C H A P T E R 3 - Mounting the Chassis in a Rack

C H A P T E R 3

Mounting the Chassis in a Rack

This chapter provides instructions for mounting the chassis in a rack. This chapter contains the following topics:

Attaching the Mounting Bracket Adapters to the Chassis

Mounting the Chassis in a Rack

Attaching the Mounting Bracket Adapters to the Chassis

The Netra CT chassis fits into a standard 19-inch width rack. Note that you can move the standard mounting brackets up to six inches (152.4 mm) backward on the Netra CT chassis to center-mount the chassis (FIGURE 3-1).

FIGURE 3-1 Center- Mounting the Chassis

Determine the appropriate action:

If you have a 19-inch width rack, you do not have to install any additional mounting bracket adapters. Go to Mounting the Chassis in a Rack.

If you have a 23-inch or 600-mm width rack, you must install the mounting bracket adapters.

To Attach the Mounting Bracket Adapters

1. Obtain the mounting bracket adapters from the shipping kit.

2. Place one of the mounting bracket adapters behind the right chassis mounting bracket, and align the holes in the adapter with the mounting bracket (FIGURE 3-2).

FIGURE 3-2 Installing the Mounting Bracket Adapters

3. Secure the mounting bracket adapter to the mounting bracket using four screws from the shipping kit.

4. Repeat Step 2 and Step 3 to secure the left mounting bracket adapter to the chassis.

Mounting the Chassis in a Rack

The Netra CT chassis is shipped with one to four Netra CT servers installed inside. A fully loaded Netra CT chassis, including the rackmounting brackets, weighs 150 pounds (68 kg). To mount a fully loaded chassis into a rack, you must use a lifting device, or two persons, to lift the chassis.

Alternatively, you can remove all the servers from the chassis to make the chassis lighter before you mount it in the rack. An empty chassis (with all servers removed) weighs 74 pounds (33.6 kg).

If you want to remove the servers from the chassis before you mount it in the rack, go to To Remove Servers From the Chassis.

If you want to mount the chassis in the rack without removing the servers, go to To Mount the Chassis in a Rack.

To Remove Servers From the Chassis

Note - Individual Netra CT servers do not make up an EMI enclosure unless they are installed in a Netra CT chassis. The chassis is not an EMI enclosure unless it is full of Netra CT servers and/or blanking panels. If you remove a Netra CT server, you must install a blanking panel; if you don't, the unit will be in violation of 47CFR15.

Caution - Do notattempt to remove a server from the chassis without first performing the next step or you might damage major system components.

1. Unseat all the rear transition modules (RTMs) from the server that you are going to remove.

You do not have to completely remove the RTMs from the chassis; just pull them out an inch or two so that they are disengaged from the rear of the server.

2. Using a No. 2 Phillips screwdriver, loosen the black captive screws at the top of the server.

If you are removing a Netra CT 810 server, loosen the four black captives screws at the top of the server (FIGURE 3-3).

If you are removing a Netra CT 410 server, loosen the two black captive screws at the top of the server (FIGURE 3-4).

FIGURE 3-3 Loosening the Screws at the Top of a Netra CT 810 Server

FIGURE 3-4 Loosening the Screws at the Top of a Netra CT 410 Server

3. Using a No. 2 Phillips screwdriver, loosen the black captive screws at the bottom of the server.

If you are removing a Netra CT 810 server, loosen the three black captive screws at the bottom of the server (FIGURE 3-5).

If you are removing a Netra CT 410 server, loosen the two black captive screws at the bottom of the server (FIGURE 3-6).

Caution - Do not loosen the silvercaptive screws at the base of the server; those screws hold the power supply unit in place.

FIGURE 3-5 Loosening the Screws at the Bottom of a Netra CT 810 Server

FIGURE 3-6 Loosening the Screws at the Bottom of a Netra CT 410 Server

4. Push the power supply unit locking mechanism up into the unlocked ()position.

FIGURE 3-5 shows the location of the two power supply unit locking mechanisms on the Netra CT 810 server, and FIGURE 3-6 shows the location of the single power supply unit locking mechanism on the Netra CT 410 server. Make sure you unlock both power supply units if you are replacing an Netra CT 810 server, or you will not be able to remove the server from the chassis.

5. With your left hand, grasp the bar in front and slowly pull the server out of the chassis until the purple handle at the top of the server is visible.

6. With your right hand, grasp the purple handle at the top of the server, and completely pull the server out of the chassis using both the bar in front and the handle at the top.

FIGURE 3-7 shows how to remove a Netra CT 810 server from the chassis, and FIGURE 3-8 shows how to remove a Netra CT 410 server from the chassis.

FIGURE 3-7 Removing a Netra CT 810 Server From the Chassis

FIGURE 3-8 Removing a Netra CT 410 Server From the Chassis

7. Place the server on a flat level surface, taking care not to damage the metal lip that extends from the bottom of the server.

To Mount the Chassis in a Rack

Caution - Ensure that the rack is bolted to the floor before you install the chassis in the rack.

1. Raise the Netra CT chassis to the appropriate height in the rack, then align the mounting holes on the sides of the chassis with the mounting holes in the rack rails (FIGURE 3-9).

FIGURE 3-9 Mounting the Netra CT Chassis in a Rack

2. Secure the chassis to the rack using eight screws (four on each side).

To Connect the Grounding Cable

See Supply and Ground Conductor Requirements for the site requirements.

1. Get a DC grounding cable and two M5 nuts with lock washers.

2. Go to the rear of the chassis and locate the two DC grounding studs.

FIGURE 3-10 DC Grounding Studs

3. Remove the plastic shielding from the DC grounding studs.

4. Position and align the DC grounding cable against the two DC grounding studs at the rear of the chassis.

5. Place the star washers between the DC grounding cable and the two nuts that you use to secure one end of the grounding cable to the two studs.

6. Tighten the two nuts to secure the grounding cable to the two studs.

7. Secure the other end of the grounding cable to the earth ground in the building.

You can secure the grounding cable to a proper grounding point on the rack, as long as the rack is properly grounded to the earth ground in the building.

Caution - If energized units are not properly grounded, an energy hazard is present.

8. Install the servers in the Netra CT chassis, if necessary.

If you removed servers before you installed the chassis in the rack, go to Chapter 4.

If you did not remove servers from the chassis before you installed the chassis in the rack, go to Chapter 5.