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PowerMaster MGJ Medium Duty Commercial Gear Reduced jackshaft Operator

PowerMaster MGJ Medium Duty Commercial Gear Reduced jackshaft Operator
PowerMaster MGJ Medium Duty Commercial Gear Reduced jackshaft Operator
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This item is discontinued.
Please view this replacement item:
PowerMaster GJ Gear Reduced Commercial Jackshaft Operator
This item is discontinued. Please view this replacement item:
Product Description
The PowerMaster MGJ Jackshaft Operator is designed for use on commercial and industrial rolling steel or sectional overhead doors by chain coupling to the door shaft. May also be used with rolling grilles, roll up service doors and counter shutters when a chain hoist is not required. Model MGJ is a low profile, compact unit intended for continuous medium duty cycle commercial applications that will be operated up to 10 cycles per hour.

Model MGJ standard features include a floor level disconnect, heavy duty worm gear reduction, solid state circuitry with power and program feedback on LEDs, onboard open/close/stop buttons for service and adjustments and auto-detect monitored photobeam for simplified installation. Position chain driven, rotary type limit switches are provided to limit full open and close travel of the door. The motor may be removed without affecting the limit switch adjustments. Terminal strips provided for connection of power supply line and all control devices. Constant contact to close is standard operation. Momentary contact to close can be activated by simply moving a wire on the terminal strip. All components of the control system are UL recognized. Permanent split capacitor (PSC) motor is protected from overload by a current sensing and thermal overload device. Solid state control board with power and program feedback LEDs and instant reverse wiring. Transformer included to reduce control voltage to 24VAC. Electrical components installed in a NEMA 1 enclosure. The MGJ Jackshaft Operator is a high starting torque motor with full overload protection with an adjustable torque limiting clutch. Heavy duty #41 roller chain and driven sprocket for final drive included. Can be used with foam or pneumatic reversing door edge components or photoelectric beam (across the opening).

Optional features include digital radio controls, digital timer to close and keyless entry system. Operator is available in right-hand or left-hand mountings, in either vertical or horizontal position.



STANDARD FEATURES:
  • Worm Gear Reduction
  • Solid State Circuitry with Power and Program Feedback LEDs
  • On Board Open/Close/Stop Buttons for Service and Adjustments
  • Field-adjustable, builtp-in functions
  • Floor Level Disconnect
  • Low Profile, Compact Unit
  • Auto-detect, monitored photo beam for simplified installation.
OPTIONAL EQUIPMENT:
  • Sensing edge (contact Sensor)
  • Photo Cell (non-contact sensor)
  • Control Stations & Accessories
TECHNICAL SPECIFICATIONS:
  • MOTOR: 1/2HP, 24VDC
  • POWER INPUT: 115VAC
  • OPERATOR WEIGHT: 90lbs
  • CYCLES: 10 Per Hour
  • MOUNT: Left or Right Hand Mount
MECHANICAL SPECIFICATIONS:
  • Motor is permanent split capacitor (PSC), protected from overload by a current sensing and thermal overload device. All components of the control system are UL recognized.
  • Built in Solid State Control Board with instant reverse wiring
  • Terminal strips are provided for connection of power supply line and all control devices.
  • Electrical components are installed in a NEMA 1 Rated enclosure integral to the operator.
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