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Circulating Vacuum pump maintenance problems

Serial No. Common faults Problems may happen Elimination method

1，No vacuum or vacuum vague is not accuracy

（1）.Motor speed is slow or voltage is too low，Check the voltage stable or not

（2） Vacuum bottles, check valve dirt clogging or corrosion

（3）Clean up the dirt or replace new bottles and new valve core

（4）.Water inlet interface, filter network blocked ,Cleaning,and taking out of internal dirt

（5）.Impeller loss,Change a new one

（6）water into vacuum gauge water or air leakage,Clean the water, make the clock back to zero or replace a new one

（7）.Vacuum pipes blocked or pipe crack,Clean it or replace the new tube

2 ,Motor does not work

（1）fuse burn out,Change a new one

（2）. Run capacitor breakdown,Replace the new one equal to the original capacity

（3）Motor winding burned ,Replace the new machine

（4） Bearing abrasion , seriously stuck,Replace new bearing

（5）.The impeller were mountains to death,Clear clutter, correcting impeller position

（6）Loose thread virtual welding or line card,Welding, line card is tight

3 , Motor heat, too much noise

（1）.Bearing wear,Replace new bearing

（2）.The impeller wear deformation,Replace the new impeller

（3）.Voltage instability or voltage is too low,Check whether the line overload and presence of low v

4 , Tank water

（1）.Filter tube drainage direction is not correct,Adjust the direction of drainage

（2）Water level is too low,Add water to the weir

5 , Leaking

（1）.Water tank overflow water nozzle loose or seal aging,Tighten the water nozzle or replace the sealing ring

（2）.Water tank burst,Replace the water tank

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Zhengzhou Keda Machinery and Instrument Equipment Co., Ltd.