Daktronics AF-3090-89-R,A - Manual (Page 13)

Mechanical Installation
2-2
2.3 Ventilation Requirements
Reference Drawings:
Shop Drawing, AF-3090, 8x**-24 Amber/Red........................................ Drawing B-160986
Shop Drawing, AF-3090, 16x**-24 Amber/Red...................................... Drawing B-160987
Shop Drawing, AF-3090, 24x**-24 Amber/Red...................................... Drawing B-160988
Shop Drawing, AF-3090, 32x**-24 Amber/Red...................................... Drawing B-160989
Fans mounted in the backsheets toward the top of the display allow for ventilation. Maintain a
minimum distance of 3
″
(7.62 cm) below the sign to maintain proper airflow. Refer to the appropriate
shop drawing for additional information.
If the sign cabinet is completely enclosed:
• Provide 6 square inches of unobstructed opening per module to ensure adequate cooling.
• Make allowances to compensate for the percentage of material covering the openings in the
structure.
• For adequate cooling, the cabinet may require forced ventilation. If the enclosed cabinet must use
forced ventilation, it must ventilate at a rate of 10 cubic feet per minute per module (28
″
x 28
″
active area).
Failure to comply with these requirements voids the Galaxy sign warranty.
2.4 Lifting the Sign
The top of the sign has eyebolts to lift the unit. Do not exceed the rated load of the eyebolts. Refer to
the information at the end of this section labeled Eyebolts to determine the allowable load of the
eyebolts shipped with the sign.
Figure 6 illustrates both the correct (left example) and the incorrect (right example) method of lifting
a sign. Lift the sign as shown on the
left, with the lifting bar. Use every
lifting point provided!
Do not attempt to permanently
support the sign by the eyebolts.
If you remove the eyebolts,
adequately seal the holes using ½-
13 bolts and sealing washers.
Silicone along the threads to ensure water does not enter the sign.
2.5 Sign Mounting
Reference Drawings:
Shop Drawing, AF-3090, 8x**-24 Amber/Red........................................ Drawing B-160986
Shop Drawing, AF-3090, 16x**-24 Amber/Red...................................... Drawing B-160987
Shop Drawing, AF-3090, 24x**-24 Amber/Red...................................... Drawing B-160988
Shop Drawing, AF-3090, 32x**-24 Amber/Red...................................... Drawing B-160989
The method used to mount signs varies greatly from location to location. For this reason the manual
covers only general mounting topics.
Figure 6: Lifting the Sign