Rooftop Packaged Units and Split Systems Preventative maintenance service to be performed quarterly: • Filters changed quarterly on a minimum basis or as required. • Lock out and tag out equipment as required. • Check all electrical wiring & connections; tighten as required. • Check all motor starter contactor surfaces for wear. • Clean electrical control enclosures. • Lubricate air handling unit motor bearings and fan bearings, if applicable. • Check air handling unit belts for wear. • Check belt tension and sheave alignment. • Change belt as required. • Check all mounting hardware, tighten as needed. • Check and calibrate controls. • Check condenser coil and fan blades. • Ensure all fasteners are replaced and none left on the roof or ground. • Ensure functionality and programming of all thermostats. Preventative maintenance service to be performed annually: • Check and clean condensate drains, drain line and pan. • Inspect air handling unit fan assembly. • Lubricate condenser motors as required. • Check structural integrity of unit. • Check and calibrate controls. • Ensure all fasteners are replaced and none left on the roof or ground. Preventative maintenance service to be performed annually: • Water clean condenser coil and fan blades. Exhaust Fans Preventative Maintenance to be performed annually: • Check all electrical wiring and connections and tighten. • Check all motor starter contactor surfaces for wear.
