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Maintain the QFX5130 Cooling System

The fan modules in a QFX5130 switch are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace one of them without powering off the switch or disrupting the switching function.

CAUTION:

To ensure proper airflow, keep a failed fan module in place until you have a replacement fan module at hand. Do not run the device with an open fan tray slot for an extended amount of time.

Remove a Fan Module from QFX5130 Switches

Before you remove a fan module from a QFX5130 switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see https://www.juniper.net/documentation/us/en/hardware/juniper-safety-guide/index.html).

Ensure that you have the following parts and tools available to remove a fan module from a QFX5130 switch:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  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.
  3. Loosen the locking screw (3 or 4 turns) by using a Phillips number 2 screwdriver.
  4. Grasp the handle on the fan module and squeeze the outside of the handle to release the module. Figure 1shows how to remove a fan module from a QFX5130-32CD/QFX5130E-32CD switch. Figure 2 shows how to remove a fan module from a QFX5130-48C switch.
    Figure 1: Remove a Fan Module from a QFX5130-32CD/QFX5130E-32CD SwitchAirflow modules labeled AIR IN and AIR OUT with green arrows show removal direction. Inset shows a tool unlocking a mechanism.
    Figure 2: Remove a Fan Module from a QFX5130-48C/QFX5130-48CM Switch
    Rear panel illustration showing cooling fans and cable management. Arrows highlight fan removal and cable securing steps. AIR OUT label indicates airflow direction.
    Warning:

    To avoid injury, do not touch the fan with your hands or any tools as you slide the fan module out of the chassis—the fan might still be running.

    Note:

    The fan modules on the QFX5130 are hot-swappable and hot-removable field-replaceable units (FRUs). During replacement of a fan module while the switch is online, you must replace one fan module at a time. This should be done within 240 seconds, after which the switch shuts down.

  5. Pull firmly to slide the fan module halfway out of the chassis.
  6. When the fan stops spinning, use your other hand to support the fan and slide the fan module completely out of the chassis.
  7. Place the fan module in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
Note:

When a fan module is removed, the CLI message Fan/Blower is Absent is logged in the system log, and the system raises a minor alarm.

Install a Fan Module in QFX5130 Switches

Before you install a fan module in a QFX5130 switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

The fan modules in a QFX5130 switch are hot-removable and hot-insertable field-replaceable units (FRUs); you can remove and replace them without powering off the switch or disrupting the switch functions.

CAUTION:

To ensure proper airflow, keep a failed fan module in place until you have a replacement fan module at hand. Do not run the device with an open fan tray slot for an extended amount of time.

Note:

The fan module provides FRU-to-port or port-to-FRU airflow depending on the switch product variant you purchase.

To install a fan module in a QFX5130-32CD/QFX5130E-32CD (see Figure 3.):

  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 the connectors as you remove the fan module from its bag.
  3. Align the fan module with the open slot on the management panel of the chassis and slide it in until it is fully seated. Figure 3 shows how to install a fan module in a QFX5130-32CD switch. Figure 4 shows how to install a fan module in a QFX5130-48C switch.
    Figure 3: Install a Fan Module in a QFX5130-32CD/QFX5130E-32CD SwitchTechnical illustration of a filter or module installation showing airflow direction with labeled AIR IN and AIR OUT sections and tool interaction close-up.
    Figure 4: Install a Fan Module in a QFX5130-48C/QFX5130-48CM SwitchInstructional diagram for fan module installation in a server; shows airflow direction, screwdriver use, and mounting system.
    CAUTION:

    Damage can occur if you attempt to install a fan module into a chassis with a different airflow direction. Compare the switch product variant with the airflow marking on the handle to ensure that you are installing a fan module with the same airflow direction as the chassis. The fan modules are designed so that they can only be inserted into the QFX5130-32CD /QFX5130E-32CD/QFX5130-48C/QFX5130-48CM product variant that supports the same airflow type. SeeQFX5130 Power System for more information.

  4. Use a Phillips screwdriver, number 2 to tighten the locking screw.

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