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2. Motor sizes shall be large enough so that the driven load will not require the motor to operate in the service <br /> factor range. <br /> 3. 2-speed motors shall have 2 separate windings on poly-phase motors. <br /> 4. Temperature Rating: Rated for 40 deg. C environment with maximum 50 deg. C temperature rise for <br /> continuous duty at full load(Class A Insulation). <br /> 5. Starting capability: frequency of starts as indicated by automatic control system, and not less than 5 evenly <br /> time spaced starts per hour for manually controlled motors. <br /> 6. Service Factor: 1.15 for poly-phase motors and 1.35 for single phase motors. <br /> 7. Motor construction: NEMA Standard MG 1,general purpose,continuous duty,Design'B",except"C"where <br /> required for high starting torque. <br /> a. Frames: NEMA Standard No.48 or 54;use driven equipment manufacturer's standards to suit specific <br /> application. <br /> b. Bearings: <br /> 1) ball or roller bearings with inner and outer shaft seals; <br /> 2) re-greasable, except permanently sealed where motor is normally inaccessible for regular <br /> maintenance; <br /> 3) designed to resist thrust loading where belt drives or other drives produce lateral or axial thrust in <br /> motor, <br /> 4) for fractional horsepower,light duty motors,sleeve type bearings are permitted. <br /> c. Enclosure Type: <br /> 1) open drip-proof motors for indoor use where satisfactorily housed or remotely located during <br /> operation; <br /> 2) guarded drip-proof motors where exposed to contact by employees or building occupants; <br /> 3) weather protected Type I for outdoor use,Type II where not housed; <br /> d. Overload protection: built-in thermal overload protection and,where indicated, internal sensing device <br /> suitable for signaling and stopping motor at starter. <br /> e. Noise rating: "Quiet" <br /> £ Nameplate: Indicate the full identification of manufacturer,ratings,characteristics, construction,special <br /> features and similar information. <br /> F <br /> 1 <br /> 15030-2 No.99132-CP2 <br />