•
Ensure that the airflow direction of the power supply is the same as the chassis. Labels on the power
supply handle indicate the direction of airflow. See Cooling System and Airflow for a QFX3500 Device for
more information.
•
Ensure that you have the following parts and tools available to install a power supply in a QFX3500
device:
•
ESD grounding strap
To install a power supply in a QFX3500 device (see Figure 160 on page 454):
1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
2. Taking care not to touch power supply components, pins, leads, or solder connections, remove the
power supply from its bag.
CAUTION: Verify that the direction of the arrow on the power supply handle
matches the direction of airflow in the chassis. Ensure that each power supply you
install in the chassis has the same airflow direction. If you install power supplies
with two different airflow directions, Junos OS raises an alarm, and the status (OK/!)
LED blinks amber.
3. Using both hands, place the power supply in the power supply slot on the front panel of the device
and slide it in until it is fully seated and the locking lever slides into place.
Figure 160: Installing a Power Supply in a QFX3500 Device
NOTE: Each power supply must be connected to a dedicated power source outlet.
454
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