Fiber Dome Enclosure

Please pay special attention to the notes listed, especially when the operator seal the cable ports, as seal performance of the closure might be affected if operation is not appropriate.

Product Details



1. Please read this instruction manual carefully before installation.\

2. Please pay special attention to the notes listed, especially when the operator seal the cable ports, as seal performance of the closure might be affected if operation is not appropriate.

1. General Introduction

This section contains the following contents

Brief introduction

Product theory chart

Products pictures

Main components

1.1 Brief introduction

GPJ09L5-BJS3 type of Fiber Optic Splice Closure (FOSC) is a member of dome series. The function of the product is in the optical transmission link, to provide various types of fiber optic cable through, branching, and related connecting protection, IP safety rate is IP68. It can be installed 1x2: 32 PLC splitter or 2x2: 16 PLC splitter. This model has four small round ports and one large round port. The sealing component is made from vulcanized rubber. The sealing method adopts screw pressure. This model is suitable for different methods of branch connection, including branching of uncut cables. It could be used for aerial, pole-mounting, wall-mounting and underground application. This model is excellent in sealing performance, easy for installation, wide application and is prior choice of fiber connection equipment.

1.2 Product theory chart


Internal theory chart of Outdoor optical splitter modules

1.3 Product pictures


1. Cover; 2. Fiber splice tray; 3. Base; 4. Sealing ring; 5. Plastic hoop; 6. Earthling device

1.4 Main components








1 pc

Integrated protection of closure


Fiber splice tray


Fix the fiber, protect heat shrink tube, storage fiber and splitter


PLC splitter(2:32 in max)

2:32(1 pc)

2:16(2 pc)

Light splitting

Optional part


SC adapter

36 pcs


Optional part


SC-1.5m pigtail

32 pcs

Fusion with inlet cable

Optional part



1 set

Fix the internal and external structure


Plastic hoop

1 set

Fix the base and cover


Sealing ring

1 set

Big sealing part for sealing cover and base, different small sealing parts for fiber sealing


Plastic plug

4 pcs

For non cable entry sealing



1 set

Gas-filled test air pressure and the sealing performance

Optional part


Earthling device

1 set

Leading the internal mental components to grounding

Optional part


When customers choose to install splitter by themselves, please refer to the below contents to configure the pigtail length of splitter input port and output port.


Pigtail length of splitting output port (+2 cm)

Pigtail length of splitting output port (+2 cm)





135 cm

85 cm

90 cm

95 cm

100 cm

The installation arrangement of pigtail for splitter input port

and output port.

2. Installation Instructions

This section contains the following contents


Installation flow

Laying installation of closure

2.1 Preparation

2.1.1 Please check the type and accessories of optic fiber closure and fiber cable.

2.1.2 Keep dry and clean of all accessories.

2.1.3 Keep work environment clean (dry and non dust) for easy installation.

2.1.4 Use the specified and standard instrument during the peeling and installation.

2.1.5 No over bend fiber cable while coiling.

2.1.6 Application tool. Accessories tools (self supply)




Mark and temp fixation




Purity Application tools (self supply)



Optical cable radial wire stripper

Ring peeling cable skin

Optical cable portrait wire stripper

Straight portrait peeling cable skin

Beam wire stripper

Peeling beam wire skin

Bare wire stripper

Peeling cable coating


Measure length

Tube cutting knife

Beam wire peeling



Cut metal core

Cross screw driver

Screw down belts


Splice operations

Place products or tools Connection and test instrument (self-supply)



Heat sealing machine

Fiber connection

Optical time domain reflect meter(OTDR)

Test for connection result

2.2 Installation flow

2.2.1 Installation flow chart


2.2.2 Cable installation

2.2.1 Mark the cutting point on the cable, the length of stripping being about 180cm or as

per the requirement.


Uncut cable (Straight cable)

Cable (tube) cutterCable sheath cutterSteel core cut clamp Using optical fiber cable stripper peel the layer of cable without useful from marker.

image024 Introduce cable(2 fibers) and other branch fiber cables, peel the top 120 cm coat, maintain the integrity of the internal soft cable.

Note: ① To ensure not to damage the optical fiber

② Do not use a damaged optical fiber cable Cut off the redundant steel core from 3-4 cm of stripped point. Size as follows: The first point needs reserve 3.5 cm, the second point needs reserve 4.5 cm, the third point needs reserve 3.5 cm, the forth point needs reserve 4.5 cm, the fifth point needs reserve 3.5 cm, the sixth point needs reserve 4.5 cm. (The forth and fifth points are used for uncut cable)



2.2.3 Cable into closure

2..2.3.1 Open the closure

Unlade the locked device on the plastic hoop, open the plastic hoop to separate the cover and base.


① Pull the holder up ② Put the buckle to the screw lock block ③ Open hoop

Note: For the good sealing performance of the box, please be care when separate the box Lead cable of large port into closure. Make the striped cable through components in order and then enter into closure according to following pictures. The pictures of components used for large cable port

image032 Components list used for large cable port








1 set


Fixing internal and external structure


52 washer

2 pcs

Stainless steel

Used for sealing uncut cable (diameter of cable>10)


Connective blocker

2 pcs

Stainless steel


52 seal gasket

1 pc

Silica gel


M55 compressed bolt

1 pc

MPP Large cable port installation procedure (①-⑥)

① Screw down the plastic bolt of the big port, thread the stripped cables through the M55 hexangular compressed bolt (plastic),∮52 washer, connective blocker, ∮52 rubber seal gasket, connective blocker, ∮52 washer.


