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Install a Power Supply in a QFX5120 Switch

 

Each power supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can remove and replace it without powering off the switch or disrupting switch functions.

Caution

Do not mix:

  • AC and DC power supplies in the same chassis.

  • 650-W and 850-W power supplies in the same QFX5120-48T chassis.

  • Power supplies with different airflow directions in the same chassis.

  • Power supplies and fan modules with different airflow directions in the same chassis.

Before you install a power supply:

  • Ensure that you understand how to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that you have the following parts and tools available:

    • ESD grounding strap—not provided

    • Number 2 Phillips (+) screwdriver—not provided

Note

You must connect each power supply to a dedicated power source outlet.

To install a power supply in the switch:

  1. Ensure that you have the correct power supply.

    If you are installing a power supply with a red handle in a QFX5120-32C switch, verify that the label on the fan module installed is F2B. If you are installing a power supply with a blue handle in a QFX5120-32C switch, verify that the label on the fan module installed is B2F.

    If you are installing a power supply with a Juniper Gold handle in a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch, verify that the label on the fan module installed is AIR OUT. If you are installing a power supply with a Juniper Azure Blue handle in a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch, verify that the label on the fan module installed is AIR IN.

  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the switch.
  3. Taking care not to touch power supply pins, leads, or solder connections, remove the power supply from the bag.
  4. Using both hands, place the power supply in the power supply slot on the rear panel of the switch and slide it in until it is fully seated and the ejector lever fits into place.

    Figure 1 shows how to install an AC power supply in a QFX5120-32C switch and Figure 2 shows how to install a DC power supply in a QFX5120-32C switch.

    Figure 3 shows how to install an AC power supply in a QFX5120-48T or QFX5120-48Y switch. The procedure to install a high-voltage power supply is the same as the procedure to install an AC power supply in a QFX5120-48T switch. Figure 4 shows how to install an AC power supply in a QFX5120-48YM switch. Figure 5 shows how to install a DC power supply in a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch.

    Figure 1: Install an AC Power Supply in a QFX5120-32C Switch
    Install
an AC Power Supply in a QFX5120-32C Switch
    Figure 2: Install a DC Power Supply in a QFX5120-32C Switch
    Install
a DC Power Supply in a QFX5120-32C Switch
    Figure 3: Install an AC Power Supply in a QFX5120-48T or QFX5120-48Y Switch
    Install an AC Power Supply in a QFX5120-48T or QFX5120-48Y Switch
    Figure 4: Install an AC Power Supply in a QFX5120-48YM Switch
    Install
an AC Power Supply in a QFX5120-48YM Switch
    Figure 5: Install a DC Power Supply in a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch
    Install a DC Power Supply in a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM
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