Juniper EX9214 Hardware Manual
Download Hardware manual of Juniper EX9214 Network Router, Switch for Free or View it Online on All-Guides.com.
Brand: Juniper
Category: Network Router , Switch
Type: Hardware manual for Juniper EX9214
Pages: 372
for the first time. Applying installation torque to the nuts when they are
improperly threaded can damage the terminal stud.
CAUTION: The maximum torque rating for the terminal studs on the DC
power supply is 36 lb-in. (4.0 Nm) Excessive torque can damage the
terminal studs. Use only a torque-controlled driver or socket wrench to
tighten the nuts on the DC power supply terminals.)
9. Route the power cables along the cable restraint toward the left or right corner of the
chassis. If needed, thread plastic cable ties, which you must provide, through the
openings on the cable restraint to hold the power cables in place.
10. Replace the clear plastic cover over the terminal studs on the faceplate.
11. Verify that the power cabling is correct, that the cables are not touching or blocking
access to switch components, and that they do not drape where people could trip on
them.
12. Switch on the dedicated customer site circuit breakers. Follow your site's procedures
for safety and to prevent ESD damage (see “Prevention of Electrostatic Discharge
Damage” on page 329).
NOTE: The DC power supplies in slots PEM0 and PEM1 must be powered
by dedicated power feeds derived from feed A and the DC power supplies
in slots PEM2 and PEM3 must be powered by dedicated power feeds
derived from feed B. This configuration provides the commonly deployed
A/B feed redundancy for the system. For information about connecting
to DC power sources, see “DC Power Supply Specifications for EX9214
Switches” on page 99.
13. Verify that the INP0 OK or INP1 OK LED on the power supply are lit green steadily. If
you are using two feeds, verify that both INP0 OK and INP1 OK LEDs on the power
supply are lit steadily in green. The INP0 OK and INP1 OK LEDs are lit in amber color if
the voltage at the input is in reverse polarity. Check the polarity of the power cables
to fix the condition.
14. On each of the DC power supplies, switch the DC circuit breaker to the center position
before moving it to the On (|) position.
NOTE: The circuit breaker might bounce back to the Off (O) position if
you move the breaker too quickly.
161Copyright © 2017, Juniper Networks, Inc.
Chapter 12: Connecting the Switch to Power