LiftMaster T T LOGIC VERSION 1 Manual - Page 2

SPECIFICATIONS MOTOR TYPE Continuous duty HORSEPOWER 1/3, 1/2, 3/4 & 1 Hp Single or Three phase SPEED 1725 RPM VOLTAGE 115, 230 Single phase 230 Three phase CURRENT See motor nameplate ELECTRICAL TRANSFORMER 24VAC CONTROL STATION: .....NEMA 1 three button station. OPEN/CLOSE/STOP WIRING TYPE C2 (Factory Shipped) Momentary contact to OPEN & STOP, constant pressure to CLOSE, open override plus wiring for sensing device to reverse. See pages 13 and 14 for optional control settings and operating modes. LIMIT ADJUST Linear driven, fully adjustable screw type cams. Adjustable to 24 feet. MECHANICAL DRIVE REDUCTION Primary: Heavy duty (5L) V-Belt. Secondary: #41 chain/sprocket. Output: #48 chain (1/3 &1/2Hp) or #41 chain (3/4 &1Hp) OUTPUT SHAFT SPEED: .....140 R.P.M. DOOR SPEED 11" - 12" per sec. depending on door BRAKE Solenoid actuated disc brake on 3/4 & 1Hp BEARINGS Output Shaft: Shielded Ball Bearing. Clutch Shaft: IronCopper sintered and oil impregnated. SAFETY DISCONNECT Quick disconnect door arm for emergency manual door operation. REVERSING EDGE:.....(Optional) Electric or pneumatic sensing device attached to the bottom edge of door. A REVERSING EDGE IS STRONGLY RECOMMENDED FOR ALL COMMERCIAL OPERATOR INSTALLATIONS. REQUIRED WHEN THE 3 BUTTON CONTROL STATION IS OUT OF SIGHT OF DOOR OR ANY OTHER CONTROL (AUTOMATIC OR MANUAL) IS USED. WEIGHTS AND DIMENSIONS HANGING WEIGHT: .........80-110 LBS. 13-1/8" *Door Height Plus 4 feet (minimum) 4" HIGHEST POINT OF DOOR TRAVEL 10-1/2" *20-1/2" * - For Units with Brake add 3-1/2" (Standard on 3/4 & 1Hp models Optional on 1/3 & 1/2Hp) 2