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Operator Information


Rolling Grilles / SentryGate® Grilles

Note: UL325 Standard requires covering moving components of all exposed motors mounted at or below 8 feet in height. Cornell's UL325 Compliance Recommendation

Sensing Edges Options for Cornell Products Document

Concealed Tubular Motors - provide a solution for strict dimensional limitations around the header or aesthetic requirements that lend themself to its smaller, compact design. Tube motors require less clearance than standard motor operators. Available for rolling grilles, SentryGate grilles and also counter shutters with or without integral frame.

Cycle Rating: rated for a maximum of 10 cycles per day.
Sizes: Size limits based on unit curtain configuration and operator rating. Consult Cornell.
Volts: 110, 1 phase

Cornell Tube Motor Operator Info Sheet

 

Models MG: cULus listed, industrial duty gear head operator rated for a maximum of 20 cycles per day. Totally Enclosed Non-Ventilated (TENV) motor. Factory pre-wired motor control terminals. Maintenance free, solenoid actuated brake. Motor mounted interlock available to 1/2 HP. Auxiliary manual chain hoist for emergency operation or provisions for auxiliary push-up operation. Auxiliary chain hoist safely cuts operator power when engaged: just pull to operate. Overload protection. Lubricated, heavy-duty gears. Compact operator / mounting configuration. Fully adjustable, driven linear screw type cam limit switch mechanism.

Cycle Rating: rated for a maximum of 20 cycles per day.
HP: 1/3, 1/2, and 3/4
Volts: 115, 208/230, 460 and 575.
Available for all units up to 3/4 HP rating that will routinely cycle up to 20 times per day.
Model MG Data Sheet

Model MG Installation Instructions \ Wiring Diagrams

Model SG: cULus listed, super duty gear head operator designed for continuous use. Totally Enclosed Fan Cooled (TEFC) motor. Factory pre-wired motor control terminals. Maintenance free, solenoid actuated brake. Auxiliary manual chain hoist for emergency operation provided up to 2 HP as standard. Auxiliary chain hoist automatically engages when motor is not energized: just pull to operate. Overload protection. Lubricated, heavy-duty gears. Compact operator / mounting configuration. Fully adjustable, driven linear screw type cam limit switch mechanism.

Cycle Rating: designed for continuous use.
HP: 1/2, 3/4, 1, 1 1/2, 2, 3, 5 and 7 1/2 HP operators are available.
Voltage: 115, 208/230, 460 and 575. Sizes above 3/4 HP should be 3 phase.
Recommended for all high cycle, 100,000 cycle life and 300,000 cycle life grille units operated more than 20 cycles per day.
Model SG Data Sheet

Model SG Installation Instructions \ Wiring Diagrams

Components and Accessories Available.

 

Visit LiftMaster.com for more information regarding LiftMaster® motor operators and electrical products.


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24 Elmwood Ave., Mountaintop, PA 18707 | Tel 800.233.8366 | Fax 800.526.0841 | Email cornell@cornelliron.com

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