Dome Closure GJS-D010

1. Scope of Application

This Installation Manual applies to the Fiber Optic Splice Closure (hereafter abbreviated as FOSC), serving as a guide for proper installation.

Application Scenarios:

Aerial

Underground

Pipeline

Hand-holes

Operating Temperature: -40°C to +65°C

2. Basic Structure and Configuration

2.1 Dimension and Capacity

2.2 Main Components

2.3 Main Accessories and Special Tools

3. Installation Flow Chart

4. Installation Procedure

4.1 Step One – Open the Closure

Clean the installation area and prepare cables.

Check that all components and accessories are complete.

Remove the hoop fixing bolt and the hoop locking system to release the hoop.

Lift the FOSC cover to begin installation (see Drawing 1).

Important: If weather conditions are poor, pitch a tent for waterproofing and dustproofing.

4.2 Step Two – Determine Fiber Cable Lengths

Refer to Drawing 2(A) if all fibers are for branch splicing.

Refer to Drawing 2(B) if some fibers are for straight-through splicing.

Important: Reserve enough fiber length for splicing.
(Stripping length can also be adjusted by customers as required)

4.3 Step Three – Strip Cable and Fiber

Use the cutter and stripper to remove the protective coating from the cable (see Drawing 3).

Important: If the protective coat is hard to remove at once, strip it in sections to avoid fiber damage.

4.4 Step Four – Separate Fiber Cores

Wind two layers of insulating tape on the protective coat for protection.

Clean the separated fiber cores and form a ring (approx. 100 mm diameter) secured with tape.

Inlet/outlet tube configuration:

6 single tubes (max. cable diameter Φ21 mm each)

1 mass tube (max. Φ36 mm for single cable, Φ32 mm for two cables, or smaller multi-cables)

Reserve a 70 mm reinforced core length, trimming any excess.
(See Drawings 4 and 5).

Important: Select tubes carefully for easier splicing and sealing.

4.5 Step Five – Fix and Seal Fiber Cables

Insert cables into heat-shrinkable fixing sleeves, then into the selected inlet/outlet tubes.

Loosen and retighten the reinforced core fixing nut with the plastic and metal wrenches.

Slide the heat-shrinkable fixing sleeve to the cable root.

Install the branching clip as needed (see Drawing 5).

Heat the sleeve with a fire sprayer for a complete seal.
Important:

Tighten the reinforced core nut securely.

Heat evenly to avoid bubbles and defects.

4.6 Step Six – Splice Fibers

Use the fusion splicing machine as per its manual.
Important: Prevent fiber twisting and bending.

4.7 Step Seven – Install Protective Sleeves and House Fibers

After splicing, house the first fiber ring on the farthest side of the FOST.

Wind the remaining fiber ring (≥ 80 mm diameter) and place it in the FOST with protective sleeves (see Drawing 6).

Important: Avoid twisting or excessive bending.

4.8 Step Eight – Comprehensive Check

Ensure:

Nylon ties secure fibers at the FOST entry.

Grommets are pressed correctly.

Straight-through fibers and reserved fibers are well housed.

Internal fasteners and nuts are properly tightened.

Seal fitting is neat and complete.

Heat-shrinkable sleeves are fully sealed (see Drawing 7).

Important: Resolve any issues immediately.

4.9 Step Nine – Assemble and Fix FOSC

Place the FOSC cover on the base.

Install the plastic hoop securely.

(The rest of the section can continue as needed…)

5. In Conclusion

Fiber Dome Enclosures provide exceptional protection and organization of fiber optic splices in harsh environments, thanks to their robust dome-shaped design that ensures excellent mechanical strength against impacts or external stressors. Furthermore, their vertical dome configuration enables flexible cable routing as well as easier maintenance compared to flat closures - an attractive feature ideal for high-density networks that occupy limited spaces.

High-quality Fiber Dome Enclosures are constructed from industrial-grade plastic or composite materials designed for outdoor, underground, and pipeline use that are UV and corrosion-resistant, maintaining their mechanical properties over a wide temperature range, ensuring long-term reliability in outdoor, underground, or pipeline environments. Their lightweight yet sturdy nature also simplifies installation and transportation costs, cutting labor time in half while decreasing deployment costs overall.

Fiber Dome Enclosures are manufactured and tested to comply with rigorous industry standards such as IEC 61300 and GR-326-CORE that address mechanical, environmental, and sealing performance. Adherence to these standards ensures they can withstand temperature variations, moisture ingress, and mechanical stress, while IP68 protection provides complete dustproofness as well as continuous submersion in water for added peace of mind.

These dome enclosures can support diverse network applications, from FTTH (Fiber to the Home), FTTA (Fiber to the Antenna), backbone networks, and data centers to supporting multiple fiber types and splicing configurations seamlessly integrated with different network architectures. Their modular design also supports bunchy fiber types like ribbon as well as bunchy or ribbon bundles splice configurations seamlessly, enabling seamless integration into different network architectures, allowing easy expansion or upgrade opportunities on growing broadband networks - an investment worth making.

Fiber Dome Enclosures offer excellent installation flexibility and futureproofing features, with multiple inlet/outlet ports to facilitate cable management of different sizes and types. Their versatile design accommodates various installation scenarios--whether aerial, underground, or within manholes--providing adaptability in various environments. In combination with their high capacity (up to hundreds of fibers), these future-proof devices make an excellent solution to meet growing network demands.

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