Model MT Economy

MEDIUM-DUTY TROLLEY OPERATOR FOR STANDARD-LIFT SECTIONAL DOORS

St. Louis Garage Door Repair Company | Mt Economy Feature Large

Standard Features

MOTOR
Powerful 1/2 HP, single-phase motor with instant reverse and internal automatic reset thermal overload. Removable without affecting limit switch settings.

EMERGENCY DISCONNECT
Spring-loaded disconnect for emergency manual operation.

OPERATOR/MOTOR CONTROL
Dependable dual relay system (NEMA 1 enclosure).

CONTROL CIRCUIT
24V NEC Class 2.

WIRING TYPE
All operators are factory preset to C2 wiring, providing momentary contact to open and stop, with constant contact to close. Momentary contact to close (B2 wiring) can be easily set. The operator is prewired to accept a sensing device, photoelectric sensors, radio controls and most types of access control equipment.

DRIVE REDUCTION
First-stage heavy-duty 4L V-belt; second and third stages #48 chain; output on trolley #48 chain.

BEARINGS
Heavy-duty oil-filled bearings.

FRICTION CLUTCH
Adjustable friction clutch helps protect against damage to the door and operator should the door meet an obstruction. Works in conjunction with the Auxiliary Reversal System.

AUXILIARY REVERSAL SYSTEM
Designed to protect the door and door operator from damage; if a closing door strikes an abstruction, the Auxiliary Reversal System will detect the slip of the clutch and reverse the door to the full-open position. This system is not a substitute for a safety sensing device such as a photo cell or reversing edge.

PUSH BUTTON STATION
3-button station, for open/close/stop functions, is standard for all operators. Controls with 1, 2 and 3 buttons are available.

EXTERNAL RADIO CONTROL TERMINAL
External terminals provide quick, convenient connections for universal radio controls.

CONSTRUCTION
NEMA 1 type electrical box, heavy-duty 11-guage steel frame with baked-on powdercoat finish, all reduction sprockets drilled and pinned to shafts.

RAIL ASSEMBLY
High-strength dual L-rail track with exclusive nylon quiet-gliding chain guides on rail spacers for quiet, smooth operation. Includes quickmount header bracket, which provides fast, swing-up installation.