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for grid assembly design. Never exceed the limi-
tations or maximum recommended load for the
grid assemblies.
Chain Hoists: Prior to each use, inspect the chain
hoist and associated hardware (including motor, if
applicable) for any cracks, deformation. broken
welds, corrosion, missing or damaged components
which could reduce the hoist strength. Replace any
damaged chain hoists. Never exceed the limitations
or maximum recommended load specified by the
hoist manufacturer. 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. Never exceed the
limitations or maximum recommended load for the
chain hoists.
Building, Tower or Scaffold Supports: Prior to
each use, the strength and load-bearing capabili-
ties of the building, tower or scaffold structural
supports should be evaluated and certified by a
professional engineer as being adequate for sup-
porting the intended rigging system (including the
loudspeakers, grids, chain hoists and all associ-
ated hardware). Prior to each use, inspect the
building, tower or scaffold structural supports for
any cracks, deformation, broken welds, corrosion,
missing or damaged components which could re-
duce the structural strength. Damaged structural
supports should be replaced or repaired and re-
certified by a professional engineer. Never ex-
ceed the limitations or maximum recommended
load for the supports.
Miscellaneous Mechanical Components: Prior
to each use, inspect all mechanical components
(chain, wire ropes, slings, shackles, hooks, fit-
tings, etc.) for any cracks, deformation, broken
welds, slipping crimps, fraying, abrasion, knots,
corrosion, chemical damage, loose screws, miss-
ing or damaged components which would reduce
the maximum strength specified by the compo-
nent manufacturer. Replace any damaged me-
chanical components. Never exceed the
limitations or maximum recommended load for the
mechanical components.
5. REFERENCES
5.1 Rigging References
[1]
W.E. Rossnagel, L.R. Higgins & J.A.
MacDonald, Handbook of Rigging for Construc-
tion and Industrial Operations , McGraw-Hill Book
Company, New York, NY, USA (1988).
[2]
J.O. Glerum, Stage Rigging Handbook ,
Southern Illinois University Press, Carbondale, IL,
USA (1987).
[3]
P. Carter, Backstage Handbook , Broad-
way Press, New York, NY, USA (1988).
page 24
[4]
ATM Fly-Ware™, Riggermeister Produc-
tion Rigging Guide , ATM Fly-Ware™, Carson, CA,
USA (1995).
[5]
Wire Rope Technical Board, Wire Rope
Users Manual , American Iron and Steel Institute,
Stevensville, MD, USA (1985).
[6]
Broderick & Bascom Rope Company,
Rigger's Handbook , Sedalia, MO, USA (1993).
[7]
MacWhite Wire Rope Company, Catalog
of Tables, Data and Helpful Information , Kenosha,
WI, USA (1991).
[8]
Acco Chain & Lifting Division, Chain Sling
User's Manual , Acco Corporation, York, PA, USA
(1992).
Newberry, W.G., Handbook for Riggers ,
[9]
Newberry Investments Company, Calgary,
Alberta, Canada (1989).
5.2 Mechanical Engineering References
J.L. Meriam & L.G. Kraige, Engineering
[10]
Mechanics, Volume One - Statics, John Wiley &
Sons, Inc., New York, NY, USA (1992).
[11]
J.L. Meriam & L.G. Kraige, Engineering
Mechanics, Volume Two - Dynamics, John Wiley
& Sons, Inc., New York, NY, USA (1992).
J.E. Shigley & C.R. Mischke, Mechanical
[12]
Engineering Design , McGraw-Hill Book Company,
New York, NY, USA (1989).
[13]
A. Jensen & H.H. Chenoweth, Applied
Engineering Mechanics, McGraw-Hill Book Com-
pany, New York, NY, USA (1983).
APPENDICES
A. SERVICING THE X-ARRAY™ RIGGING
The following service items are available for ser-
vicing the X-Array™ loudspeaker rigging:
Enclosure Rigging Hardware: The rigging hard-
ware should not require service by the user.
Enclosure Alignment-Foot Replacement: Each
foot is installed with four wood screws. If a screw
hole strips out during installation, rotate the foot
and reinstall the screws. The following service
parts are available:
Male Alignment Feet:
Female Alignment Feet:
Alignment-Foot Screw:
Electro-Voice, 600 Cecil St., Buchanan, MI 49107
USA, 616-695-6831
Rigging Hinge Service: The hinge knob/locking-
pin assembly on the Xrhl, Xrhg or Xrhp may be
repaired with the hinge knob/locking-pin repair kit.
To remove the knob/locking-pin assembly from
the hinge, first unscrew the nut on the knob, then
unscrew the knob from the pin. To install a new
28333
28334
63088-CP
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