2179-CD Series Fiber Optic
Splice Closure
Installation Instructions
1.0 Product Introduction
The new 3MTM 2179-CD Series Fiber Optic Splice Closure
can be used in buried, underground, aerial, and pedestal
applications. This dome closure meets the need of all splice
protection applications in a fiber optic network.
Each closure has six cable entry ports (five circular ports
and one oval port). These cable ports allow the cables to be
used for butt or inline splices. The rigid non-encapsulated
case provides moisture and dust protection.
2.0 Specifications
2.1 Closure body:
Closure length:
Closure outer diameter:
Closure weight (no accessory):
Max. Cable diameter in oval port:
Max. Cable diameter in every circular port:
20.1” (510mm)
7.1” (180mm)
2Kg
1.26” (32mm) or 2* 0.8” (2*20mm)
0.8” (20mm)
Grounding
mechanism
(optional)
Oval Port
2.2 Splice Tray Capacity:
Max Capacity of Splice Tray
Max Capacity of Fiber Splice Tray
Total
2.3 Temperature range
Between -40 and 45
Between -50 and 70
4
24
(working condition)
(storage and transport)
2.4 Life expectancy:
30 years
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Round Ports
3M 2522-C Splice Tray
Loose fiber
4*24=96
3.0 Kit Contents
3.1 3M™ 2179-CD series Splice Closure Kit Contents:
Note: Examine kit
contents. Ensure
that all
components are
present as per the
packing slip and
that they are in a
usable and defect
free condition.
3.2 Special Tools Requirement:
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•
•
•
•
•
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Hot air gun: Min. required hot-air temperature 350
Hacksaw
Side Cutting Pliers
Electrician's Scissors
Needle Nose Pliers
Tapeline
Wire Cutter for Steel Strength Members
Wrench
4.0 General precautions
- Proper sealing of the 2179-CD Series Closure depends on strict adherence to these
instructions and the use of specified materials. Deviations can cause leakage or
case damage. Maintain clean sealing surfaces to ensure proper sealing. DO NOT
USE any release agents or other unspecified materials to prevent loss of sealing
effectiveness.
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Do not use damaged sleeve nor trim heat-shrinkable sleeve before installation.
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Generators used should have enough capacity for the hot air gun utilization.
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5.0 Cable installation
5.1 Ensure that the dome and end cap are in closed condition. Choose the cable entry
according to the fiber optic cable’s diameter. Open the oval port for cable entry by cutting
the port at the ridge with a hacksaw. De burr the inner edge of the port opening with an
abrasive strip.
5.2 After cutting open the oval cable entry port, separate the dome and end cap of the
closure by releasing the locking tab of the closure. Open the clamp lever and remove the
clamp.
5.3 Remove any dirt, mud or other
contaminants from the cable sheath for
approximately 2 meters with a clean cloth.
Take the oval cable seal and slide it over the
cables. The non-coated edge of the sleeve and
the arrows should be pointing to the base of the
closure.
6.0 Cable Preparation
Note: When removing cable sheath, do not cut, kink, or damage underlying layers. If
damage occurs, cut back sheath component to adequately inspect and repair.
6.1 Remove the outer cable sheath (and shield or
armor, if present). Remove all cable greases
with the cleaning tissues and IPA provided in
the kit.. Cut central strength member at a distance
of 65mm from outer jacket.
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6.2 Bonding and grounding for shielded cable
(optional):
Cut a 10mm (0.4 ) “L” slot at the end of the
cable. Install the Shield Bond Connector. The two
jaws wrap the opened shield then tighten it
carefully. Use insulation tape to protect the
metallic parts. Fix the other end of the earth cable
on to the inside of the earth stud provided on the
end cap of the closure.
6.3 Cut the loose tube, at a distance of 35mm
from the cable sheath. Remove the loose tube
and degrease the fiber bundle.
Select a transportation tube which fits over
the loose tube. Slip transportation tube over
fibers and the loose tube.
