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Maintaining QFX10002 Cooling System Components

 

Use the following procedures to replace a fan module in a QFX10002:

Removing a Fan Module from a QFX10002

The fan modules in QFX10002 models are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions.

Caution

Replace a failed fan module with a new fan module within one minute of removal to prevent chassis overheating. Before removing the fan module, ensure you have a replacement fan module at hand.

Before you remove a fan module from a QFX10002, 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 fan module from a QFX10002:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

To remove a fan module from a QFX10002 switch (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.
  3. Using a Phillips screwdriver, loosen the locking screw (3 or 4 turns).
  4. Grasp the handle on the fan module and squeeze the outside of the handle to release the module.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.

  5. Pull firmly to slide the fan module halfway out of the chassis.
  6. When the fan stops spinning, 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.
Figure 1: Removing a Fan Module from QFX10002 Models
Removing a Fan
Module from QFX10002 Models
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.

Installing a Fan Module in a QFX10002

The fan modules in QFX10002 are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions.

Caution

Replace a failed fan module with a new fan module within 1 minute of removal to prevent chassis overheating. Before removing the fan module, ensure you have a replacement fan module at hand.

Note

The fan module provides airflow out, which is also known as port-to-FRU airflow . In legacy switches, or switches with an LCD, this airflow is called front-to-back airflow.

Before you install a fan module in a QFX10002 device, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

To install a fan module in QFX10002 models :

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. Taking care not to touch the connectors, remove the fan module from its bag.
  3. Align the module with the open slot with the label right-side up to ensure the correct orientation. See Figure 2 and Figure 3.Note

    The QFX10002-60C uses a different fan module that has a different orientation than the QFX10002-72Q and QFX10002-36Q.

  4. Slide the module into the bay until it is fully seated.
  5. Using a Phillips screwdriver, turn the locking screw until it is tight.
Figure 2: Installing a Fan Module in a QFX10002-36Q or QFX10002-72Q
Installing
a Fan Module in a QFX10002-36Q or QFX10002-72Q
Figure 3: Installing a Fan Module in a QFX10002-60C
Installing a Fan Module
in a QFX10002-60C