Extron electronic PCM 240 User Manual 2

PCM 240 • Installation Guide

T-frame

X"

Y"

Minimum and
Maximum
Throw Distance Marks

Projector
Front

IMPORTANT SAFETY INSTRUCTIONS

Read all instructions before starting installation.

When using this accessory, basic precautions should always be followed, including the following:

WARNING: Risk of Personal Injury. Maximum setup load for the PCM is 50 lbs (22.7 kg).

SAVE THESE INSTRUCTIONS

NOTE: Refer to local building standards and codes to verify that the installation will meet the regulatory requirements.

Observe all local and national building and safety codes, UL requirements, and ADA accessibility guidelines.

WARNING: Risk of Personal Injury and property damage. Do not exceed specified weight limits of any component of

the installation. Follow the manufacturer's specifications and installation instructions.

The Extron PCM 240 Drop Ceiling Projector Mount is used for hanging
PoleVault® System AV products and various projectors.

The PCM is installed above the drop ceiling and secures the adjustable
pipe in a pass-through pipe adapter plate. The pipe then supports the
mounting of the Extron PMK 550 and UPB 25 projector bracket.

The key components of the PCM 240 are shown in figure 1.
Also included in the kit are:
4 turnbuckles, 5 lag eye bolts, 5 concrete anchors, 2 cable clamps,
1 safety wire – 15 feet, 2 tie wires – 30 feet, 4 T-frame screws, 4
adhesive pads, escutcheon ring.

1-gang and 2-gang Accessory Mounting
Points (for Power Sockets, for example)

Pipe

Adapter
Pipe Adapter Plate
Lock Nuts (4)

T-frame
Securing
Screws (4)

Base
Plate

Pre-Installation

Determine the exact location of the installation on the drop ceiling.
Consider the following:

• The vertical and horizontal offsets of the projector from the proposed

location.

• The projector dimensions relative to the image target.

Installation

Step 1 — Mark the Frame and Cut the Ceiling Tile.

a. At the location for the projector, identify the ceiling tile and T-frame

b. Remove the predetermined ceiling tile and mark the maximum and

c. Place the PCM base plate over the T-frame, between the two marks.

d. Mark the location of the PCM base plate on the T-frame to aid in

e. Measure the distances X and Y (see figure 2) from the inner vertical

NOTE: See the projector manual for details.

where the PCM will be installed.

minimum throw distances of the projector on the T-frame (see
figure 2).

TIP: Mark the screen direction on the back of the tile to

help with orientation of the tile when replacing it after
cutting�

Lightly tighten the T-frame securing screws.

replacing it in the correct location.

section of the front and left T-frame runners to the center of the
Pipe Adapter Plate.

Pipe Adapter
Set Screws (2)

Figure 1. PCM 240 Parts

Figure 2. Minimum and Maximum

Throw Distances

1

PCM 240 • Installation Guide (Continued)

f. Using these dimensions, mark and cut a hole (using a 2 inch hole saw) for

the projector pipe in the removed ceiling tile (see figure 3).

g. If required, to prepare the ceiling tile for a power outlet, use the PCM

plate to trace and cut out the 2-gang hole in the ceiling tile for a
UL approved RACO® junction box.

If this is not required, proceed to step 3.

Step 2 — Install the Electrical Box.

The following method is recommended for integrating a RACO electrical box
(not supplied) on the PCM base plate. A RACO box (#8471), an MK box, or
standard UL electrical boxes can be inserted. Mounting holes for Extron
3 inch deep, ¼ rack wide devices are also included.

Install the RACO box on the PCM plate as follows:

a. Attach the box to the plate, using the smallest notches in opposite corners

of the cut-out. Do not tighten the screws fully at this time.

b. On the room side of the tile, slide the plaster ring under the screws.

c. Fully tighten the screws

Top Side

Underside

Figure 3. Mark and start cutting on

underside. Finish on top
side.

3" Deep, ¼ Rack
Device Mounting Holes

WARNING: Risk of Personal Injury. For safety, complete all wiring

of the electrical boxes and accessories after the plate
is installed and secure.
All electrical installation should be done by a qualified
electrician.

Step 3 — Secure the PCM Base Plate to the Ceiling.

Tie wire installation

a. Replace the cut ceiling tile, checking the orientation.

b. Replace the PCM base plate over the ceiling tile and align the hole with

the PCM adapter plate.

c. Attach the four turnbuckles to the mounting plate, one at each corner.

ATTENTION: Risk of Personal Injury and property damage.

• DO NOT rest or lean on the mounting plate or
suspended ceiling when attaching the turnbuckles

and tie wire, or when drilling into the ceiling.

• For safest installation, insert the turnbuckle from
the outside so that it hooks inwards.

d. Mark and drill four holes, approximately 1¼ inch (32 mm) deep into the

ceiling joists, using a 1/4 inch (6.4 mm) diameter drill bit. Do this at 10
degrees out from vertical. Drill a fifth hole centered above the PCM for
the safety cable (see figure 5). Minimum suitable joist size should be
2 inches by 4 inches.

e. Install appropriate anchors or lag eye bolts for the structural ceiling into

each drilled hole.

Raco and MK Box Cut-out

Figure 4. RACO and MK Box

Installation Points.

Attach turnbuckles
to long sides.

Pipe Adapter Plate
Lock Nuts

T-bar Securing
Screws

T-bar

1-gang and 2-gang
Electrical Box Cut-outs

Attach ceiling

10

anchors and wire
10 degrees from
vertical.

Mounting Plate

Figure 5. Attach Tie Wire and Safety

Cable.

2