J--HVAC PREVENTIVE MAINT-NATL WEATHER SVC VERMONT

STATEMENT OF WORK 1. PURPOSE The National Weather Service (NWS) Weather Forecast Office (WFO) located in South Burlington, VT, requires preventive maintenance services for all Heating, Ventilation, and Air Conditioning (HVAC) control system and components on a quarterly basis during operating season. 2. PLACES OF PERFORMANCE The Contractor shall perform services at the following two (2) locations: SITE 1: Burlington National Weather Service, Weather Forecast Office Burlington International Airport 1200 Airport Drive South Burlington, Vermont 05403-6028 SITE 2: Vermont National Guard Base, Radar Data Acquisition (R.D.A.) Site Ethan Allen Army National Guard Facility (Camp Johnson) 789 Vermont National Guard Road Colchester, Vermont 05446-6358 3. SCOPE OF WORK The Contractor shall furnish all labor, material, equipment, and incidentals to provide preventive maintenance on HVAC equipment, controls, and components, including air handlers, electronic duct heaters, condensing units, humidifier system, heat pumps, variable air volume (VAV) boxes, dampers and louvers, exhaust fans, control system sensors, transmitters, differential pressure switches, and other components. Preventive maintenance is required to enable HVAC system function, and to mitigate system downtime and additional repair costs. Preventive maintenance services shall be performed on a quarterly basis during operating season. In addition, the Contractor shall perform Semi-Annual and Annual Preventive Maintenance Service and checks as additional tasks during the quarterly service and checks. The Contractor shall ensure all HVAC equipment is serviced and maintained including, but not limited to, the following: air handler units, electronic duct heaters, all condensing units, humidifier system, heat pumps, dampers and louvers, all exhaust fans, control system including sensors, transmitters, differential pressure switches and all other components, and package units located in the radar building and the Transmitter Power Maintenance Shelter (TPMS) building at the following locations: The Contractor will have five (5) working days to correct any/all deficiencies or the agreement is cancelled. 4. DESCRIPTION OF WORK -- 1 of 14 -- SITE 1: Burlington National Weather Service, Weather Forecast Office Checklist: Heat pumps and air conditioner condensing units routine operating inspection and quarterly maintenance Install gauges and check refrigerant pressures. Check and tighten all electrical connections. Check bearings and compressor for proper lubrication. Check compressor voltage and running amps. Check all safety/operating controls; calibrate as necessary. Check thermostats; calibrate as necessary. Check super heat temperature. Check sub cooling temperature. Check condition of condenser coils; clean twice per year. Check condition of blower wheels and drive belts; re-tension, clean and replace as necessary. Check temperature differences across the condenser and evaporator coils. Leak-test refrigerant circuits. Advise the Government Point of Contact of any deficiencies noted during the above inspections and make recommendations as to the correction of same. Checklist: Fans and Air Handling Units Quarterly Routine Operating Inspection and Maintenance, except as noted Check belts and sheaves. Tighten all nuts and bolts. Check motor mounts and vibration pads; check for excessive vibration or noise. Check motor operating conditions. Inspect electrical connections and conductors annually. Lubricate and adjust associated dampers, motors and linkage annually. Check all fan operations and clean fan blades semi-annually or as needed. Inspect condensate drain pans and piping to ensure proper drainage; clean drains and drain pans annually or as needed. Change pleated filters quarterly; change bag filters annually or sooner if necessary. Check heating and cooling coils. Clean external surfaces as required. Inspect for leaks. Check belts and supply/replace as necessary. Check fan belt tension and adjust as required. Lubricate fan and motor bearings per manufacturer's recommendation. Check and tighten locking collars and bolts. Inspect operating and safety controls. Check motor operating conditions. Check coils. -- 2 of 14 -- Check all operating conditions and adjust as required. Advise the Government Point of Contact of any deficiencies noted during the above inspections and make recommendations as to the correction of same. Checklist: Self-Contained Package Units Routine Operating Inspection and Maintenance Semi-annual, except as noted Check operating controls for proper functioning; calibrate as necessary. Check safety controls for proper operation and adjust as necessary. Inspect condition of evaporator coils. Check condition of unit air filters. Supply and change semi-annually or as needed. Inspect fan belts and supply replacements as necessary. Check fan belt tension and adjust as required. Check fan motor bearings for proper lubrication per manufacturer's recommendations. Check and tighten locking collar bolts. Inspect condensate drain pans and piping to ensure proper drainage; clean annually or as necessary. Check compressor oil pressure and level. Check compressor amperage draw with ammeter. Check compressor motor windings with meg ohm meter annually. Install pressure gauges and check refrigerant pressures. Inspect refrigerant piping and fittings for leaks. In the beginning of the heating season check operation of heating section. Advise the Government Point of Contact of any deficiencies noted during the above inspections and make recommendations as to the correction of same. Checklist: Annual Preventive Maintenance Services Check vessel connections for leaks. Check condenser and receiver relief valves for leaks. Check refrigeration systems and piping for problems. Calibrate pressure gauges and thermometers. Check safety controls for…