Hardware
Each 'U45' door is supplied with galvanized steel hinges and adjustable roller carriers, 50mm nylon rollers on 11 mm diameter zinc plated shafts with inset bearings, compression track buffers, 7 x 19 galvanized lifting cables, lift handle/step plate, and internal spring loaded shoot bolts.Options: inside/outside security locking, exhaust ports, letter plates.
Sections
Manufactured from two profiled metal skins bonded to a core of high density polyurethane foam. A continuous thermal break is provided between inner and outer skins to minimize heat bridging. A sectional 'U' value better than 0.45W/m sq°C will be achieved with the benefit of sound reduction of 25dB across the 100-10,000Hz frequency range.
Finish
The standard exterior finish, is a 25 micron silicone polyester coat on galvanised steel, colour RAL 9010 (off white), but this can be replaced by any of the other long life pre-finished colour coated steels offered, or natural aluminium in an embossed finish.The internal finish on all colour coated exterior finishes is a 22 micron 'white' polyester coat on galvanised steel. On natural aluminium finish the external face is matched internally.
Tracks
The 'U45' door runs in parallel tracks each side of the opening and above the door, the 50mm tracks are manufactured from cold rolled galvanised steel, and mounted on galvanised angles for fixing to the structure. The choice of which track option to select (separate data sheet) depends on the free headroom space above the door and within the building.
Counterbalance
Is by means of a minimum of two helically wound torsion springs, which are calculated to provide at least 20,000 operating cycles, mounted on 25.4mm continuous keyed solid shaft running through steel cased roller bearings.
Seals
EPDM flexible seals, mounted in aluminium holders, are fitted to the top and bottom sections of every 'U45' door, PVC vertical side seals are attached to the mounting angles, to provide a protective strip for the door to close onto, and give an excellent weather seal at the sides. Seals are also provided between the door sections to ensure that the integrity of the thermal break between the inner and outer skins is maintained.
Size and Weight
Maximum recommended width is 7500mm, maximum recommended height is 6100mm and maximum area should not exceed 42m2. For design purposes the weight of the 'U45' door, should be calculated at 24kg/m2.
Manual Operation
By pull cord for doors up to 3.6m high. Endless chain hoist, with chain keep for doors over 3.6m high.
Electric Operation
The standard is a 0.37kW 415-440 volt 3 phase motor gearbox, direct drive unit, with integral limits and floor level manual override release. A safety interlock switch for the shoot bolt is provided and a push-button control unit with emergency stop and reset buttons.Options: 240 volt 1 phase motors, high speed motors, export voltage motors, pneumatic safe edges, photocells, safety beams, automatic controls (details upon request).
Windows
Double glazed acrylic windows are available as an option with maximum recommended spacing of one per meter width of door.Size Options — Width x Height — 600 x 300mm, 450 x 300mm, 750 x 350mm, 450 x 450mm, 600 x 200mm, 400mm dia round.
Pass Doors
For applications where personnel access has to be achieved within the doorway, an integral pass door, can be provided within the 'U45' door. An aperture size of 850mm wide x 1830mm high, complete with lever handles, Euro profile lock, and heavy-duty 100kg door closer. The maximum width door for an integral pass door is 5000mm. As an alternative, matching independent pass doors and infill panels can be supplied, for installation adjacent to the 'U45' door.
Health & Safety
U45 doors conform to current workplace Health & Safety regulations, comply with machinery directive 89/392/EEC and are C.E. plated. Certificates can be provided as will full operating and maintenance instructions.Installation and MaintenanceA full installation service is available throughout the UK with experienced teams of engineers; comprehensive after-sales contract maintenance ensures that any door can be kept in the best working conditions.
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