Install The Dc Power Supply Module - Cisco NCS 540 Hardware Installation Manual

Install the DC Power Supply Module

Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement
1030
Follow these steps to remove and replace the DC power supply:
Step 1 Before servicing the power supply, switch off the circuit breaker in your equipment area. As an additional precaution,
tape the circuit-breaker switch in the Off position.
Step 2 Slip on the ESD-preventive wrist strap that is included in the accessory kit.
Step 3 Switch the power supply circuit-breaker switch to the Off (O) position.
Step 4
Pull the terminal block plug connector out of the terminal block head in the power supply. (See the following figure.)
Step 5 Loosen the captive screws on the DC power supply.
Step 6
Grasp the power supply handle. Press the power supply lock towards the left and simultaneously pull the power supply
out from the chassis while supporting it with the other hand.
Install the DC Power Supply Module
This equipment is suitable for installation in network telecommunications facilities and locations where the
NEC applies.
This equipment is suitable for installations utilizing the Common Bonding Network (CBN).
The grounding architecture of this product is DC-Isolated (DC-I) for DC-powered products. DC-powered
products have a nominal operating DC voltage of 48 VDC.
Perform the following procedure to install the power supply module:
1. Ensure that the system (earth) ground connection is made. (See the following figure.)
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 turned 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. 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 (0.62 N-m).
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Replace Power Supply