3M 4604GW Manuale utente
Instructions
January 1999
34-7046-2402-1-A
Reenterable Gel Wrap PST
Dome Closure
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Contents:
1.0 General ...........................................................................................................................................................4
2.0 Kit Contents....................................................................................................................................................4
3.0 PST Closure Capacity ....................................................................................................................................5
4.0 Cable Preparation ........................................................................................................................................... 5
5.0 Bonding and Grounding.................................................................................................................................6
6.0 Splicing...........................................................................................................................................................6
7.0 Sealing Collar Installation - 4604GW and 4606GW.....................................................................................7
8.0 Gel Wrap Installation - 4604GW and 4606GW ............................................................................................8
9.0 Closure Installation - 4604GW and 4606GW ...............................................................................................9
10.0 Sealing Collar Installation - 4608GW and 4608XL-GW ..............................................................................11
11.0 Gel Wrap Installation - 4608GW and 4608XL-GW......................................................................................12
12.0 Closure Installation - 4608GW and 4608XL-GW.........................................................................................13
13.0 Closure Reentry..............................................................................................................................................14
14.0 Retrofit on Gel Wrap PST Dome Closure .....................................................................................................15
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2.1 Additional Materials Required
• Vinyl Tape
• Shield Bond Connectors
• Splice Connectors
• Elastic Vinyl Film
• Grounding Wires
Note: All components must be installed per instructions to be effective.
4608GW and 4608XL-GW Closures
Closure Assembly (A)
Dome
Base
O-ring
Latch
Gel End Seal Core (B)
Gel Sealant Strip (C)
Gel Wrap (D)
PST (E)
Sheath Scuff (F)
4604GW and 4606GW Closures
Closure Assembly (A)
Dome
Base
O-ring
Latch
Gel End Seal Core (B)
Gel Sealing Strip (C)
Gel Wrap (D)
PST (E)
Sheath Scuff (F)
1.0 General
The 3M™Reenterable Gel Wrap PST Dome Closure is used for new and existing above-ground splices contained
within a pedestal or below-ground splices within a hand-hole.
2.0 Kit Contents
(C)
(F)
(C)
(D)
(E)
(A)
(B)
(E)
(F)
(A) (D)
(B)
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(W x D)
(H)
Closure
Outside Dim. 22.5"
(572 mm)
-
Closure
Height
Approx. Bundle
Diameter
Minimum Reliable
CAD Pedestal
Main
Cables
Terminal
Cables
Branch
Cables
Drop
Cables
*Approx.
Splice Range
2.5"
(64 mm) 3.9"
(99 mm)
0.4" - 0.6"
(10 - 15 mm) 0.4" - 0.6"
(10 - 15 mm)
0.7" -1.0"
(18 - 25 mm)
100 pr. - MS2
50 pr. - UR 300 pr. - MS2
100 pr. - UR
4604GW 4606GW 4608GW 4608XL-GW
3.8" x 2.8"
(97 x 71 mm) 5.6" x 3.9"
(142 x 99 mm)
0.35" max
(9 mm) max
2 max
0.35" max
(9 mm) max
2 max
0.35" max
(9 mm) max
2 max
0.35" max
(9 mm) max
2 max
7.0" x 5.4"
(178 x 137 mm) 7.0" x 5.4"
(178 x 137 mm)
22.5"
(572 mm) 23.5"
(597 mm) 33.5"
(851 mm)
5.3"
(135 mm) 5.3"
(135 mm)
46 8 12/70
0.5" - 1.1"
(13 - 28 mm) 0.9" - 1.6"
(23 - 41mm) 1.4" - 2.5"
(36 - 64 mm) 1.4" - 2.5"
(36 - 64 mm)
0.4" - 0.8"
(10 - 20 mm) 0.4" - 0.8"
(10 - 20 mm)
0.9" - 1.3"
(23 - 33 mm) 0.9" - 1.3"
(23 - 33 mm)
600 pr. - MS2
300 pr. - UR 900 pr. - MS2
400 pr. - UR
6"
(151 mm)
23"
(584 mm)
Scuff Both
Cables
Remove Sheath
Preparation A Preparation B
6"
(151 mm)
15"
(381 mm)
Scuff Both
Cables
Remove Sheath
W D
H
3.0 PST Closure Capacity
*Note: Based on two bank 4000-DWP and ScotchlokTM connectors installed per 3M practices.
Examples: 100 pair means 100 pair In and 100 pair Out or 100 pair straight splice.