② Make cable thread large cable entrance in base

③ Loosen the button on the top of steel core fixed pole and thread the steel core into the retained hole of the steel core fixed pole; and then tighten the bolts, fix the cable to bracket with press button;

Note: When the diameter of cable is more than 14mm, take down liner of cable pressed button.

④ Lead the fiber which need optical spilt to splicing tray with splitter(The end try), like the pictures


⑤ Cable sealing

Connect two metal blocks and two 52 washers (thread the two holes on the connective blocker through two protruded poles on the ∮52 washers) and subsequently press ∮52 washers and ∮52 rubber seal ring into the big round cable inlet, then tighten the M55 hexangular pressed bolts using a screwdriver.

Note: Due to the limitation of space, make sure to tighten the hexangular bolts subsequently according to numbers in the following picture.

image037 Lead small inlet cable(branch cable) into closure

There are 4 small ports for cut cable. Components list for small cable port(branch cable)








1 set


Fix the in and outside part


09L4 sealing ring

4 pcs

Silica gel

For the sealing of closure


09L4 sealing ring inside lining(∮8-12mm)

4 pcs

Silica gel

Dia of Cable<∮12


Plastic gasket-Ⅰ

4 pcs



Plastic gasket-Ⅱ

4 pcs


Dia of Cable<∮10


M31 nut

4 pcs

MPP The Small Port components(Branch cable port)

image039 The setup steps for small port(branch cable) (①-⑧)


① Screw out the nut, take the seal parts, and screw down the press

button with tool

② Through the stripped cable into M31 Nut(plastic), plastic washer

and seal gasket.

Note: When diameter of cable <∮10, please use seal gasket Ⅱand seal liner for guarantee the sealing performance.

③ Through the cable into small port to closure;

④ Loose the steel core fixing pole, through the steel core to hole of pole, and screw down the bolt.

⑤ Fix the cable to bracket with press button.

⑥ Installation at the same time if grounding.

⑦ The seal for cable.

Press the seal gasket(liner only for necessary) and plastic washer to small port. Screw the M31 nut with spanner tightly for perfect seal.

⑧ Conduct the branch cable to tray

Measure the distance from cable fixing place to second or third tray port,

strip the fiber tube, fix them to inlet of tray with nylon ties.

Note: ① If no cable in inlet, please put the plastic plug to inlet, crow down the M31 nut, all will be perfect seal.

② If grounding, we will connect the steel core fixing device first before leaving factory.

Sealing of the cable entry ports


1. Take care while sealing the cable entry ports

2. Please note the direction of the liners when plugged into the cable port.


Cable diameter: ∮12-17.5


Cable diameter: ∮10-12


Cable diameter: ∮8-10


Use plugs to seal if without installation of cable

2.2.4 Fiber splicing, coiling and mark Fiber splicing and mark Remove the layer of the splicing fiber using the bare stripper, make it clean with gauze and alcohol. Then cut the fiber by cutter(Length according to the coiling). Devices in pictures are showed just as examples.

Tube StripperNaked Fiber StripperFiber Cutter Making the regular fiber splicing, record the parameter and mark the cable for the maintenance later. Devices in pictures are showed just as examples.


Fiber Splicer                                  OTDR Fusion sequence Please agglutinate the splitter in the tray After coiling the splitter pigtail, please insert the adaptor into the port of tray fixing plate. Please refer as the picture. Please lead the pigtail of splitter input port into the tray(Splitter installation place) and make splicing with cable needed optical split Please lead the pigtail of splitter output port into other trays and make splicing with output cable. Please make coiling of the rest fiber after splicing, then cover the tray

Note: Mark must be clear for the convenience maintenance later Coling

While coiling, please refer to following pictures. Please open the tray as following pictures.


Note: ① In coiling, the bend radius> 30mm. If radius too small, it will affect that fiber, even fiber break. With the long time, it may appear the broken fiber.

③ When coiling, watch out the distortion direction, usually it is “8” type, and twist out any fiber. Put out any fiber. Put the all fiber to under baffle to avoid damage fiber. Close all tray, and fix all with tape.

2.2.5 Assembling Put the seal tape and desiccant into body, install the cover of body, and fasten the cover and base with clamp.


Local construction(It depend on the user). The external ground wire must be safe. Then monitor the internal optical fibers, to be sure whether the optical fiber is damaged.


2.3 Laying installation of closure

Closure can be laid as follows


Pole mounted                           Air mounted                   Manhole and handhold mounted

3 Reopening and maintenance

This section contains the following connects


Maintenance and expansion


3.1 Reopening

Open body as

Note: If there is protective air or other air in body, please release the air by valve firstly.

3.2 Maintenance and expansion

3.2.1 Choose the fiber need maintenance, open the tray as, find the splicing fiber in the cable needed maintenance to maintain them.

3.2.2 While expanding, choose the inlet no any cable, loose the nut with spanner, take out the plug and other seal components. If the plug is too tight, use the screw driver to take out seal parts.

3.2.3 Introduce that cable need expanding, handle them as second section.

3.2.4 If need distribute optic cable in expanding, confirm the type and diameter of cable. Our regular small port can meet the cable of 8-∮17.5mm, if introduce other type cables, please contact us to enclose some relative seal parts before expanding. Please refer to following sealing elements for small ports.

Optional cable sealing elements


3.3 Reassembling

Check all parts, if ok, please assemble as 2.2.5

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