Automatic Service Door

Made of interlocking steel flat slats No. 5F with 22 gauge. Slats are galvanized per ASTM A 653 with zinc coating.

Curtain Finish: GalvaNex Coating System to include a galvanized base coating treated with dual process rinsing agents in preparation of a chemical bonding, light gray baked-on polyester base coat and a light gray baked-on polyester finish coat. The scientific organic material composition and chemical bonding process of GalvaNex produces a superior finish against corrosion and abrasion, minimum 0.6 mils (0.015 mm) cured film thickness. GalvaNex components include a limited two year finish warranty.

Endlocks/Windlocks:

Interlocking sections are fitted with high strength endlocks on alternate slats each secured with two ¼ inch (6.35 mm) rivets. Endlocks built to maintain slat alignment and to withstand 20 PSF windload.

Bottom Bar:

Two 2 x 2 x 1/8 inches (50 x 50 x 3.2 mm) structural steel angle fitted with replaceable vinyl gasket extending into guides.

Bottom Bar Finish: Phosphate treatment followed by Light Gray backed-on polyester powder coating, minimum 2.5 mils (0.065 mm) cured film thickness.

Guides:

Fabricated with minimum 3/16 inch (4.76 mm) structural steel angles. Top of inner and outer guide angles to be flared outward to form a bellmouth for smooth entry of curtain into guides.

Top of the guides are fitted with removable stoppers to prevent over travel of curtain and bottom bar.

Guides Finish: Phosphate treatment followed by Light Gray backed-on polyester powder coating, minimum 2.5 mils (0.065 mm) cured film thickness.

Counterbalance Shaft Assembly:

Barrel: Steel pipe capable of supporting curtain load with maximum deflection of 0.03 inches per foot (0.22 mm per meter) of door width.

Spring Balance: Oil-tempered, heat-treated steel helical torsion spring assembly designed for proper balance of the door to ensure that maximum effort to operate will not exceed 25 Ibs (110N). Fitted with wheel for applying and adjusting spring torque.

Brackets:

Fabricated from minimum 3/16 inch (4.76 mm) steel plate with permanently lubricated ball bearings at rotating support points to support counterbalance shaft assembly and form end closures.

Brackets Finish: Phosphate treatment followed by Light Gray backed-on polyester powder coating, minimum 2.5 mils (0.065 mm) cured film thickness.

Hood:

Coil cover (the hood) is made of 24 gauge galvanized steel with reinforced top and bottom edges. In wider doors, steel intermediate support brackets are required with minimum ¼ inch (6.35 mm) to prevent excessive sag.

Hood Finish: GalvaNex Coating System to include a galvanized base coating treated with dual process rinsing agents in preparation of a chemical bonding, light gray baked-on polyester base coat and a light gray baked-on polyester finish coat. The scientific organic material composition and chemical bonding process of GalvaNex produces a superior finish against corrosion and abrasion, minimum 0.6 mils (0.015 mm) cured film thickness. GalvaNex components include a limited two year finish warranty.

Weatherstripping:

Bottom Bar: Replaceable and compressible vinyl gasket extending into guides. (Bottom Bar weatherstrip will be eliminated if safety rubber strip is installed).
Guides: Vinyl strip sealing against fascia side of curtain.
Hood: Neoprene baffle to impede air flow above coil.

Operation:

Cornell Operator Model MGH, SGH , high starting torque with overload protection (bracket mounted) rated 1/3, 1/2, 3/4, 1 or 2 HP, 230 Volts, (Single Phase) or 380 Volts (Three Phase), 50 Hz. Complete with totally enclosed motor and factory pre-wired motor controls, solenoid actuated brake, emergency manual chain hoist, and 3-button OPEN/CLOSE/STOP control station.

Hand Chain, and Hand Crank push-up operations are available.

• Door can be equipped with electric sensing edge device. Any contact before door fully closes shall cause door to immediately stop downward travel and reverse direction to the fully opened position. Provided with self-coiling cable connection to control circuit.
• Pass Door: A hollow metal man door and hinged frame within rolling door curtain.
• Specialty Service Doors: Matadoor, ScreenGuard, Graphics Doors, Rapid Response Doors.