Reinstalling the Front Fan Trays

The three front fan trays install in a column at the front left of the chassis, as shown in Figure 1. To reinstall the fan trays, follow this procedure (see Figure 38):

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.

Repeat the procedure to reinstall the other two front fan trays.

Figure 38: Reinstalling a Front Fan Tray