4-Way ScreenWall
ElectriMask
O W N E R ’ S
M A N U A L
To the Owner
Installation Instructions
Operating the Screen
Maintenance
4WSN-1005
TO T H E I N S TA L L E R : BE S U R E TO L E AV E T H I S M A N U A L W I T H T H E O W N E R .
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4-Way ScreenWall
ElectriMask
O W N E R ’ S
M A N U A L
Contents
To the Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Preparing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 1. Mounting the Frame . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 2. Electrical Hook-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 3. Hanging the Frame on the Wall . . . . . . . . . . . . . . . . 16
Operating the Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Adjusting the Mask Extension . . . . . . . . . . . . . . . . . . . . . . . . 17
Screen Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4-Way ScreenWall ElectriMask: Owner’s Manual
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TO THE OWNER
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 4-Way ScreenWall ElectriMask
Your 4-Way ScreenWall ElectriMask is a fixed frame with both vertical and
horizontal masking panels, enabling the viewer to obtain any aspect ratio.
The term aspect ratio refers to the format (width to height) in which your
video sources are produced. The masking panels are controlled by three
separate motors, allowing maximum control and adjustability.
Figure 1: Masking systems
Vertical Masking System
1.33:1 Standard
Video NTSC
Format
HDTV Image Size
16:9/1.78:1
Converts to
Horizontal Masking System
Converts to
1.85:1 Widescreen
Format
HDTV Image Size
16:9/1.78:1
Horizontal and Vertical Masking Systems
HDTV Image Size
16:9/1.78:1
Converts to
2.35:1 Cinemascope
Format
The sizes and weights of the various 4-Way ScreenWall ElectriMask models
are listed in the charts in Figure 2.
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Figure 2: 4-Way ScreenWall ElectriMask models – sizes and weights
Variable Format (from 2.35:1 to 4.3)
Model
Number
NTSC Image Size
4:3/1.33:1
Attainable
Image Size
Weight
4WSNH100-
4WSNH110-
4WSNH123-
4WSNH135-
49” x 87”
124.5 x 221 cm
Size Table: Row 1
Size Table: Row 2
Size Table: Row 3
Size Table: Row 4
130 lbs. / 59 kg
140 lbs. / 63.5 kg
150 lbs. / 68 kg
160 lbs. / 72..5 kg
54” x 96”
137.2 x 243.8 cm
60” x 107”
152.4 x 271.8 cm
66” x 118”
167.6 x 300 cm
Size Table: Attainable Aspect Ratios
Row
Diag.
Size 4:3 /
1.33/1
Diag.
Size 1.85:1
Diag.
Size 2.35.1
1
2
3
4
82” /
49 x 65” /
99” /
47” x 87” /
95” /
37” x 87” /
208.3 cm 124.5 x 165.1 cm 251.5 cm 119.4 x 221 cm
90” / 54” x 72” / 109” / 52” x 96” /
228.6 cm 137.2 x 182.9 cm 276.9 cm 132.1 x 243.8 cm 264.2 cm 104.1 x 243.8 cm
241.3 cm 94 x 221 cm
104” / 41” x 96” /
100” /
254 cm
60” x 80” /
122” /
58” x 107” /
116” /
45.5” x 107” /
152.4 x 203.2 cm 309.9 cm 147.3 x 271.8 cm 294.6 cm 115.6 x 271.8 cm
110” /
66” x 88” / 134” / 64” x 118” / 128” / 50” x 118” /
279.4 cm 167.6 x 223.5 cm 340.4 cm 162.6 x 299.7 cm 325.1 cm 127 x 299.7 cm
Note: This manual refers to “AC” to represent electrical power. Your
location may use 120 V, 220 V or other electrical power. Screen systems
are manufactured using the electrical power type specified for the location.
Use appropriate power sources for your location.
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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.
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.
‹ Prepare the wall for electrical access to the motor(s) (audience
left).
‹ Make sure there is a clean surface on which to unroll the screen.
‹ 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.)
‹ Phillips screwdriver
‹ 5/8” (1.6 cm) hex head screwdriver or Allen wrench
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
Remove the outer plastic covering and white wrapping paper surrounding
the frame unit, if any. Do not remove the screen from the cardboard
shipping tube until instructed to do so.
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STEP 1. MOUNTING THE FRAME
Professional mounting techniques should be used. Stewart Filmscreen
Corporation cannot be liable for substandard or faulty installations.
Assembling the frame
Work in a clean area, making certain installers have clean hands and
clothes. Assemble the frame on the floor.
