Series 790CW

When your project requires a door that can handle high windload conditions, yet is attractive, versatile, and economical, the 790CW fits the job. This rolling sheet door (790) withstands windloads to 41/61/5psf, fits openings up to 20' by 16' (6096 mm by 4877 mm), and is available in 14 standard colors. Fabricated of high strength, 26-gauge galvanized steel curtain sections, 14-gauge universal guides, and steel bottom bar angle, the 790CW is a strong and durable door. With quick-connect components, universal through-hole guide design, and unique curtain profile and stepped counterbalance rings that minimize nesting, the 790CW is designed for fast installation, smooth operation and low maintenance, too.

• Max. Standard Width - 20' (6096 mm)

• Max. Standard Height - 16' (4877 mm)

• Curtain - 26-Gauge, Roll-Formed, Galvanized Steel Sections Interlocked and Seamed to Form Full Door Height with Curtain Windlocks

• 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

• Windloading - Integrated Curtain Windlocks and Guide to Withstand Windloading to Minimum 25/37.5 psf

• Universal Guides - 14-Gauge, Roll-Formed Galvanized Steel, 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 of "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 14 Standard Colors: White, Glossy White, Country Red, Garnet Red, Royal Blue, Polar Blue, Forest Green, Desert Tan, Dark Teal, Teal, Walnut Brown, Bronze, Autumn Orange and Harvest Orange

• Electric Operator
• Chain Hoist with Reduced Drive, Non-Handed Quick-Connect Components (Standard on Some 790CW Doors, Depending Upon Size)
• Curtain Lock: Two Bolt, Double Shackle Lock or Cylinder Lock
• Jamb Extension Brackets for Steel/Wood Jambs
• Header Draft Seal

Part 1 General

1.01 Work Included
The rolling sheet door shall be 790CW 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.

Part 2 Product

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.

Curtain shall have cast steel windlocks on each edge of the curtain and shall be spaced according to door size and the application's windloading requirements. Windlocks shall interlock with the guide under windload conditions, and run smooth under normal operation.

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 14-gauge steel. Guides shall be 3" (76 mm) wide with abrasion resistant polypropylene rub strips on each edge of the guide. Through-hole universal design shall allow easy access from the front of the guide for fastener attachment to the door jamb material. The guides shall be an "universal" design for the use in concrete, wood, steel or masonry jambs and for welding to steel jamb or steel embedded in concrete/masonry door jambs. 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 vinul 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 bearing 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" (33 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
Locks 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 lock)

2.06 Operation
Operation shall be by manual push-up or by reduced drive 4:1 chain hoist. Chain hoist shall be 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 790CW Series doors shall be packaged individually in such a manner to minimize damage from shipping and handling of the door.

Part 3 Execution

3.01 Execution
The 790CW 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.