LiftMaster GH GT- Logic 4 Installation Manual - Page 5

TROLLEY OPERATOR SPECIFICATIONS MECHANICAL DRIVE REDUCTION: Model APT and T Primary: Heavy duty (5L) V-Belt Secondary: #41 chain/sprocket; Output: #48 chain (1/3 and 1/2 HP Model T and APT) or #41 chain (3/4 and 1 HP Model T ONLY) Model GT Primary: 20:1 Heavy duty worm gear-in-oil-bath speed reducer Output: #41 chain OUTPUT SHAFT SPEED: Model APT 96 RPM Model GT 113.5 RPM Model T 140 RPM DOOR SPEED (not adjustable): Model APT 6-7" per second Model GT 11-12" per second Model T 11-12" per second BRAKE: Solenoid actuated disc brake on 3/4 and 1 HP, standard on Model GT (Available as an option for 1/3 and 1/2 HP) BEARINGS Output Shaft: Shielded ball bearing Model APT and T. . . .Clutch Shaft: IronCopper sintered and oil impregnated MAXIMUM DOOR AREA (SQ. FT.) STANDARD SECTIONAL MODEL T --- Fiberglass Doors 24 ga. 22 ga. Steel Alum. Doors --- --- 1/3 HP 310 285 1/2 HP 400 350 3/4 HP 560 500 1 HP 640 625 20 ga. Steel Wood Doors 24 ga. Steel Insul. 260 320 450 560 16 ga. Steel --- 20 ga. Steel Insul. 175 250 325 400 --- --- 16 ga. Steel Insul. 125 200 275 310 STANDARD SECTIONAL MODEL APT 24 ga. 22 ga. Steel Alum. Doors Fiberglass Doors 1/2 HP 250 20 ga. Steel Wood Doors 24 ga. Steel Insul. 225 16 ga. Steel --- 20 ga. Steel Insul. 150 --- --- 16 ga. Steel Insul. 100 STANDARD SECTIONAL MODEL GT --- Fiberglass Doors 24 ga. 22 ga. Steel Alum. Doors --- --- 1/2 HP 400 350 3/4 HP 560 500 1 HP 625 575 1-1/2 HP --- 625 20 ga. Steel Wood Doors 24 ga. Steel Insul. 320 450 500 550 16 ga. Steel --- 20 ga. Steel Insul. 250 325 400 475 --- --- 16 ga. Steel Insul. 200 250 300 380 5 Operator specifications/Maximum door area - Trolley