Avici Systems Inc.

Field Replacement Upgrade Procedures

TSR Breaker Module

02137-01 Rev. AB

Before beginning this procedure, carefully inspect the package to ensure no damage occurred during shipping or delivery. If you suspect any possible damage to any field replacement unit, contact Avci Customer Service immediately.

The Terabit Switch Router (TSR®) Breaker Interface Panel (BIP) contains two individual breaker modules. Each breaker module contains five breakers, one for each of four (4) bay shelves and one for the bay controller module. The breaker modules are accessible from the top-front of the system for removal and replacement

WARNING Follow safety precautions and ensure power feeds have been disconnected at the power distribution center or DC power plant.

Tools Needed

You will need a 1/4-in. flat-bladed screwdriver.

Support Services

To obtain information on customer service and training, there are three ways to contact Avici Customer Service:

Removing the Breaker Module

Ensure that the power feeding the breaker module being replaced has been turned off at the customer's power distribution center. Ensure that breaker switches are in the off position for the breaker module being replaced. It is necessary to pull out and disengage the breaker module from the BIP to allow disconnection of the cable connections.

WARNING Turn off the four power feeds at the DC power plant, or at the power distribution center, depending on which is used at the site.

PROCEDURE: Use the following procedure to remove the breaker module:

Step 1 If you are replacing breaker module A, turn off all four power feeds from the customer's power distribution center supplying this module. If you are replacing breaker module B, turn off all four power feeds from the customer's power distribution center supplying this module.

Step 2 Grasp the BIP cover plate at the top and side of the plate, then gently pull the cover toward the front of the bay to release the ball studs from the receptacles on the top and bottom of the BIP holding it in place.Refer to Figure 1.

Figure 1. Breaker Interface Panel and Switches

Step 3 Using a 1/4-in. flat-blade screwdriver, loosen the four M4 captive panel screws on the front corners of the breaker module and pull it forward through the BIP chassis. Refer to Figure 2.

Figure 2. Breaker Module Removal

Step 4 Remove the power in cables from the top four power in connector pins. Refer to Figure 3.

Step 5 Remove the two small spade lug receptacle connectors from each of the five breaker auxiliary switches. Refer to Figure 3.

Step 6 Remove the five shelf power cables from the bottom five shelf connector pins. Refer to Figure 3.

Figure 3. Removal of Cables and Spade Lug Connectors

Installing a Breaker Module

PROCEDURE: Use the following steps to install and connect the replacement breaker module:

Step 1 Push the shelf power cables firmly onto the bottom five shelf connector pins. Verify that each cable is connected to the correct breaker: 1, 2, 3, 4, and the bay controller. Refer to Figure 4.

Step 2 Reattach the two small spade lug receptacle connectors to each of the five breaker auxiliary switches, verifying that the labels on each connector are attached to the correct breaker: 1C, 1NC, 2C, 2NC, etc. Refer to Figure 4. and Figure 5.

Figure 4. Reattaching Cables and Spade Lug Connectors

Step 3 Push the power-in cables onto the top four power-in connector pins. Verify that each cable is connected to the correct breaker input: 1, 2, 3, or 4. Refer to Figure 4 and Figure 5.

Step 4 Slowly push the breaker module and attached cables back into the BIP chassis being careful not to kink or damage the cables. Using the flat-blade screwdriver, tighten the four M4 captive panel screws on the front corners of the breaker module.

Step 5 Replace the BIP cover plate by lining up all four receptacles with their respective ball studs on the top and bottom front of the BIP. Gently press on the cover plate until it snaps into place. Refer to Figure 6.

Figure 5. Lug Receptacle Connections

Step 6 Turn on the four power feeds at the DC power plant, or the power distribution center, depending on which is used at this site.

Step 7 If breaker module A was replaced, turn on the bay controller switch and the four power feeds supplying this module. If breaker module B was replaced, turn on the bay controller switch and the four power feeds supplying this module.Refer to Figure 6.

Figure 6. Replacing the Breaker Interface Panel

Copyright © 2001 Avici Systems Inc.
Avici® and TSR® are registered trademarks of Avici Systems Inc.
IPriori™ is a trademark of Avici Systems Inc.

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    Last Updated: 04/04/01 at 12:22:44

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