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Maintaining the ACX6160 Power Supplies

Removing a Power Supply from the ACX6160

Before you remove a power supply from an ACX6160, 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:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • Phillips (+) screwdriver, number 2 (for a DC power supply)

The power supplies in an ACX6160 are hot-removable and hot-insertable field-replaceable units (FRUs) when the second power supply is installed and running. You can install replacement power supplies in the two slots next to the fan modules without powering off the device or disrupting the routing functions.

CAUTION:

Replace the power supply with a new power supply within 1 minute of removal to prevent chassis overheating.

To remove a power supply from an ACX6160 (see Figure 1):

  1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
    Note:

    If you need to remove all the power supplies installed in your ACX6160, you must power off the ACX6160 before removing the power supplies. See Powering Off the ACX6160 .

  3. Disconnect the power supplied to the ACX6160. 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:
    • Using the screwdriver, remove the screws securing the ring lugs attached to the power source cables to the power supply. Then 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.
    Figure 1: Removing a Power Supply in an ACX6160Removing a Power Supply in an ACX6160
  8. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.

Installing a Power Supply in an ACX6160

Before you install a power supply in an ACX6160, 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:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • Phillips (+) screwdriver, number 2 (To attach the power cable to the DC power supply, we need the screwdriver).

The power supplies in an ACX6160 are hot-removable and hot-insertable FRUs when the second power supply is installed and running. You can install replacement power supplies in the two power-suppy slots next to the fan modules without powering off the device or disrupting the routing functions.

To install a power supply in an ACX6160 (see Figure 2):

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of 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.
  3. Using both hands, place the power-supply in the power supply slot on the FRU panel of the ACX6160 and slide it in until it is fully seated and the locking lever slides into place.
Figure 2: Installing a Power Supply in an ACX6160Installing a Power Supply in an ACX6160
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.