User manual ELECTRO-VOICE 859

[. . . ] 5 1. 2 Enclosure Rigging Hardware Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 3 XLVC Rigging Accessory Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2 XLVC Rigging and Flying Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2. 1 Array Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The grid spreader bars are then secured to the CBEAM yoke assemblies. First select the position on the CBEAM for the grid attachment (Grid Position A, B or C) and install the CBEAM yoke assemblies in those positions. The yoke assemblies are secured to the beam assembly by large clevis pins. To relocate a yoke assembly, remove the cotter pin from the clevis pin and remove the clevis pin from the beam assembly. Move the yoke to the desired hole and reinstall the clevis pin in the beam assembly holes, then secure the clevis pin with the cotter pin. ALWAYS MAKE SURE THAT THE EACH CLEVIS PIN SECURING EACH YOKE ASSEMBLY TO THE BEAM IS LOCKED IN POSITION BY THE COTTER PIN. DO NOT LIFT ANY ASSEMBLY OVERHEAD WITHOUT A COTTER PIN TO LOCK EACH CLEVIS PIN. To attach a grid to the CBEAM, remove the quick-release pins from the two yoke assemblies that will support the grid. Position the grid underneath the CBEAM and slide the two yokes over the two spreader bars. Insert the quick-release pins through each yoke and spreader bar. To make sure that the quick-release pins are fully locked into the yoke, always push the pins in all the way in so that spring-loaded balls are visible at the opposite side of the yoke. 27 ELECTRO-VOICE® X-Line Very CompactTM Rigging Manual ALWAYS MAKE SURE THAT EACH QUICK-RELEASE PIN SECURING EACH GRID SPREADER BAR IS FULLY LOCKED IN EACH YOKE. As shown in Figure 9d, the CBEAM may be picked up using one pickup point or two pickup points. The two pick up points may be raised and lowered as necessary to adjust the vertical tilt angle. When using two pick up points, the pickup rings are usually installed in Holes #1 and #30 at the extreme ends of the CBEAM for maximum front-to-back stability. Secure the swing arms to rigging channels on each side of the enclosure by inserting a quickrelease pin having a yellow lanyard into the 3° hole on the rigging channel, as shown in Figure 10a. The extra quick-release pins having a yellow lanyard will be used to attach the loose end of the swing arms to the bottom grid. There is insufficient room for both sets of swing arms to be retracted into the rear rigging channel during transport. Therefore, the bottom set of swing arms and quick-release pins will need to be removed when the enclosure is transported. Because the extra hardware must be removed, screws are not provided to attach the rear lanyards to the sides of the enclosure rigging. ALWAYS MAKE SURE THAT THE QUICK-RELEASE PINS ON THE HINGE BARS FULLY LOCK INTO THE ROUND HOLES IN THE FRONT RIGGING TUBES ON BOTH THE ENCLOSURE AND THE GRID. ELECTRO-VOICE® X-Line Very CompactTM Rigging Manual 30 Position an XLVC grid underneath the XLVC loudspeaker system, as shown in Figure 10a. Insert the loose swing arms on the bottom of the enclosure into the rear rigging channels on the grid and attach the arms to the grid in the top hole with the quick-release pins. Swing the grid up and insert the exposed hinge bars at the bottom front of the enclosure into the front rigging tubes on the grid and secure using the quick-release pins. The standard grid is now attached to the bottom of the enclosure. ALWAYS MAKE SURE THAT THE LEFT AND RIGHT SWING ARMS ON THE ENCLOSURE ARE LOCKED INTO THE SAME HOLES FOR THE SAME VERTICAL SPLAY ANGLE ON THE GRID. ALWAYS MAKE SURE THAT THE QUICK-RELEASE PINS FOR EVERY SWING ARM PASS THEROUGH THE HOLE IN THE SWING ARM AND ARE FULLY LOCKED IN THE RIGGING CHANNELS IN THE GRID. A 5/8-inch shackle can be installed into the center position of the spreader bar on the bottom grid. A ratchet strap can be attached to the shackle to enable adjustment for pull up. The entire array can then be lifted, as shown in Figure 10b, and the vertical tilt angle adjusted as necessary using the ratchet strap. [. . . ] Always follow manufacturers' recommendations for operation, inspection, and certification. Always raise and lower the load slowly and evenly, avoiding any rapid changes in speed or shifting loads that could result in a sudden jolt to the suspended system. Building, Tower or Scaffold Supports: Prior to each use, the strength and load-bearing capabilities of the building, tower or scaffold structural supports should be evaluated and certified by a professional engineer as being adequate for supporting the intended rigging system (including the loudspeakers, grids, chain hoists and all associated hardware). Prior to each use, inspect the building, tower or scaffold structural supports for any cracks, deformation, broken welds, corrosion, missing or damaged components that could reduce the structural strength. [. . . ]