User manual MARTIN AUDIO W8L

[. . . ] ENGLISH ONLY CONTENTS < > PRINT APPLICATIONS GUIDE GUIDES CONTENTS (ENGLISH) 1 FLYING SAFETY 2 THE SYSTEM DESIGN 2. 1 W8L Rigging System Overview 2. 2 Chain Motors 2. 3 The Suspension Frame 2. 4 W8L Enclosure Rigging Hardware 2. 5 Safety Factor 2. 6 Safety Wires 3 PLANNING AND CONSTRUCTING ARRAYS 3. 1 Planning 3. 1a Load Limits 3. 1b Rigging, Loading and Motor Hoists 3. 2 Constructing Arrays 3. 2a One Box at a Time 3. 2b Multiple Enclosures on a Dolly 3. 3 De-rigging and Dismantling Arrays 4 SAFETY POINTS & PROCEDURES 5 CARE & MAINTENANCE 6 ANNUAL TEST & CERTIFICATION APPENDIX 1 W8L LARGE GRID DIMENSIONS APPENDIX 2 W8L REAR SPLAY ANGLES APPENDIX 3 W8L GENERAL DIMENSIONS Page No 2 3 3 3 3 4 6 6 7 7 7 7 8 8 11 13 14 15 17 18 19 20 MARTIN AUDIO LONDON The Martin Experience Martin Audio ­ W8L Flying System ENGLISH ONLY ENGLISH CONTENTS < 1 > PRINT APPLICATIONS GUIDE GUIDES FLYING SAFETY The prime concern in the design and use of loudspeaker flying systems is safety ­ the safety of the public, performers and all personnel who work with flying systems. Suspension of loudspeaker systems should only ever be undertaken by specialist, trained personnel working in association with professional riggers. Safety is crucially dependant on safe working practices, which must be learned, understood and adhered to. Everyone involved in the deployment of flown loudspeaker systems has a duty to safety. [. . . ] Step 2 Pre-rig the splay angles of the lower enclosures off-load by releasing the rear splay arm and swinging it up into the rear channel of the enclosure above. Remove a quick release pin from its storage position at the rear of the enclosure and insert it through the appropriate marked channel hole and through the slot in the splay arm. Note that a pin is locked when its central button is out. 11 Martin Audio ­ W8L Flying System ENGLISH ONLY ENGLISH CONTENTS < > PRINT APPLICATIONS GUIDE GUIDES Roll the dolly into position beneath the suspension frame. Remove the pins at the front of the frame which secure its captive tongues. Lower the frame onto the top box, locating the front tongues within the front rigging assembly. Release the rear splay arms of the top box and attach them to the rear receivers in the suspension frame using the quick release pins stored at the rear of the top enclosure. Safety Note Use great care when handling quick release pins, front tongues and rear splay arms. Never, in any circumstances, insert a finger or hand into the slot in the rear splay arm. Never insert fingers or hands between boxes when chain hoists are moving. As it lifts, the slots in the splay arms will slide on the quick release pins until they achieve the pre-set splay angle. At this point, a second quick release pin (supplied with the dolly) may be inserted in the rear channels to rigidise the array if required. Note that the second pin is optional and intended to prevent the rear of the array from collapsing upwards under a high degree of tilt or when a separate pull-up under-frame is used. Step 4 Remove the pins securing the bottom box to the dolly and lift the block of boxes off the dolly. Safety Check As the array is lifted off the dolly, make sure that all the quick release pins are in their correct locations and secure. Check that the splay angles are the same on both sides of each enclosure. Step 5 Wheel the dolly out of the way and then roll another dolly beneath the array. Pre-rig the splay angles of the lower boxes on the dolly as in Step 2. 12 Martin Audio ­ W8L Flying System ENGLISH ONLY ENGLISH CONTENTS < Step 6 > PRINT APPLICATIONS GUIDE GUIDES Remove the pins at the front of the lowest suspended box to release its captive tongues. Land the suspended array on top of the dolly, locating the front tongues within the front rigging assembly of the topmost box on the dolly. Release the rear splay arms of the topmost box on the dolly and attach them to the rear of the box above, selecting the desired splay angle by inserting the quick release pins stored at the rear of the enclosure into the selected holes in the rear channel. Note: When landing the suspended array on the next dolly, great care must be taken with motor control. This is important to ensure that the entire weight of the suspended array is not borne by the lowest cabinet, the dolly itself or transferred through the dolly to the staging ­ none of which may be able to bear the weight of the entire array. Step 7 Repeat Steps 3 to 6. 3. 3 De-rigging and Dismantling the Array. De-rigging and dismantling the array is essentially a reversal of the procedure followed to construct and fly the system and the same precautions and safety measures apply. [. . . ] On releasing the rear splay arm, the arm should disengage and rotate easily and positively lock into place when re set. The sliding tongue at the front of the enclosure should move freely and be examined for signs of deformation or undue wear. A close visual inspection should be made of the entire surface of the bars points to look out for are any signs of buckling, twisting or other deformation. The surface and the weld seams of the bars should also be clean and show no signs of corrosion or erosion and the manufacturers labels and engraved marks should not have been tampered with. [. . . ]