•
Ensure that you have taken the necessary precautions to prevent electrostatic discharge
(ESD) damage (see “Prevention of Electrostatic Discharge Damage” on page 198).
•
Ensure that you have connected the device chassis to earth ground.
CAUTION: Before you connect power to the device, a licensed electrician
must attacha cable lug to the grounding and powercables 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 84 or Connecting Earth Ground to QFX3600 or QFX3600-I
Devices. The device gains additional grounding when you plug the power
supply in the device intoa grounded ACpower outlet by using the AC power
cord appropriate for your geographical location (see “AC Power Cord
Specifications for a QFX Series Device” on page 56).
•
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 125.
For instructions on installing a power supply in a QFX3600 or QFX3600-I device, see
Installing a Power Supply in a QFX3600 or QFX3600-I Device.
NOTE: Each power supply must be connected to a dedicated power source
outlet.
To connect AC power to a QFX3500, QFX3600, or QFX3600-I 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
QFX Series Device” on page 56.
WARNING: Ensure that the power cord does not block access to device
components or drape where people can trip on it.
Copyright © 2017, Juniper Networks, Inc.86
QFX3500 Device Hardware Documentation
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