1. Reasons:
Excessive water supply causes the motor to be overloaded;
Motor phase loss;
The vent hole is blocked;
Impeller dragging other parts
2, the solution:
Reduce the water supply to the normal range (refer to the supply volume of the water ring vacuum pump instruction manual);
Check that the wiring is secure;
Check the exhaust port;
Open the water ring vacuum pump cover to adjust the clearance between the impeller and other components
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