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Installation (continued)

 When the ceiling mount bolt installation location is concrete



Flat washer

Spring washer

Flat washer

Ceiling board

Spring washer

*1 27 mm (1-1/16") to 30 mm (1-3/16") when two nuts

1) Drill mounting holes in reference to "Mounting hole dimensions" ( 11 page).

 Drill anchor nut or curled plug mounting holes to match the size speciﬁ ed by the manufacturer.

 Drill two holes in the ceiling board for passing the ceiling mount bolts (M10) through and one hole in the

ceiling board for pulling the indoor wiring through.

2) Attach the two ceiling mount bolts to the concrete ceiling.

 Attach the anchor nuts or curled plugs to the concrete ceiling and securely ﬁ x the two ceiling mount bolts.

 When installing anchor nuts or curled plugs, strictly adhere to the installation instructions supplied by the

manufacturer so that they will not come out or loosen, or be dislodged from the intended positions.

 If the ceiling concrete has become weak and fragile or may have degraded as a result of being old,

reinforce it with iron or wood.

3) Pull out the indoor wiring for the power supply from the ceiling.

 Pull out the indoor wiring for the power supply from the indoor wiring hole you drilled in the ceiling board.

4) Attach the ceiling mount bracket to the ceiling mount bolts.

 Pass the indoor wiring for the power supply through the indoor wiring hole of the ceiling mount bracket and

then securely ﬁ x the ceiling mount bracket to the ceiling mount bolts.

 The ends of ceiling mount bolts at the ceiling mount bracket side should protrude by approx. 5 mm (3/16")

from the hexagonal nuts.

 Make sure the distance from the surface of the ceiling mount bracket to the end of the ceiling mount bolts

is within 30 mm (1-3/16"). If the distance is too long, the projector mount bracket will not be able to be

attached.

 Be sure to use commercially available ﬂ at washers and spring washers to install the ceiling mount bracket.

Attention

 Tighten the hexagonal nuts ﬁ xing the ceiling board and ceiling mount bracket together while considering the

strength of the ceiling board material. If the ceiling board material is of low strength, the ceiling board may

be damaged if the nuts are tightened to the speciﬁ ed torque. Also take a measure such as using two nuts or

thread-locking ﬂ uid to prevent loosening of the hexagonal nuts.

14 - ENGLISH

Anchor nut or

curled plug

Hexagonal nut

Ceiling mount bolt

Hexagonal nut

Hole for indoor wiring

Indoor wiring hole (bracket side)

Ceiling mount bracket

Protrudes 20 mm (25/32") to 30 mm (1-3/16")

from the ceiling surface.

Concrete

Flat washer

Spring washer

Flat washer

Terminal

block

Spring washer

Anchor nut or

curled plug

Hexagonal nut

Ceiling mount bolt

Hexagonal nut