Screw air compressor fault Daquan

The 35 common fault solutions for screw air compressors summarized by the air compressor after sales are for your reference only. Please consult the air compressor after sales engineer.

1. The pressure on the pipeline exceeds the rated load pressure, and the pressure regulator is disconnected. There is no need to take measures. When the pressure on the pipeline is lower than the loading (position) pressure of the pressure regulator, the screw air compressor will automatically load;

2. If the solenoid valve fails, remove it for inspection and replace it if necessary;

3. If there is leakage in the control pipeline between the oil and gas separator and the unloading valve, check the pipeline and connection. If there is any leakage, repair it.

4, check the "before separation" and "after separation" two manual valve and pressure gauge leakage, such as leakage, should eliminate the leakage fault or replace the manual valve;

5. Check whether the regulating solenoid valve is leaking. If it is leaking, eliminate the fault and replace the regulating solenoid valve if necessary;

6. If the air consumption exceeds the exhaust volume, check the pipeline for leakage. If so, eliminate the leakage point or reduce the air consumption;

7. Check whether the air filter element is blocked, and clean or replace it if necessary;

8, check whether the safety valve leaks, such as leakage should be eliminated, if necessary, replace;

9. Check whether the butterfly valves are all open and whether the air intake regulator is working properly. If there is any problem, replace or readjust the pressure switch; check whether the upper and lower limits of the screw air compressor pressure switch are normal, and adjust if necessary;

10. If the compressor of screw air compressor fails, contact the manufacturer and check the compressor after negotiation.

11, check the butterfly valve mechanism for mechanical failure, if any, should eliminate the fault;

12. Whether the loading solenoid valve leaks, such as leakage, the fault should be eliminated, and the solenoid valve should be replaced if necessary;

13. Check and adjust the upper and lower limits of the pressure switch, and replace the pressure switch if necessary.

14. Check whether the exhaust pressure exceeds the regulations, if it exceeds, it should be adjusted to the specified exhaust pressure;

15. Check whether the lubricating oil is clean and whether the oil level is normal, and make up or replace the lubricating oil if necessary;

16. Check whether the fan motor speed is normal and whether the exhaust port is blocked;

17. Check whether the appearance of the oil cooler and after-cooler is clean, and clean the outer surface of the cooler when necessary;

18. Check whether the environment has any influence on the air intake and exhaust of the unit. If so, the influence of external factors should be eliminated to ensure the normal ventilation of the unit;

19. Check whether the temperature control valve is damaged; check whether the solenoid valve solenoid coil and solenoid valve diaphragm are damaged, and repair or replace if necessary;

20. Check whether the filter element of the oil and gas separator is blocked or has excessive resistance. If so, replace the filter element of the oil filter.

21. Whether the oil content of the condensate discharged from the trap is large, if it is large, the leakage point in the machine group should be checked and eliminated;

22, check the screw air compressor oil level is high, such as high, should reduce the oil level;

23. Check whether the opening pressure of the pressure valve is normal, and check and replace the valve if necessary;

24. Check whether the oil return pipe is blocked, and clean or replace the oil return pipe if necessary;

25. Check whether the filter element of the oil and gas separator of the screw air compressor is invalid, and replace the filter element of the oil separator if necessary.

26, check the control cylinder for action, check the butterfly valve for mechanical failure

27. Check whether the loading electromagnetic coil has suction force;

28. Check the sub-circuits where the solenoid valves are located one by one:

(1) Check whether there is a control voltage, if not, check whether the fuse is in good condition;

(2) Check whether the control relay and time relay operate normally.

29, the use of lubricating oil brand is wrong, should be cleaned after a thorough oil change;

30, oil sticky, coking, should be cleaned after a thorough oil change;

31. If the shaft seal leaks seriously, remove and replace it;

32, screw air compressor unloading valve flap original position change, re-adjust the position.

33. Check whether the automatic air switch jumps and whether the voltage is normal, which should be excluded;

34. Whether the closing degree of the intake butterfly valve is normal should be checked and readjusted or replaced;

35. Check whether the three phases of contactor and motor are normal during Y-△ start.