Stewart Audio AT 3.0 User manual

Producers of Professional Projection Screens

OWNERS MANUAL

AT 3.0

Fixed Frame Screen with Lace and Grommets

Stewart Filmscreen reserves the right to make changes to the product specified in this document.

Sizes and specifications subject to change without notice at Manufacturer’s discretion. From time to time, this

document is updated. Current versions of documentation are posted on the Stewart Filmscreen website at:

www.stewartfilmscreen.com

AT 3.0

OWNERS MANUAL

Contents

To the Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Preparing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Installation: AT Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

“This Screen Seems Too Small” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Installation: Screen with Owner-Supplied Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Screen Care and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Product Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4 Stewart Filmscreen

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 SCREEN

The AT3 screens use an AT frame with seamless tubing, heliarc welds, shock (stretch or bungee) cord, and

S-hooks to secure the screen edge through grommets. Each screen is built to individual speciﬁcation.

Note: An owner-supplied frame can also be used, but in this case the screen is not warranted.

OPTIONS

``Black masking borders absorb over-scanning and create a ﬁnished look, or screen material can wrap

around the frame and attach on the back side (wraparound).

``Frames can be flat or factory-curved to any speciﬁed radius.

``The frame can be an AT2 or AT3 (2” or 3” / 5 or 7.5 cm diameter tubing, respectively).

``Mitered corners are standard, curved corners are optional.

``Mounting options include wall mounts, aperture, eyebolts, stage-fly bolts, or T-stands.

Figure 1. Assembled screen (curved corners, no masking); audience view

Aluminum Tube (AT) frame

Shock cord

Grommet

S-hook

AT 3.0 5

PREPARING THE INSTALLATION

Before proceeding with the installation of this screen, take time to thoroughly read and understand

these installation and operation instructions.

Speciﬁcations regarding the individual screen dimensions, weight, and mounting are provided by the

factory when the unit is ordered. Before beginning the installation:

``Check the speciﬁcations.

``Clear an area at least equal to the frame dimensions. Lay out clean paper or plastic as a clean work

surface. (Screen or mask fabric will attract dust or dirt if the area is not clean.)

``Check the size and weight of the screen to be installed so that you can plan for the number of people

required to move it. You need at least four people; more may be needed for larger, heavier screens.

For larger screens, you will need special equipment to support the screen tube and to elevate personnel

to an appropriate height for attaching the screen to the frame.

You will need:

``For screens whose top is high off the ground, use a rolling scaffold, scissors-lift, or genie lift.

``For larger screens, use a crane or block-and-tackle to hoist screen tube into place and support it

during installation.

``For smaller screens, use a 4-wheel equipment dolly to support the screen tube.

``Other items include:

` Level + Measuring tape

` Tools to fasten bolts

` Cutters to cut tie-off cords

Be sure to read instructions completely before beginning. The general sequence for installation is:

``Assemble frame

``Assemble support (wall mount, stage-fly mount, or T-stand)

``Attach screen

iCAUTION

During installation, do not place the components on an unstable cart, stand, table, or ladder. The

item may fall, causing injury to a person and damage to the component.

6 Stewart Filmscreen

INSTALLATION: AT FRAME

ASSEMBLING THE FRAME

Frame members and corners are numbered to make assembly easier.

1. As you unpack the frame, check the corners and tube ends for numbering.

2. On the clean work area, lay out the tubes; if masked, the masking side should be down. Make sure to

align the corresponding numbered ends.

3. Assemble the frame components using the supplied bolts. A back brace is used for front projection

screens over 16’ / 4.8 m wide that use a T-stand or stage fly mount.

4. Proceed to the instructions for the wall mount support system, stage fly mount, or the T-stand.

Note for larger frames

On larger frames, it may be necessary to install the frame directly to the mounted position.

``Mount one frame member at a time, assuring proper placement on the wall or in the aperture.

``Begin at the bottom corner and work across to complete the bottom. Then mount the side frame

members followed by the top.

``As you proceed, check that frame members are level.

Figure 2: Frame members aligned according to numbered ends.

AT 3.0 7

INSTALLATION: AT FRAME CONTINUED

WALL MOUNT SUPPORT SYSTEM

Note: You will temporarily elevate the frame into position so that you can mark the correct position for

the wall brackets.

1. Attach wall support brackets to the assembled frame (this is temporary).

2. Establish a level horizontal line on the wall using a chalk line. The horizontal line should align with the

bottom of the frame. The line will function as a constant for verifying accuracy of frame position.

