Answer: There is an oil cut-off valve between the oil filter and the compressor. When the oil cut-off valve cannot be opened, the temperature of the compressor rises rapidly after startup due to lack of oil lubrication and cooling, and it will automatically shut down in about 1 minute.
Remove the temperature plug at the exhaust end of the compressor main engine, and you will find that the plug is dry and oil-free, and there will be blue smoke floating out of the hole. Remove the oil cut-off valve and gently move the valve stem with your fingers to see if it can be pushed back and forth and easily reset. If it is difficult to move or return, the oil cut-off valve needs to be further disassembled. If there is oil stain on the valve stem or valve hole, it needs to be polished with fine sandpaper until it can slide easily; If the spring is broken or there is foreign matter such as carbon deposits, it will also affect the movement of the valve stem. At this time, the spring needs to be replaced or the oil cut-off solenoid valve needs to be replaced as a whole.
