Removing The Failed Pfu - Cisco ASR 5000 Installation Manual

Removing the Failed PFU

• Check the cables from the power source to the rack for continuity.
• If a fuse panel is installed between the Power Distribution Frame (PDF) and the chassis, verify that the
• If a fuse panel is installed between the PDF and the chassis, check the cables from the fuse panel to the
Removing the Failed PFU
In the event of a PFU failure, follow these instructions to safely remove the PFU from the chassis.
Step 1 Power down the PFU by flipping the circuit breaker on the PFU to the OFF position. If the circuit breaker on your PFU
is equipped with a locking clip, move the clip to the right to unlock the circuit breaker's actuator.
Step 2 Shut down the power source to the failed PFU.
To avoid the risk of electric shock, verify that the power source is completely shut down before proceeding to the next
step.
Vor dem naechsten Schritt Spannungsversorgung abschalten, um einen elektrischen Schlag zu vermeiden.
Step 3
Use a Phillips #2 screwdriver to remove the plastic cover from the power terminals.
Step 4 Remove the cable from the -VDC terminals as described below. The -VDC terminals are the two terminals located at
the bottom of the PFU.
a) Use a 9/16-inch nut driver or socket wrench to remove the nuts and washers that secure the cable to the PFU.
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fuses are intact.
chassis for continuity.
Replacing a Power Filter Unit