The following scope of service shall be performed MONTHLY DURING THE COOLING SEASON as necessary and applicable to keep the air conditioning system operating properly and with optimum energy efficiency: • Check for proper refrigerant charge and oil level(s) to insure optimum performance. • Check condition and settings of panel controls, operating controls, safety controls, thermometers, and gauges to insure optimum performance and reliability. • Determine level of heat exchanger tube fouling from analysis of available log reading or readings taken during Inspections. • Check proper operation of belts, pulleys, valves and purge units of listed equipment. Lubricate all moving parts, as required. • Verify proper operation of variable speed drive. • Verify proper equipment operation through analysis of available log reading or readings taken during Inspections. • NOTIFY THE CITY IN WRITING OF ANY IMPROPER EQUIPMENT OPERATION DETERMINED BY LOG READINGS.