June 199834-7045-6337-7-A

Re-enterable PST Dome Closure

Instructions

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Contents:

1.0 General .......................................................................................................................................................... 42.0 Kit Contents ................................................................................................................................................... 43.0 PST Closure Capacity ................................................................................................................................... 54.0 Cable Preparation ......................................................................................................................................... 55.0 Bonding and Grounding ................................................................................................................................ 66.0 Splicing .......................................................................................................................................................... 67.0 4604 and 4606 Closure Installation .............................................................................................................. 78.0 4608 and 4608XL Closure Installation .......................................................................................................... 109.0 Closure Re-entry ........................................................................................................................................... 1310.0 Retrofit on PST Pedestal Splice Closures .................................................................................................... 13

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1.0 General

The 3M™ Re-enterable PST Dome Closure is used for new and existing above-ground splices containedwithin a pedestal.

2.0 Kit Contents

2.1 Additional Materials Required

Vinyl TapeShield Bond ConnectorsSplice Connectors

Note: All components must be installed per instructions to be effective.

4608 and 4608XL ClosuresClosure Assembly (A)

DomeBaseO-ringLatch

Gel End Seal Core (B)Gel Sealant Strip (C)PST (D)Ground Wires (E)Desiccant Bag (F)Sheath Scuff (G)Base Plate (H)

4604 and 4606 ClosuresClosure Assembly (A)

DomeBaseO-ringLatch

Gel End Seal Core (B)Gel Sealing Strip (C)PST (D)Ground Wires (E)Desiccant Bag (F)Sheath Scuff (G)

(D)

(G)(H)(F)

(B)

(C)(E)

(A)

(D)

(A)

(B)

(G)(C) (E)(F)

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3.0 PST Closure Capacity

(W x D)

(H)

ClosureOutside Dim.

22.5"(572 mm)

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ClosureHeight

Approx. BundleDiameter

Minimum ReliableCAD Pedestal

MainCables

TerminalCables

BranchCables

DropCables

*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. - UR300 pr. - MS2

100 pr. - UR

4604 4606 4608 4608XL

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)

4 6 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. - UR900 pr. - MS2

400 pr. - UR

*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.

4.0 Cable Preparation

4.1 Remove sheath and scuff bothcables as noted for the followingclosure sizes.

Preparation A: 4604, 4606, 4608Preparation B: 4608XL

6"(151 mm)

23"(584 mm)

Scuff BothCables

Remove Sheath

Preparation A Preparation B

6"(151 mm)

15"(381 mm)

Scuff BothCables

Remove Sheath

3.1 Overall closure dimensions (See PST Closure Capacity Chart). W D

H

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5.1 Install bonding connectors per system practice. Bondsshould be placed so that the studs of the connectors arefacing forward.

5.0 Bonding and Grounding

6.0 Splicing

6.1 Splice per company practice.

6.2 Splice in tail of a terminal block when required.

5.3 Insulate bonding connectors by wrapping with vinyl tape.

5.2 Install external ground wires to bonding connector studsand run along the cables.

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Note: Place ground wires and drop wires between layers in gelsealing strip. Ensure wires have one layer of gel betweenthem and cable sheath. There should be at least 0.25" (6mm) between wires.

7.3 Install gel end seal core 2" (51 mm) below the sheath opening.Pull lips of seal, created by cutting and removing plug, aroundcables. Remove packaging from gel sealing strip. Wrap the gelsealing strip around the core and ground wires with a slighttension.

7.2 Slit gel end seal ports along the length of plugs for desirednumber of cables to be installed and remove plugs.

Use plugs 1 and 2 for main cables and plug 3 for branch orterminal cable.

7.0 4604 and 4606 Closure Installation

7.1 Cut and remove packaging from gel end seal core.

Note: A fourth plug is available on 4606 closure.

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7.4 Squeeze gel end seal to insure a seal between layers and cables.

Note: Closure assembly must rest on end seal when placed overthe splice. Move end seal upward, if necessary.

7.5 Cut off top of foil bag which contains desiccant at dotted line andsecure bag at base of wire work area with a cable tie.

Note: Carefully follow health, safety and environmentalinformation given on product label or Material Safety DataSheet for desiccant bag.

7.6 Remove cardboard insert and pull core tail through the center of PSTuntil core is even with PST edge.

7.7 Slide PST over closure so that PST tail is pointed toward the topof the closure. The core tail MUST be unwound upward.Position PST bottom edge between the bottom of the wire formlatch and the base's top rib.

Note: Optional method is to put closure over the splice bundleand 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 otherhand in an upward and outward COUNTERCLOCKWISEdirection.

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7.12 Continuously push PST downward while pulling the rest of thecore material.

7.14 For pedestal closure applications, secure the closure to pedestal,mount terminal block and connect ground wires according tosystem practice.

7.13 When the PST is in place, remove the core wrap from around thecable.

7.9 Push PST towards bottom of closure. This will invert the PST.

Note: Do not force the PST to slide on the closure during inversion.

7.08 While holding the PST and closure with one hand, unwind the coreby pulling on the core tail with the other hand in an upward andoutward COUNTERCLOCKWISE direction until approximately0.5"(13 mm) of the PST is shrunk onto the closure.

