garage door parts--Commercial Garage Door Openers by Lift master

Sensing Edge: (recommended) Designed to sense an obstruction and signal door operator to stop or reverse as desired. An electric or pneumatic sensing device can be added to bottom edge of door. 
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CONTROL ACCESSORIES
CPS? Commercial Protector System?: (recommended) A "non-contact" photo safety sensor designed to sense an obstruction and signal the door operator to reverse to open.

Warranty: 2-year warranty.

Rail Assembly: High-strength dual L-rail track with nylon quiet-gliding chain guides on rail spacers for quiet, smooth operation.

Quick-Mount Header Bracket: For fast, swing-up mounting.

Push Button Station: 3-button station comes standard and has OPEN/CLOSE/STOP functionality.

Construction: NEMA 1 type electrical box, heavy-duty 11-gauge steel frame with durable powdercoat finish, all reduction sprockets drilled and pinned to shafts.

Friction Clutch: Adjustable, helps protect against major damage to door and operator should the door meet an obstruction.

Brake: Solenoid-actuated brake is standard on 3/4 and 1 HP units to prevent coasting of door. Optional on 1/3 and 1/2 HP units.

Bearings: Ball bearings on output shaft; heavy-duty, oil-filled bushings on reduction shafts.

External Radio Control Terminal: Quick, convenient connections for retrofitting or adding radio controls on logic or mechanical operators.

Wiring Type: B2, C2, D1 and E2 wiring types are standard and easily set using a selector dial on the Logic 3.0 Control Board (L3). T and TS wiring can be activated with use of a CPS-L or CPS-LN4. Reversing Contactor Units (M) have C2 wiring standard and B2 available by simply moving a jumper wire. Operators are pre-wired to accept a sensing edge, photoelectric sensors, radio controls and most types of access control equipment. Failsafe wiring can be selected with use of a CPS-L, CPS-LN4 or failsafe edge and CPS3 card.

Emergency Disconnect: Spring-loaded for emergency manual operation.

Drive Reduction: First-stage heavy-duty 5L V-belt; second-stage #41 chain; output on trolley #48 chain on 1/3 and 1/2 HP; #41 chain on 3/4 and 1 HP.

STANDARD FEATURES
Motor: Continuous-duty high-starting torque motor with instant reverse and overload protection.  Available in 1/3, 1/2, 3/4 and 1 HP; single- or three-phase. Removable without affecting limit switch settings.

Mechanical Reversing Contactor Circuit (M): (115V, 208/230V, 460V, 575V, 24V NEC Class 2 Circuit with 40VA transformer) Industrial linear contactor provides significantly longer control runs than conventional contactors.

CPS3 Option: Enables the addition of a second set of photo-eyes or 2- or 4-wire, self-monitoring edge.

Warning Signal: Red/green light module provides safety warning prior to close (when using timer-to-close feature).  Also supports audio warning devices and includes down mid-stop feature.

Switchless motor eliminates stuck start switch and motor malfunctions on single-phase operators
All high-voltage connections have been removed from the board for safety and ease of service
Diagnostic LEDs speed installation and troubleshooting
Motor direction jumper lets you change motor direction by simply moving a jumper
Available Plug-in Options for Logic 3.0 (L3)
Auxiliary Contact: Used to operate security, warning, heating or other 5V to 240V devices.  Features both normally open and closed contacts that actuate in conjunction with limit switches.

Built-in 3-channel, 315MHz radio receiver accepts up to 23 Security+? or unlimited DIP switch remotes. 3-button remotes can be programmed for OPEN/CLOSE/STOP operation
Maintenance Alert System establishes a routine maintenance schedule based on the number of cycles or calendar date. Includes self-diagnostic system that allows you to troubleshoot up to eight different error codes
Timer-to-Close allows programming in 5-sec or 1-min increments. Commercial or industrial photo-eyes required
Thermal motor overload can be easily reset from the 3-button floor level control station
Reliability & Programming Simplicity

LOGIC 3.O TECHNOLGOY (L3)
Added Value

Model T is an industrial-duty trolley operator for standard lift section doors. It features a low profile and industrial ball bearings on the output shaft.