Stewart Filmscreen LCD Front Projector Manuale utente
TO THE INSTALLER: BE SURE TO LEAVE THIS MANUAL WITH THE OWNER.
ABT-EM-1005
ABT-EM Trapdoor ElectriMask
Electriscreen
To the Owner
Installation Instructions
Operating the Screen
Maintenance
OWNER’S MANUAL
Printed in U.S.A.
©2002 - 2005 Stewart Filmscreen Corporation
Stewart Filmscreen reserves the right to make changes to the product specified in this document.
From time to time, this document is updated. Current versions of documentation are posted on the Stewart Filmscreen website at
www.stewartfilm.com.
Contents
To the Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Preparing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Step 1. Hanging the Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Step 2. Electrical Hook-up . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Operating the Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Adjusting the Screen Extension . . . . . . . . . . . . . . . . . . . . . . .14
Screen Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
ABT-EM Trapdoor ElectriMask Electriscreen: Owner’s Manual 1
ABT-EM Trapdoor
ElectriMask Electriscreen
OWNER’S MANUAL
Congratulations on your purchase of the finest optical viewing screen
available anywhere in the world!
Please take a moment to review this manual, it will help ensure you many
years of trouble-free service from your new Stewart Filmscreen product.
About your ABT-EM Trapdoor ElectriMask Electriscreen
Your ABT-EM ElectriMask Electriscreen offers the most technologically
advanced trapdoor roller screen in the world. The hingeless door is
powered by its own motor. Sound dampers ensure quiet operation.
The ElectriMask system is designed to integrate with the latest multi-format
video projectors, which are capable of variable sizes and aspect ratios for
viewing standard broadcast television and the wide format seen in
commercial theaters (“letterbox”). The term aspect ratio refers to the format
(width to height) in which your home cinema sources are produced.
Your screen is equipped with either a vertical masking system to achieve a
1.33:1 aspect ratio (see Figure 1) or a horizontal masking system to achieve
a 1.85:1 aspect ratio (see Figure 2).
Figure 1: Vertical masking system
Figure 2: Horizontal masking system
2Stewart Filmscreen Corporation
TO THE OWNER
1.85:1 Format Screen Converts to 1.33:1
Standard
Video NTSC
Format
1.85:1 Format
“Letterbox”
1.33:1
Standard
Video NTSC
Format
Converts to
Preparation
Specifications regarding the individual screen dimensions, weight, mounting
type, and controls are provided by the factory when the unit is ordered.
Before beginning the installation:
Check the specifications for the type of mounting and switch
control to be used.
Ensure that the mounting area and electrical connection are
prepared.
Check the size and weight of the screen to be installed so that
you can plan for the number of people required for the mounting
procedure. You need at least two people to mount the smaller
screens; more are needed for larger, heavier screens.
You will need:
Enough ladders for the personnel supporting the screen during
the mounting process
A level
Fasteners appropriate for the surface on which the screen is
being mounted (See instructions for the type of mount for
recommendations.)
A 5/32” (.4 cm) hex head or Allen wrench
ABT-EM Trapdoor ElectriMask Electriscreen: Owner’s Manual 3
PREPARING THE INSTALLATION
Before proceeding with the installation of this screen,
take time to thoroughly read and understand these
installation and operation instructions.
All electrical wiring installations must conform to local
and national codes and should be performed by
qualified service personnel.
There are no user-serviceable parts contained within
the unit.
Caution
During installation, do not place the unit on an unstable
cart, stand, table, or ladder. The unit may fall, causing injury
to a child or adult and damage to the unit.
Unpacking
1. DO NOT remove the paper hanging from the trapdoor at this
time. You should remove it only after the unit is hung, all electrical
connections have been made, and the screen is in operation.
2. When moving the unit, make sure not to torque or twist the case.
This can cause door alignment problems.
4Stewart Filmscreen Corporation
Factory Advisory
The factory advises against installing a concealed or
recessed electrical projection screen permanently. You
must be able to access the external end plates should
future service to the internal roller tube/screen assembly
system be necessary.
ABT-EM Trapdoor ElectriMask Electriscreen: Owner’s Manual 5
STEP 1. HANGING THE CASE
Professional mounting techniques should be used. Stewart Filmscreen
Corporation cannot be liable for substandard or faulty installations.
Make sure that you mount the screen so that the electrical box is on the left
side (audience left).
Installing the unit
The ABT-EM Electriscreen is ready to install into the ceiling or soffit. A false
ceiling is not intended to support the weight of an ABT-EM Electriscreen.
The screen can be bolted directly to the support structure or suspended. If
the unit is to be mounted to plaster, drywall, masonry, or other type of
surface, use an appropriate fastener.
