Stewart Filmscreen Corp Projection Television 4 Way ScreenWall ElectriMask User Manual

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 .  
 
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  
1
 
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.  
2
Stewart Filmscreen Corporation  
 
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.  
4-Way ScreenWall ElectriMask: 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.  
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.  
4
Stewart Filmscreen Corporation  
 
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  
4-Way ScreenWall ElectriMask: Owner’s Manual  
5
 
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  
6
Stewart Filmscreen Corporation  
 
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  
4-Way ScreenWall ElectriMask: Owner’s Manual  
7
 
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  
8
Stewart Filmscreen Corporation  
 
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  
4-Way ScreenWall ElectriMask: Owner’s Manual  
9
 
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  
10  
Stewart Filmscreen Corporation  
 
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  
4-Way ScreenWall ElectriMask: Owner’s Manual  
11  
 
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  
12  
Stewart Filmscreen Corporation  
 
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  
4-Way ScreenWall ElectriMask: Owner’s Manual  
13  
 
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  
14  
Stewart Filmscreen Corporation  
 
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  
4-Way ScreenWall ElectriMask: Owner’s Manual  
15  
 
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  
16  
Stewart Filmscreen Corporation  
 
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.  
4-Way ScreenWall ElectriMask: Owner’s Manual  
17  
 
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.  
18  
Stewart Filmscreen Corporation  
 
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.  
4-Way ScreenWall ElectriMask: Owner’s Manual  
19  
 
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.  
20  
Stewart Filmscreen Corporation  
 
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  
 
1-800-762-4999 Fax (310) 326-6870  
 

Snapper Lawn Aerator 1695066 User Manual
Sony Headphones MDR 310LP User Manual
Sony Portable CD Player CDX 2250 User Manual
Sony Speaker XS V1355G User Manual
Sony Stereo System CDPCE500 User Manual
Sony TV Mount MB 521 User Manual
Stamina Products Treadmill A450 255 User Manual
Sunbeam Electric Grill S T 6 5 0 1 E P B User Manual
Sunbeam Fryer 40L User Manual
SVA Flat Panel Television VR3708W User Manual