CommScope FOSC-350C Manuale utente

Gel-sealed In-line Fiber Optic Closure

Contents 1 General

1.1 Installation instruction description

1.2 Product description

2 Sizing and product kit

Information

2.1 Dimensions

2.2 Kit content

2.3 Additional tray kit

3 Installation conditions

precautions

4 Cable installations

(Floating cable bracket)

1 General

1.1 Installation Instruction description

The installation instruction describes the necessary steps to installthe FOSC-350C.

The installation instruction illustrates the use on loose tube cables. If other cable types (slotted

core or central core) are used, supplementary installation steps have to be made. Contact the

local agent to get the relevant accessories and instructions.

1.2 Product description

The FOSC-350C in-line closure is a gel-sealed fiberoptic splice closuredesigned for cable joint

applicationsin the telecom outsideplant network. The closure has maximum splicing capacity of

192 splices and is suitable for deployment in aerial, underground or direct buried environments.

Sealingis achieved via built-in gel technology, resultingin extremely convenient re-entry and re-

sealing.The closure has four cable ports, two on both sides.

2 Sizing and product kit information

2.1 Dimensions

Cable diameter range in port 8 - 20 mm (8 – 17 mm if using 4x48 tray)

Outer closure dimension 367 x 182 x 106 mm

FOSC-350C

INST A L L A TION INSTRUCTION

TC-2039-IP

Rev A, Apr 2018

www.commscope.com

CY6998-000

Rev. D

5 Cable installation (Fixed cable bracket)

6 Fiber preparation

6.1 When using Tray 24

6.2 When using Tray 48

6.3 When usingTray 12(Thin Tray)

7 Splicing and fiberstorage

8 Closing of the closure

9 Field mounting of the closure

10 Re-opening

2.2 Kit content

*Standard kit is listed below, alternative kits and accessories are available.

1. Body and cover

2. Splicing tray with splice holder

3. Cable attachment bracket

4. Strength member lug

5. Transportation tubes

6. Set of sealing blocking rings

7. Gel strip

8. Cable plug

9. Cleaning tissue

10. Installation instruction

11. Fusion splice protectors

12. Tie wraps

2.3 Additional tray kit

2.3.1 Tray kit – Tray 24

1. Splicing tray with splice holder (Using Tray 24)

2. Fusion splice protectors

3. Transportation tubes

4. Tie wraps

2.3.2 Tray kit –Tray 48

1. Splicing tray (Using Tray 48)

2. Fusion splice protectors

3. Transportation tube

4. Tie Wraps

3 Installation conditions precautions

3.1 The closures can be installed at temperature between

-5°C and 45°C.

3.2 Follow the installation instruction steps to ensure the

performance of the closure.

3.3 It is necessary to take precautions and keep the

working space clean to protect the closure sealing materials and

splices.

4 Cable Installation (Floating cable bracket)

4.1 Looped Cable

4.1.1 Make a window cut of 2600mm

4.1.2 Cut the loose tube of the to be spliced fibers in the

middle (1300mm) and continue the installation on 4.3

4.2 Drop cables

4.2.1 Remove the cable sheath over 1300 mm.

4.3 Cut the strength member on both jacket ends at a

distance of 45 mm from the cable jacket.

4.5 Install the strength member and the aramid yarn (if

present) into the holding lug and secure the lug to the cable

attachment bracket with the bolt. Assure that the lug lip, the

securing bolt and the hose clamp head are positioned

downwards to the bottom of the closure.

4.6 Terminate and secure the cable attachment bracket to

the cable sheath with the cable hose clamp.

4.7 Protect the cable hose clamp and the termination

with some layers of PVC tape.

4.8 Clean the cable sheath with the cleaning tissue

4.9 Select the appropriate blocking rings according to the

cable outer diameter. It is preferred that the blocking ring is

slightly larger than the cable diameter.

4.10 Cut the selected rings on the mark.

4.11 Insert the cable attachment bracket into the bracket

holding slot as shown.

Note: If a dual strength member is present, cut one of the strength members flush

with the jacket end. Install the remaining strength member into the holding lug. Verify

the proper orientation of the cable: strength member towards the attachment bracket.

4.4

If aramid yarn is present, cut the aramid yarn to a

length of 100 mm. Cut away a part of the aramid yarn and make

a braid with the remaining aramid yarn. Paste a piece of PVC

tape at the end of the braid.

4.12 Mark the cable where the blocking rings will be

installed as shown. Install the rings over the cable with

the slit positioned under the cable.

4.13 Wrap gel strip around cable between the two blocking

rings. Press first part of the strip onto the cable to ensure the

strip sticks to the cable firmly. Make sure the strip is wrapped

smoothly without twisting between layers.

4.14 Continue wrapping the strip smoothly until

the area between the two blocking rings is completely filled

with gel and add 1 extra turn of gel. In this case, the

gel will exceed the diameter of the blocking rings.

4.15 At the cable port where the cable will be installed, install

two black tie wraps.

4.16 Position the cable with the pre-installed

cable sealing block into the cable port and insert the cable

attachment bracket into the holding slot as shown.

