Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 271

Chapter 4 Removal and Replacement Procedures
You should allow a minimum of 2.5 to 3 inches (63.5 mm to 76.2 mm) of space between the side of the
Note
power supply and any obstructions (such as the side of an enclosed equipment rack). This space is needed
to install and secure the DC-input power cables correctly. Incorrectly routing the DC-input power cables
can cause airflow blockage into the power supply and inadequate strain relief in the cables. The exact
amount of space required depends upon the gauge and flexibility of the DC-input power cables you are
using.
To install a 6000 W DC-input power supply, follow these steps:
Verify that power is off to the DC circuit that is connected to the power supply you are installing. Place
Step 1
appropriate safety flag and lockout devices at power switch handle to avoid any circuit inputs from
becoming energized.
Use both hands to install and remove power supplies. Each 6000 W DC-input power supply weighs
Caution
35 pounds (16 kg).
Step 2 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 (Figure
Figure 4-46
Step 3 Tighten the power supply captive installation screw (see
OL-5781-08
4-46).
Handling a DC-Input Power Supply
CIS CO SY
ST EM S, INC
1
2
3
INP UT
OK 4
FAN
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OK
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Removing and Installing the DC-Input Power Supplies
Figure 4-47).
Catalyst 6500 Series Switches Installation Guide
4-65