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Maintain the QFX5230-64CD Power System

A QFX5230-64CD switch power supply module is a hot-removable and hot-insertable field-replaceable unit (FRU). You can install replacement power supplies without powering off the switch or disrupting the switching function. Note that there should be an active power supply in working condition for you to replace the other power supply without powering off the system.

Remove a Power Supply from a QFX5230-64CD Switch

Before you remove a power supply from a QFX5230-64CD switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

Ensure that you have the following parts and tools available to remove a power supply from a switch:

  • ESD grounding strap
  • Antistatic bag or an antistatic mat

The power supply modules in QFX5230-64CD switches are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace the power supply modules without powering off the switch or disrupting switching functions.

Note:

To maintain proper cooling and prevent thermal shutdown of the operating power supply unit, each power supply slot must contain either a power supply or a blank panel. If you remove a power supply, you must install a replacement power supply or a blank panel shortly after the removal.

Figure 1: Removing an AC Power Supply from a QFX5230-64CD Switch Removing an AC Power Supply from a QFX5230-64CD Switch
The QFX5230-64CD switch is shipped from the factory with two pre-installed power supplies.

To remove a power supply from a QFX5230-64CD switch:

  1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
    Note:

    If only one power supply is installed in your QFX5230-64CD switch, you need to power off the switch before removing the power supply.

  3. Disconnect power to the switch:

    • AC power supply—If the AC power source outlet has a power switch, set it to the OFF (O) position. If the AC power source outlet does not have a power switch, gently pull out the plug end of the power cord connected to the power source outlet.

    • DC power supply—Switch the circuit breaker on the panel board that services the DC circuit to the OFF position. Be sure the LEDs turn off on the power supply that you are removing.

  4. Remove the power source:

    • AC power supply—Remove the power cord from the power supply faceplate by detaching the power cord retainer and gently pulling out the socket end of the power cord connected to the power supply faceplate.

    • DC power supply—Loosen the thumb screws, and disconnect a connector for the power cables or release each of the two cables from the power supply (requires a standard screwdriver).

  5. Slide the locking lever toward the handle until it stops.
  6. Grasp the power supply handle and pull firmly to slide the power supply halfway out of the chassis.
    Figure 2: Removing a DC Power Supply from a QFX5230-64CD Switch Removing a DC Power Supply from a QFX5230-64CD Switch
  7. Place one hand under the power supply to support it and slide it completely out of the chassis. Take care not to touch power supply components, pins, leads, or solder connections.
  8. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
  9. Replace with another power supply module.

Install a Power Supply in a QFX5230-64CD Switch

  • Before you install a power supply in a QFX5230-64CD switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • 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. SeeQFX5230-64CD Cooling System for more information.

To install a power supply in a QFX5230-64CD switch:

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. Take care not to touch power supply components, pins, leads, or solder connections as you 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 (ALM) LED blinks amber.
  3. If the power supply has a protective plastic wrap, peel and remove the plastic wrap from all four sides of the power supply.
  4. Using both hands, place the power supply in the power supply slot on the FRU panel of the switch and slide it in until it is fully seated and the locking lever slides into place.
Figure 3: Installing AC Power Supply in a QFX5230-64CD
Figure 4: Installing DC Power Supply in a QFX5230-64CD Switch Installing DC Power Supply in a QFX5230-64CD Switch
Note:

Each power supply must be connected to a dedicated power source outlet.

Note:

If you have a Juniper Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.

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