1. Testing and Inspecting The contractor shall test and inspect the listed equipment on a quarterly basis. There shall be a minimum of eighty (80) calendar days and a maximum of one hundred (100) calendar days between each quarterly test and inspection. The testing shall include but not be limited to vibrations, motor winding resistance, refrigerant charge, fan RPM, refrigerant oil (acid), water condition, flue gas analysis, safety controls, combustion and draft, crank case heaters, and control systems. The inspections shall include but not be limited to potentially worn parts, failed parts, mountings, drive couplings, oil levels, rotation soot, flame composition and shape, pilot and igniter, steam leaks, water leaks, oil, and refrigerant leaks. Furnish a typed quarterly inspection report listing equipment inspected/tested and the findings as well as the number of inoperable versus operable units. 2. Preventive Maintenance The contractor shall perform preventive maintenance on all of the equipment listed on a quarterly basis. There shall be a minimum of eighty (80) calendar days and a maximum of one hundred (100) calendar days between each quarterly test/inspection. The cleaning shall include but not be limited to the coil surfaces, fan impellers and blades, electrical contacts, burner orifices, passages and nozzles, pilot and igniter, and the condenser and boiler tubes. The aligning shall include but not be limited to belt drives, drive couplings, and air fins. The calibrating shall include but not be limited to the safety controls, temperature controls, and pressure controls. The tightening shall include but not be limited to the electrical connections, mounting bolts, pipe clamps, refrigerant piping fittings, and damper sections. The adjusting shall include but not be limited to the belt tension, refrigerant charge, super heat, fan RPM, water chemical feed and feed rate, burner fuel/air ratios, gas pressure, set point of controls and limits, compressor cylinder unloaders, and damper close-off. The lubricating shall include but not be limited to motors, fan and damper bearings, valve stems, damper linkages, and fan vane linkages. The contractor shall furnish and install all filters quarterly.