Disconnecting Ac Or Dc Power; Reconnecting Ac Power - Cisco NCS 4009 Installing
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Also See for NCS 4009:
- Installation manual (85 pages) ,
- Hardware installation manual (82 pages)
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Disconnecting AC or DC Power
Disconnecting AC or DC Power
The following sections explain how to disconnect AC or DC power.
Disconnecting AC power
Follow these steps to disconnect an individual AC power cord or to disconnect all AC power from the chassis.
Procedure
Step 1
Set the power switch at the rear of the AC power tray to the OFF (0) position and also power off the circuit
breakers. If you are disconnecting an individual AC power cord, power off the circuit breaker assigned to the
AC power source and untighten the screw that clamps the AC power cord.
Warning
Step 2
Loosen the screws that hold the AC power cords to the power tray receptacle.
This step is applicable only when disconnecting AC power from the chassis.
Step 3
Unplug the AC power cords from the power tray receptacles.
Note
Step 4
Repeat steps 1 to 3, if you want to disconnect another individual AC power source.
Reconnecting AC Power
To reconnect an individual AC power cord to a power tray, see
on page 23
Disconnecting DC Power
Caution
It is not necessary to disconnect all power from the chassis to replace components, including power modules.
Follow these steps to disconnect an individual DC power source from a power tray or to completely disconnect
all DC power from the chassis.
Procedure
Step 1
Set the power tray switch to the OFF (0) postion to disconnect all power from the DC chassis and also power
off the circuit breaker. If you are disconnecting power to one of the power trays, power off the circuit breaker
assigned to the DC power.
Installing Power Components
28
To ensure that power remains off while you are performing this procedure, lock-out/tag-out the
circuit breaker switch in the OFF (0) position until you are ready to turn it on.
Do not turn off the switch on the power tray to remove AC power cords. An individual AC power
cord can be unplugged while the system is powered from other AC power sources.
Installing Power Components
Connecting Power to an AC-Powered Chassis,
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