Motor Specification; Electrical Specifications; Mechanical Specifications; Safety Specifications - Chamberlain GT Owner's Manual

MOTOR
TYPE: .................................Continuous duty
HORSEPOWER:.................1/2, 3/4, 1 & 1-1/2 Hp
SPEED:...............................1725 RPM
VOLTAGE: ..........................115, 208-230 Single phase
CURRENT: .........................See motor nameplate
MECHANICAL
DRIVE REDUCTION:.............Primary: Heavy
duty wormgear-in-oil-bath speed reducer.
OUTPUT SHAFT SPEED:.....64 R.P.M.
DOOR SPEED: ......................1 Foot per sec.
BRAKE: .................................Solenoid actuated disc
BEARINGS: ...........................Output Shaft: Shielded
Ball Bearing.
SPECIFICATIONS
230, 380, 460, 575 Three phase
depending on door
brake.
ELECTRICAL
TRANSFORMER:.............24VAC
CONTROL STATION: ......NEMA 1 three button station.
OPEN/CLOSE/STOP W/ LED
WIRING TYPE: .................C2 (Factory Shipped)
Momentary contact to OPEN & STOP, constant pres-
sure to CLOSE, open override plus wiring for sensing
device to reverse. See pages 14 and 15 for optional
wiring types and operating modes.
LIMIT ADJUST: ................Linear driven, fully
adjustable screw type cams. Adjustable to 24 feet.
SAFETY
DISCONNECT: .............Quick disconnect door arm for
emergency manual door operation.
SAFETY PHOTO EYES: (Optional) Thru beam or retro
reflective devices used to provide non-contact safety
protection. Directly interface to Lift Master CPS-L or
CPS-LN4 Commercial Protector Systems.
SAFETY EDGE: ...........(Optional) Electric or pneumatic
sensing device attached to the bottom edge of door.
A REVERSING DEVICE IS STRONGLY RECOM-
MENDED FOR ALL COMMERCIAL OPERATOR
INSTALLATIONS. REQUIRED WHEN THE 3 BUTTON
CONTROL STATION IS OUT OF SIGHT OF DOOR
OR ANY OTHER CONTROL (AUTOMATIC OR MAN-
UAL) IS USED.
3