3M™ Fiber Optic Splice Closure 2178-XSB/XSB-FR & 2178-XLB/XLB-FR 3M™ Cable Addition Kit 2181-XB/XB-FR Instructions July 2010 78-8135-0094-5-K 3
1.0 General 1.1 3M™ Fiber Optic Splice Closure 2178-XSB 2178-XSB Height 4.62" (117 mm) The 3M™ Fiber Optic Splice Closure 2178-XSB has been developed to accommodate up to 48 single fusion splices, and 144 mass fusion splices. The closure has two 1" ports and one 1.4" port in the center. 2178-XLB Height 5.75" (146 mm) 2181 Adapter adds 2.05" (52 mm) The 2178-XSB splice closure can accommodate two 3M™ Fiber Optic Splice Trays 2532.
2.2 3M™ Fiber Optic Splice Closure 2178-XLB/XLB-FR Kit Contents C. M. A. I. E. L. B. 3M™ Multiport Grommet included in certain kits only. K. N. H. D. J. F. A. B. C. D. E. F. G. 2.3 G. 1 - 2178-XLB closure body with bolts 2 - Sheath retention inserts 1 - 3M™ Multiport Grommet (certain kits only) 4 - 1" Washer trees 1 - 1.4" Plug 8 - Cable ties (blue) 8 - Cable ties (green) H. 2 - 3M™ Reclosable Dual Lock™ Fasteners I. 1 - Roll Scotch® Linerless Rubber Splicing Tape 130C J.
2.4 Additional materials required: 3M™ Fiber Optic 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. 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.
3.4.3 If securing the strength members is not required, the front half of the sheath retention inserts can be removed as shown in Figure 4. 3.4.4 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). Figure 4 3.4.5 Cut a small length of the unused sheath scuff and place it grit side inward inside of the hose clamp. Note: The cut piece of sheath scuff should wrap at least halfway around the cable sheath, but not completely around the cable.
3.6 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. 3.7 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. 3.7.1 If diameter of cable is close to either end of the marked washer diameter range, try both sizes and choose the snuggest fit available. 3.7.
3.9.1 Collars should be built up to 1.45" diameter for large port and 1.05" diameter for the smaller port. Use the tape collar gauge provided in kit to measure for required diameter. 1.05" end 1.45" end Figure 10 3.10 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.
3.12 For ribbon transition to tray applications, secure the transition tube to the bracket mounted in base. Figure 13 3.13 When tray support and tray are in place, mount the other end of the transition tube to the tray. Figure 14 4.0 Drop Cable Preparation 4.1 Determine how many drop cables will be passing through the 3M™ Multiport Grommet. 4.2 Remove sheath on drops exposing buffer tubes to a length required per company practice. 4.
4.4 Grease approximately 2" (50 mm) of cable drop jacket. 4.5 Place a small amount of lubricant on the gasket inside diameter in the area where it seals with the 3M™ Multiport Grommet. Note: Carefully follow health and safety environmental instructions as given on Material Safety Data Sheet for the silicone lubricant. Figure 16 4.6 Insert drop 1"–2" (25 mm—50 mm) into multiport grommet and then pull back out. 4.7 Insert drop the entire length of multiport grommet. 4.8 Repeat steps 4.3–4.
5.3 Secure cable strain relief brackets and the strain relief bracket from the closure to the grommet with the hose clamp as shown. Tighten the hose clamp to 40 in.-lbs. ± 5 in.-lbs. (4.6 N•m ± 0.6 N•m). Note: Ensure that extruded retention feature of strain relief has sufficient contact with surface of grommet. Figure 19 5.4 Tighten the six K-connector nuts to 40 in.-lbs. ± 5 in.-lbs. (4.6 N•m ± 0.6 N•m) each. Figure 20 5.
6.0 Tray Installation and Splicing 6.1 Once cables have been anchored, place tray support in position and tighten two (2) screws. 6.2 Cut two 3M™ Reclosable Dual Lock™ Fasteners in half. Remove liner from two pieces of fastener and place on tray support as shown. Mate second two pieces of fastener to the attached pieces. Remove liner from back of top pieces and attach first tray. Figure 21 7.0 Fiber Management Inside Tray 7.
7.5 Place ribbon fiber into 1"–1.5" (25 mm–40 mm) of ribbon retention grommet (cut segments as needed from supplied length) and secure assembly into tray using supplied cable ties. Be sure to use two cable ties per each buffer tube. (A maximum of six 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 ribbon or buffer tube are immobilized. Over tightening can cause damage to buffer tube or ribbon.
9.0 Opening Splice Closure 9.1 To re-enter splice closure, open bolt positions 5, 7, 1 and 3 in seqence. All other bolt positions can be opened randomly. 10.0 Closure Accessories 3M™ Cable Branch Port Kit 2178-XSB-1.
78-8135-0094-5-K 15
3M, Scotchlok and Dual Lock are trademarks of 3M Company. Scotch is a registered trademark of 3M Company. Important Notice All statements, technical information, and recommendations related to 3M’s products are based on information believed to be reliable, but the 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.
