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1 Introduction

2 General

 

2.1 Kit content

 

2.2 Tools

 

2.3 Accessories

 

2.4 Port capacity

3  Closure preparation

4  Cable installation

 

4.1 Looped cable preparation

 

4.2 Drop cable preparation

 

4.3 Cable + strength member termination

 

4.4 Tube routing

5  Installation of the gel block

6  Fiber routing on the trays

7  Shield continuity

8  Capacity of baskets

9  Closing the closure

10 Important steps

Content

1   Introduction

The FOSC-450 is an environmentally sealed enclosure for the fiber management system that provides the function 
of splicing in the external network.
The closure is a single ended design made of a thermoplastic material. The base and dome are sealed with a 
clamp and pre installed O-ring system. For cable sealing, a wrap-around block with 4 ports is used that contains 
a pre-installed gel profile. It can be opened and closed repeatedly without the need to replace the gel.
The maximum single fiber splice capacity of the FOSC 450 A closure is 96 stored on four trays (24 splices per 
tray). 

FOSC-450A

I N S T A L L A T I O N   I N S T R U C T I O N 

Fiber optic splice closure

TC-772-IP
Rev A, Mar 2017
www.commscope.com

Summary of Contents for FOSC-450A

Page 1: ...re for the fiber management system that provides the function of splicing in the external network The closure is a single ended design made of a thermoplastic material The base and dome are sealed with a clamp and pre installed O ring system For cable sealing a wrap around block with 4 ports is used that contains a pre installed gel profile It can be opened and closed repeatedly without the need t...

Page 2: ... maximum cable diameter 28 mm the maximum cable diameter in the lower small ports becomes 20 mm 2 2 Tools FACC TUBE STRIPPER 02 to strip loose tube 1 4 Nut driver 10 mm Nut driver 3 1 Remove the dome to base clamp Remove the dome and O ring 1 2 3 2 3 Accessories FOSC A Trays FOSC A Shield Con Kit Shield continuity wire FOSC 450A MULTI 4 7 FOSC 450A 3 DROP KIT 2 General 2 1 Kit content 2 4 Port cap...

Page 3: ...40 mm from the jacket 4 Cable installation 4 1 Looped cable preparation Loose buffer tube cable Central core cable 4 2 1 Remove the jacket over a length of 1 2 m cut the strength member at a distance of 40 mm from the jacket 4 2 2 Remove the jacket over a length of 1 5 m cut the strength members at a distance of 40 mm from the jacket Remove the central tube at 25 mm from the jacket Central core ca...

Page 4: ...insertion 4 2 7 Bundle the cables with vinyl tape on both sides of the port splitter Note in case of central core uni tube cable remove the core at 150 mm leaving from the jacket 4 3 1 Secure the strength member into the strength member attachment 4 3 Cable and strength member termination Loose tube and central core 4 3 3 Insert strength member bracket into the slot in the frame Top picture shows ...

Page 5: ...to the grommet 4 3 8 Install the hose clamp around the cable retention brackets Note the head of the hose clamp has to be positioned on top of the cable retention bracket Otherwise it might interfere with the base when assembled Modular cable multi out Multi out with the 4 7 kit Multi out with the port splitter kit 4 3 9 Attach the strength member bracket to the cables Wrap two complete layers of ...

Page 6: ...rays can be removed until needed Loose Buffer Tube loop or single drop 4 4 2 Slide the appropriate transportation tube over the loose tube and route to the tray Mark at 15 mm from the tray edge Remove the tube excess from the mark and secure to the tray with tie wraps 4 4 1 In case of a loop select the appropriate loose tube and cut in the middle Strip the loose tube at 40 mm from the jacket 4 4 3...

Page 7: ...al tube underneath the tiwraps and secure to the basket 4 4 8 Store the uncut bare fibers into the basket and keep in place with tie wraps Note do not tighten the tie wraps onto the fibers 4 4 6 Cut the appropriate fibers and route them through a transportation tube to the tray 4 4 7 Secure the transportation tube to the tray with tie wraps Note if necessary mark and remove the tube excess The tub...

Page 8: ...o the basket with tie wraps Note when spiral is used put some foam on the spiral underneath the tie wraps 4 4 11 Route the fibers to the appropriate trays through transportation tubes 4 4 12 Secure the transportation tubes to the tray with tie wraps Note if necessary mark and remove the tube excess The tube is 15 mm onto the tray and has to make a smooth bend around the tray tower ...

Page 9: ...nto the tray following the above shown path Wrap tape around the tube s before securing to the tray 4 4 15 Secure one end of the tube to the tray and route the transportation tube to the basket Note make sure the tube makes a smooth bend around the tray tower 4 4 13 Strip the loose tube at 450 mm from the jacket 4 4 14 Select the appropriate size of transportation tube and cut to 300 mm long Modul...

Page 10: ... gel block 5 1 Make sure the gel seal is not already compressed Turn the tail of the gel seal counter clockwise to ensure that the seal is in the un compressed position Squeeze the gel seal to unlatch and open each half one at a time Modular cable multi out Central core tube 4 4 18 Secure the central core 150 mm long to the basket with tie wraps Note if present remove the looped fibers out of the ...

Page 11: ...on The fiber slack should be coiled into the tray Follow the routing as shown 6 3 If a tray for up to 16 heat shrinkable fusion splice protectors is used the tray organizer has 6 locations to store splice protectors Each location can hold maximum 4 fusion splice protectors of type smouv 1120 02 length 45 mm installed outer diameter is 2 4 mm or equivalent After each splice is made the splice shoul...

Page 12: ...plice protectors Each location can hold maximum 4 fusion splice protectors of type ANT After each splice is made the splice should be stored in the splice holder If splice protectors are positioned on the side with the 4 locations the fibers from the locations on the outside are first routed through the passage between the locations and then coiled into the tray 6 4 If a tray for up to 24 heat shr...

Page 13: ... the picture 7 2 Protect with tape 7 Shield continuity 6 7 Routing in the FOSC ACC A TRAY Feeder 7 12 Feeder 1 6 Distribution 7 12 Distribution 1 6 Feeder and Distribution shown together WRONG Both of these patterns could cause signal attenuation ...

Page 14: ...e all unused cable termination hardware in the bag and store in closure for future cable terminations 10 Important steps Slide the base over the cables Avoid crossing of fibers and loose tubes Multi out is always through the basket Replace the silicagel after each re entry 9 1 Install the hook and loop fastener and O ring Place the silicagel bag remove the packaging Note make sure sealing areas ar...

Page 15: ...15 ...

Page 16: ...t any specifications or warranties relating to CommScope products or services This product is covered by one ore more U S patents or their foreign equivalents For patents see www commscope com ProductPatent ProductPatent aspx To find out more about CommScope products visit us on the web at www commscope com For technical assistance customer service or to report any missing damaged parts visit us a...

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