1. Install the unit onto the support structure making sure that the
bottom of the case is flush with the finished ceiling.
2. Make sure the unit is level.
3. Make sure the case is not twisted or torqued lengthwise when
installed. (This can cause door alignment problems and
microswitch shutoff failure.)
4. Drywall or other ceiling material may be screwed directly to the
ceiling flanges on the case. Refer to Figure 3.
Support Structure
Electrical Connection
Housing
Note: Your housing may differ
based on the switches used.
Screen Mask
Flange
Main AC Wire
Trapdoor
Note: The two toggle
switches are used by the
factory only. Do not adjust.
(For proper positioning, the
left switch should be flipped
toward the unit, the right
switch should be straight up.)
Figure 3: ABT-EM Electriscreen-side view
The ABT-EM Electriscreen has two roller tubes within the screen unit—one
for the main screen and one for the mask. Each roller has its own motor
and functions independently.
6Stewart Filmscreen Corporation
The motor requires standard AC input (unless an alternate voltage has been
specified).
There are several kinds of switch controls available. Follow the installation
procedure for the type of switch control you will install.
General suggestions for wiring:
Soldering is recommended.
The use of wire nuts is acceptable.
On models not provided with armored whip, a romex connector
should be installed in the appropriate electrical KO (Knock Out).
Preparation—Removing access panel
All connections are made to the electrical box on the side of the unit
(audience left). An access panel covers the electrical connections. To
remove the access panel on the underside of the unit, remove the two hex
screws. Refer to Figure 4. Replace the access panel after the electrical
connections have been made.
STEP 2. ELECTRICAL HOOK-UP
Caution
Professional techniques should be used when making any
electrical connection. A qualified electrician should perform
these procedures.
Be sure to follow all standard safety procedures for
installing electrical devices.
Do not disassemble or alter the configuration of the motor
or the unit's electrical connections. This may cause injury to
you or damage to the product.
The electrical connection should be made only to the type
of power source indicated on the marking label.
Figure 4: ABT-EM Electriscreen-underside view
Screen
Masking Panel
Hex Screws
Access Panel
ABT-EM Trapdoor ElectriMask Electriscreen: Owner’s Manual 7
Installing the low-voltage 3-button switches (horizontal)
There are three low-voltage controls mounted on a board. Each low-voltage
control allows the use of low-voltage wire to connect to the supplied 3-
position 24V momentary wall switch. The top low-voltage box controls the
mask, the middle box controls the screen, and the bottom box, nearest the
J-boxes, controls the door. Refer to Figure 5.
Note: The board can be mounted near the screen, or by adding extra
cable, you can mount it farther away.
Preparing the connection
Before making the electrical connections, you need:
An available AC constant power source
A 4-conductor switch hook-up cable (4-conductor bell wire or
category 5 cable is typically used for long runs)
Cat 5, multi-conductor unshielded, or similar type electronic cable
can be used to connect the 3-button switch to the LVC. The
recommended wire gauge is 20 to 24 AWG. Use plenum-rated
cable when required.
Making the connection
Figure 6, on the following page, illustrates the connections.
Note: The electrical housing has a 2-gang J-box. For a top view, refer to
Figure 4.
1. Connect the 8-conductor cable to the connection harness coming
from the J-box labeled “switch input” on the screen unit.
Note: Use a longer cable to mount the low-voltage control board
further from the screen unit.
2. Connect the 4-conductor cable to the connection harness coming
from the low-voltage control board.
3. Connect the hookup cable to the 3-button switch.
4. Connect the main AC power source to the the low-voltage board.
5. Connect the main AC power source to the the J-box labeled
“main AC power connection” on the screen unit.
6. A parallel connection to an outboard audio-visual switching
network can be made at this time. (optional)
Caution
Refer to the First Time
Activation note in the
section “Operating the
Screen.”
8Stewart Filmscreen Corporation
Figure 5: Low voltage 3-button switch wiring
3-button Momentary
Switches
Screen
Door
8 Conductor Hook-up Cable - 18ga Minimum Category 5
recommended (NOT Supplied)
STOP-Yellow
COMMON-White
DOWN-Black
4 Conductor Hook-up Cable—20-24ga Recommended
Category 5 Typically Used (NOT Supplied)
STOP-Yellow
COMMON-White
UP-Red
DOWN-Black
UP-Red
NEUTRAL-White
GREEN-Ground
HOT-Black
NEUTRAL-White
GREEN-Ground
HOT-Black
Mask
Note: The cable wires can be split with extra length
added so that you can move the control units to a
location at a distance from the screen case.
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