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Southern Human Services Center Smith Sinnett /2020072 <br />HVAC and Roof Renovations Orange County,North Carolina <br />Vibration and Seismic Controls for HVAC <br /> 23 05 48 - 4 <br />b.Locate isolator hangers at top of hanger rods in accordance with manufacturer's <br />instructions. <br />3.Clean debris from beneath vibration-isolated equipment that could cause short-circuiting of <br />isolation. <br />4.Use elastomeric grommets for attachments where required to prevent short-circuiting of <br />isolation. <br />5.Adjust isolators to be free of isolation short circuits during normal operation. <br />6.Do not overtighten fasteners such that resilient material isolator pads are compressed beyond <br />manufacturer's maximum recommended deflection. <br />3.03 FIELD QUALITY CONTROL <br />A.Inspect vibration isolation and/or seismic control components for damage and defects. <br />B.Provide manufacturer representative or authorized technician services to ​assist with inspection <br />and testing​of ​vibration isolation systems​. Submit a detailed copy of manufacturer recommended <br />​inspection and field report​procedures. <br />C.Vibration Isolation Systems: <br />1.Verify isolator static deflections. <br />2.Verify vibration isolation performance during normal operation;investigate sources of <br />isolation short circuits. <br />D.Correct deficiencies and replace damaged or defective vibration isolation and/or seismic control <br />components. <br />END OF SECTION <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6