2.9 Refer to Figure 4. Station one man inside reflector assembly being careful not to step, stand or sit on diameter setting bands. Install final match-marked reflector segment (BC) by loosely attaching to diameter setting bands with edge joining plates while man inside moves reflector segment from vertex end to enable capscrew hardware installation. Loosely attach remaining joining plates as previously described. If standing or walking on reflector becomes necessary, concentrate major portion of body weight toward middle of reflector segments. 2.10 Begin attaching corresponding reflector rib segments at match-marked position A-A using reflector segment seam hardware. Insert capscrews from inside (concave side) of reflector segments. Firmly push bolts through holes until bolt head is flush with reflector surface. Note: Slight pressure on reflector segment may be necessary to enable proper alignment. Do not attempt to thread bolts into holes. |
2.1 Install a 200215 shim between each reflector segment around outer perimeter of reflector assembly. Tighten setting band and joining plate hardware beginning with match-marked position A-A using 7/16 inch (11 mm) deep socket with ratchet and 3/16 inch (5 mm) Alien wrench. Continue this procedure around entire perimeter of reflector. 2.12 Begin tensioning reflector seam hardware at outer perimeter of match-marked position A-A and continue this procedure around reflector in concentric circles while progressing inward toward reflector vertex. Note: Near vertex area, it may become necessary to push down on mounting ring hub to narrow segment gap before tightening hardware. 2.13 Tighten center setting band hardware and review following hardware tensioning procedure before beginning back structure assembly. Note: Diameter setting bands should be taut at this point. If not, check to ensure proper leveling of temporary supports. |
Figure 4 |
2.6 Refer to Figure 3. Place two adjacent match-marked reflector segments (CD and AF) on temporary supports at opposing positions. Raise reflector segments and loosely attach to mounting ring hub and remaining portion of diameter setting bands and edge joining plates using capscrew hardware. Note: Use of supplied stick wax on setting band hardware will ease later removal of setting band assembly. 1.2 The main reflector is segmented in a six-piece configu- ration to reduce shipping volume and facilitate transport to remote sites or rooftops. 2.7 Loosely attach 49693 joining plates inside reflector rim and across all reflector seams. Note: Insert capscrews from outside reflector rim. 2.8 Place additional match-marked reflector segment (EF) on temporary support and loosely attach to mounting ring hub and diameter setting bands with corresponding seam hardware and joining plates installed across reflector seams as previously described. |
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Figure 3 |
Tensioning Procedure Bolts must be properly tensioned to avoid slippage between bolted surfaces under high loads. Slippage can distort reflector surface during hoisting. Make sure all bolts are tensioned and replace any that break. Refer to Figure 5. Proper tensioning:
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