HK Audio COSMO Series Instructions For Use Manual page 24

COSMO Line Array – Instructions for use
• Ground stacks
Stack speakers carefully so as not to damage or impair the components' physical integrity:
• Stack speakers on a level and firm floor or ground surface to ensure sufficient stability.
• If you wish to curve the stack to provide near-fill or bleacher coverage, make sure the
stack's center of gravity remains well within the rigging frame.
• Secure the ground stack to prevent it from tipping.
• Do not stack more than the designated maximum number of speaker cabinets.
• Use the adjustable feet only to level the system. Make sure the base does not incline in
any direction.
• Use the C-M20 sub adapter to prevent slippage.
• Improper use
Improper use of rigging frames and incorrect handling of this load-carrying equipment can
pose a serious danger.
Never
• lift loads with a center of gravity that is not directly below, perpendicular to, and in line
with the pickup point, or exert diagonal force on suspended loads
• use lifting equipment to forcibly dislodge stuck or immovable loads
• step on any part of the system
• carry, lift or secure people with parts of the system
• climb up the system
• strike, knock or dent the rigging frame or other parts of the system
• remain below the system or in the danger zone when it is moved, raised or lowered
• perform repairs on parts of the system other than those expressly permitted by the
manufacturer
• exceed the system's and any other constituent components' working load limits
• operate the system in or with an unauthorized configuration, curvature or tilt angle
• use the rigging frame to suspend non-system speaker cabinets or other loads
• install the system with improperly or incompletely connected components
• use damaged components
• install the system to unstable structures or structures with insufficient load-bearing
capacity
• install or operate the system at excess wind speeds or temperatures, or in the event of
thunderstorms
• expose components to harmful substances such as acids and alkalis
• operate the system in areas with a potentially hazardous explosive atmosphere
• transport or store the system so as to expose it to heat, moisture, excessive mechanical
stress, or other destructive forces
• modify the system or its components without the manufacturer's express consent
Serious dangers associated with improper use include:
• severe-to-fatal injuries caused by one or all components of the system falling or tipping
• severe-to-fatal injuries when people are crushed between the system and surrounding
objects
• severe-to-fatal injuries when people fall
• severe-to-fatal injuries caused by lightning during thunderstorms
• injuries when limbs are caught between parts of the system
• injuries caused by the sharp edges of a damaged system
• injuries caused by colliding with or being struck by parts of the system
Always keep the area below the system clear of people, unless all of the following
conditions are met:
Supporting structures, hoisting equipment, hoisting accessories, fasteners, and all other
components used with the system must be suitable for overhead operation.
All components that are part of and used with the system must be in safe operating
condition and have been inspected and verified by qualified personnel.
Do not move the system over people. Operate the system overhead people only when it
is stationary.
Do not use the CRF-PB pull-back frame as a load-bearing device.
• Inspection and maintenance
HEADS UP! Upon installation, inspect the flown array consisting of rigging hardware
and speakers to make sure it is securely attached. The operator of stationary or mobile
speaker systems is obliged to regularly inspect or have a qualified party regularly inspect
all components in compliance with the applicable local laws, regulations, and engineering
rules, and to have any damage repaired immediately. We strongly advise keeping log
books or the like to document all inspections.
Be sure to take into account structures and surfaces' stability and working load limit
when deploying speakers outdoors permanently or for longer periods – in particular, the
effects of wind and temperature and the added load of snow and ice.
The operator is to carry out a risk assessment for the given application. Be sure to
also assess the components and personnel's suitability, taking into account the given
operating conditions and interactions with the working environment.
The operator is to arrange for the following inspections:
• Prior to the first use and regularly thereafter, a qualified/competent person is to inspect
the rigging hardware's individual parts and the components to be deployed to make sure
they are in safe operating condition.
• In the event of a fall, overloaded system components, or other unusual incidents that
inflict damage, the operator is to arrange for a qualified person to perform an ad hoc
inspection of the affected components.
Heed the applicable local laws, regulations, and engineering rules as to the type, timing
and scope of inspections, taking into account the given operating conditions.
The following criteria are to be included in the scope of inspections conducted prior to the
first use, at regular intervals, and after unusual incidents that inflict damage:
Condition, damage, cracks, deformation, corrosion, function, operability, wear, detachable
connectors' fastening and securing action, the effectiveness of locks and stops, the
completeness of connecting elements, the legibility of the type label and working load
limit.
The interval between regular inspections is not to exceed one year. Be sure to document
inspections.
Also have a competent person inspect rigging hardware components for visible damage,
wear, proper function and the legibility of markings, and visually confirm their operating
reliability prior to each use.
If the inspector finds defects that impair safety or markings that are no longer clearly
legible, take this equipment out of circulation and do not use it again until it has been
properly repaired.
Qualified personnel is to inspect hoists, lifting accessories, fasteners and other
components used in connection with the rigging hardware in compliance with local
regulations and the given manufacturer's specifications. This inspection is to be carried
out at least once a year by qualified persons, and by competent persons prior to each
installation.
Do not expose components to mechanical stress, moisture and heat during transport and
storage.
Use only approved substances for cleaning as set out in section 3, Intended Use. Protect
components against harmful substances such as acids and alkalis.
The system's components are to be repaired by the manufacturer or by a specialized
company authorized by the manufacturer to do so.
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Rigging Manual 1.0
• Disassembly
The array may be brought into a state of unstable equilibrium during disassembly. For this
reason, relieve the tension on load-bearing equipment and lower hoisting equipment only
to the extent necessary to remove one component at a time.
When releasing tensioning straps that curve an array, keep people out of the array's
potential range of motion until the fastener is fully released.
• Hearing protection
Professional loudspeaker systems can produce harmful volume levels. Even prolonged
exposure to seemingly harmless levels starting at about 95 dBA SPL can cause permanent
hearing loss. We recommend that everyone who is exposed to high volume levels produced
by loudspeaker systems wears professional hearing protection (earplugs or earmuffs).
Manufacturer: Stamer Musikanlagen GmbH, Magdeburger Str. 8, 66606 St. Wendel,
Germany