China atlas copco air compressor daily checklist Manufacturer, Supplier, Factory

Atlas Copco Gear Trial Run and Inspection Preliminary Inspection Manually rotate the gear shaft to feel if the rotation is smooth, and check for any sticking, abnormal noise or eccentric vibration. Check if the lubrication path in the gearbox is unobstructed, and add gear oil to the standard level as per the regulations. No-load Trial Run Connect the power supply and conduct a short-term (5-10 minutes) no-load operation. Listen for any abnormal noises (such as metal friction sounds, high-frequency squeals) from the gearbox. After stopping the machine, check the temperatures of the bearings and gears (should not exceed the ambient temperature by 40°C), and observe for any oil leakage. Load Test Gradually load to the rated pressure and run for more than 30 minutes. Recheck the noise, temperature and sealing conditions, and confirm there are no abnormalities.

Atlas Copco "Wear Kit" Replacement and Maintenance Recommendations Replacement Timing: Triggered by service manual or when pressure difference/temperature abnormalities occur; Replace along with filters and lubricating oil to reduce energy consumption and failure risks. Installation and Sealing: Tighten according to torque, replace all O-rings/ seals, avoid unfiltered air or oil bypass. Recording and Warning: Update maintenance records, activate pressure difference/ hourly/ status indicator and remote alarm to shorten downtime response.

Maintenance Key Points for Worm Wheel Type Impellers in Atlas Copco Centrifugal Air Compressors Regular Inspection: Use endoscopes or shut down for disassembly to check if there are cracks, wear, deposits, or foreign object impact marks on the impeller surface. Special attention should be paid to the blade roots (stress concentration areas). Dynamic Balance Calibration: If the impeller shows slight deformation or wear after long-term operation, it may cause dynamic balance imbalance. Re-calibration is necessary to avoid excessive vibration of the shaft system. Replacement Standard: When the impeller has irreparable cracks, severe damage to the blades, or the dynamic balance cannot be adjusted to the qualified range, it is necessary to replace the original factory impeller in time to ensure the matching and operational safety of the unit.

I. Working Principle The safety valve is designed based on the principle of force balance. It mainly consists of a valve seat, a valve core, a spring, and a regulating mechanism. When the system pressure exceeds the spring's preload force, the valve core is pushed up, and the medium (compressed air) is discharged; when the pressure drops to the return seat pressure, the spring pushes the valve core back to its original position, closing the valve. Key parameters: Opening pressure (set pressure): The pressure at which the valve begins to open, usually 1.05 to 1.1 times the working pressure. Emission pressure: The pressure when the valve reaches its maximum opening height, generally ≤ 1.1 times the opening pressure. Return seat pressure: The pressure when the valve is closed, usually 10% to 15% lower than the opening pressure. Sealing pressure: The maximum pressure at which the valve maintains sealing, generally 90% of the opening pressure.

Faults and Replacement Suggestions: Common Faults and Handling: Contact Erosion: Manifested as poor contactor engagement, severe overheating, or failure of the main circuit. Replace the contactor to prevent the motor from operating without phases; Winding Burnout: Usually caused by abnormal voltage or winding aging, resulting in the contactor unable to engage. Check the winding voltage and replace the original part; Stuck and Strange Noise: Caused by dirty iron core or failed spring. May lead to contact adhesion. Replace immediately to prevent the equipment from losing control. When replacing, please note: Power off and confirm that the main circuit voltage has been disconnected. When connecting, distinguish between the main contact (high-power circuit) and the auxiliary contact (control circuit). Secure the connection terminals to prevent loosening and overheating.

Note the installation requirements: When replacing the coupling components, follow the equipment specifications to ensure that the coaxiality and other installation parameters meet the standards, and avoid secondary damage.