Key points for operating a laser cutting-specific screw air compressor

Laser-cutting screw air compressors play a crucial role in laser cutting operations, and proper operation is key to ensuring stable operation and cutting results. The following details the key points for operating a laser-cutting screw air compressor.

I. Pre-start Preparations

1. Inspect the Equipment Appearance

First, carefully inspect the appearance of the screw air compressor. Check for obvious damage or deformation of the machine body, and ensure all screws at the connection points are secure and not loose. Pay particular attention to the pipe connections; loose screws may lead to gas leaks, affecting the compressor's normal operating efficiency. Also, check for oil stains and dust accumulation on the surface of the equipment. Excessive dirt will affect the equipment's heat dissipation performance.

2. Check the Lubricating Oil

Lubricating oil is crucial for the operation of the screw air compressor. Open the oil level observation window and check if the lubricating oil level is within the normal range. The normal oil level should be between the upper and lower limit marks. If the oil level is too low, it will lead to poor lubrication of machine parts, increased wear, and even malfunctions; while if the oil level is too high, it may cause increased oil consumption and oil spraying problems. In addition, check the quality of the lubricating oil, observing its color and transparency. If the lubricating oil turns black, becomes cloudy, or has an unusual odor, it indicates that the lubricating oil has deteriorated and needs to be replaced immediately.

3. Check the cooling system. The cooling system directly affects the temperature control of the air compressor. Check whether the cooling water pipes are tightly connected and whether there are any leaks. This can be determined by observing whether there are water stains on the surface of the pipes. At the same time, check the water level in the cooling water tank to ensure that the water level is at the appropriate position. Too low a water level will affect the cooling effect, causing the air compressor temperature to be too high; too high a level may overflow during operation. In addition, check whether the cooling fan is working properly and whether the fan blades are damaged. If the fan is faulty, it will seriously affect the heat dissipation efficiency of the cooling system.

4. Check the electrical system. The electrical system is the guarantee for the normal start-up and operation of the air compressor. Check whether the power cord is connected correctly and securely, and whether the plug is damaged. Check the electrical components in the control cabinet, such as contactors and relays, for looseness or signs of burning. It is also necessary to check whether the air compressor's grounding is good. Good grounding can effectively prevent electric shock accidents and ensure the safety of operators.

II. Start-up Operation

1. Connecting the Power Supply

After completing all the pre-start checks, connect the air compressor's power switch. At this time, the indicator lights on the control panel should light up, indicating that the equipment is powered on. Observe whether the indicator lights are displaying normally. If there is any abnormality, such as an indicator light not lighting up or flashing, the cause should be investigated in time, which may be an electrical fault or a problem with related components.

2. Starting the Air Compressor

Press the start button, and the air compressor will start. During the start-up process, pay close attention to the operating status of the equipment. Listen to whether the sound of the air compressor is normal, and whether there are any abnormal friction sounds, impact sounds, etc. If you hear abnormal sounds, press the stop button immediately to stop the air compressor and check the cause of the fault. In the initial stage of start-up, the air compressor pressure will gradually rise. Observe whether the pressure rise is stable. If the pressure rises too quickly or too slowly, it may indicate a problem with the equipment.

III. Precautions During Operation

1. Monitor Pressure

During air compressor operation, constantly monitor the pressure gauge readings. Laser cutting has specific requirements for compressed air pressure; excessively high or low pressure will affect cutting quality. Maintain the pressure within the specified range. If the pressure exceeds the normal range, adjust it promptly. Pressure adjustment can be achieved by adjusting the air compressor's pressure regulating valve.

2. Monitor Temperature

Air compressors generate heat during operation, so closely monitor the equipment's temperature. Primarily monitor oil temperature and exhaust temperature. Excessively high oil temperature will degrade lubricating oil performance, affecting lubrication; excessively high exhaust temperature may degrade compressed air quality and even cause safety accidents. Generally, oil temperature should be maintained within a suitable range. When oil or exhaust temperature approaches the upper limit, check if the cooling system is functioning properly and whether it's necessary to increase cooling water flow or clean the cooler.

3. Check the Drainage System

Air compressors produce condensate during operation, which needs to be drained promptly. Check if the drainage system is unobstructed and if the drain valve is functioning correctly. Regularly and manually open the drain valve to drain water, especially in humid environments or after prolonged operation of the air compressor. Excessive condensate buildup can enter the compressed air pipeline, affecting the quality of laser cutting and potentially corroding internal compressor components.

4. Observe Equipment Operating Status

Continuously observe the overall operating status of the air compressor, including motor operation and belt drive. Check for motor overheating, which may be caused by overload or poor heat dissipation. Check for loose or worn belts; a loose belt will reduce the compressor's transmission efficiency, while severe wear may lead to breakage, affecting normal equipment operation.

IV. Shutdown Operation

1. Normal Shutdown

After laser cutting is completed, a normal shutdown operation is required. First, press the stop button to stop the air compressor. Then, turn off the power switch to disconnect the power supply. Next, close the intake valve to prevent outside air from entering the air compressor. Finally, open the drain valve to drain all remaining condensate from the air compressor to prevent condensate buildup and corrosion of components.

2. Emergency Shutdown

During operation, if a serious malfunction is detected in the air compressor, such as abnormal noise, smoke, or fire, immediately press the emergency stop button. The emergency stop button is usually clearly marked; pressing it will quickly cut off the power supply to the equipment, stopping the air compressor's operation to prevent further escalation of the accident. After emergency shutdown, promptly notify professional maintenance personnel for inspection and repair.

V. Daily Maintenance and Care

1. Regular Maintenance

Regular maintenance of the screw air compressor is an important measure to ensure its performance and service life. Maintenance should generally be performed according to the time intervals specified in the equipment's instruction manual. Maintenance includes replacing the lubricating oil, air filter, and oil filter. Regularly replacing these components ensures the air compressor's intake quality, lubrication effect, reduces equipment wear, and improves operating efficiency.

2. Cleaning the Equipment

Regularly clean the air compressor to remove dust, oil, and other dirt from the equipment surface. Use a clean cloth to wipe the surface. For hard-to-clean areas, a suitable cleaning agent can be used, but care should be taken to avoid corrosive agents. Simultaneously, clean dust from components such as the cooler and radiator to ensure effective heat dissipation.

3. Component Inspection Regularly inspect all components of the air compressor, such as belts, couplings, and valves. Check belt tension and wear; adjust or replace belts as necessary. Check that couplings are secure and not loose. Check that valves operate smoothly and have good sealing performance.

In conclusion, proper operation and maintenance of the laser-cutting screw air compressor are crucial for the smooth operation of laser cutting. Operators must strictly follow the operating procedures and perform daily maintenance to ensure stable operation of the air compressor and improve the quality and efficiency of laser cutting.