4.17 Secure the cable with the two black tie wraps.

4.18 In unused ports, a cable plug must be installed.

Wrap the gel strip smoothly between in the two blocking rings

of the cable plug. Wrap the gel until it is flush with the blocking

rings. In this case, the gel may not exceed the height of the

blocking rings.

4.19 Install a cable plug (hole towards outside) in all unused

closure cable ports.

5.1

5.2

Cable Installation (Fixed Cable Bracket)

Repeat the step 4.1 – 4.2

Cut the strength member on both sides at a distance

of 30 mm from the cable window cut.

5.3 Mark at 55mm and 90mm from the cable jacket end.

5.4 Repeat installation step 4.9-4.10.Install 2pc ring trees

over the cable.

30mm

5.5 Wrap the cable with gel strip. Continue wrapping the

strip smoothly until the area between the two blocking rings is

completely filled with gel and add 1 extra turn of gel. In this case,

the gel will exceed the diameter of the blocking rings.

5.6 Remove the block when cable OD>16mm.

5.7 Tighten the screw to secure the strength member.

5.8 Make sure the ring tree in the slot and secure the

cable.

5.9 Secure the cable with UV-resistant tie wrap

5.9.2 Install a cable plug (hole towards outside) in all unused

closure cable ports.

6.1

6.1.1

Fiber preparation

When using Tray 24

In case of a looped cable, coil the loops and store

them in the space in front of the tower of the closure (loops can

be stored around the tower as well).

6.1.2 Remove the loose tubes of the to be spliced fiber

bundles up to 150 mm from the cable jacket (see drawing 6.1.4).

6.1.3 Degrease the fiber bundle. Slide the transportation

tubes over the fibers up to 50 mm from the cable jacket end (see

drawing 6.1.4).

6.1.4 Sketch for tube installation.

5.9.1 In unused ports, a cable plug must be installed. Wrap

the gel strip smoothly between in the two blocking rings of the

cable plug. Wrap the gel until it is flush with the blocking rings. In

this case, the gel may not exceed the height of the blocking rings.

6.1.5 Route the transportation tubes to the tray entrance.

Always route the tubes around the tray tower before entering the

tray.

6.1.6 Secure the transportation tube at the splice tray

entrance with two tie-wraps.

6.2

6.2.1

When using Tray 48

In case of a looped cable, coil the loops and store

them under the tray, and use tie wraps to tie up the bundle.

6.2.2 Remove the loose tubes up to 100mm from the cable

jacket end.

6.2.3 Degrease the fiber bundle and slide the

transportation tube (length of +/- 230mm) over the fibers until

the transportation tube has an overlap with the tube of 50mm.

6.2.4 Route the transportation tubes to the tray entrance as

shown.

100 mm

50 mm

6.2.5 Secure the transportation tube at the tray entrance

with two tie wraps. For the first tube, use the slots positioned

towards the outside. The end of the tube should be positioned on

the rib indicated with an arrow.

6.2.6 A second tube can be routed in the same groove, use

the remaining slots to secure the tube with 2 tie wraps. The

present tie wraps don't need to be removed.

6.2.7 Store fibers on the tray properly.

6.2.8 Remove/Install tray 48 as following shows

6.3

6.3.1

6.3.2

When using Tray 12 (Thin tray)

Same as 6.1.1

Same as 6.1.2

6.3.3 Degrease the fiber bundle. Slide the thicker

transportation tubes over the fibers up to 50 mm from the cable

jacket end and then insert the thinner transportation tube into the

thicker one with overlap 30mm (see drawing 6.3.4).

6.3.4 Sketch for tube installation.

6.3.5 Same as 6.1.5

6.3.6 Insert the thinner transportation tube to the splice tray

entrance directly.

30mm Thinner tube

7.1

Splicing and fiber storage

Position the FOSC-350C close to the splicing machine

in a convenient location and secure the closure.

7.2 Slide the heat-shrinkable splice protection over one

fiber and fuse fibers according to local recommendations and

procedures. After the fusion splice is made, install the heat-

shrinkable splice protection (e.g. SMOUV) with an appropriate

heating source. Allow the splice protection to cool down to

ambient temperature.

7.3 After each splice is made, the splice should be stored

in the splice holder in the appropriate position. Do not deform the

splice protector during insertion.

7.4 Incoming fibers should be routed first behind the splice

holder before the over-length is coiled into the tray. Route the

fibers through the cross of the tray as shown.

7.5 In case of two or more trays, use tray wedge to keep

the upper trays in upward position during installation on lower

tray.

7.6 After use, the tray wedge can be stored on the tower

underneath the installed trays.

7.7 Put on butterfly tabs and tray lid to secure the fiber if

using 48 trays

7.8 Secure the trays by the Velcro.

8Closing of the closure

8.1 Close the cover by closing the latches in the proper

sequence shown in 8.2.

8.2

9.1

Field mounting of the closure

Termination on aerial cables. Use the special designed

bracket to secure the closure onto the supporting wire of the

aerial cable. Install the two pieces bracket facing with bowing

outwards to interlock the aerial cable.

9.2 Termination in manholes. Secure the closure to the

manhole frames with bolts in the provided positions on the

bottom part of the closure.

10.1

Re-opening

Remove the latches in the reversed order as

described in 8.2.

Indice

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