Daktronics AF-3150-20-R,A - Manual (Page 16)

2.3 Ventilation Requirements
Reference Drawing:
Shop Drawing, AF-3150-**x**-20mm-R or A............... Drawing B-183660
Fans are mounted in the bottom of the display for ventilation. Maintain a minimum
distance of 3" (7.62cm) below the display to maintain proper airflow. Refer to
Drawing B-183660 for additional information.
If the display cabinet is completely enclosed:
• 12 square inches of unobstructed opening per module must be provided to
ensure adequate cooling.
• Allowances must be made to compensate for the percentage of material
covering the openings in the structure.
• For adequate cooling, forced ventilation may be required. If air is forced
into the enclosed cabinet, 110 cubic feet per minute must be provided per
module (12.48" x 12.48" active area).
If these requirements are not met, the Galaxy ® display warranty may be void.
2.4 Lifting the Display
The top of the larger displays is equipped with eyebolts that are used to lift the unit.
Take special care to ensure that the rated load of the eyebolts is not exceeded. Refer
to the information at the end of this section labeled Eyebolts to determine the
allowable load of the eyebolts shipped with the display.
Figure 8 below illustrates both the correct (left example) and the incorrect (right
example) method of lifting a display. Lift the display as shown on the left, with the
lifting bar. Use every lifting point provided.
Figure 8: Lifting the Display (Correct, Left; Incorrect, Right)
Do not attempt to permanently support the display by the eyebolts.
If removing the eyebolts, adequately seal the holes using 13 bolts and sealing
washers, ½ inch in size. Silicone along the threads to ensure that water does not enter
the display.
Mechanical Installation 2-2