Date: 03/06/98 Page 6
Installation guidelines
R9827341
R9827342
CM 100
Fixation of upper support to the ceiling
Fixation procedure in case of a flat solid ceiling
The metallic bridge, welded in the centre of the upport support, could be helpfull in the following way:
- Attach the upper support, front of the support at the correct distance from the screen, to the ceiling with
a bolt of diameter 10mm through the hole in the metallic bridge.
- Move the support into correct position, perpendicular to the screen.
- Mark the 10 fixation holes on the ceiling.
- Remove the upper support and drill 10 holes in the ceiling in order to be able to insert bolts which garantee
a pull downward of at least 800Kg (1765 LBs).
- Attach the upper support to the ceiling with 10 bolts.
Test the fixation to the ceiling for safety and rigidity under moderate side
loads (swaying) and test to at least 800 Kg (1765 LBs) pull downward for
safety.
b. Mounting of the 4 screwed rods.
(refer to fig. 2-6)
Screw one nut on each screwed rod. Screw the four rods fully in the welded nuts on the upper support and
secure each rod by fastening nut 1 (see : fig6).
Determination of the lenght of the screwed rods
The lenght of the screwed rods is to be determined as follows (refer to fig. 6):
- the height of the lowered ceiling, if there is one.
- the position of the top side of the screen with regard to the ceiling.
For the latter, consult the installation manual of the projector. In the manual you can read the correction
value A. With this value A is it possible to calculate CD (distance between the ceiling and the top side op the
support, fixed on the projector).
CD = A + B with A = correction value (see installation manual)
with B = distance between the top of the screen and the ceiling.
Explanation of fig 6:
-
Case 1
: Lowered ceiling 2 in fig. 6 considered as
main
ceiling
Lenght of the screwed rods: [CD-H4]
-
Case 2:
there is a lowered ceiling 2.
Lenght of the screwed rods: [CD+H1-H4]
Saw the screwed rods to the necessary lenght and screw on each rod a nut 2.
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