User manual DA-LITE POLACOAT IN-WALL REAR PROJECTION SCREENS

[. . . ] All crates should be opened and screens inspected for concealed damage within five days of receipt. Failure to do so will render insurance null and void. Open crate on the uncoated panel side first. [. . . ] Keep screens in shipping crates until used. Store in dry area between 40°F and 100°F. SCREEN ORIENTATION Polacoat® In-Wall rigid rear projection screens have a polished surface and a matte, coated surface. The polished surface should always be installed so that it faces the projector and the matte surface should therefore always face the audience. If screen has anti-glare coating, the anti-glare surface should always face the projector. UNFRAMED GLASS SCREENS Glass screens should be mounted according to standard glazing practices for indoor installation only by those possessing proper knowledge and tools. Use suction cups only on the polished side. CLEARANCE AND BITE Recommended clearance and bite are listed in Figure 1 and vary with the thickness of the glass. These recommendations should be strictly adhered to in design and glazing. Inadequate edge clearance can result in glass-to-metal contact which will damage the glass. 1 SETTING BLOCKS Glass screens larger than 2' x 3' or thicker than 1/8" (3mm) should be set on neoprene, EPDM, elastometer or lead setting blocks placed every foot starting 6" from the edge. When this is impractical, setting blocks should always be spaced equal distance from the center of the glass. The length of each setting block should be 0. 1" for each square foot (27mm per square meter) of glass area but never less than 4" (100mm) in length. The setting blocks should be 1/16" (1. 6mm) less than full channel width and high enough to provide the recommended nominal bite and minimum edge clearance for the glass. This is to ensure that the glass will be supported under its entire width and will reduce the risk of misalignment of the setting blocks during installation, either of which will cause point pressures and could result in glass breakage. FACE SHIMS Intermittent face shims are not recommended. Face clearances should be provided by a continuous neoprene gasket or spacer to limit point pressures on the glass edge which could develop under loading. FIG. 1 GLASS PANELS MOUNTING AND FRAME FIG. 2 SUGGESTED TOP CLAMPING FOR ACRYLIC PANELS ____ x ____ Viewing Area Overall Panel Size __ x __ "A" Glass HEADER TRIM Steel, Wood or Aluminum Frame "B" "C" NOTE: Grip may be improved with friction tape at "A". Support screen with A wedges at "B" until clamping is completed. #1 HEADER Minimum Face Clearance ("A"): 1/4 in. , 6. 4 mm Bite Dimensions ("B") Glass Thickness Min. [. . . ] Do not use abrasive cleaners or solvents. IMPORTANT NOTICE TO PURCHASER All statements, technical information and recommendations contained herein are based on tests we believe to be reliable, but the accuracy or completeness thereof cannot be guaranteed. The following is made in lieu of all warranties, express or implied. Seller's and manufacturer's only obligation shall be to replace such quantity of the product proved to be defective. [. . . ]