Model T
Industrial-Duty Trolley Operator
for Standard Lift Sectional Doors

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. Capacitor start on single phase. Removable without affecting limit switch settings.
• Drive Reduction:
  First stage heavy-duty 5L V-belt; second stage #41 chain; output on trolley #48 chain on 1/3 HP; #41 chain on 3/4 and 1 HP.
• Emergency Disconnect:
  Spring-loaded disconnect for emergency manual operation.
• Wiring Type:
  C2, B2, D1 and E2 wiring types are all standard and easily selectable using the Logic 2.0 Control Board (L). T and TS wiring can be activated with the use of the CPS II™ option board.  Reversing Contractor Units (M) have C2 wiring standard and B2 available by simply moving a jumper wire. All operators are pre-wired to accept a sensing edge, photoelectric control, radio controls and most types of access control equipment.
• External Radio Control Terminal:
  External terminals provide quick, convenient connections for radio controls.
• Bearings:
  Ball bearings on output shaft; heavy-duty, oil filled bushing on reduction shafts.
• Brakes:
  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.
• Friction Clutch:
  Adjustable friction clutch helps protect against major damage to door and operator should the door meet an obstruction.
• Construction:
  NEMA 1 type electrical box, heavy-duty 11-gauge steel frame with durable powder coat finish, all reduction sprockets drilled and pinned to shafts.
• Pushbutton Station:
  3-button station for OPEN/CLOSE/STOP functions is standard for all operators.  Other controls available.
• Quick-Mount Header Bracket:
  For fast, swing-up mounting.
• Rail Assembly:
  High strength dual L-rail track with exclusive nylon quiet gliding chain guides on rail spacers for quiet, smooth operation.  Includes quick-mount header bracket which provides fast, swing-up installation.

Reversing Contactor Circuit (M)
(115V, 208/230V, 460V, 575V, 24V NEC Class 2 Circuit with 40 VA transformer)
NEW industrial linear contactor provides significantly longer control runs than conventional contactors. Circuit provides easy selection between C2 and B2 wiring with the movement of a single wire.

Logic 2.0 Control Board (L)
(115V, 208/230V, 460V, 575V 24V NEC Class 2 Circuit with 40 VA transformer)
This innovative control board features:
* LifeMaster's exclusive "Maintenance Alert System" which allows the installer to set an Internal Maintenance Cycle Counter. An LED on the 3-button station will  signal when the set number of cycles is reached or when the operator requires immediate service.

• 11 LEDs to ease installation and speed trouble-shooting.

• Easy to select operator control functions (B2, C2, D1 and E2 wiring standard).

• DC control circuit to provide control line runs of over 1,000 ft.

• Simple Plug-In options

• Maximum Run Timer, STANDARD

• Delay-on-Reverse Circuit, STANDARD

• Programmable Mid-Stop, STANDARD

Clearance and Mounting Details

Click above image to enlarge

If you would like more information on LiftMaster Products, please email us or complete our "Request Information" form.