1. Connect the four pieces by matching the colored numbered dots
on the ends of the frame pieces. See Figure 3.
2. Secure with the supplied 1/2” (1.3 cm) Phillips pan head bolts.
Figure 3: Assembling the frame
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Positioning the frame on the wall
1. Without the screen fabric attached, position the frame on the wall.
2. Make sure the unit is level and plumb. (You may need to use
shims between the brackets and the wall to achieve vertical
plumb).
3. Mark the position of the bracket holes on the wall. See Figure 4.
Note: Later, when the screen fabric is attached to the frame (next section),
you will hang the frame on the wall.
Caution
If the unit is not mounted so that it is level and plumb,
horizontal masking panels may jam on retraction.
Wall Bracket
Wall Bracket
Figure 4: Positioning the frame
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Unpacking and unrolling the screen
The viewing side of the projection screen is rolled to the inside to protect
the optical coating. The screen is rolled lengthwise.
1. Remove the screen from the cardboard shipping tube.
2. On a clean floor, unroll screen viewing side up.
3. Allow the paper to unroll between screen back and the floor. (This
will keep the screen clean.) See Figure 5.
Caution
‹ Be careful not to touch or scratch the image surface
with fingernails.
‹ Do not use any tools to fasten the screen to the frame.
‹ Do not fold or crease the screen.
Figure 5: Unrolling the screen
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Attaching the screen to frame
1. Place the frame over the screen.
2. While lifting the frame with one hand, snap the screen into the
frame. Gently allow the screen to stretch onto the snaps. Do not
jerk the material, as it can rip. See Figure 6. Attach the snaps on
the top corners and top horizontal first, then lift the frame to a
vertical position to finish attaching the rest of the snaps.
Caution
Do not use any tools to fasten the screen to the frame.
Figure 6: Snapping screen onto frame
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Connecting the spring tension cable
1. Locate the spring tension cables on either side of the unit.
2. Connect the baby eye snap to the eyelet on the lower bottom of
the unit. See Figure 7. You will need to pull the cable slightly
(about 10 lbs. / 4.5 kg of tension).
3. Repeat for the other side.
Spring
Tension Cable
Eyelet
Baby Eye Snap
Figure 7: Connecting the spring tension cable
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STEP 2. ELECTRICAL HOOK-UP
Caution
Professional techniques need to 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.
Electrical hook-up is required for each mask roller motor. The vertical
masking systems have one roller motor at the top. Horizontal masking
systems have a roller motor at the top and one at the bottom.
A motor requires standard AC power. All connections are made to the motor
cables on the side of the unit (audience left).
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.
Horizontal Mask Connection
Vertical Mask Connection
Horizontal Mask Connection
Figure 8: Electrical connections
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Installing the high voltage switch control (standard)
A standard 3-position wall switch is supplied. The high-voltage control is
connected to the electrical source. It alternates directions of mask motion by
means of the hot lead, using the 3-position switch.
Preparing the connection
Before making the electrical connections, you need:
‹ An available AC constant power source
‹ A 4-conductor romex or motor connector cable (14 gauge
recommended)
Making the connections
Figure 9 illustrates the connections.
1. Connect the wall switch to the AC constant power source.
2. Connect the wall switch to the mask unit’s electrical cable.
3. Repeat steps 1 and 2 for each motor connection.
DOWN-Black
UP-Red
Line (Hot)
AC Power
COMMON-White Neutral
GROUND-Green
Screen Switch
Figure 9: High voltage control wiring diagram
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Installing the low-voltage 3-button switch option
The optional Stewart Filmscreen low-voltage control allows the use of low-
voltage wire to connect to the supplied 3-position momentary wall switch.
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)
‹ A 4-conductor high-voltage hook-up cable, if the control is to be
mounted at a location away from the frame
‹ 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 10 illustrates the connections.
1. Mount the low-voltage control box near the mask.
2. Connect the low-voltage control box to the mask by connecting
the mask motor power leads to the power strip terminal block
located on the circuit board of the control box.
3. Connect the low voltage control box to the AC power source by
connecting the AC line voltage to the power strip terminal block
located on the circuit board of the control box.
4. Connect the switch to the low-voltage control box.
5. A parallel connection to an outboard audio-visual switching
network can be made at this time. (optional) Use only momentary
switches for this option.
