Disconnecting An Mx240 Dc Power Supply Cable; Connecting An Mx240 Dc Power Supply Cable - Juniper mx240 Hardware Manual
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Also See for mx240:
- Hardware manual (512 pages) ,
- Instruction for upgrading (35 pages) ,
- Quick start manual (31 pages)
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Disconnecting an MX240 DC Power Supply Cable
Connecting an MX240 DC Power Supply Cable
Copyright © 2016, Juniper Networks, Inc.
WARNING:
Before performing DC power procedures, ensure that power is
removed from the DC circuit. To ensure that all power is off, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the off position, and tape the switch handle of the circuit breaker
in the off position.
To disconnect a power cable for a DC power supply:
Switch off the dedicated customer site circuit breaker for the power supply being
1.
removed. Follow your site's procedures for ESD.
Make sure that the voltage across the DC power source cable leads is 0 V and that
2.
there is no chance that the cables might become active during the removal process.
Verify that the
INPUT OK
3.
Remove the power cable from the external DC power source.
4.
Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
5.
ESD points on the chassis.
Switch the DC circuit breaker on the DC power supply faceplate to the off (
6.
Remove the clear plastic cover protecting the terminal studs on the faceplate.
7.
Remove the nut and washer from each of the terminal studs. (Use a 7/16-in. [11 mm]
8.
nut driver or socket wrench.)
Remove the cable lug from the terminal studs.
9.
Carefully move the power cable out of the way.
10.
WARNING:
Before performing DC power procedures, ensure that power is
removed from the DC circuit. To ensure that all power is off, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the off position, and tape the switch handle of the circuit breaker
in the off position.
To connect a power cable for a DC power supply:
Locate a replacement power cable that meets the specifications.
1.
Verify that a licensed electrician has attached a cable lug to the replacement power
2.
cable.
Verify that the
3.
INPUT OK
Chapter 26: Replacing Power System Components
LED on the power supply is not lit.
LED is off.
O
) position.
323
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