CAUTION: Before you connect power to the device, a licensed electrician
must attacha cable lug to the grounding and power cables that you supply.
A cable with an incorrectly attached lug can damage the device (for
example, by causing a short circuit).
To meet safety and electromagnetic interference (EMI) requirements and
to ensure proper operation, you must connect the chassis to earth ground
before you connect it to power. For installations that require a separate
grounding conductor to the chassis, use the protective earthing terminal
on the device chassis to connect to the earth ground. For instructions on
connecting earth ground, see “Connecting Earth Ground to a QFX3500
Device” on page 264. A QFX3500 device gains additional grounding when
you plug the power supply in the device into a grounded AC power outlet
by using the AC power cord appropriate for your geographical location (see
“AC Power Cord Specifications for a QFX3500 Device” on page 147).
•
Install the power supply in the chassis. For instructions on installing a power supply in
a QFX3500 device, see “Installing a Power Supply in a QFX3500 Device” on page 362.
NOTE: Each power supply must be connected to a dedicated power source
outlet.
To connect AC power to a QFX3500 device:
1. Attach the grounding strap to your bare wrist and to a site ESD point.
2. Ensure that the power supplies are fully inserted in the chassis and the latches are
secure. If only one power supply is installed, ensure a that blank cover panel is installed
over the second power supply slot.
3. Locate the power cord or cords shipped with the device; the cords have plugs
appropriate for your geographical location. See “AC Power Cord Specifications for a
QFX3500 Device” on page 147.
WARNING: Ensure that the power cord does not block access to device
components or drape where people can trip on it.
4. Insert the coupler end of the power cord into the AC power cord inlet on the AC power
supply faceplate.
5. Push the power cord retainer onto the power cord (see Figure 77 on page 267).
Copyright © 2012, Juniper Networks, Inc.266
QFX3000 Hardware Documentation
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