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Replacing a T4000 Lower Front Fan Tray

 

The lower front fan tray is located below the front air filter. Each front fan tray weighs about 20.4 lb (9.3 kg). The fan trays are hot-insertable and hot-removable. The upper and lower fan trays are interchangeable with each other.

Note

Ensure that at any given time only one front fan tray is replaced. Do NOT replace both the front lower and upper fans simultaneously.

  1. Removing the T4000 Lower Front Fan Tray

  2. Installing the T4000 Lower Front Fan Tray

Removing the T4000 Lower Front Fan Tray

  1. Attach an electrostatic discharge (ESD) grounding strap to your wrist, and connect the strap to one of the ESD points on the chassis.
  2. Unwrap any PIC cables from the spools on the front cable management system and remove the cables from the tray. Arrange the cables so that they do not block the front cable management system and tray, and secure them with temporary fasteners so that they are not supporting their own weight as they hang from the connector.Caution

    Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.

  3. Simultaneously pull the two releases on the front cable management system. Lift it up and outward to lock it in place to access the lower fan tray.
  4. Rearrange the PIC cables in the front cable management system. For more information about proper cable arrangement, see Maintaining T4000 PICs.
  5. Loosen the captive screws on the corners of the fan tray faceplate.
  6. Grasp the handles, and pull the fan tray halfway out of the chassis.Warning

    To avoid injury, keep tools and your fingers away from the fans as you slide the fan tray out of the chassis. The fans might still be spinning.

  7. When the fans stop spinning, place one hand under the fan tray to support it, and pull the fan tray completely out of the chassis.
Figure 1: Removing the T4000 Lower Front Fan Tray
Removing the T4000 Lower Front Fan Tray

See also

Installing the T4000 Lower Front Fan Tray

To install a lower front fan tray:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Grasp the fan tray by its handles, and insert it straight into the chassis.
  3. Tighten the captive screws on each side of the fan tray faceplate to secure it in the chassis.
  4. Unlock the front cable management system and lower it to the fully lowered position.
  5. Rearrange the PIC cables in the front cable management system. For more information about proper cable arrangement, see Maintaining T4000 PICs.
Figure 2: Installing the T4000 Lower Front Fan Tray
Installing the T4000 Lower Front Fan Tray

See also