Answer: (1) Cause analysis.
1) There is a leak in the air pipeline or equipment;
2) The upper and lower pressure difference of the pressure switch is too small;
3) The air consumption is unstable;
4) The valve core of the pressure maintaining valve is not sealed tightly and the spring is fatigued;
5) The upper pressure limit of the air compressor is set too low.
(2) Elimination methods.
1) Check the leaking part and eliminate it;
2) Reset (generally the upper and lower pressure difference is more than 0.2MPa);
3) Increase the capacity of the air storage tank;
4) Repair or replace the valve core, replace the spring;
5) Reset the pressure switch.
