Juniper Networks M160 manual Installing the Front Impeller Assembly

M160 Internet Router Hardware Guide

3.Attach the craft interface to the front of the impeller assembly, making sure that the hooks on the back of the craft interface clip securely into the windows on the front of the impeller assembly (see Figure 73).

4.Align the holes in the three semicircular metal tabs on the back of the craft interface with the corresponding holes in the top of the impeller assembly.

5.Insert the screws you saved when removing the craft interface into the three holes and tighten using a Phillips screwdriver (see Figure 72).

Installing the Front Impeller Assembly

To install the front impeller assembly, follow this procedure (see Figure 74):

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

2.Grasp the sides of the impeller assembly and align the rear of the assembly with the guides inside the chassis.

3.Slide the impeller assembly all the way into the chassis.

4.Using a Phillips screwdriver, tighten the captive screw at each corner of the craft interface.

Figure 74: Installing the Front Impeller Assembly

Captive screw

1216

Replacing the Rear Lower Impeller Assembly

The rear lower impeller assembly is located at the lower left of the rear of the chassis, above the left power supply, as shown in Figure 2. It weighs about 4 lb (1.8 kg).

154 Replacing Cooling System Components