Martin Audio Longbow W8L, User Manual

Page 1: ...lanning 7 3 1a Load Limits 7 3 1b Rigging Loading and Motor Hoists 7 3 2 Constructing Arrays 8 3 2a One Box at a Time 8 3 2b Multiple Enclosures on a Dolly 11 3 3 De rigging and Dismantling Arrays 13 4 SAFETY POINTS PROCEDURES 14 5 CARE MAINTENANCE 15 6 ANNUAL TEST CERTIFICATION 17 APPENDIX 1 W8L LARGE GRID DIMENSIONS 18 APPENDIX 2 W8L REAR SPLAY ANGLES 19 APPENDIX 3 W8L GENERAL DIMENSIONS 20 MART...

Page 2: ...ion on the capabilities adjustment and safe use of the W8L flying system Despite all the care taken in the design and manufacture of the flying system Martin Audio Ltd cannot guarantee complete safety whenever a flying system is used Safety in use is dependent upon the safe working practices of flying system users The advice and information contained in the manual does not absolve users from compl...

Page 3: ... its maximum safe lifting capacity in US tons or metric Tonnes For example a 1 ton motor is capable of lifting 1 ton Note 1 US ton 2000lbs 907Kg 1 Tonne 1000Kg 2205lbs 2 3 The Suspension Frame see appendix 1 The W8L suspension frame has two main pick up points one at the front and one at the rear The line between the two points passes through the left right centre of gravity of the array ensuring ...

Page 4: ...ted Never exceed the maximum load ratings marked on motors or suspension frames Always raise and lower the load slowly and avoid rapid changes in load distribution that could result in a sudden jolt to the suspension components 2 4 W8L Enclosure Rigging Hardware The W8L enclosure has steel rigging hardware at the front and rear of the enclosure At either side of the front of the enclosure a slidin...

Page 5: ...array including the chain hoists suspension frames enclosure its front and rear rigging assemblies and pins etc for damage cracks deformations broken welds corrosion or missing parts that could affect the strength and safety of the array The load bearing capabilities of the building or support structure should always be assessed inspected and certified by an appropriate professional engineer Marti...

Page 6: ...ted for maximum safety an additional secondary rigging point should always be provided and used Suspension points on the suspension frame that are not being used side to side points NOT diagonal for the chain motors may be used to attach safety bridles to a suitable secure overhead rigging point structurally independent of the main hanging point for the system It is recommended that the safety bri...

Page 7: ...h the array attached if they do not then the horizontal shearing forces introduced by misalignment will reduce the load safety margin of the flying system Because of this factor users must ensure the correct position and spacing of the rigging points But the most obvious result of mispositioning will be that the whole system will not array in the intended manner Normally a W8L system is flown from...

Page 8: ... raise the frame so that it is approximately 2 5 metres from the ground and horizontal Caution should be exercised by personnel near the unloaded frame as it will tilt to one side because its own centre of gravity is not on the same line as the pick up points Step 2 Roll the first box under the frame flip it over onto its runners skids manoeuvre it into position under the frame and remove its whee...

Page 9: ...ront tongues and locate the front tongues within the front rigging assembly of the box Secure the tongues in position with the quick release pin Note that a pin is locked when its central button is out Spring out each of the rear splay arms from its transit position and swing it up into the receptor at the rear of the frame Secure it in the 0 position by inserting the quick release pin stored at t...

Page 10: ...ny 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 Step 5 Lift the frame to a convenient height Step 6 Remove the pins at the front of the fully suspended box to release its captive tongues Physically lift the front of the hanging enclosure and locate the front tongues within its front rigging assemb...

Page 11: ...rame and raise the frame to a height sufficient to clear the dolly Caution should be exercised by personnel near the unloaded frame as it will tilt to one side because its own centre of gravity is not on the same line as the pick up points 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...

Page 12: ...ms 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...

Page 13: ...s essentially a reversal of the procedure followed to construct and fly the system and the same precautions and safety measures apply The safety wires to the roof structure are first of all released No one should be present in the area beneath the array whilst it is lowered in an even smooth and controlled fashion One box at a Time If the lowest boxes in the array are pinned in the tight 7 5 posit...

Page 14: ... lack of maintenance exposure to water or corrosive agents deformation or damage through improper storage or transport will all accelerate the process of deterioration and reduce the safety of the system Owners and users of the flying system must take all practical steps to protect the system from deterioration 5 The most important rule to follow when constructing and deploying the system is to ch...

Page 15: ...te the safety and well being of everyone equipment owners users performers and of course the public The principal flying system components are all finished in a black powder coat finish Under normal conditions of use this finish will unless damaged protect the main components against rusting and corrosion However it should be clearly noted that any exposure to water rain or corrosive chemicals dur...

Page 16: ...nd 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...

Page 17: ...on to the regular care maintenance regime detailed above every W8L flying system should ideally be submitted once a year to an independent test organisation for inspection and re certification If necessary the proof load test procedure outlined below should only be carried out by an experienced test engineer qualified and accredited to inspect test and issue safety certificates for mechanical lift...

Page 18: ...APPENDIX 1 W8L LARGE GRID DIMENSIONS Martin Audio W8L Flying System ENGLISH 18 GUIDES PRINT CONTENTS APPLICATIONS GUIDE ENGLISH ONLY ...

Page 19: ...APPENDIX 2 W8L REAR SPAY ANGLES Martin Audio W8L Flying System ENGLISH 19 GUIDES PRINT CONTENTS APPLICATIONS GUIDE ENGLISH ONLY ...

Page 20: ...s and dimensions should always be confirmed with Martin Audio before inclusion in any additional documentation In our efforts to develop and improve our products we reserve the right to change the technical specification of our products without notice Martin Audio tries whenever possible to minimise the effects of product changes on equipment compatibility Martin Audio Ltd Century Point Halifax Ro...

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Page 22: ...MARTIN AUDIO L O N D O N The Martin Experience ENGLISH W8L Flying System User s Guide CONTENTS PRINT GUIDES APPLICATIONS GUIDE ENGLISH ONLY ...