Supply PowerMaster Model “GT” Drawbar Operator(s) for use
on Standard Lift Sectional Doors. Primary speed
reduction shall be by means of an industrial gear box
with bronze worm gear in an oil bath. Motor shall be
continuous duty industrial type protected from overload
by a current sensing or thermal type overload device.
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 1 enclosure integral to the operator.