The 780CD is designed for medium-duty usage environments where a high wind load-rated door is not required. It features quick and easy assembly without sacrificing stability or durability. It can be mounting directly to concrete, masonry, steel, or wood jambs.
Max. Standard Width - 16' (4877 mm)
Max. Standard Height - 16' (4877 mm)
Curtain - 26-Gauge, Roll-Formed, Galvanized Steel Sections, Interlocked and Seamed to Form Full Door Height
Curtain Material - High Strength Steel
Curtain Rub Strips - PVC on Both Front Edges
Counterbalance Assembly - 12" (305 mm) Steel "Stepped" Rings to Minimize Headroom and Enhance Door Operation
Universal Guides - 18-Gauge, Roll-Formed Galvanized Steel, with Pre-Punched Through-Hole Design for Mounting to Concrete, Masonry, Steel of Wood Jambs
Headplate - 11-Gauge Steel
Bottom Bar - Extruded Aluminum Reinforced with Steel, Roll-Formed Angle
Quick-Connect Bottom Bar Stops - 12-Gauge Galvanized Steel
Bottom Seal - Bulb-Type, Astragal Seal
Guide Rub Strips - Polypropylene on Both Edges
Standard Springs - 3 3/8" (86 mm) Torsion Springs
Operation - Manual or "Non-Handed", Reduced Drive Chain Hoist (depending on Door Size) with Quick-Connect Components
Lock - Dual Slide-Bolt Locks on Bottom Bar
Exterior/Interior Finish - Paint Finish in Choice of 11 Standard Colors: White, Glossy White, Garnet Red, Royal Blue, Polar Blue, Forest Green, Desert Tan, Dark Teal, Teal, Walnut, Brown, and Bronze
1.01 Work Included
The rolling sheet doors shall be 780CD Series as manufactured by Overhead Door Corporation.
1.02 Related Work
Opening preparation, miscellaneous or structural metal work, access panels, finish or field painting, field electrical wiring, wire, conduit, fuses and disconnect switches are in the Scope of Work of other divisions or trades.
1.03 Quality Assurance
In accordance with accepted quality assurance guidelines for motor-operated doors, the optional electric operator shall be manufactured by a single-source producer of door systems; as by Overhead Door Corporation.
2.01 Curtain
Curtain shall be roll-formed, high strength 26-gauge galvanized steel sections interlocked and seamed together to form a continuous curtain for full door height in a profile that minimizes door nesting.
A flexible PVC strip shall e on each edge of the curtain's exterior side to minimize steel-to-steel contact enhancing door operation and minimizing nesting and curtain scratching. Curtain shall be painted in one of the 14 standard colors. (Other colors available upon request.) Color warranty shall be 20 year limited warranty on all standard colors.
2.02 Guide and Headplate Assembly
Guides shall be roll-formed from 18-gauge steel. Guides shall be 3" (76 mm) wide with abrasion resistant polypropylene strips on each edge of the guide. Through-hole design shall allow easy access from the front of the guide for fastener attachment to concrete, wood, steel or masonry jambs or for welding to steel jamb or steel embedded in concrete/masonry door jambs. The guides shall be an "universal" design for the use in concrete, steel, wood or masonry. Guides shall be pre-punched to accept "quick-connect" bottom bar stops.
Headplate shall be 11-gauge steel and designed for maximum strength to support the door shaft.
2.03 Bottom Bar and Bottom Bar Stops
Bottom bar shall be of extruded aluminum reinforced with steel roll-formed angle and provided with a vinyl bulb type astragal to ensure a consistent seal along the floor.
Bottom bar stops shall be of "quick-connect" design that allow the curtain to be inserted into the "universal" guide, then locked into place with a single fastener. Bottom bar stops shall be 12-gauge galvanized steel.
2.04 Counterbalance Assembly
Counterbalance assembly shall include "stepped" designed steel rings to ensure a tight and uniform curtain wrap. Stepped, steel rings shall have a roller earing to ensure smooth door operation and enhance door life. 10,000 cycle spring(s) shall be 3 3/8" (86 mm) diameter torsion springs. Shaft shall be 1 5/16" (3 mm) diameter to minimize door deflection, enhancing door shaft life and operation. Counterbalance assembly design shall allow quick assembly of "non-handed" chain hoist on either side of door at the job site.
2.05 Lock
Lock shall be slide bolt type locks mounted on each end of the door's bottom bar assembly locking into the door guide. Locks shall be fabricated of 11-gauge steel. (Exterior curtain locks.)
2.06 Operation
Operation shall be by manual push-up or by reduced drive 4:1 chain hoist. Chain hoist shall e of "non-handed" design, to allow installation on either side of the counterbalance assembly. (Electric operation is available upon request.) (8:1 Reduced Drive Chain Hoist)
2.07 Packaging
The 780CD Series doors shall be packaged individually in such a manner to minimize damage from shipping and handling of the door.
3.01 Execution
The 780CD Series doors shall be installed in accordance with Overhead Door Corporation instructions and standards without exception.
* Note to specifiers: The specification is a suggested guide. Available options are shown in parentheses.