Liaoning Star Pump Co., Ltd. production of QCB-type gasoline and diesel pump, YQ-type liquefied gas pump failure causes and troubleshooting methods may be the cause of the problem Remedy Handwheel motor shaft coupling, the pump does not turn 1, the pump cover or side panels There are impurities or external particles; 2, locking nut improper adjustment; 3, blade or rotor damage. 1, with a clean cloth or alcohol wipe the side panels, remove dirt or external particles; 2, readjust the lock nut; 3, replace the blade or rotor. No flow or traffic after boot smaller 1, the suction pump allows suction height; 2, the import pipeline is too long; 3, the import pipeline leakage; 4, the motor is not steering; 5, the filter is blocked. 1, reduce the pump position; 2, shorten the pipeline to reduce the elbow; 3, check the exclusion, plugging pores; 4, change direction; Pipeline vibration is too large, noise 1, the input pipe is too long, the road diameter is too small; 2, the road bend too much, the angle is small; 3, the filter is blocked. 4, blades, side plates, excessive stator wear; 5, bearing wear and tear; 6, the pipeline is not fixed or improper installation; 7, pump and subtraction machines, motors do not heart. 1, shorten the input pipelines, increase the pipe diameter; 2, reduce the elbow, increase the angle; 3, filter blockage. 4, replace the leaves, side panels, stator; 5, replace the bearings; 6, check and eliminate; Sudden increase in leakage Seal damage Replace the new seal Motor overload Heat or burn 1, pump overload; 2, the outlet valve is not open or open too small. 1, pump pressure and flow exceed the allowable range. Should change the pump, install electrical overload protection device; 2, completely open the valve