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| Deep-freeze door hermetically seals deep-freeze areas ![]() Unlike other high-speed spiral doors, the spiral box of the EFA-TK-100 featuring EFA-AFM is mounted on the outer, warm side of the door. This protects it against increased wear due to cold. Unlike EFA-ISO-K, contact surface heaters are employed, installed in the seal strips around the frame, the lath seals and the contact edge strip, heating the contact surfaces to the door blade, the floor and the individual laths of the door blade. High-speed doors between deep-freeze areas down to -30°C and areas at 0°C must be especially well insulated and tight. The excellent insulation of the EFA-TK-100 featuring EFA-AFM is achieved for the first time using 100 mm thick EFA-THERM laths. The laths are individually fixed to the hinge chains. Accordingly, the laths exert no force since the rollers only need to bear single laths. This ensures a long life of the motors and makes the laths individually changeable. The TLG infrared door light grid, a worldwide unique and fully self-monitoring safety system, can be integrated into the new Efaflex deep-freeze door. Even more features can be easily integrated for greater safety, such as approach area surveillance, laser scanners and an additional external light grid. write your comments about the article :: © 2012 Construction News :: home page |