Installing Power Supplies; Before You Begin; Inserting The Power Supply - Cisco Catalyst 6840 Series Hardware Installation Manual

Installing and Removing Power Supplies

Installing Power Supplies

You follow the same steps to install the AC-input and DC-input power supplies, but you must ground them
differently.

Before You Begin

• The switch chassis must be installed in a cabinet or rack that is secured to the data center.
• Remove the power supply from its shipping container and remove any packaging.
• You need the following additional tools and equipment:

Inserting the Power Supply

To insert the power supply into the chassis, follow these steps:
Procedure
Step 1 Remove the blank cover and store it for future use.
Step 2
Verify that the power supply is not connected to any power sources.
Step 3 Hold the handle on the power supply with one handand position the power supply with its back end at the
open power supply bay. See the figure for an example (AC power supply is shown as an example, DC power
supply can be installed in the same way).
Step 4
Slide the unit all the way into the power supply bay until the release latch on the front of the power supply
clicks and prevents you from moving the power supply in or out of the chassis.
• Nut driver attachment for number 1 Phillips-head screwdriver or ratchet wrench with torque capability
(used only for DC-input power supplies).
• For the DC-input power supply, you need four power cables sized to reach the DC power source or
power interface unit (PIU).
• Grounding wire — Size this wire to meet local and national installation requirements. For U.S.
installations, you must use a 8-24 AWG copper conductor. For installations outside the U.S., consult
your local and national electrical codes. The length of the grounding wire depends on the proximity
of the switch to proper grounding facilities.
Catalyst 6840-X Switch Series Hardware Installation Guide
Installing Power Supplies
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