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3M 2178-XSB Instructions Manual

2178-XLB\ 2178-XSB-FR\ 2181-XB-FR\ 2181-XB\ 2178-XLB-FR

Made by: 3M
Type: Instructions
Category: Network Hardware
Pages: 16
Size: 3.66 MB

 

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July 2010

78-8135-0094-5-K

3M

 Fiber Optic Splice Closure 

2178-XSB/XSB-FR & 2178-XLB/XLB-FR
3M

 Cable Addition Kit 

2181-XB/XB-FR

Instructions

3


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3

78-8135-0094-5-K

1.0 General

1.1

3M

FiberOpticSpliceClosure2178-XSB

The 3M

 Fiber Optic Splice Closure 2178-XSB has 

been developed to accommodate up to 48 single fusion 

splices, and 144 mass fusion splices.  The closure has 

two 1" ports and one 1.4" port in the center. 
The 2178-XSB splice closure can accommodate two 

3M

 Fiber Optic Splice Trays 2532. The 2532 splice 

tray can accommodate single fusion, single mechanical 

or 12-ribbon fiber.
1.2

3M

FiberOpticSpliceClosure2178-XLB

The 3M

 Fiber Optic Splice Closure 2178-XLB has 

been developed to accommodate up to 96 single fusion 

splices, and 288 mass fusion splices.  The closure has 

two 1" ports and one 1.4" port in the center. 
The 2178-XLB splice closure can accommodate four 

3M

 Fiber Optic Splice Trays 2532. The 2532 splice 

tray can accommodate single fusion, single mechanical 

or 12-ribbon fiber.

Length 

14.56" 

(370 mm)

Width 

10.10" 

(257 mm)

2178-XSB 

Height 

4.62" 

(117 mm)

2178-XLB 

Height 

5.75" 

(146 mm)

2181 

Adapter 

adds 

2.05" 

(52 mm)

2.0 KitContents

Visuallyinspectallcomponents.Ifanycomponentismissingorappearsdamaged,donotinstall.

Callcustomerserviceat1-800-426-8688forareplacementproduct.

2.1 

3M

 Fiber Optic Splice Closure 2178-XSB/XSB-FR Kit Contents

3M

 Multiport Grommet included 

in certain kits only.

C.

A.

M.

B.

K.

L.

G.

F.

E.

I.

N.

H.

J.

D.

A.  1 - 2178-XSB closure body with bolts

B.  2 - Sheath retention inserts

C.  1 - 3M

 Multiport Grommet (certain kits only)

D.  4 - 1" Washer trees

E.  1 - 1.4" Plug

F.   8 -  Cable ties (blue)

G.  8 -  Cable ties (green)

H.  2 - 3M

 Reclosable Dual Lock

 Fasteners 

I.   1 -  Roll Scotch

®

 Linerless Rubber Splicing 

Tape 130C

J.   1 - Packet of silicone lubricant

K.  2 - 1" Hose clamps

L.  1 - Sheath scuff

M. 1 - Tray support with strap

N.  1 - Tape collar gauge

O.  1 - Transition tube-tie-down. Bracket not shown.


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78-8135-0094-5-K

2.2 

3M

 Fiber Optic Splice Closure 2178-XLB/XLB-FR Kit Contents

A.

M.

B.

K.

L.

G.

F.

E.

I.

N.

H.

J.

D.

3M

 Multiport Grommet included 

in certain kits only.

C.

A.  1 - 2178-XLB closure body with bolts

B.  2 - Sheath retention inserts

C.  1 - 3M

 Multiport Grommet (certain kits only)

D.  4 - 1" Washer trees

E.  1 - 1.4" Plug

F.   8 -  Cable ties (blue)

G.  8 -  Cable ties (green)

H.  2 - 3M

 Reclosable Dual Lock

 Fasteners 

I.   1 -  Roll Scotch

®

 Linerless Rubber Splicing 

Tape 130C

J.   1 - Packet of silicone lubricant

K.  2 - 1" Hose clamps

L.  1 - Sheath scuff

M. 1 - Tray support with strap

N.  1 - Tape collar gauge

O.  1 - Transition tube-tie-down. Bracket not shown.

2.3 

3M

 Fiber Optic Splice Closure Adapter 2181-XB/XB-FR Kit Contents

3M

 Multiport Grommet included 

in certain kits only.

