Replacing the Fan Tray on an M40e Router

Removing the Fan Tray on an M40e Router

The fan tray is located behind the cable management system on the front of the chassis, as shown in M40e Chassis Description. It weighs approximately 13 lb (5.9 kg).

To remove the fan tray (see Figure 1):

1. Unwrap any PIC cables from the spools on the cable management system and remove the cables from the tray. Arrange the cables so that they do not block the front of the 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.

2. Attach an electrostatic discharge (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 an M Series, MX Series, or T Series Router.
3. Loosen the thumbscrew at each end of the fan tray, using a Phillips screwdriver if necessary.
4. Grasp the sides of the fan tray and pull firmly to slide it 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.

5. Place one hand under the fan tray to support it and slide the tray completely out of the chassis after the fans stop spinning.

Figure 1: Removing the Fan Tray

Installing the M40e Fan Tray

To install the fan tray (see Figure 2):

Caution: When sliding the fan tray into the chassis, take care not to catch and pinch any dangling PIC cables with the edges of the tray. Also make sure your fingers are not near the fans, which start spinning as soon as the fan tray contacts the midplane.

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. For more information about ESD, see Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series Router.
2. Grasp the sides of the fan tray and align the rear of the tray with the guides inside the chassis.
3. Slide the fan tray all the way into the chassis.
4. Tighten the thumbscrew at each end of the cable management system.
5. Rearrange the PIC cables in the cable management system. For more information about proper cable arrangement, see Maintaining M40e PICs and PIC Cables.

Figure 2: Installing the Fan Tray