Daktronics AF-3400-133,171,216,260 - Manual (Page 15)

2.4 Ventilation Requirements
Reference Drawing:
Shop Drawings........................................................................ Appendix A
Fans are mounted to the back sheet for ventilation. Cool air is brought in through the
bottom half of the sign and then the fans in the back exhaust hot air. Refer to
Figure 8
and the appropriate Shop Drawing for fan locations.
If the display cabinet is completely enclosed:
• 6 square inches of unobstructed
opening must exist around the bottom
and back of the display.
Figure 8: Fan on Inside of Backsheet
• 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, 10
cubic feet per minute must be
provided per module (10.64" x
10.64" active area).
If these requirements are not met, the Galaxy
® display warranty may be void.
2.5 Lifting the Display
The top of the display 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 9 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.
Do not attempt to permanently support the display by the eyebolts.
Eyebolts can be removed
from the display to
eliminate the need for
overhead clearance.
Figure 9: Lifting the Display (Correct, Left; Incorrect, Right)
Mechanical Installation
2-3