3M Better Buried Closures ™ Instructions March 2016 78-0015-2945-8-A
Contents: 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 General.......................................................................................................................................................... 3 Kit Contents................................................................................................................................................... 3 Closure Selection Guide....................................................................................................................
1.0 General 1.1 The 3M™ Better Buried Closures are rigid body splice closures designed for direct burial. When filled with a reenterable encapsulating compound, the closure can be reentered for splice rework. 2.0 Kit Contents 2.1 The kit contents are shown below: Snap-in Caps Closure Body Double End Cap Strain Relief Bars Large Hose Clamps Single End Cap Funnel Locking "H" Insulating Sleeves Small Hose Clamps Foam Strips 883656 Visually inspect all components.
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4.0 LHS End Cap Installation 5.0 Cable Preparations 4.1 End Cap Installation on Cut Cables Procedure: 5.1 Position and secure cables according to the splice opening for the closure size selected. See closure dimension guide for the maximum splice openings. 5.2 Scuff 6" (152 mm) of outer sheaths as shown. 5.3 Wrap all scuffed areas with Scotch® All Weather Telephone Vinyl Plastic Tape 88T. a. Select desired port(s). b.
3" – 9" Kits e. Remove inner sheath, except for 1-1/2" (38 mm) at both ends of splice opening. Strain Relief Bar f. Insert base assemblies of the shield connectors between the inner sheath and the shield, 180° apart. Insert base assemblies of shield connectors between the core wrapper and the shield 180° apart. Install first nut and torque to 45 ± 5 in-lbs 2" Kit Strain Relief Bar Bonding Braid 883657 e. Splice conductors per standard procedure. f.
o. Install second bond bar if required. p. Install hose clamps over ends of strain relief bars. Note: Rotate hose clamps so heads will not obstruct fill ports on body. 1/2" 13mm q. Overwrap the strain relief hose clamps with DR tape to prevent hose clamp tails from flagging. 6.7 r. Build outer sheath sealing collars just beyond ends of strain relief bars. Outer sheath sealing collars are one (1) wrap of 3/4" (19 mm) B sealing tape completely overwrapped with highly stretched DR tape (white side out).
.0 Closure Extension 8.1 Cut a closure body in half using a cable saw or similar tool. Cut grooves are provided on closure bodies. 8.2 Assemble the closure by staggering the cut sections. Position hose clamps. Tape seams with LR tape or vinyl tape. Half Body Top Full Body Bottom 8.3 9.2 883661 9.3 Full Body Top Half Body Bottom 75350 Fill closure with compound as outlined in Sections 6.4 - 6.11. 9.0 Adding Service Wires (2" - 5", 50mm - 125mm Closures) 9.1 Force service wire through port.
