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Replacing the Fan Tray on the SRX1400 Services Gateway

 

The SRX1400 Services Gateway has one fan tray located in the side of the chassis and can be plugged in from the rear of the chassis. The fan tray contains two fans. The fan tray supports hot-swappable functionality. It weighs about 4.2 lb (1.9 kg).

Note

To prevent overheating, install the replacement fan tray immediately after removing the existing fan tray. We recommend that you reinstall the fan tray within 3 minutes; otherwise, the services gateway temperature exceeds the maximum recommended room temperature, and the device shuts down automatically in 4 minutes.

You can also use the fan tray LED to detect the condition when the fan speed has reduced to a safer value, so that the fan tray can be removed from the device safely.

Table 1 provides the LED indications of the fan tray LED.

Table 1: Fan Tray LED

Color

LED Status

Indicated Condition

Amber

Off

Fans are running and fan tray is functioning normally. Do not remove the fan tray in this condition.

On Steadily

Fans are not running, and fan tray can be removed safely.

Note: This fan tray LED lights only when fans are shut down manually using the CLI command request chassis fan-tray offline.

The fan tray LED does not indicate a fan failure. The FAN LED on the System I/O Card (SYSIOC) indicates the fan failure status.

Note

The fan tray LED provides additional safety measures. Even though you can remove the fan tray while the fans are still running, we strongly recommend that you wait until the fan tray LED lights steadily amber (indicating that the fans are not running) before you remove the fan tray..

To replace the fan tray:

  1. Use the request chassis fan-tray offline command to shut down the fans. Wait until the system displays Fan Take Offline Successful message and the fan tray LED lights amber (indicating that the fans are not running).
  2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to the SRX1400 Services Gateway.
  3. Turn the screw to the left on the fan tray door as shown in Figure 1. Open the fan tray door to the right and remove the fan tray door.
    Figure 1: Replacing the Fan Tray—Opening the Fan Tray Door
    Replacing the Fan
Tray—Opening the Fan Tray Door
  4. Wait for the fans to stop spinning completely.Warning

    To avoid injury, do not proceed until the fans have stopped spinning.

    Warning

    The fan tray LED provides additional safety measures. Even though you can remove the fan tray while fans are still running, we that you wait until the fan tray LED lights steadily amber (indicating that the fans are not running) before you remove the fan tray.

  5. After the fans have stopped spinning and the fan tray LED lights steadily, lift upward on the latch at the bottom of the fan tray to release it as shown in Figure 2.
    Figure 2: Removing the Fan Tray from the SRX1400 Services Gateway
    Removing the Fan Tray from
the SRX1400 Services Gateway
  6. Grasp the fan tray and pull it out approximately 6 in. (15 cm).
  7. Place one hand under the fan tray to support it and pull the fan tray completely out of the chassis. Set it aside.
  8. Grasp the replacement fan tray and insert it straight into the chassis until you hear a click, indicating the latch has closed. See Figure 3.
    Figure 3: Installing the Fan Tray into the SRX1400 Services Gateway
    Installing the Fan Tray
into the SRX1400 Services Gateway
    Note

    Be sure the fan tray is correctly oriented in the slot, with the latch on the bottom of the vertically aligned fan tray.

  9. Press the fan tray into the chassis about 1 in. (2.5  cm) beyond where the latch closes to engage the power connection.
  10. Reinsert the fan tray door, and close and tighten the captive screw to secure it in the chassis.Note

    The FAN LED on the System I/O card lights steadily green, indicating that cooling system is operating normally.