Specifications include, but are not limited to: New Hanover County Facilities Management seeks a qualified HVAC maintenance company to provide preventative maintenance services to various equipment located at various County facilities.; Equipment: Chiller: • Perform manufacturer maintenance routine on chillers twice a year, each fiscal year. The first service shall be performed September – November, and the second service March – April.; Unitary Equipment: The following services shall be performed twice per year, each fiscal year. The first service shall be performed September – November, and the second service March – April.; • Check for proper rotation on all zone dampers.; • Clean the condenser coil two times per year. Clean the evaporate coil once per year.; • Replace the contactors on units over 10 tons on each compressor during one service and inspect and change as needed during other service. If they are questionable contact NHC HVAC/Plumbing Supervisor for direction.; • Take voltage/amp readings on all compressor(s). Record pressures and make note of any conditions that look out of range and report them to NHC HVAC/Plumbing Supervisor.; • Clean drains on each unit serviced. Re-piping or replacing components of the condensate line may be needed. Check and advise NHC HVAC/Plumbing Supervisor on any drain problems concerning the HVAC systems. All units above ceiling and above the first-floor level need to have some type of overflow protection on the drain line/drain pan, if they do not, please report to NHC HVAC/Plumbing Supervisor.; AHU’s: Costs shall be prorated for year one, to provide 3 services; one during each of the following time frames: September – November, January – March and May-June. Services for year two and three shall occur four times; one during each of the following time frames: June – August, September – October, November – January, and March - May.; • All contactors are to be visually inspected and changed as needed.; • All motors must be checked for proper voltage/amps and belt tension. Apply needed lubrication.; • All coils should be evaluated and discussed with the NHC HVAC/Plumbing Supervisor for direction on cleaning, if needed.; • All chill water/reheat valves should be stroked for visual inspection and all zone dampers as well. All electrical resistance heat is to be energized and checked for proper operation (voltage/amps) with a visual inspection on all contactors.; Gas Systems: • Perform maintenance routine on gas systems in accordance with manufacturer’s recommendation twice per year, each fiscal year. The first service shall be performed September – November, and the second service March – April.
