American Dynamics SpeedDome Ultra Installation And Service Manual page 24

Procedure
Ensure that the ceiling (particularly
sheet rock) can support the dome.
Referring to Figure 2-7:
1. Cut a hole in the ceiling tile or hard ceiling.
Ceiling tile:
Remove the ceiling tile in which the top
hat housing will be installed. On the ground, scribe a
178 (±1.5) mm (7 in.) hole in the center of the tile
using template [b]. Cut out the hole.
Hard Ceiling:
Use template [b] to scribe a 178
(±1.5) mm (7 in.) hole. Cut out the hole.
2. Loosely attach side support brackets [d] to
each end of the support bracket [c] using M6
washers [f] and nuts [g].
Note: If installing the bracket in a drop tile ceiling,
skip steps 3 through 7, and go to step 8.
Steps 3 through 7 are for hard ceilings only!
3. Adjust and tighten side support brackets.
For a snug fit (to avoid vibrations that can affect
picture quality), these brackets adjust up or down to
accommodate the thickness of most hard ceilings
and ceiling tiles. To properly adjust the side support
brackets, see "Side View" in Figure 2-7.
4. Slip the entire assembly up through the hole
and center the feed-thru hole in the support
bracket over the hole in the ceiling.
5. Feed cables through the hole in the support
bracket.
6. Install the top hat housing (see "Top Hat
Housing", page 2-5).
7. Go to "Dome Setup and Attachment", page 2-
17.
INDOOR DOME INSTALLATION
Steps 8 through 17 are for ceiling tiles only!
8. Loosely attach clips [e] to the side support
brackets using washers [f] and nuts [g].
9. Center side support brackets against T-bars.
To easily center the assembly in the open space,
ensure that the V-notch in each side support bracket
is directly over the center tab insert notch in the T-
bar.
10. Tighten the clips to secure the assembly to
the T-bars.
11. Seat the modified ceiling tile in the opening.
12. Feed cables through the hole in the support
bracket.
13. Install the top hat housing (see "Top Hat
Housing", page 2-5).
14. Lift the ceiling tile adjacent to each end of
the bracket assembly and adjust and tighten
the side support brackets.
For a snug fit (to avoid vibrations that can affect
picture quality), these brackets adjust up or down to
accommodate the thickness of most ceilings and
ceiling tiles. To properly adjust the side support
brackets, see "Side View" in Figure 2-7.
15. Attach an S-hook [h] to each end of the
support bracket.
16. For each S-hook, attach one end of safety
chain [i] to the S-hook and its other end to a
strong ceiling member.
17. Go to "Dome Setup and Attachment", page
2-17.
SPEEDDOME ULTRA
2-7
KEEP CHAIN AS TAUT AS POSSIBLE!
CLOSE BOTH ENDS OF S-HOOK. DO NOT
SECURE TO A SPRINKLER OR FIRE CON-
TROL SYSTEM!