6.4 Fix the cable kit on the cable with the
clamp. Pull back the cable to the base; align
the cable kit to the screw position.
6.5 Install the screw and washer into the
strength member fixation device. Slide the
cable strength member under the washer and
tighten the screw. Cut the excess length of
the cable strength member or bend it over.
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7.0 Sealing of oval port
7.1 Thoroughly clean oval port and cable
sheath with cleaning tissue over a distance of
100mm from the edge of the port.
7.2 Abrade oval port and cable sheath
circumferentially on the cleaned area with
the abrasive strip.
7.3 Place oval heat shrink seal over the oval
port and cable. Mark the sleeve length onto
the cable.
7.4 Match the blue line of the aluminium
cable protection foil with the marks on the
cables. Wrap aluminium cable protection foil
around cable.
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7.5 Slide the oval heat shrink seal over the
oval port. Install the branch-off clip. Check
that the heat-shrinkable sleeve butts up
against the fiber optic splice closure base and
the branch-off clip is completely inserted.
Tape the two cables together.
7.6 Shrink the oval cable seal on the fiber
optic splice closure base with the hot air gun
device with reflector. Shrink sleeve until the
green thermo-indicating paint turns black.
7.7 Shrink down the end of the sleeve on the
cable side. Heat until the sleeve shrinks down
on the cables and take care that the green
thermo-indicating paint turns black. Post-heat
the clip on both sides till the adhesive shows
a proper flow on the clip between the two
cables.
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8.0 Tray installation and Organization of the fiber
8.1 Install the splice trays onto the tray holder.
8.2 Splice fibers from the bottom tray of tray bracket.
It is easy to splice because the trays can be folded.
8.3 Each splice tray accommodates 24 fiber
splices maximum and each side of the tray holds
a maximum of 2 transportation tubes.
8.4 Remove the tray cover. Align the
transportation tubes along the tray. Place a mark
on each tube on tray side at 30 mm from tray
edge. Carefully cut the transportation tubes at the
mark and secure to splice tray with two tie
wraps.
8.5 Slide the heat-shrinkable splice protection over the fiber. Position the heat shrinkable
splice protection sleeve into the splice chamber and ensure proper fusion of the fiber and
shrinking of the splice protection sleeve.
8.6 After each splice is made, the splice should be stored in the splice holder. Do not
deform the splice protector during insertion. The fiber slack should be coiled into the
tray. Finally, reposition the tray cover.
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8.7 Proceed with the next tray splicing as
described above.
Note: Use the tray stopper to hold the
adjacent trays to enable easy access and
working.
Tray Stopper
9.0 Splice Closure installation and sealing
9.1 After all splices are made, place the trays
in normal position and bind them with the
Velcro tape provided.
9.2 Ensure that the seal areas of the end cap
and the dome of the closure and sealing ring
are clean.
Position the sealing ring (O ring) in the slot
provided on the end cap of the closure.
9.3 Place the dome into the closure base.
Then rotate dome to align arrowheads for
dome and base interface.
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9.4 Put the clamp around the base/dome
interface. Close the clamp.
10.0 Splice closure re-entry
10.1 Remove the clamp.
10.2 Remove the dome carefully, avoiding any damage to the sealing ring and fiber
management.
10.3 Remove gently the sealing ring. Keep the sealing ring and seal area of the closure
free of dirt.
11.0 Cable installation in circular port
Open the circular port for cable entry by
cutting the port at the ridge with a hacksaw.
Except for the branch-off clip, other
processes are same as those mentioned in
points 5.0, 6.0 and 7.0.
12.0 Instructions for safe disposal
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Do not dispose Unused solvent into water bodies.
Do not burn used product in the open
Dispose off used product in a sanitary land fill
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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
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regardless of the legal theory asserted.
Communication Markets Division
3M Electro & Communications India Pvt Ltd
Raheja paramount, 138, Residency Road,
Bangalore – 560025
India
Board : 00-91-80-66595600
Fax : 00-91-80-2223 2373
www.3MTelecommunications.com
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