3M 2178-XSB Manuale utente
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
3
78-8135-0094-5-K
1.0 General
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.
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 Kit Contents
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.
478-8135-0094-5-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 Cable Preparation
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
678-8135-0094-5-K
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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78-8135-0094-5-K
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
878-8135-0094-5-K
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 Drop Cable Preparation
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
10 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™ Multiport Grommet 6-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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