AC Power
R/F Input
Line
Neutral
COMMON-White
UP-Red
InfraRed Input
STOP-Yellow
COMMON-White
UP-Red
Low Voltage
Switching
DOWN-Black
DOWN-Black
GROUND-Green
Low Voltage Control Box
4 Conductor Hook-up Cable
20-24ga Recommended
Category 5 Typically Used
(NOT Supplied)
3-button
Momentary Switch
Figure 10: Low voltage 3-button switch wiring
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Installing the infrared remote control option
The optional Stewart Filmscreen infrared remote control allows control of
the screens from anywhere in the room.
Note: The distance between the hand-held remote control and the receiver
can be up to 50 feet / 15.2m. It is necessary to have uninterrupted line-of-
sight between the remote and the receiver.
Preparing the connection
Refer to the previous section on “Installing the low voltage 3-button switch
option.”
Making the connection
Figure 11 illustrates the connections.
1. Mount the low-voltage control box near the mask.
2. Mount the infrared (IR) eye sensor near the mask.
3. Connect the low-voltage control box to the mask by connecting
the mask motor power leads to the power strip terminal block
located on the circuit board of the control box.
4. Connect the IR eye sensor to the small black plug-in module
located next to the switch input on the circuit board.
5. Connect the low voltage control box to the AC power source by
connecting the AC line voltage to the power strip terminal block
located on the circuit board of the control box.
6. Connect the switch to the low-voltage control box.
Infrared Sensor
Infrared Remote Control
AC Power
R/F Input
Line
Neutral
InfraRed Input
COMMON-White
UP-Red
STOP-Yellow
COMMON-White
UP-Red
Low Voltage
Switching
DOWN-Black
DOWN-Black
GROUND-Green
Low Voltage Control Box
4 Conductor Hook-up
20-24ga Recommended
Category 5 Typically Used
(NOT Supplied)
3-Button
Momentary Switch
Figure 11: Infrared remote control wiring
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Installing the Multi-Channel Infrared Remote control option
The optional Stewart Filmscreen Multi-Channel Infrared Remote control
allows control of the screens from anywhere in the room.
Note: The distance between the hand-held remote control and the receiver
can be up to 50 feet / 15 m. It is necessary to have uninterrupted line-of-
sight between the remote and the receiver.
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)
‹ Wire nuts
Making the connection
Figure 12 illustrates the connections.
Note: The IR Channel Selection Switches must be set at different channels.
The factory sets them at 1 and 2.
1. Mount each Multi-Channel Infrared Control box near the screen.
2. Mount each infrared (IR) eye sensor near the screen.
3. Use wire nuts to connect the screen motor power leads to the
MCIR unit leads.
4. Connect each IR eye sensor to the plug-in module located on the
board.
5. Connect the MCIR boards to the AC power source by connecting
the AC line voltage to the black and white wires on the board.
AC Power
Optional
RF Input
Black
Common White
UP-Brown
DOWN-Red
IR Channel
Selector
Switch
IR Sensor
Connector
Optional
3-button
Switch Input
8-Button Infrared
Remote Control
Infrared
Sensor
MCIR Control Board
Figure 12: Multi-Channel Infrared Remote control wiring
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Connecting the Video Interface Control System (VICS)
Note: The VICS option should not be used for the horizontal masking
system.
The VICS enables up and down operation of the mask in conjunction with a
projector, tuner, VCR, cable box, or switched AC outlet.
Preparing the connection
Before making the electrical connections, you need:
‹ An available AC constant power source
‹ A 4-conductor cable (14ga)
Making the connection
Figure 13 illustrates the connections.
1. Use a screwdriver to open the VICS unit.
2. Feed the other end of the 4-conductor cable through the romex
connector on the VICS unit.
3. Connect wires to the terminal block. For horizontal masking
panels, connect the black motor lead to the black terminal block
and the red motor lead to the red terminal block.For vertical
masking panels, connect the red motor lead to the black terminal
block and the black motor lead to the red terminal block.
4. Secure the clamp on the romex connector.
5. Replace the cover on the VICS.
6. Plug the AC power cord of the VICS into the AC outlet.
7. Attach the 12V trigger wire to the jack in the VICS.
4-Conductor Cable (14ga Recommended)
4-pin conductors
To AC Power Source
Romex Connector
LED
Terminal Block
To 12V Trigger Wire to
Projector
Figure 13: VICS connection
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STEP 3. HANGING THE FRAME ON THE WALL
1. Attach the ScreenWall ElectriMask to the wall using the
appropriate fasteners (hex lag screws, wall anchors, molly bolts,
wood carriage screws, etc.) through the wall mounting brackets.
Figure 14: Hanging the screen
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OPERATING THE MASK
The method you use to raise and lower a mask depends on the type of
switch control device you have selected. When you lower or retract a mask,
it will stop at its preset limit.
