Safety Operating Procedures for Screw-Type Air Compressors

I. Pre-Startup Safety Inspection

Before starting the equipment, operators must perform a comprehensive routine inspection to ensure the equipment is in a safe and ready-to-operate condition.

• Check the oil level:Ensure that the lubricating oil level is within the normal range to prevent damage to the main unit caused by insufficient oil.
• Inspect pipeline valves:Ensure that all gas supply lines and cooling water lines are securely connected, and that all valves are in the correct open or closed position.
• Clean up the surrounding environment:Remove flammable and explosive materials and debris from the equipment’s surroundings, ensure adequate ventilation, and provide sufficient clearance for heat dissipation.
• Electrical Inspection:Check that the power supply voltage is within normal limits and that the grounding wire is securely connected, ensuring there are no potential electrical leakage hazards.

II. In-Operation Safety Monitoring

After the equipment is started, operators must closely monitor operating parameters and are strictly prohibited from running the equipment with faults or under overload conditions.

• Monitoring operating parameters:Record exhaust pressure, exhaust temperature, and motor current at scheduled intervals to ensure that all parameters remain within their rated ranges.
• Listening to equipment sounds:Pay close attention to the operating sounds of the host and the motor; if any abnormal vibration or sharp, unusual noise is detected, promptly investigate and identify the cause.
• Check for leaks:Inspect the piping and joints to ensure there are no leaks of air, oil, or water.
• Prohibited: Unauthorized operations are strictly forbidden.During operation, it is strictly prohibited to remove the safety guard, and it is also forbidden to perform hazardous tasks such as tightening bolts or wiping rotating components while the equipment is running.

III. Standardized Shutdown Procedures

A proper shutdown procedure can effectively protect the equipment’s critical components and extend their service life.

• Normal shutdown:Press the stop button, allow the equipment to run at no load for several minutes, and disconnect the main power supply only after the host temperature has cooled down.
• Discharge condensate:After shutdown, once the system pressure has dropped to zero, open the drain valves at the bottom of the gas storage tank and the oil–gas separator to completely drain the condensate.
• Emergency Shutdown:In the event of an emergency during operation that poses an immediate threat to personal safety or equipment, the emergency stop button shall be pressed immediately, the main power supply shall be disconnected, and the cause of the fault shall be reported and recorded.

IV. Daily Maintenance and Safety Care

Regular maintenance is the foundation for ensuring the long-term, stable operation of equipment, and the maintenance process must strictly adhere to safety regulations.

• Power Failure and Pressure Relief:Before performing any internal repairs or maintenance, the main power supply must be disconnected and a warning sign hung, and it must be confirmed that all internal system pressure has been fully relieved.
• Use qualified accessories:When replacing consumables such as filter elements and lubricating oil, use only qualified parts that meet the equipment’s technical specifications; mixing oils of different grades is strictly prohibited.
• High-Temperature Scald Protection:When the equipment has just been shut down, the oil–gas separator tank, radiator, and exhaust piping are at high temperatures; maintenance personnel must wear protective gloves to prevent burns.
• Records and Handover:Following each maintenance and servicing, a detailed equipment operation and maintenance log must be completed to ensure traceability of the equipment’s condition.