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Installing the DC Power Supply
SUMMARY STEPS
1. Ensure that the system (earth) ground connection has been made. For ground connection installation
instructions, see the Installing the Chassis Ground Connection section.
2. If necessary, remove the blank power supply filler plate from the chassis power supply bay opening by
loosening the captive installation screws.
3. Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that
power has been removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the
circuit breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.
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.
5. Tighten the captive installation screws of the power supply. The recommended maximum torque is 5.5
in.-lb (.62 N-m).
Cisco NCS 4216 Hardware Installation Guide
34
Installing the Cisco NCS 4216
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