User manual ELECTRO-VOICE XLC RIGGING

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Manual abstract: user guide ELECTRO-VOICE XLC RIGGING

Detailed instructions for use are in the User's Guide.

[. . . ] XLC Rigging Manual ELECTRO-VOICE® XLC TM Rigging Manual Table of Contents Rigging-Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 XLC Rigging System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 1 Overview of the XLC Flying System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Secure any unused pins into the swing-arm transport hole in the frame. THE ENCLOSURES MUST BE BROUGHT OUT OF COMPRESSION AND THE SECOND LOCKING PIN REMOVED BEFORE THE ARRAY IS LOWERED TO THE GROUND FOR DISASSEMBLY. ELECTRO-VOICE® XLC TM Rigging Manual 12 Figure 6a: Flying XLC Systems with Front Dollies - Step 1 Figure 6b: Flying XLC Systems with Front Dollies - Step 2 Figure 6c: Flying XLC Systems with Front Dollies - Step 3 13 ELECTRO-VOICE® XLC TM Rigging Manual Dolly Clip Figure 6d: Flying XLC Systems with Front Dollies - Step 4 Figure 6e: Flying XLC Systems with Front Dollies - Step 5 ELECTRO-VOICE® XLC TM Rigging Manual 14 3. Rigging-Strength Ratings, Safety Factors, and Special Safety Considerations 3. 1 Working-Load Limit and Safety Factor Definitions The structural ratings for all of the XLC rigging components and complete loudspeaker systems are based on test results in which parts were stressed to failure. Manufacturers typically present the structural-strength ratings of mechanical components or systems as either the working-load limit (WLL) or the ultimate-break strength. Electro-Voice chooses to present the structural-load ratings of the XLC loudspeaker systems as the working-load limit. The working-load-limit rating represents the maximum load that should ever be applied to a mechanical component or system. THE USER SHOULD NEVER APPLY A LOAD THAT EXCEEDS THE WORKINGLOAD LIMITS OF ANY OF THE RIGGING COMPONENTS OR COMPLETE LOUDSPEAKER SYSTEMS DESCRIBED IN THIS MANUAL. The working-load limits for the XLC rigging components and complete loudspeaker systems described in this manual are based on an 8:1 safety factor. The safety factor is defined as the ratio of the ultimate-break strength divided by the working-load limit, where the ultimate-break strength represents the force at which a part will structurally fail. For example, if a part has working-load limit of 1, 000 lb (454 kg), it would not structurally fail until a force of at least 8, 000 lb (3, 629 kg) was applied, based on a 8:1 safety factor. However, the user should never apply a load to that part that exceeds 1, 000 lb (454 kg). The safety factor provides a margin of safety above the working-load limit to accommodate normal dynamic loading and normal wear. CAUTIONS for Working-Load Limits and Safety Factors The working-load limits defined by the manufacturer of any rigging component should never be exceeded. Electro-Voice bases the working-load limits of its XLC products on an 8:1 safety factor. Other manufacturers of rigging components may base their working-load limits on safety factors other than 8:1. For example, 5:1 safety factors are fairly common amongst rigging manufacturers because many regulatory agencies call for a minimum safety factor of 5:1. When an XLC loudspeaker system is installed where local regulations only require a safety factor of 5:1, Electro-Voice insists that the working-load limits of the XLC rigging never be exceeded and that an 8:1 safety factor be maintained for the XLC loudspeakers. The user is cautioned that some local regulations may require safety factors higher than 8:1. In that circumstance, Electro-Voice insists that the user maintain the higher safety factor as required by the local regulations throughout the entire XLC installation. It is the responsibility of the user to make sure that any XLC installation meets any applicable local, state or federal safety regulations. 15 ELECTRO-VOICE® XLC TM Rigging Manual 3. 2 Structural Rating Overview There are two independent strength ratings that, together, give a complete description of the overall structural performance capabilities of any XLC loudspeaker system. The strength of each individual rigging point; which is the combined strength of the rigging frame, the rigging frame components (front button bars, rear swing arm, quick-release pins, etc. ) and the enclosure. The total strength of the overall enclosure; which is a function of the combined forces from all of the rigging points acting on the rigging frames and enclosure as a whole. [. . . ] Never exceed the limitations or maximum recommended load specified by the hoist manufacturer. 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). [. . . ]

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