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 Avici Support Services immediately.
The Stackable Switch Router (SSR) Breaker Interface Panel (BIP) contains two individual breaker modules. Breaker modules are accessible from the top-front of the system for removal and replacement.
For quick and easy reference, this Field Replacement Procedure (FRP) is organized as follows:
Support Service
To obtain information on customer service and training, there are three ways to contact Avici Customer Service:
- United States Support: 877-292-8424 (TSR-BY-AVICI)
International Support: 01-978-964-2350
- E-mail: support@avici.com
World Wide Web: http://www.avici.com
Tools Needed
- #1 Phillips screwdriver
- Voltage meter
Removing the Breaker Module
The breaker modules are accessible from the top-front of the system for removal and replacement. Each breaker module contains two breakers and supports one half shelf of the SSR chassis (refer to Figure 1). Breaker modules pull out of the chassis from the BIP to allow disconnection of the cable connections.
WARNING (1) Follow all safety precautions and ensure power feeds have been disconnected at the power distribution center or DC power plant. Failure to do so may result in personal injury.
Turn off the power feeds from the customer's power distribution center to the breaker module being replaced. Ensure that breaker switches are in the off position for the breaker module being replaced (refer to Figure 1). Verify with the voltage meter that all power feeds are off.
WARNING (2) Turn off the power feeds at the DC power plant, or at the power distribution center, depending on which is used at the site. Verify power is off with voltage meter. Failure to do so may result in personal injury.
Figure 1. Breaker Module - Side A and Side B
This procedure outlines the steps to remove Breaker Module, Side A. The steps to remove Breaker Module Side B are the same. The only difference between the breaker modules is that connections for the Side A module are named A and connections for the Side B module are named B (see Figure 2).
Figure 2. Breaker Module Connections
PROCEDURE: Use the following procedure to remove the breaker module:
Step 1 Turn the circuit breaker switches to the off position for the breaker being replaced (see Figure 3).
Figure 3. Breaker Module On/Off Switches
Step 2 If you are replacing breaker module A, turn off all power feeds from the customer's power distribution center supplying this module. If you are replacing breaker module B, turn off all power feeds from the customer's power distribution center supplying this module.
Step 3 Using a voltage meter, test that all power to the side where the circuit breaker is being replaced is off. Test the power, the terminal studs, and the returns for the side being replaced (see Figure 4).
NOTE Figure 4 highlights Side A of the SSR circuit breaker. If replacing the circuit breaker on Side B, repeat this procedure for Side B.
Figure 4. SSR Power Connections (Power and Return)
Step 4 Using a #1 Phillips screwdriver, loosen the four M3 screws on the front corners of the breaker module. Set the screws aside for re-installation (refer to Figure 5).
Figure 5. Breaker Module Removal - 1
Step 5 Carefully pull the breaker module forward through the BIP chassis, making sure that no metal parts of the breaker module are touching the chassis (see Figure 6).
Figure 6. Breaker Module Removal - 2
Step 6 Remove the four cables from the power in and power out Radsok connectors. These cables are marked as follows: Side A1, A2, A|1, and A|2 (refer to Figure 7).
Figure 7. Removal of Radsok Cables
Step 7 Unfasten the two power monitor connectors, 1A load and 2A load, from the circuit breaker (see Figure 8).
Figure 8. Disconnecting Power Monitors
Step 8 Remove the four lug connections, 1A NO, 1A COM, 2A NO, 2A COM, from the circuit breaker (see Figure 9).
Figure 9. Disconnecting Lug Connectors
Installing a 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 (refer to Figure 10).
WARNING (3) Turn off the power feeds at the DC power plant, or at the power distribution center, depending on which is used at the site. Failure to do so may result in personal injury.
Figure 10. Breaker Modules
This procedure outlines the steps to replace Breaker Module, Side A. The steps to replace Breaker Module Side B are the same. The only difference between the breaker modules is the naming conventions for the cables. Cables on Side A are "A" cables and cables on Side B module are "B" cables (see Figure 11).
WARNING (4) Follow all safety precautions and ensure power feeds have been disconnected at the power distribution center or DC power plant. Failure to do so may result in personal injury.
Figure 11. Breaker Module Connections
PROCEDURE: Use the following steps to install and connect the replacement breaker module:
Step 1 Turn the circuit breaker switches to the off position for the breaker being replaced (see Figure 12).
Figure 12. Breaker Module On/Off Switches
Step 2 If you are replacing breaker module A, turn off all power feeds from the customer's power distribution center supplying this module. If you are replacing breaker module B, turn off all power feeds from the customer's power distribution center supplying this module. (refer to Figure 13).
Step 3 Using a voltage meter, test that all power to the side where the circuit breaker is being replaced is off. Test the power, the terminal studs, and the returns for the side being replaced (see Figure 13).
NOTE Figure 13 highlights Side A of the SSR circuit breaker. If replacing the circuit breaker on Side B, repeat this procedure for Side B.
Figure 13. SSR Power Connections (Power and Return)
Step 4 Attach the four lug connections, 1A NO, 1A COM, 2A NO, 2A COM, from the circuit breaker (see Figure 14).
Figure 14. Attaching Lug Connectors
Step 5 Attach the two power monitor connectors, 1A load and 2A load, from the circuit breaker (see Figure 15).
Figure 15. Attaching Power Monitor Connectors
Step 6 Attach the four cables from the power in and power out Radsok connectors. These cables are marked as follows: A1, A2, A|1, and A|2 (refer to Figure 16).
Figure 16. Attaching Radsok Cables
Step 7 Slowly push the breaker module and attached cables back into the chassis, being careful not to kink or damage the cables.
Step 8 Using a #1 Phillips screwdriver, tighten the four M37 screws on the front corners of the breaker module.
Step 9 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 10 If breaker module A was replaced, turn on the two power feeds supplying this module. If breaker module B was replaced, turn on the two power feeds supplying this module.
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Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are
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Last Updated: 07/02/03 at 10:21:17