Perform Preventive Maintenance in accordance with manufacturer recommendations and as follows for all: Unit Type 1: HVAC (DX) Systems (RTU, Split Systems, SCA/C, DX chillers) refrigerant cooling; Unit Type 2: HVAC Hydronic Systems (AHU), water heating and cooling; Unit Type 3: Heat Pumps Unit Types 1,2 & 3 are to be serviced QUARTERLY Apprentice to perform: 1. Replace air filters. 2. Replace belts as needed. 3. Clean condensate pans thoroughly, install new treatment tablet. 4. Check for any mold and/or mildew contamination. Report findings to County’s Buildings & Grounds Superintendent or designee. Journeyman to perform: 1. Check all ductwork for loose or broken connections, repair any abnormalities found, and record work performed. 2. Check all damper motors for proper stroke, adjust as required to ensure proper operation with no binding. 3. Check all linkages, adjust as needed and replace badly worn units. 4. Clean all debris from equipment housing. 5. Clean electric heating coils, once per year, with soapy water and air dry with compressed air where applicable on RTU/AHU units during 6. Check electric current drawn by heating coils after the coils have been thoroughly cleaned and compare the ratings versus actual readings. 7. Check all equipment controls and safeties for proper operation including but not limited to thermostats, relays, line starters, control coils, freeze stats, fire stats, fan cycling switches, and highand low-pressure cutouts. 8. Tighten all electrical connections. Following are for RTU/AHU/Heat Pumps as where are applicable 9. Blow out control cabinets with compress air. 10. Check all electrical and equipment covers are in place and in good condition. Replace as require. 11. Check supply and condenser fan motors or return air booster fan motor (where applicable), lubricate as required, check bearings for noise, fan blades for clearance, etc. 12. Contractor shall inspect and maintain all dampers and motorized valves, relays, unit controls and set points, motors, damper motors, compressors air dryers, gauges and any ancillary associated equipment. 13. Check all fuses for proper sizes and overload ratings. Replace as required. 14. Check refrigerant charge, if low, find and repair leak, and recharge system. 15. Test condensate lines and pumps to ensure full function. Notate on service ticket each units’ suction and discharge pressures, amperage rating and amperage readings, ambient air temperatures, air range, temperature difference of AC outlet air vs. room temperature