7.11 Place assembly over splice and onto gel end seal. Insure thewireform latch and the 3M logo are facing forward.

7.10 Pull the core material from the PST until the PST is even withthe bottom of the closure.

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8.0 4608 and 4608XL Closure Installation

8.1 Cut and remove packaging from gel end seal core.

8.3 Install gel end seal core 2" (51 mm) below the sheath opening.Pull lips of seal, created by cutting and removing plug, aroundcables.

8.5 Remove packaging from small cut gel sealant strip and wrap eachground wire with the gel piece and press against core.

8.4 Cut a 1" (25 mm) piece from both ends of gel sealant strip to beused on ground wires.

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8.2 Slit gel end seal ports along the length of plugs for desirednumber of cables to be installed. Remove plugs.

Use plugs 1 and 2 for main cables and plugs 3 and 4 for branch orterminal cables.

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8.11 Remove cardboard insert and pull core tail through the center ofPST until core is even with PST edge.

8.10 Place base plate as illustrated between the cables on top of theend seal with the outside ribs facing upward.

Note: In order to fit 600 pair or larger cable, it may be necessaryto pull the cables together with tape or cable ties.

8.9 Cut off top of foil bag which contains desiccant at dotted line andsecure bag at base of wire work area with a cable tie.

Note: Carefully follow health, safety and environmentalinformation given on product label or Material Data Sheetfor desiccant bag.

8.6 Remove packaging from gel sealant strip.

8.7 Wrap the gel sealant strip around the core and ground wraps witha slight tension.

8.8 Squeeze gel end seal to insure a seal between layers and cables.

Note: Closure assembly must rest on end seal when placed overthe splice. Move end seal upward, if necessary.

Ribs

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8.16 Continuously push PST downward while pulling the rest of thecore material.

8.18 For pedestal closure applications, secure the closure to pedestal,mount terminal block and connect ground wires according tosystem practice.

8.17 When the PST is in place, remove the core wrap from around thecable.

8.12 Slide PST over closure so that the PST tail is pointed toward thetop of the closure. The core tail MUST be unwound upward.Position PST bottom edge within 0.5" (13 mm) of the bottom of thebase.

Note: Optional method is to put closure over the splice bundleand position PST 2" (51 mm) below the gel end seal. Whileholding the PST and closure with one hand, unwind thecore by pulling on the core tail with the other hand in anupward and outward COUNTERCLOCKWISE direction.

8.13 While holding the PST and closure with one hand, unwind the coreby pulling on the core tail with the other hand in an upward andoutward COUNTERCLOCKWISE direction until approximately 2.0"(51 mm) of the PST is shrunk onto the closure.

8.14 Place assembly over splice and onto gel end seal. Insure thewireform latch and the 3M logo are facing forward. Mate the platewith the base.

8.15 Push PST towards bottom of closure. This will invert the PST.

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10.0 Retrofit on PST Pedestal Splice Closures

10.1 Existing 3M™ PST Pedestal Splice Closures can be convertedto re-enterable closures by using the following procedures.

Cut PST from top to bottom and pull it away from the closure body and sealing collar.

10.2 Remove vinyl tape from butt of closure and slide closure off.

9.0 Closure Reentry

9.1 Re-entry of closure is accomplished by pulling out and pushingdown the wire form latch. The latch will lift the dome of theclosure from the base as it is pulled.

Note: Replace desiccant bag if necessary. Replacement bagscan be obtained from 3M, order #78-8054-9675-5.

9.2 To replace the closure dome, PLACE dome on to the base. Closethe wire form latch, insuring that it catches the protrusions on thedome.

Note: Wipe O-Ring clean if dirty and relubricate. Cable grease isacceptable.

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10.3 Remove vinyl tape from foil bag and slide foil bag off splice.

Note: The foil bag is not required in the reenterable domeclosure.

10.4 After completing repair, take gel sealing strip and remove thepackaging.

Note: For 4608 and 4608XL use gel sealant strip only.

Wrap the gel sealing strip around the existing mastic end seal.Place new dome closure on the seal.

10.5 If more than one wrap of gel is visible, trim the strip, andrewrap. Repeat until only one wrap of gel is visible. A4600GSS gel sealant strip may be necessary to build the sealto the proper size.

10.6 Wrap vinyl tape that is less than 1" (25 mm) wide around sealto hold tail in place, if necessary.

Note: Do not completely cover the outside surface of the sealwith tape.

Note: For 4608 and 4608XL, base plate is not required.

10.7 Complete assembly as outlined in the installation procedures.

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Important Notice

All statements, technical information and recommendations related to the Seller's products are based on information believed to bereliable, but the accuracy or completeness thereof is not guaranteed. Before utilizing the product, the user should determine the suitabilityof the product for its intended use. The user assumes all risks and liability whatsoever in connection with such use.

Any statements or recommendations of the Seller which are not contained in the Seller's current publications shall have no force or effectunless contained in an agreement signed by an authorized officer of the Seller. The statements contained herein are made in lieu of allwarranties, expressed or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purposewhich warranties are hereby expressly disclaimed.

SELLER SHALL NOT BE LIABLE TO THE USER OR ANY OTHER PERSON UNDER ANY LEGAL THEORY, INCLUDING BUT NOTLIMITED TO NEGLIGENCE OR STRICT LIABILITY, FOR ANY INJURY OR FOR ANY DIRECT, INDIRECT, INCIDENTAL ORCONSEQUENTIAL DAMAGES SUSTAINED OR INCURRED BY REASON OF THE USE OF ANY OF THE SELLER'S PRODUCTS.

Litho in USA© 3M 1998 34-7045-6337-7-A

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