-input power supply weighs between 22 pounds (9.9 kg)
and 28 pounds (12.6 kg).
Internet Router DC-input power supply weighs between 22 pounds (9.9 kg)
and 28 pounds (12.6 kg).
Step 4
Grasp the power supply handle with one hand and place your other hand
underneath the power supply. Slide the power supply into the power supply bay.
Make sure that the power supply is fully seated in the bay. (See
underneath the power supply. Slide the power supply into the power supply bay.
Make sure that the power supply is fully seated in the bay. (See
Step 5
Tighten the power supply captive installation screw. (See
Step 6
Remove the two screws securing the terminal block cover and slide the cover off
of the terminal block. (See
of the terminal block. (See
.)
Step 7
Attach the appropriate lugs to the DC-input wires. The maximum width of a lug
is 0.300 inch (7.6 mm). The wire should be sized per local and national
installation requirements. Use only copper wire.
is 0.300 inch (7.6 mm). The wire should be sized per local and national
installation requirements. Use only copper wire.