Daktronics 4200 Series, Руководство по установке

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10
Display Installation
6. Attach lift lines from the crane to the lift eyes.
Note: Ensure the angle between the top of the display and the lifting strap is greater than 55°.
Refer to
Figure 3. The table below shows Daktronics recommended strap lengths for some
common display sizes.
Display Dimensions Minimum Strap Length (L)
14' x 48' 25'
10'6" x 36' 20'
14' x 28' 20'
11' x 22' 15'
7. Lift the display to apply some tension to the lift lines.
8. Tie tag lines to the provided tag line tie off on the bottom corners of the display. Refer to
Figure 3.
9. Unbolt the display from the trailer by removing the shipping braces.
Note: For displays that require a section splice, complete the steps in Section 4 before
continuing the installation process.
10. Locate the center-line label on the back of the display.
11. From the center of the display, measure and align the offset extrusion so it matches the
structure upright spacing. If a section splice is required, measure the spacing before splicing
the display because the splice plates should not be loosened or moved after the display is
spliced.
Note: Do not tighten the offset extrusion at this time as it may need to be adjusted while
attaching the display to the structure..
12. After aligning the mounting brackets and
offset extrusion, verify the DMP and the ISP
enclosure will not experience interference
during installation. If they will experience
interference issues and need to be moved,
follow the directions in
Relocating a Digital
Billboard ISP Enclosure and Controller in
Appendix A before hanging the display.
13. If the display has a vertical splice, either
from the factory or on site, locate the
horizontal splice tube at the splice location.
Refer to
Figure 3. This tube is shipped
installed and needs to be secure before
lifting the display. This tube also acts as an offset extrusion and can engage an upright. If
needed, before lifting the display, you can loosen and slide the splice tube until one of the
alternate alignment lines with the display splice. Tighten all splice tube bolts before lifting the
display.
14. Lift the display off of the truck.
15. Slowly lift the display to the structure head and guide into place with tag lines.
16. Lower the display along the uprights until it rests on the ledger brackets.
Note: The support ledger is provided by the customer prior to display installation. Refer to
Figure 2.
17. Verify the display is resting on all ledger brackets. If the display is not resting on all ledger
brackets, shim the ledger bracket until it is in contact with the display. Refer to
Figure 4.
Ledger Bracket
Bottom of Display
Figure 4: Display Resting on Ledger