压缩机维护保养题目（Compressor maintenance topics）.doc

压缩机维护保养题目（Compressor maintenance topics） New screw compressor after 1000 hours of operation, maintenance items are (A, B, C, D) A check the intake valve guide rod, and filling grease B replacing the coolant (oil) C, fixed bolt and street view pipeline fastening wire terminal D clean air filter, 2 screw compressor in the operation after 2000 hours of maintenance projects (A, B, C, D) A check and remove the cleaning oil mirror, B check line, C, replace the air filter D, replace the oil filter 3 、 screw compressor in operation 3000 hours or 1 years, maintenance items are (A, B, C, D) A clean air inlet valve and cooler, replace the O ring, and grease B examination and three to the solenoid valve, relief valve, pressure maintaining valve and the pressure difference protection switch and starter C to replace the air filter, oil filter, oil separator D motor grease 4, screw compressor in operation 6000 hours later, maintenance items are (A, B, C, D) A replace coolant (oil) B, change oil fine separator C, replace oil filter D, replace air filter element 5, screw compressor can not start (electrical fault light), there may be reasons (A, B, C, D) A fuses burn the B protection relay action or start the relay fault C start button contact, bad D motor fault 6, screw compressor running current high, air compressor self stop (electrical fault light), there may be reasons (A, B, C, D) A voltage is too low, B exhaust pressure is too high, C oil separator is blocked (lubrication oil pressure is high), D air compressor main engine failure 7, screw compressor running current is lower than the normal value, there may be reasons (A, B, C, D) A air consumption is large (pressure at setpoint), B air filter is blocked C intake valve action is bad, such as jamming and other D valve adjustment improperly 8, screw compressor head exhaust temperature lower than normal (lower than 70 degrees Celsius), there may be reasons (A, B, C, D) A environmental temperature is low, B no load too long, C ex