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Maintaining QFX10008 Cooling System

Both QFX10008 and QFX10016 switchess have two independent, field-replaceable fan trays, each with an associated fan tray controller.

Removing a QFX10008 Fan Tray

Before you remove a fan tray:

  • Ensure you understand how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage.

  • Ensure that you have the following parts and tools available to remove a fan tray from a QFX10008 chassis:

    • Electrostatic discharge (ESD) grounding strap

    • Replacement fan tray

    • A Phillips (+) screwdriver, number 1 or 2 (optional), for the captive screws

The QFX10008 chassis has two independent, field-replaceable fan trays. Each fan tray is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace the fan tray while the switch is running without turning off power to the switch or disrupting switching functions.

CAUTION:

Do not remove the fan tray unless you have a replacement fan tray available.

Each fan tray is installed vertically on the rear, or FRU-side, of the chassis.

CAUTION:

The fan tray can be removed and replaced while the switch is operating. However, the fan tray must be replaced within 3 minutes of removing the fan tray to prevent overheating of the chassis.

To remove a QFX10000 fan tray (see Figure 2 for the QFX10008 chassis:

  1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the rear left side of the chassis. See Figure 1.
    Figure 1: ESD Point on QFX10008 Chassis RearESD Point on QFX10008 Chassis Rear
      1
    ESD point
     
  2. Loosen the four captive screws either by unscrewing with your thumb and forefinger or with a Phillips screwdriver.
  3. Grasp the top and bottom handles and pull the fan tray out about 3 in. (7.6 cm). See Figure 2.
    Figure 2: Removing a Fan Tray from a QFX10008 ChassisRemoving a Fan Tray from a QFX10008 Chassis
  4. Tilt the top of the fan tray forward.
  5. Using both hands, lift the fan tray out of the slot and rest it on a flat surface with the handles to the side.
    CAUTION:

    Replace a fan tray within three minutes to avoid chassis overheating.

Installing a QFX10008 Fan Tray

Before you begin to install a fan tray:

Ensure that you have the following parts and tools available to install a fan tray in a QFX10008 chassis:

  • Electrostatic discharge (ESD) grounding strap

  • A Phillips (+) screwdriver, number 1 or 2 (optional), for the captive screws

  • A replacement fan tray

CAUTION:

The fan tray can be removed and replaced while the switch is operating. However, the fan tray must be replaced within three minutes of removing the fan tray to prevent the chassis from overheating.

The QFX10008 chassis has two independent, field-replaceable fan trays. Each fan tray is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace the fan tray while the switch is running without turning off power to the switch or disrupting switching functions.

To install a QFX10008 fan tray, see Figure 4:

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the rear left side of the chassis. See Figure 3.
    Figure 3: ESD Point for QFX10008 Chassis RearESD Point for QFX10008 Chassis Rear
      1
    ESD point
     
  2. Grasp the top and bottom fan tray handles and align the bottom of the fan tray with the bottom of the fan tray slot.
  3. Rest the bottom edge of the fan tray in the slot and slide the fan tray into place so it is fully seated.
  4. Tighten the captive screws until finger tight. See Figure 4.
Figure 4: Installing a JNP10008-FAN Fan Tray in a QFX10008 ChassisInstalling a JNP10008-FAN Fan Tray in a QFX10008 Chassis

Removing a QFX10008 Fan Tray Controller

For each of the two fan trays, there is a fan tray controller. Each controller is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace one fan tray controller while the switch is running without turning off power to the switch or disrupting switching functions. See Figure 5.

Figure 5: QFX10008 Fan Tray ControllerQFX10008 Fan Tray Controller
CAUTION:

Do not remove the fan tray controller unless you have a replacement controller available.

In order to access a fan tray controller, you must first remove the fan tray. With the fan tray removed, the fan tray controller is installed horizontally above the switch interface boards (SIBs) at the top of the chassis.

Before you remove a fan tray controller:

Ensure that you have the following parts and tools available to remove a fan tray controller from a QFX10008 chassis:

  • Electrostatic discharge (ESD) grounding strap

  • An electrostatic bag or an antistatic mat

  • Replacement fan tray controller

  • A Phillips (+) screwdriver, number 1, for the captive screws

To remove the fan tray controller:

  1. Remove the fan tray. See Removing a QFX10008 Fan Tray.
  2. Loosen the two captive screws on each side of the fan tray controller.
  3. Grasp the fan tray controller and pull it straight out of the slot. See Figure 6.
    Figure 6: Removing a QFX10008 Fan Tray ControllerRemoving a QFX10008 Fan Tray Controller
  4. Place the fan tray controller in an electrostatic bag or on an antistatic mat.

Installing a QFX10008 Fan Tray Controller

For each of the two fan trays, there is a fan tray controller. Each controller is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace one fan tray controller while the switch is running without turning off power to the switch or disrupting switching functions. See Figure 7.

Figure 7: Fan Tray ControllerFan Tray Controller
CAUTION:

Do not remove the fan tray controller unless you have a replacement controller available.

In order to access a fan tray controller, you must first remove the associated fan tray. With the fan tray removed, the fan tray controller is installed horizontally above the Switch Interface Boards (SIBs) at the top of the chassis.

Before you replace a fan tray controller:

Ensure that you have the following parts and tools available to install a fan tray controller into a QFX10008 chassis:

  • Electrostatic discharge (ESD) grounding strap

  • Replacement fan tray controller

  • A Phillips (+) screwdriver, number 1 for the captive screws

To install a fan tray controller:

  1. Remove the replacement fan tray controller from the electrostatic bag.
  2. Carefully slide the fan tray controller into the fan tray controller slot until it is flush with the mounting holes. See Figure 8.
    Figure 8: Replacing a QFX10008 Fan Tray ControllerReplacing a QFX10008 Fan Tray Controller
  3. Using a Phillips screwdriver, tighten the captive screws for the fan tray controller.
  4. Replace the fan tray. See Installing a QFX10008 Fan Tray.