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b. Bearings: The following features are required: <br /> 1. Ball or roller bearings with inner and outer shaft seals. <br /> 2. Grease lubricated. <br /> 3. Designed to resist thrust loading where belt drives or other drives produce lateral or axial <br /> thrust in motor. <br /> c. Enclosure Type: The following features are required: <br /> 1. Open drip-proof motors where satisfactorily housed or remotely located during operation. <br /> 2. Guarded drip-proof motors where exposed to contact by employees or building occupants. <br /> d. Overload Protection: Built-in,automatic reset,thermal overload protection. <br /> e. Noise Rating: Quiet. <br /> f. Efficiency: Premium-efficiency motors shall have a efficiency as scheduled in Division <br /> 15 Section 15030 Electrical Requirements for Mechanical Equipment. All motors shall have a <br /> higher efficiency than the NAP Rebate Guidelines for Motors in accordance with IEEE Standard <br /> 112,Test Method B. <br /> g. Nameplate: Indicate the full identification or manufacturer, ratings, characteristics, construction, <br /> and special features. <br /> h. Starters, Electrical Devices, Marines Lights, GUI Receptacles, and Factory Wiring: Refer to <br /> Section 15862 "Variable Speed Drives' for requirements. Provide where indicated on plans and <br /> schedule. Include factory wiring of VFW,starters,marine lights,GUI receptacles,and disconnects <br /> to an external junction box if so indicated on the plans or schedule. Other electrical devices and <br /> connections are specified in Division 16. <br /> E. Coils: <br /> 1. Testing Requirements: The following factory tests are required: <br /> a. Coil Performance Tests: Cooling and heating coils, except sprayed surface coil shall be factory <br /> tested for rating in accordance with ARI 410-Standard for Forced-circulation Air-Cooling and Air- <br /> Heating coils. <br /> 2. Coil Racks and Sections: Individual stainless steel coil racks for all cooling coils. Heating coils shall <br /> utilize galvanized steel racks. All coil racks must be designed to permit removal of the coils through a <br /> side access panel for maintenance and replacement. <br /> 3. Coils,General-Trainable,rigidly supported across the full face of the coil and pitched to allow drainage. <br /> a. Fins: Aluminum or copper,constructed from flat plate with belled collars for tubes. Fins shall be <br /> bonded to tubes by mechanically expanding copper tubes. <br /> b. Tubes: Seamless steel. <br /> C. Coil Casing: Stainless steel. <br /> d. Headers for Water Coils: Copper,steel, or cast iron with connections for drain valve and air vent <br /> and threaded piping connections. Pipes for these connections must extend through the side of the <br /> casing for easy connection by Contractor. <br /> 15854-5 No.99132-CP2 <br />