Note: The horizontal masking panels move more slowly than the vertical
masking panels. The slower motion allows you to adjust the image area
with greater precision.
The motor is designed to be used for short operations such as positioning
the masks in preparation for viewing. The motor is not designed for
continuous duty. If the motor operates continually for more than a few
minutes, it may automatically shut off to prevent damage from overheating.
If the motor occasionally needs to be run more than normal, for example
during initial setup and positioning, allow time for the motor to cool down.
In general, when a mask is not in use, you should store it in the fully
retracted position.
Caution
Do not operate the motor when any of the following
occurs:
‹ The unit emits any smoke, heat, abnormal noise or
unusual odor.
‹ The unit is damaged in some way, such as damage
from a water leak.
If any of these situations occur, call a qualified service
person.
ADJUSTING THE MASK EXTENSION
Caution
Warning!
Improper adjustment of the limit switches can cause
irreparable damage to a mask itself, resulting in voiding the
factory warranty.
A mask is fully retracted
when the batten is
behind the panel of the
frame. Do not attempt
adjustments with a
retraction (UP) limit
switch that will further
retract a mask. Incorrect
adjustment of that
switch will cause panel
damage. Please consult
the factory if you have
any questions.
The extension and retraction limit switches have been preset at the factory.
In general, we advise you to avoid readjusting these switches.
In some cases, to enable proper alignment of the displayed image on the
screen, you may need to adjust the extension of a mask. If adjustment to
the extension is necessary, carefully follow these instructions.
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Modifying the extension of the mask
You can increase the extension of a mask up to 3" / 7.6 cm past the factory
preset stop, or you can decrease the extension from the factory preset stop.
Do not attempt to modify a mask extension beyond these recommended
amounts.
1
2
3
4
Horizontal Mask
Vertical Mask
The limit switches are located on the head of the motor and can be
accessed through openings located on the left side of the frame, as shown
in Figure 15.
Horizontal mask units have limit switches at the top and bottom of the
frame, a set for each roller tube.
Screen
Warning
The UP limit switch(es) retract the batten(s) further into the
unit. Adjusting them is not advised. Refer to 1, 3, or 6 as
appropriate in Figure 15.
To increase a mask's fully extended (mask down) stop position:
1. Lower the mask to its current stop position.
5
6
Horizontal Mask
2. Locate the down limit switch(es) located on the left side of the
frame. Refer to 2, 4, or 5 as appropriate in Figure 15. Use a
screwdriver to turn the switch in a counterclockwise direction. If
the power is on, the mask will drop incrementally as the switch is
turned.
Figure 15: DOWN limit switches
are 2, 4, and 5.
Note: One complete turn of the switch will make approximately a
1/2" / 1.3 cm change in the mask’s stop position.
To decrease the mask extension:
1. Lower and stop the panel when it is extended about halfway
down.
2. Locate the down limit switch(es) located on the left side of the
frame. Refer to 2, 4, or 5 as appropriate in Figure 15. Use a
screwdriver to turn the switch in a clockwise direction.
Note: One complete turn of the switch will make approximately a
1/2" / 1.3 cm change in the mask’s stop position.
3. Activate the mask in the down direction until it reaches the newly
reduced stop position. Repeat this procedure until the desired
stop position is reached.
Once you have made the adjustment, whenever you lower the mask, it will
automatically stop at the new position.
Note: It is recommended that you make a note of any changes made to the
factory preset.
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SCREEN CARE AND CLEANING
With reasonable care, you can expect many years of trouble-free use of
your Stewart projection screen.
We encourage you to keep your screen clean. To protect your screen when
it is not in use, store it in the fully retracted position.
Avoid getting any foreign material on the screen, as cleaning may prove
very difficult. It may not be possible to remove scratches, paint, ink, etc.
General maintenance
The surface of your screen is delicate. Special attention to these instructions
should be followed when cleaning.
‹ A draftsman-style brush may be used to lightly whisk away any
loose dirt or dust particles. (This type of brush is usually available
at office supply stores.) Stewart Filmscreen has an optional
screen cleaning kit that contains the proper type of brush.
Contact your dealer if you would like to obtain this cleaning kit.
‹ Particles left on the screen when it is retracted into the case may
form an impression on the screen surface. Periodically wipe the
back of the screen with a clean damp cloth.
‹ For tougher spots, use a solution of mild detergent and water.
Rub lightly using a sponge. Blot with a damp sponge to absorb
excess water. Residual water marks will evaporate within a few
minutes. Let the screen air dry completely before retracting.
