1. Low vacuum degree of rotary vane vacuum pump:

　　(1) The oil quantity of the rotary vane vacuum pump is insufficient. come on. (2) The pump oil is not clean and emulsified. Open the gas ballast valve and change the oil. (3) The grade of the pump oil is incorrect. Oil change (4) The oil inlet hole is blocked. Clean the oil inlet hole and adjust the oil quantity. (5) Air leakage. Check the shaft seal, exhaust valve, end cover, etc., and replace the sealing ring. (6) The exhaust valve plate is damaged. Replace with new valve. (7) The clearance is too large due to wear. Check clearance, repair. (8) The pump temperature rises and the viscosity of the oil is too low. Increase the amount of cooling water. (9) The temperature of the pump oil gas is too high. Air cooler. (10) The screws of the end cover are loosely tightened, causing the rotor shaft to shift. Disassemble and reinstall. (11) The rotary leaf spring is broken. Replace with new spring. (12) The filter screen of the intake pipe is blocked. cleaning. (13) The gas ballast valve is not closed/damaged. closed/repaired. (14) The key of the pump wheel is broken and the wheel is idling. change key.

　　2. Rotary vane vacuum pump card pump:

　　(1) The end face clearance of the rotary vane vacuum pump is too small, and the pump oil temperature rises too high. Grind the rotary vane and adjust the gap. (2) Sundries enter the pump. clean up. (3) The pump temperature rises. Enhanced water cooling. (4) The rotor is broken. Remove the pump and replace it. (5) The pump cavity is rusted. Wash rust.