Common Problems And Solutions Of Screw Air Compressor

Jul 7, 2024

1. High quality screw air compressor head temperature is too high caused by jumping machine: due to the high ambient temperature caused by jumping machine, need to improve the ambient temperature, through the improvement of reasonable ventilation device to reduce the ambient temperature; Because the position of the lubricating oil is abnormal, the temperature difference of the oil cooler that ensures the normal position of the lubricating oil is abnormal, so the oil cooler should be checked. The lubricating oil temperature difference before and after the oil cooler must be about 18. When the temperature difference is too low, clean the oil cooler, and when the temperature difference is too high, it means that too little lubricating oil has passed through the cooler. Check whether the oil line is blocked. If the oil is blocked, replace the oil cooler. Check whether the thermostatic valve works normally; Check whether the fuel cut-off valve is working properly; When the temperature is too high during unloading, check whether there is leakage in the control air passage of the oil content and the oil pressure of the foundation is too low.

2. The air compressor outlet oil content is high (under normal circumstances (2-3ppm)), first of all, the oil free screw air compressor exhaust pressure must be above 4Bar; Using a paper cup or glass sample to judge that there are roses on the water surface is normal, there is oil water when the oil content is too high; Check whether the oil level is too high and whether the lubricating oil is dirty; Check whether the return pipe is blocked, eccentric or too short; Check whether the check valve on the return pipe is blocked or the direction is opposite; Check that the return hose has passed through the bottom of the rotor; Check whether the baffle of the oil and gas separator is damaged; Check whether the oil and gas separator is damaged.

3. The lubricating oil of the oil injection screw machine contains water. Unloading the unit for a long time, adjusting the air usage, increasing the compressor loading time; Thermostatic valve failure, thermostatic valve maintenance or replacement; Cooling water temperature is too low, do not use chilled water; Water cooler leaks, repair or replace water cooler.

4. Nozzle outlet oil content is high) oil level is too high, oil into the standard height; Oil temperature is too high, check the temperature control valve, cooling water, cooling water pressure, oil cooling efficiency; The small hole of 2 mm in the return pipe is blocked and dredged; Return pipe bent or offset, adjust or replace the return pipe; Replace the oil and gas separator when it is damaged.

5. The air compressor is not loaded: the solenoid valve will cause mechanical failure when working, determine whether there is 10% control gas, if there is, it will lead to the unloading valve failure, the unloading valve maintenance. If not, check whether the smaller pressure valve has gas leakage, whether the gas pipe is blocked, and whether the gas is leaking; Electrical failure occurs when the solenoid valve does not operate, the solenoid valve is damaged, the solenoid valve is repaired, or the connection is reconnected due to poor contact.