C.

A.

M.

M.

O.

B.

K.

L.

G.

F.

E.

I.

N.

H.

J.

D.

A.  1 - 2181-XB adapter with gasket

B.  3 - Sheath retention inserts

C.  1 - 3M

 Multiport Grommet (certain kits only)

D.  4 - 1" Washer trees

E.  1 - 1.4" Plug

F.   8 -  Cable ties (blue)

G.  8 -  Cable ties (green)

H.  2 - 1.4" Washer trees 

I.   1 - Roll Scotch

®

 Linerless Rubber Tape 130-C

J.   1 - Packet of silicone lubricant

K.  3 - 1" Hose clamps

L.  1 - Sheath scuff

M. 10 - Bolts

N.  1 - Tape collar gauge

O.  2 - 1" Plugs


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78-8135-0094-5-K

2.4 

Additional materials required: 

3M

 Fiber Optic Splice Tray 2532

 

To branch splice in the center port, order 3M

 1.4" Cable Branch Port Kit, part no. 80-6113-1460-2. 

For armored sheath cable, use 3M

 Scotchlok

 Shield Bond Connector 4460-D/FO.

Note: Closure can handle two trays.

3.0 CablePreparation

3.1 

Determine amount of cable needed for storage 

and splicing. The closure can store 8' (2.4 m) 

of buffer tube fiber.

3.2 

Remove sheath and clean fiber per company 

practice.

3.3 

Scuff 6" (150 mm) of cable sheath, starting at 

end of sheath.

Figure 1

 

3.4 

Secure the strength members.
3.4.1  If cable has central strength member, 

assemble strength member clamp 

onto strain relief bracket as shown 

in Figure 2. Mark and cut the central 

strength member at end of strength 

member clamp. 

Figure 2

 

3.4.2  If cable has dual strength members, 

assemble strength member clamp 

onto strain relief bracket as shown in 

Figure 3.

Figure 3

 


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3.4.3  If securing the strength members 

is not required, the front half of 

the sheath retention inserts can be 

removed as shown in Figure 4.

3.4.4  Slide central strength member under 

retention lug and tighten bolt to 40 

in-lbs ± 5 in-lbs (4.6 N•m ± 0.6 N•m). 

Figure 4

 

3.4.5  Cut a small length of the unused 

sheath scuff and place it grit side 

inward inside of the hose clamp.

Note:  The cut piece of sheath scuff should wrap at 

least halfway around the cable sheath, but not 

completely around the cable.

Place cable retention clamp and sheath 

scuff onto the cable so that hose 

clamp will be 1" (25 mm) from end of 

sheath.

3.4.6  Install hose clamp and tighten to 

40 in-lbs ± 5 in-lbs  

(4.6 N•m ± 0.6 N•m).

Figure 5

 

3.5 

For armored cables (Figure 6), use 3M

 

Scotchlok

 Shield Bond Connector 

4460-D/FO Kit.

Figure 6

 


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3.6 

Place retention clamp into place in the closure 

and mark location of gasket edges on cable. 

This will be the area of the tape collar.

3.7 

Determine the diameter of the scuffed area 

of the cable and choose two (2) appropriately 

sized washers for each cable. Washer inner 

diameters should be as close to the diameter of 

the cable as possible. 
3.7.1  If diameter of cable is close to either 

end of the marked washer diameter 

range, try both sizes and choose the 

snuggest fit available.

3.7.2  For example, if the cable diameter 

measures 1.12", try both the 1.0-1.1 

and 1.1-1.2 marked washers. Select 

the washer with the snuggest fit 

around the cable diameter, allowing 

the washer to close at the split.

Figure 7

 

3.8 

 Place washers onto cable on either side of the 

area marked for tape collar build up. Washers 

may be split if necessary to ease installation.

Figure 8

 

3.9 

Using the supplied Scotch

®

 Linerless Rubber 

Splicing Tape 130C, build up the collars to the 

appropriate diameter from approximately 1.5” 

(40 mm) from sheath opening.

