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Routine maintenance: 1. Check and record various operating parameters on the dashboard or circuit board, as well as operating and reload times； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and steam pipelines to ensure they are in good condition and free from leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 500-hour maintenance: 1. Check the various operating parameters on the dashboard or computer screen, as well as the operation and return time ； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and steam pipelines to ensure they are in good condition and free from leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Replace the compressor oil filter (for new machines). 1000-hour maintenance: 1. Check all operating parameters on the control panel or circuit board, as well as the operating and load-recovery times ； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 2000-hour maintenance: 1. Record various operating parameters on the dashboard or computer board, as well as the operation and return time ； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 13. Replace the air filter, oil filter, and control line filter elements, and clean the inner and outer surfaces of the air filter housing ； 14. Inspect and repair or replace the contactor contacts, and tighten all electrical wiring terminals ； 15. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 4000-hour maintenance: 1. Record various operating parameters on the dashboard or computer board, as well as the operation and return time ； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 13. Replace the air filter, oil filter, and control line filter elements, and clean the inner and outer surfaces of the air filter housing ； 14. Inspect and repair or replace the contactor contacts, and tighten all electrical wiring terminals ； 15. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 16. Greasing of the motor – 8000-hour maintenance: 1. Various operating parameters on the dashboard or circuit board, as well as operating and reload times ； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 13. Replace the air filter, oil filter, and control line filter elements, and clean the inner and outer surfaces of the air filter housing ； 14. Inspect and repair or replace the contactor contacts, and tighten all electrical wiring terminals ； 15. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 16. Greasing the motor. 17. Replacing the oil (SULLUBE32#), the oil-air separator filter element, and the return oil filter element ； 18. Replacement kits for intake valves, minimum pressure valves, temperature control valves, pressure regulators, steam traps, vent valves, and solenoid valves ； 19. Check whether the elastic elements of the coupling are aged or cracked; replace them if necessary ； 20. Readjust the actuator values of the voltage regulator ； 21. Organize machine operation data and prepare reports on machine performance analysis and recommendations. 16000-hour maintenance: 1. Various operating parameters on the dashboard or circuit board, operating and reload times ； 2. Visually inspect the machine for any abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 13. Replace the air filter, oil filter, and control line filter elements, and clean the inner and outer surfaces of the air filter housing ； 14. Inspect and repair or replace the contactor contacts, and tighten all electrical wiring terminals ； 15. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 16. Greasing the motor. 17. Replacing the oil (SULLUBE32#), the oil-air separator filter element, and the return oil filter element ； 18. Replacement kits for intake valves, minimum pressure valves, temperature control valves, pressure regulators, steam traps, vent valves, and solenoid valves ； 19. Check whether the elastic elements of the coupling are aged or cracked; replace them if necessary ； 20. Readjust the actuator values of the voltage regulator ； 21. Organize machine operation data and prepare reports on machine performance analysis and recommendations. 24,000-hour maintenance: 1. Visually inspect the machine for any abnormal vibrations or noises ； 2. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 3. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 4. Check whether the machine’s oil return is normal ； 5. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 6. Check whether the machine’s cooling water temperature and water pressure are normal ； 7. Check the electrical wiring for signs of overheating, looseness, and aging; take action to address or replace it as necessary ； 8. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 9. Measure and record the temperature of the main engine bearings, motor bearings, oil inlet/outlet temperature of the cooler, and ambient temperature ； 10. Clean the air filter element, clean the return oil line filter and throttle orifice, and clean the drain valve ； 11. Purge the cooler (air-cooled type) and clean the machine. 12. Replace the air filter, oil filter, and control line filter elements; clean the inner and outer surfaces of the air filter housing ； 13. Inspect and repair or replace the contactor contacts, and tighten all electrical connection terminals ； 14. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 15. Lubricating the motor with grease 16. Changing the oil (SULLUBE32#), as well as the oil-gas separator filter element and the return oil filter element ； 17. Replacement kits for intake valves, minimum pressure valves, temperature control valves, pressure regulators, steam traps, vent valves, and solenoid valves ； 18. Check whether the elastic elements of the coupling are aged or cracked; replace them if necessary ； 19. Re-adjust the voltage regulator setting value ； 20. Organize machine operation data and prepare reports on machine operation analysis and recommendations. 21. Replace the bearings of the main motor and fan motor. 32,000 hours maintenance: 1. Various operating parameters on the dashboard or control panel, as well as operation and return time ； 2. Check whether the machine has abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 13. Replace the air filter, oil filter, and control line filter elements, and clean the inner and outer surfaces of the air filter housing ； 14. Inspect and repair or replace the contactor contacts, and tighten all electrical wiring terminals ； 15. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 16. Greasing the motor. 17. Replacing the oil (SULLUBE32#), the oil-air separator filter element, and the return oil filter element ； 18. Replacement kits for intake valves, minimum pressure valves, temperature control valves, pressure regulators, steam traps, vent valves, and solenoid valves ； 19. Check whether the elastic elements of the coupling are aged or cracked; replace them if necessary ； 20. Readjust the actuator values of the voltage regulator ； 21. Organize machine operation data and prepare reports on machine performance analysis and recommendations. 40,000 hours maintenance: 1. Various operating parameters on the dashboard or control panel, as well as operation and return time ； 2. Check whether the machine has abnormal vibrations or noises ； 3. Visually inspect the machine’s oil, water, and air pipelines to ensure they are in good condition and there are no leaks ； 4. Check whether the oil level in the machine is normal and whether the oil quality is acceptable ； 5. Check whether the oil return of the machine is normal ； 6. Check whether the machine’s condensate drainage is functioning properly, and whether the quality of the condensate is normal ； 7. Check whether the machine’s cooling water temperature and water pressure are normal ； 8. Check the electrical wiring for signs of overheating, looseness, and aging, and carry out repairs or replacements as necessary ； 9. The meter measures the voltage and operating current of the drive motor and fan motor, and records and calculates the power value ； 10. Measure and record the temperature of the main engine bearings, the motor bearings, the inlet and outlet oil temperatures of the cooler, as well as the ambient temperature ； 11. Clean the air filter element, clean the filter on the return oil line as well as the throttle orifice, and clean the drain valve ； 12. Purge the cooler (air-cooled type) and clean the machine. 13. Replace the air filter, oil filter, and control line filter elements, and clean the inner and outer surfaces of the air filter housing ； 14. Inspect and repair or replace the contactor contacts, and tighten all electrical wiring terminals ； 15. Check on-site whether the quality of machine oil is normal; take oil samples for analysis if necessary ； 16. Greasing the motor. 17. Replacing the oil (SULLUBE32#), the oil-air separator filter element, and the return oil filter element ； 18. Replacement kits for intake valves, minimum pressure valves, temperature control valves, pressure regulators, steam traps, vent valves, and solenoid valves ； 19. Check whether the elastic elements of the coupling are aged or cracked; replace them if necessary ； 20. Readjust the actuator values of the voltage regulator ； 21. Organize machine operation data and prepare reports on machine performance analysis and recommendations. 22. Major overhaul of the main engine