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Set the loading and unloading pressure again. Do not adjust the unloading pressure too high (not enough gas or air compressor) and then adjust the air intake of the machine so that the air compressor is always in a stable loading state. How much gas is used to produce the air compressor? Gas, infrequent loading and unloading impact, if the pressure difference is relatively large, replace the oil; if the valve fails, replace the valve.
The computer board has a set of items, high pressure protection, when the pressure reaches or will reach your set, the machine will alarm shutdown, and flashing alarm lights. Generally, the compressor loading and unloading pressure of the computer board plus the dirty oil core, and the pressure difference between P1 and P2 are large, and the two factors together cause the pressure to approach the high pressure protection alarm value (the protection pressure value can be modified). The other is that the intake valves, solenoid valves and other valve parts fail, the machine does not unload, and the machine is directly loaded to the alarm shutdown.