Answer: (1) Fault phenomenon. The air compressor safety valve is activated.
(2) Cause analysis.
1) The system pressure is too high, exceeding 0.8MPa;
2) The safety valve setting is inaccurate;
3) The air compressor outlet door is not opened;
4) The spring adjustment pressure of the spring-type safety valve is insufficient, the spring fails or the elastic force is insufficient.
(3) Elimination method.
1) If it is normal, the pressure will recover naturally after it decreases;
2) Re-adjust;
3) Check and open the outlet door;
4) Repair or replace the safety valve.