3. Gather equipment, tools, and personnel to temporarily elevate the assembled frame into position.

Be sure to precisely position the bottom frame referencing the chalk line.

4. Make sure that each frame member of the frame assembly is level and plumb. Check the diagonal

measurements to verify that the assembly is square.

5. Mark the holes for each wall support bracket.

6. Lower the frame to the floor.

7. Remove the wall support brackets from the frame. Drill the locations marked on the wall to accept

the appropriate fastener.

8. Attach the mounting brackets to the wall.

9. Curved frames use support tubes of different lengths (shorter in the center, longer at the end of the

screen). Refer to Figure 5.

10. Gather equipment and personnel to mount the frame to the wall support assembly, using support

tubes if required.

Support tube

Back brace

Wall

support

bracket

Frame

(partial)

Figure 4: Wall mount for curved screen:

Frame, back brace, support tube, wall bracketFigure 3: Wall mount for flat screen

8 Stewart Filmscreen

INSTALLATION: AT FRAME CONTINUED

STAGEFLY MOUNT

Eyebolts are attached to frame members at the factory. Gather equipment and personnel to elevate the

frame and suspend it from the eyebolts.

ASSEMBLING THE TSTAND

Follow these steps to assemble the T-stand. A back brace may be used for larger screens.

1. Insert upright support posts into screen frame brackets and tighten. Refer to Figure 6.

2. Insert T-Stand bases into upright support posts and attach with bolts. Refer to Figure 7.

3. Attach cross braces to support standing T-stand posts. Refer to Figure 8.

Figure 5: Wall mount for curved screen

Figure 6: Inserting support posts

AT 3.0 9

INSTALLATION: AT FRAME CONTINUED

ATTACHING THE SCREEN TO THE FRAMEGENERAL PROCEDURE

The general procedure for attaching AT3 screens to the frame is the same for all mounting and screen

types. Speciﬁc notes for wraparound screens and owner-supplied frames follow this section.

Attach the screen to the top left corner of the frame ﬁrst, then along the top, then the sides, then the

bottom. Read the tips and follow the sequence.

Tips for attaching the screen to the frame

Read all instructions prior to beginning. Have all tools and equipment ready.

``During packing and transit, the screen may shrink. The Stewart screen material has some elasticity,

and will stretch and spring back. The grommeted edge binding will not stretch past the manufactured

outer dimensions. After the screen is attached to the frame, some tension will be apparent at each

grommet. If you have concerns, read the section “This Screen Seems Too Small.”

``At least one person on a scaffold or lift and one person on the floor must work together to rotate

the screen cylinder to unroll the screen. You may need another person on the ground to move the

scaffold or lift.

``Handle the screen carefully. Avoid contact of the screen fabric with ﬁngernails. Grasp the screen

edge binding only.

Figure 7: Attaching T-stands Figure 8: Attaching cross braces

10 Stewart Filmscreen

``As you ﬁnish attaching each section, take a moment to pause and inspect the screen to ensure that it

is not pulling or stretching in such a way that it may tear.

``On screens that use AC tape instead of black webbing along the grommeted edges, be sure to

pull grommets on the same plane as the material. Do not rotate them as you pull or the edge of the

grommet may slice through the material and tear the screen.

Preparing the screen tie-off cords

1. Carefully lay the rolled up screen on the floor.

2. Tie off the cords to the holes in the central packing tube. You can elevate the end of the screen for

easier access, or straddle the tube on the floor. As you tie off the cords, you will need to lift and rotate

the screen.

iCAUTION

To avoid damage to the screen, use caution when handling the screen roll. Carry the roll by the

ends only. Do not place the screen roll on steps or any uneven surface as the pressure can make

permanent indentations in the screen.

INSTALLATION: AT FRAME CONTINUED

ATTACHING THE SCREEN TO THE FRAMESTEPS

Follow the steps to attach the screen to the frame.

1. If used, install the optional extension post to the bottom of the screen tubing. Set the height so that

the bottom of the screen will be in the correct position once the screen is hoisted into place. Use the

throughbolt to set the position. Refer to Figure 11.

2. For larger screens, attach the hoist or crane cable to the throughbolt in the top of the screen tube. Refer

to Figure 12. For smaller screens, the tube can be supported by a rolling dolly instead of a crane.

Figure 10: Rigger attaching tie cords to tube end on elevated screenFigure 9: Screen with tie cords

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