Do not use any other cleaning materials on the screen. Contact the factory
if you have questions about removing difficult spots.
Velux covering
‹ Use a lint roller to remove particles from the Velux material.
‹ A brush can be used to comb (lift) the nap of the Velux material
to help eliminate depression marks.
Caution
Do not use chemicals or liquid to clean the fabric.
Replacement parts and service
No user-serviceable parts are contained within the unit. Contact your dealer
or the factory if you require part replacement or service.
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TROUBLESHOOTING
Refer to the following guidelines if you encounter a difficulty in the operation
of your Stewart Filmscreen. Problems related to electrical or motor function
may require a qualified service person or electrician.
Should you have a problem that is not addressed here, call the Stewart
Filmscreen Corporation.
Problem description
Probable cause
Action to take
Mask won't operate.
No AC power available.
Check to see if the circuit breaker
has switched off. Reset if needed.
Outboard switching problem.
Check outboard switching
apparatus.
Check voltage availability. Contact
an electrician.
Mask won't roll up or down (even
though power is available).
Bad connection at switch.
Have an electrician or qualified
service person check the
connection as follows:
Polarity of VICS line may be bad.
· If you have a high voltage control
switch, check switch -line
connections.
· If you have a low voltage control
unit, check switch -line
connections.
· If you have a VICS, check line
connections, or the mini -plugs at
the mask input or projector
output. Check 12V DC line for
correct polarity. Contacts may be
sticking—tap relay to free
contacts.
Mask roller chatters when power
is activated.
Can be caused by voltage drop,
bad connections, or a defective
switch.
Have an electric ian or qualified
service person check all hook -ups
including all outboard wiring.
Unit hums in up mode. ( Mask
has already retracted.)
The mask batten is retracting too
far into the case.
Failure to correct can damage
motor and screen. Do not use
the unit until this problem is
resolved.
Have a qualified service person
adjust the UP limit switch. Turn the
adjusting screw clockwise. Refer
to Figure 15. See pp. 17-18 of this
manual.
Mask drops when up direction is
activated (grinding noise occurs).
Drop in voltage.
Mask motor requires full voltage.
Have an electrician or qualified
service person check available
voltage.
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Problem description
Probable cause
Action to take
Mask continues past bottom stop
position.
White limit switch is out of
adjustment.
Readjust the DOWN limit switch.
Refer to figure 15. See pp. 17-18
of this manual.
Batten retracts too far into frame. Yellow limit switch out of
adjustment. Failure to correc t
Have a qualified se rvice person
readjust the UP limit switch. Refer
to Figure 15. See pp. 17-18 of this
manual.
can damage motor and screen.
Do not use the unit until this
problem is resolved.
Horizontal mask jams upon
retraction.
The unit was not level and plumb
when mounted.
Remount the unit making sure
that it is level and plumb.
Motor shuts off. Motor has been
in use for more than 2 minutes.
Motor is designed for short
operations (lowering and
retracting), not continuous duty.
Longer operation, such as during
Allow the motor to cool down.
Complete cooling can take an
hour or more. Heat gain is
cumulative and takes time to
setup and positioning, causes the dissipate. If motor use is initiated
motor to overheat and shut off.
before it has cooled completely,
the motor will shut down again
when it reaches maximum
temperature.
Any controller (e.g., STI, LVC,
etc.) fails to operate motor.
Dirt, finger prints, marks, etc. on
screen surface.
Improper handling of screen.
Brush off or use a mild detergent
solution with clean rag or cotton
swab.
Indentations appear on screen
surface.
Debris or particles adhering to
screen due to static cling.
Check back of screen; gently
brush debris away by hand.
PRODUCT WARRANTY
This warranty covers defects in materials and workmanship for a period of
one (1) year from the date of installation, not to exceed fifteen (15) months
from the date of shipment, provided this product is installed in a normal
environment and maintained according to written instructions in the product
Owner’s Manual. Stewart Filmscreen warrants against loss of usefulness,
discoloration or deterioration of optical quality within the warranty period as
a result of manufacturing or material defects.
A factory authorized returned screen arriving prepaid to our facility for
inspection and proved defective due to an inherent manufacturing fault will
be repaired or replaced by Stewart Filmscreen Corp. This warranty
expressly does not cover any costs of removal, installation, framing, or other
incidental costs to replacing the screen or returning it to the manufacturer.
Should you encounter a perceived product fault or problem, contact your
dealer regarding application of this warranty.
4-Way ScreenWall ElectriMask: Owner’s Manual
21
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