Juniper Networks M160 manual Installing the Fan Tray, Removing the Fan Tray

Replacing Hardware Components

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. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226.

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.

CAUTION: 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 69: Removing the Fan Tray

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Installing the Fan Tray

To install the fan tray, follow this procedure (see Figure 70):

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.

Replacing Cooling System Components 149