3.1 Overall closure dimensions (See PST Closure Capacity Chart).
4.1 Remove sheath and scuff both
cables as noted for the following
closure sizes.
Preparation A: 4604GW, 4606GW, 4608GW
Preparation B: 4608XL-GW
4.0 Cable Preparation
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5.2 Install external ground wires to bonding connector studs and
run along the cables.
Note: For external grounding of sealed copper plant, a solid
copper wire bond must be used. For internal bonding/
grounding, a stranded, braided or any combination of
bonding/grounding wire may be utilized.
5.0 Bonding and Grounding
5.1 Install bonding connectors per system practice. Bonds should
be placed so that the studs of the connectors are facing forward.
5.3 Insulate bonding connectors by wrapping with vinyl tape.
6.0 Splicing
6.1 Splice per company practice.
6.2 Splice in tail of a terminal block when required.
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7.0 Sealing Collar Installation – 4604GW and 4606GW
7.1 Cut and remove packaging from gel end seal core.
7.2 Slit gel end seal ports along the length of plugs for desired number of
cables to be installed and remove plugs.
Use plugs 1 and 2 for main cables and plug 3 for branch or terminal
cable.
Note: A fourth plug is available for the 4606GW closure.
7.3 Install gel end seal core 2" (51 mm) below the sheath opening. Pull lips
of seal, created by cutting and removing plug, around cables. Remove
packaging from gel sealing strip. Wrap the gel sealing strip around the
core and ground wires with a slight tension.
Note: Place ground wires and drop wires between layers in gel sealing
strip. Ensure wires have one layer of gel between them and cable
sheath. There should be at least 0.25" (6 mm) between wires.
7.4 Squeeze gel end seal to insure a seal between layers and cables.
Note: Closure assembly must rest on end seal when placed over the splice.
Move end seal upward, if necessary.
1
3
2
lips
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8.3 Trim off excess gel wrap if needed. Make sure that the top of the
bundle is fully covered prior to trimming gel wrap.
8.4 Starting 2" (51 mm) below the gel end seal, begin tightly wrapping
the elastic vinyl film. Continue tightly wrapping the elastic vinyl
film over the length of the gel wrap and bundle. Make certain that
the top of the gel wrap is tightly covered by the elastic vinyl film.
Wrap three highly stretched layers of elastic vinyl film. Secure the
end of the elastic vinyl film with vinyl tape.
7.5 Pull cables together with tape or cable ties to ensure proper fit to
closure.
8.0 Gel Wrap Installation – 4604GW and 4606GW
8.1 Starting at bonding connectors, begin wrapping elastic vinyl film.
Continue wrapping the elastic vinyl film along the bundle until the
bundle is fully covered.
8.2 To install gel wrap, first remove the protective cover from one side.
Place the gel wrap behind the cables (the unprotected side should
face the bundle); position it so that the lower edge is near the bottom
of the end seal. Anywhere between the bottom and middle of the
end seal is acceptable. At this time remove the remaining protective
cover from gel wrap.
Wrap the gel wrap around the end seal so that the ends overlap and
press them firmly together. Continue wrapping the gel wrap along
the bundle, assuring that the ends overlap, until the bundle is fully
sealed.
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9.0 Closure Installation – 4604GW and 4606GW
9.1 Remove cardboard insert and pull core tail through the center of PST
until core is even with PST edge.
9.2 Slide PST over closure so that PST tail is pointed toward the top of
the closure. The core tail MUST be unwound upward. Position PST
bottom edge between the bottom of the wire form latch and the base's
top rib.
Note: Optional method is to put closure over the splice bundle and
position PST 2" (51 mm) below the gel end seal. While holding
the PST and closure with one hand, unwind the core by pulling
on the core tail with the other hand in an upward and outward
COUNTERCLOCKWISE direction.
9.3 While holding the PST and closure with one hand, unwind the core by
pulling on the core tail with the other hand in an upward and outward
COUNTERCLOCKWISE direction until approximately 0.5"(13 mm)
of the PST is shrunk onto the closure.
9.4 Push PST towards bottom of closure. This will invert the PST.
Note: Do not force the PST to slide on the closure during inversion.
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9.5 Pull the core material from the PST until the PST is even with
the bottom of the closure.
9.6 Place assembly over splice and onto gel end seal. Insure the
wireform latch and the 3M logo are facing forward.
9.7 Continuously push PST downward while pulling the rest of the core
material.
9.8 When the PST is in place, remove the core wrap from around the
cable.
9.9 For pedestal closure applications, secure the closure to pedestal,
mount terminal block and connect ground wires according to system
practice.
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