Installing The Front Impeller Assembly; Replacing The Rear Lower Impeller Assembly; Figure 74: Installing The Front Impeller Assembly - Juniper Internet Router M160 Hardware Manual

M160 Internet Router Hardware Guide
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Installing the Front Impeller Assembly

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

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).
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Replacing Cooling System Components
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).
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.
Insert the screws you saved when removing the craft interface into the three
holes and tighten using a Phillips screwdriver (see Figure 72).
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.
Grasp the sides of the impeller assembly and align the rear of the assembly
with the guides inside the chassis.
Slide the impeller assembly all the way into the chassis.
Using a Phillips screwdriver, tighten the captive screw at each corner of the
craft interface.
Captive screw