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Removing a Power Supply from a QFX3600 or QFX3600-I Device

 

The power supplies in QFX3600 and QFX3600-I devices are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the device or disrupting device functions.

Before you remove a power supply from a QFX3600 or QFX3600-I device, 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 QFX3600 or QFX3600-I device:

  • ESD grounding strap

  • An antistatic bag or an antistatic mat

Caution

Replace a failed power supply with a blank panel or new power supply within 1 minute of removal to prevent chassis overheating.

To remove a power supply from a QFX3600 or QFX3600-I device (see Figure 1):

  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 QFX3600 or QFX3600-I device, you need to power off the switch before removing the power supply. See Powering Off a QFX3600 Device.

  3. Disconnect power to the power supply:

    • 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.

  4. Remove the power source cable from the power supply faceplate:

    • 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—Remove the screws securing the ring lugs attached to the power source cables to the power supply using the screwdriver, and remove the power source cables from the power supply. Replace the screws on the terminals and tighten them.

  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.
  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.
Figure 1: Removing a Power Supply from a QFX3600 or QFX3600-I Device
Removing
a Power Supply from a QFX3600 or QFX3600-I Device
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.