Figure 9

 


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3.9.1  Collars should be built up to 1.45" 

diameter for large port and 1.05" 

diameter for the smaller port. Use the 

tape collar gauge provided in kit to 

measure for required diameter. 

1.05"

end

1.45"

end

Figure 10

 

3.10  Thinly coat all surfaces of cable ports and tape 

collar with silicone lubricant and insert into 

gasket at the proper port. Insert cable retention 

clamp into slot at same time and push down 

until cable is in proper alignment.

Note:  Ensure that washers are properly seated in the 

grooves of the case on either side of the gasket.

Note:  Carefully follow health and safety 

environmental instructions as given on Material 

Safety Data Sheet for the silicone lubricant.

Figure 11

 

3.11  Using two (2) black cable ties, retain cables in 

ports by placing ties both inside and outside 

the base. 

Note:  White cable ties are shown for clarity.

Figure 12

 


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78-8135-0094-5-K

3.12  For ribbon transition to tray applications, 

secure the transition tube to the bracket 

mounted in base.

Figure 13

 

3.13  When tray support and tray are in place, 

mount the other end of the transition tube to 

the tray.

Figure 14

 

4.0 DropCablePreparation

4.1 

Determine how many drop cables will be 

passing through the 3M

 Multiport Grommet. 

4.2 

Remove sheath on drops exposing buffer tubes 

to a length required per company practice.

4.3 

Insert drops into multiport grommet first and 

then insert blank plugs last.

Note:  A small amount of lubricant provided in kit may 

be placed on blank plugs and cable to allow 

for ease of installation into multiport grommet.

 

 An additional method to ease installation is to 

take sheath scuff supplied in closure kits, and 

slightly sand the leading edge of the drop cable 

and blank plugs.

Figure 15

 


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78-8135-0094-5-K

4.4 

Grease approximately 2" (50 mm) of cable drop 

jacket.

4.5 

Place a small amount of lubricant on the gasket 

inside diameter in the area where it seals with 

the 3M

 Multiport Grommet.

Note:  Carefully follow health and safety environmental 

instructions as given on Material Safety Data 

Sheet for the silicone lubricant.

Figure 16

 

4.6 

Insert drop 1"-2" (25 mm-50 mm) into 

multiport grommet and then pull back out.

4.7 

Insert drop the entire length of multiport 

grommet.

4.8 

Repeat steps 4.3-4.7 for the blank plugs as well.

Note:  Leave future ports orientated to top of closure 

for ease of future installations of drop.

5.0 3M

MultiportGrommet6-Port(1.4")Installation

5.1 

Break off the tab feature as shown on both cable 

strain relief brackets.

Figure 17

 

5.2 

Place cable strain relief brackets on either side 

of the grommet, with three drops on either side 

as shown. Insert cable strength members into 

small K-connectors.

Figure 18

 


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78-8135-0094-5-K

5.3 

Secure cable strain relief brackets and the 

strain relief bracket from the closure to the 

grommet with the hose clamp as shown. 

Tighten the hose clamp to 40 in.-lbs. ± 5 in.-lbs. 

(4.6 N•m ± 0.6 N•m). 

Note:  Ensure that extruded retention feature of strain 

relief has sufficient contact with surface of 

grommet.

Figure 19

 

5.4 

Tighten the six K-connector nuts to 

40 in.-lbs. ± 5 in.-lbs. (4.6 N•m ± 0.6 N•m) 

each. 

Figure 20

 

5.5 

Place cable strain relief and the 3M

 Multiport 

Grommet assembly into closure.

5.6 

Place cable ties around multiport grommet 

assembly inside and out as shown.

Note: White cable ties are shown for clarity.
5.7 

Follow closure instruction for all other 

preparation leading up to and including sealing 

closure.

3M

 Fiber Optic Splice Closure 2178 XSB

3M

 Fiber Optic Splice Closure 2178 XLB


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78-8135-0094-5-K

6.0 TrayInstallationandSplicing

6.1 

Once cables have been anchored, place tray 

support in position and tighten two (2) screws.

6.2 

Cut two 3M

 Reclosable Dual Lock

 

Fasteners in half. Remove liner from two 

pieces of fastener and place on tray support as 

shown. Mate second two pieces of fastener to 

the attached pieces. Remove liner from back 

of top pieces and attach first tray.

