Installing a Front Fan Tray

To install a front fan tray, follow this procedure (see Figure 54):

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. Verify that the router is attached to a proper earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
2. Grasp the handle on the faceplate of the fan tray with one hand and place the other hand under the unit to support it. Orient the tray so that the fans are on the left side.
3. Slide the tray into the slot.
4. Tighten the thumbscrew to seat the fan tray firmly in the chassis.
5. If you removed any PIC cables from slots in the cable management system while removing the fan tray, replace them. (To make it easier to see the fan trays, Figure 54 does not depict the cable management system on the left side of the router.)

   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.

   Figure 54: Installing a Front Fan Tray