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A motor launch, abnormal:Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:Ready-Mixed Concrete Making Plant,skip type batching plant,portable diesel concrete mixer,etc. We will provide you with the best product and service. (1 ), power 1, power supply contact bad, check the main line. 2, the motor starting control line fault. 3, motor, three-phase voltage instability. 4, AC contactor contact is not clean. 5, the contactor delay delay time setting short head. 6, the line voltage is too low. 7, the power of the transformer is too low. 8 beton mixer, a short circuit breaker tripping. ( 2) concrete mixing batch plant for sale, hydraulic 1 main hydraulic, electro-hydraulic reversing valve in the reversing valve core is not in place, when the motor is started Planetary Concrete Mixer manufacturer, the main oil pump of oil will make the main cylinder or a swing cylinder motion, causing the load starting valve core is not in place. May be due to the reset spring break, may also be in the oil dirt stuck. 2, the electro-hydraulic valve solenoid valve cannot return a. Electromagnetic valve oil for hydraulic valve, so that the motor load starting, check whether the electromagnetic valve is stuck or spring is broke.