CommScope FOSC450-B6 Fiber Optic Splice Closure Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the CommScope FOSC450-B6 Fiber Optic Splice Closure. This closure is designed to protect fiber optic splices and cables in various outdoor and indoor environments. It features gel cable sealing and a pre-installed 12-splice tray, accommodating up to 6 cable attachments.

2. Safety Information

Observe the following safety precautions during installation and operation:

• Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when handling fiber optic cables and tools.
• Avoid direct eye exposure to laser light from fiber optic cables, as it can cause permanent eye damage.
• Handle fiber optic cables with care to prevent damage, which can lead to signal loss or breakage.
• Ensure all tools are clean and in good working condition before use.
• Follow all local safety regulations and guidelines for working with electrical and communication infrastructure.

3. Package Contents

Verify that all components are present before beginning installation:

• FOSC450-B6 Base
• Dome
• Gel Sealing Block with Compression Trigger
• One (1) Pre-installed 12-Splice Tray
• O-Ring
• Cable Retention Clamps
• Cable Retention Hardware
• Plugs for Unused Cable Ports
• Strength Member Retainers
• Fiber Routing Tubing
• Tray Tower to Hold Hinging FOSC Splice Trays
• Miscellaneous Hardware
• Installation Instructions (this document)

4. Setup and Installation

This section outlines the general steps for setting up and installing the FOSC450-B6 splice closure. Refer to the detailed diagrams for specific component placement.

4.1 Preparing the Closure

1. Unpack all components and verify against the package contents list.
2. Inspect the base, dome, and gel sealing block for any damage.
3. Ensure the O-ring is clean and properly seated in the base groove.

4.2 Cable Preparation and Entry

1. Select the appropriate cable entry ports for your application. The closure supports up to 6 cable attachments.
2. Prepare the fiber optic cables according to industry standards, stripping outer jackets and cleaning fibers.
3. Insert the prepared cables through the designated ports in the base.
4. Secure the cables using the provided cable retention clamps and hardware. Ensure proper strain relief for all incoming cables.
5. For unused cable ports, insert the provided plugs to maintain the environmental seal.

4.3 Fiber Splicing and Management

1. Route the fibers into the pre-installed 12-splice tray using the fiber routing tubing.
2. Perform fiber splicing according to your specific requirements (fusion or mechanical splicing).
3. Secure the spliced fibers and splice protectors within the splice tray. Ensure proper bend radius is maintained for all fibers.
4. Organize excess fiber length within the tray, utilizing the tray tower for hinging multiple splice trays if additional trays are added (this model includes one 12-splice tray).

4.4 Sealing the Closure

1. Once all splicing and fiber management are complete, ensure the gel sealing block is correctly positioned over the cable entry points.
2. Place the dome onto the base, aligning it properly.
3. Engage the compression trigger or locking mechanism to securely seal the dome to the base, activating the gel sealing. This creates an environmental seal.
4. Verify the seal integrity. The closure includes a test valve for pressure testing if required.

Figure 1: CommScope FOSC450-B6 Fiber Optic Splice Closure. This image displays the CommScope FOSC450-B6 Fiber Optic Splice Closure. On the left, the closure is open, revealing the internal structure with multiple splice trays designed to organize and protect fiber optic splices. A red strap secures the trays. On the right, the closure is shown assembled and sealed, presenting its robust, cylindrical black dome with ribbed texture, indicating its protective and weather-resistant design. A yellow warning symbol is visible near the base of the sealed unit.

5. Operating Instructions

The FOSC450-B6 is a passive component designed to protect fiber optic splices. Once installed and sealed, it requires minimal operational interaction.

• Monitoring: Periodically inspect the external integrity of the closure for any signs of physical damage or environmental stress.
• Re-entry: If re-entry is required for maintenance or expansion, carefully follow the reverse steps of the sealing process. Ensure the gel sealing block and O-ring are clean and undamaged before re-sealing. Replace components if necessary to maintain the environmental seal.

6. Maintenance

Regular maintenance ensures the longevity and performance of the splice closure.

• Cleaning: Keep the exterior of the closure clean from dirt, dust, and debris. Use a soft, damp cloth for cleaning.
• Seal Inspection: Annually inspect the O-ring and gel sealing block for signs of degradation, cracks, or loss of elasticity. Replace these components if their integrity is compromised.
• Cable Integrity: Check the cables entering and exiting the closure for any signs of damage, excessive bending, or strain.
• Hardware Check: Periodically verify that all clamps and retention hardware are securely fastened.

7. Troubleshooting

This section addresses common issues that may arise during or after installation.

• Issue: Loss of signal after closure installation.
  • Solution: Re-check all splices within the tray. Ensure fibers are not pinched or excessively bent. Verify proper connection at termination points outside the closure.
• Issue: Water ingress into the closure.
  • Solution: Re-open the closure and inspect the O-ring and gel sealing block for proper seating and damage. Ensure all unused cable ports are properly plugged. Re-seal the closure carefully. Consider pressure testing if a test valve is available.
• Issue: Cables slipping or lacking strain relief.
  • Solution: Ensure cable retention clamps and hardware are tightened correctly. Verify that the cable preparation (jacket stripping) was done to allow proper clamping.

8. Specifications

9. Warranty and Support

For specific warranty information and technical support, please refer to the official CommScope website or contact their customer service directly. Keep your purchase receipt for warranty claims.

CommScope Official Website: www.commscope.com