Answer: (1) Cause analysis.
1) The air consumption is too large, and the air compressor is running in the low pressure range;
2) The air filter is blocked;
3) The air inlet valve is not working properly;
4) The capacity adjustment valve is not adjusted properly.
(2) Elimination method.
1) Check the consumption and add a compressor if necessary;
2) Check or replace;
3) Disassemble, clean and add lubricating grease;
4) Reset and adjust.
