3M 2178-XSB User manual

Fiber Optic Splice Case 2178-XSB
Flame Retardant Splice Case 2178-XSBFR
Instructions
1.0 General
The 3M™ Fiber Optic Splice Case 2178-XSB has been developed to accommodate 12 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 case can accommodate two 3M™ Fiber Optic Splice Trays 2532. The 2532 splice tray can
accommodate single fusion, single mechanical or 12-ribbon fiber.
September 2005
78-8135-0094-5-E
2.0 Contents
2.1 Kit contents are as follows:
1 - 2178-XSB closure body with bolts 2 - 3M™ Dual Lock™ Fasteners
2 - Sheath retention inserts 1 - Roll Scotch® Linerless Rubber Tape 130-C
1 - Multiport grommet (certain kits only) 1 - Packet of silicone lubricant
4 - 1" Washer trees 2 - 1" Hose clamps
1 - 1.4" Plug 1 - Sheath scuff
8 - Cable ties (blue) 1 - Tray support with strap
8 - Cable ties (green)
Visually inspect all components. If any component is missing or appears damaged, do not install and call
customer service at 1-800-426-8688 for a replacement product.
2.2 Additional materials required:
3M™ 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.
Multiport grommet included
in certain kits only.

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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" of cable sheath, starting at end of
sheath.
Figure 1
3.4 Place cable retention clamp on cable so that
hose clamp will be 1" (25 mm) from end of
sheath.
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. 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).
Install hose clamp and tighten to 40 in-lbs ± 5
in-lbs (4.6 N•m ± 0.6 N•m). Figure 2
Figure 3
3.5 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.
3.6 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.
Figure 4

378-8135-0094-5-E
3.6.1 If diameter of cable is close to either end of
the marked washer diameter range, try both
sizes and choose the snuggest fit available.
i.e. 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.
3.7 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 5
3.8 Using the supplied Scotch® Linerless Rubber
Splicing Tape 130-C, build up the collars to
the appropriate diameter from approximately
1.5” from sheath opening.
3.8.1 Collars should be built up to size of tape
gauge, but not larger. Approximate diameters
should be between 1.4–1.45" for large port
and 1.0–1.05" for the smaller port, or use tape
collar gauge provided to confirm diameters.
130-C Tape
Figure 6
3.9 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 7

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3.10 Using two (2) black cable ties, retain cables in
ports by placing ties both inside and outside
the base as shown in Figure 8. (White cable
ties used for picture clarity only.)
Figure 8
4.0 Drop Cable Preparation
4.1 Determine how many drop cables will be
passing through 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.
4.4 Grease approximately 2" of cable drop jacket.
4.5 Insert drop 1"–2" into multiport grommet and
then pull back out.
4.6 Insert drop the entire length of multiport
grommet.
4.7 Repeat steps 2.3–2.6 for the blank plugs as well.
Note: Leave future ports orientated to top of closure
for ease of future installations of drop.
Figure 9
4.8 Place a small amount of lubricant on the gasket
inside diameter in the area where it seals with
multiport grommet.
Note: Carefully follow health and safety environmental
instructions as given on Material Safety Data
Sheet for the silicone lubricant.
Extruded
Retention
Feature
Figure 10

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4.9 Place cable strain relief on grommet so that
hose clamp center is approximately 1" (25 mm)
from end of grommet. Tighten hose clamp
around grommet and cable strain relief to
40 in./lbs. ± 5 in./lbs. (4.6 N•m ± 0.6 N•m).
Note: Insure that extruded retention feature of strain
relief (Figure 10) has sufficient contact with
surface of grommet.
Approx. 1" (25 mm)
Figure 11
4.10 Place cable strain relief and multiport grommet
assembly into closure.
Figure 12
4.11 Place cable ties around multiport grommet
assembly inside and out as shown in Figure 13.
Note: White cable ties are shown for clarity.
Figure 13
4.12 Follow closure instruction for all other
preparation leading up to and including sealing
closure.

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5.0 Tray Installation and Splicing
5.1 Once cables have been anchored, place tray
support in position and tighten two (2) screws.
5.2 Cut 2 3M™ Dual Lock™ Fasteners in half.
Remove liner from 2 pieces of fastener and
place on tray support as shown. Mate second
2 pieces of fastener to the attached pieces.
Remove liner from back of top pieces and
attach first tray.
Figure 14
6.0 Fiber Management Inside Tray
6.1 Select appropriate splice holder based on type of
splicing to be performed
6.2 Remove adhesive backing and position splice
holders on tray.
Note: Positioning of splice holders should be such that a
minimum of 1.5 in. 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 of product label or the MSDS
sheet for the cleaner.
6.3 Route buffer tube or ribbon to desired tray cor-
ner.
Note: Do not exceed minimum 1.5 in. bend radius
during routing process.
6.4 Secure loose buffer tube to tray using the sup-
plied cable ties.
Figure 15

778-8135-0094-5-E
6.5 Place ribbon fiber into 1 to 1.5 in. of ribbon
retention grommet (cut segments as needed
from supplied length) and secure assembly into
tray using supplied cable ties. (A maximum
of 6 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 rib-
bon or buffer tube are immobilized. Over tighten-
ing can cause damage to buffer tube or ribbon.
Figure 16
6.6 Splice per company practice and place sleeves
into splice holders.
7.0 Splice Case Assembly
7.1 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.
7.2 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.
TORQUING SEQUENCE
Length
14.56"
(370 mm)
Width
10.10"
(257 mm)
Height
4.62"
(117 mm)
7.3 Closure should be flash tested by pressurizing
closure to a maximum of 5 PSI. Check for
leaks and then RELEASE AIR PRESSURE.
7.4 On future opening and closing of closure, if
leaks are detected, torque bolts or retape cable
ports as needed.

8.0 Opening Splice Case
8.1 To re-enter splice case, open bolt positions 5,
7, 1 and 3 in sequence. All other bolt positions
can be opened randomly.
Closure Accessories
3M™ 1.4" Cable Branch Port Kit 3M™ Mounting Bracket 2198
3M™ Fiber Optic Splice Tray
2538-12-DF/72-MF
3M™ Fiber Optic Splice Tray
2539-12-DF
3M™ Fiber Optic Splice Tray 2532
3M, Scotchlok and Dual Lock are trademarks of 3M Company.
Scotch is a registered trademark of 3M Company.
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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
Communication Markets Division
3M Telecommunications
6801 River Place Blvd.
Austin, TX 78726-9000
800.426.8688
Fax [phone]
www.3MTelecommunications.com
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© 3M 2005 78-8135-0094-5-E