Brentwood, NY 631-231-4500 Call Us Email Us


Model WMG Watertight Gear Reduced Hoist Operator

PowerMaster Model WMG operators are designed for use on sectional doors with high lift or vertical lift and rolling service doors and grilles in damp or wet environments.

  • High-starting torque TEFC motor with full overload protection
  • Solid state circuitry with power and program feedback LEDs
  • Onboard open/close/stop buttons for service and adjustments
  • Auto-detect monitored photo beam for simplified installation
  • Floor level disconnect with chain hoist assembly and electrical interlock for manual operation


Cycles Per Hour##
Power Options115V, 230V, 460V
Horsepower1/2 – 5
Battery BackupNO
Travel Speed##
Shipping Weight (approx.)140lbs*

*Weight varies by horsepower of unit

WMG Line Drawing


Watertight Gear Reduced Hoist Operator

Specifications & Features

  • Available Horsepower: 1/2HP – 5HP
  • High Starting Torque TEFC Motor with Full Overload Protection
  • Solid State Circuitry with Power and Program Feedback LEDs
  • On Board Open/Close/Stop buttons for service and adjustments
  • Auto-Detect monitored photo beam for simplified installation
  • Terminals labeled and grouped by function
  • Selectable Operating modes B2, C2, D1, E2, T, TS
  • Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.
  • Mechanically Self Locking Gear Reducer (Oil Bath Type)
  • Heavy Duty #50 Roller Chain and drive sprocket Included
  • Adjustable Torque Limiting Clutch
  • Floor Level Disconnect w/Chain Hoist Assembly & Electrical Interlock (For Manual Operation)
  • Baked on, Black Powder Coat Finish
  • Shipping Weight: Approximately 140 lbs* (*Weight varies on horse power of unit)
  • Shipping Dimensions: 33″ x 17″ x 20″

Manual / Cut Sheet

Wiring Diagrams

Model Options