Figure 21

 

7.0 FiberManagementInsideTray

7.1 

Select appropriate splice holder based on type 

of splicing to be performed

7.2 

Remove adhesive backing and position splice 

holders on tray.

Note:  Positioning of splice holders should be such 

that a minimum of 1.5" (40 mm) bend radius is 

maintained for each fiber to be spliced.

Note:  In a dirty environment an alcohol wipe may be 

used to clean tray surface for better adhesion.

Note:  Carefully follow safety, health and environmental 

information given on product label or the 

Material Safety Data Sheet for the cleaner.

7.3 

Route buffer tube or ribbon to desired tray 

corner.  

Note:  Do not exceed minimum 1.5" (40 mm) bend 

radius during routing process.

7.4 

Secure loose buffer tube to tray using the 

supplied cable ties.  

Figure 22

 


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78-8135-0094-5-K

7.5 

Place ribbon fiber into 1"-1.5" (25 mm-40 mm) 

of ribbon retention grommet (cut segments 

as needed from supplied length) and secure 

assembly into tray using supplied cable ties. Be 

sure to use two cable ties per each buffer tube.

(A maximum of six ribbons can be loaded into 

each retention grommet segment.)  

Note:  Do NOT use pliers to tighten cable ties to tray.  

Cable ties should be hand tightened such that 

ribbon or buffer tube are immobilized.  Over 

tightening can cause damage to buffer tube or 

ribbon.

Figure 23

 

7.6 

Splice per company practice and place sleeves 

into splice holders.

8.0 SpliceClosureAssembly

8.1 

Thinly coat all gasket surfaces with a light 

application of silicone lubricant to aid in 

gasket sealing.

Note:  Carefully follow health and safety 

environmental instructions as given on Material 

Safety Data Sheet for the silicone lubricant.

8.2 

Place cover on base and hand start bolts 1, 

5, 7, and 3 in that order first. All others can 

be started in any order. Using tightening 

sequence, torque all bolts to 240 in-lbs. 

Torque-FRClosuresto50in-lbs.

TORQUING SEQUENCE

8.3 

Closure should be flash tested by pressurizing 

closure to a maximum of 5 PSI. Check for 

leaks and then ReLeaSeaIRpReSSuRe.

8.4 

On future opening and closing of closure, if 

leaks are detected, torque bolts or re-tape cable 

ports as needed. 


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78-8135-0094-5-K

9.0 OpeningSpliceClosure

9.1 

To re-enter splice closure, open bolt positions 

5, 7, 1 and 3 in seqence. All other bolt 

positions can be opened randomly.

10.0ClosureAccessories

3M

CableBranchportKit

2178-XSB-1.4B

3M

WallMountBracket2198

3M

adjustableaerialHanger

BracketKit2184

3M

FiberSpliceOrganizer

Tray2532

3M

4-portGrommet

4pGa


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78-8135-0094-5-K


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3M, Scotchlok and Dual Lock are trademarks of 3M Company. Scotch is a registered trademark of 3M Company.

Important Notice

All statements, technical information, and recommendations related to 3M’s products are based on information believed 

to be reliable, but the accuracy or completeness is not guaranteed.

 

Before using this product, you must evaluate it and 

determine if it is suitable for your intended application.

 

You assume all risks and liability associated with such use.

 

Any statements related to the product which are not contained in 3M’s current publications, or any contrary statements 

contained on your purchase order shall have no force or effect unless expressly agreed upon, in writing, by an authorized 

officer of 3M.
Warranty; Limited Remedy; Limited Liability. 

This product will be free from defects in material and manufacture for a period of one (1) year from the time of purchase.

 

3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR 
FITNESS FOR A PARTICULAR PURPOSE.

 

If this product is defective within the warranty period stated above, your exclusive 

remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product.

 

Except 

where prohibited by law, 3M will not be liable for any indirect, special, incidental or consequential loss or damage arising 
from this 3M product, regardless of the legal theory asserted. 

3

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6801 River Place Blvd.

Austin, TX 78726-9000

1-800-426-8688

www.3MTelecommunications.com

Please Recycle. Printed in USA.

© 3M 2010. All Rights Reserved.

78-8135-0094-5-K