Supply PowerMaster model "EMG" Industrial Duty Hoist type
operator rated for use
on Sectional Doors with High Lift or Vertical Lift and Rolling
Service Doors and Grilles in NEMA 7&9 Hazardous Locations.
Primary speed reduction shall be by means of an industrial
gear box with bronze worm gear in an oil bath. Motor shall be
of the high starting torque, continuous duty industrial type,
protected from overload by a current sensing or thermal type
overload device. Motor controller shall be a heavy duty, full
voltage, across the line, magnetic reversing contactor, that is
mechanically and electrically interlocked. Electrical
components shall be installed in a NEMA 7&9 enclosure
integral to the operator. A transformer shall be provided to
reduce control voltage to 24 VAC. Separate terminal strips
shall be provided for connection of power supply line and all
control devices. Operator shall be wired for an open/close/stop
control station.
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