Check the main and control circuits of the electric hoist for electrical damage, disconnection or poor contact, which will make motor not work. The main control circuits need to to prevent the main and control circuits from burning the motor, or the hoist motor suddenly runs on electricity. , To disconnect the electric hoist motor from the power supply line, only supply power to the main and control circuits, jog the start and stop switches, check and analyze the working conditions of the control electrical appliances and lines, and repair or replace the electrical appliances or lines. Check whether the power supply system sends power to the electric hoist power supply. Generally, use a test pen to test it. To check whether the grid voltage is too low, the starting torque is proportional to the square of the voltage. The electric hoist TOYO reminds that the acceleration torque cannot overcome the load torque and cannot reach the running speed, and the grid voltage should be appropriately increased. If the voltage at the motor terminal of the electric hoist is more than 10% lower than the rated voltage, the starting torque of the motor is too small, so that the hoist cannot lift the goods and cannot work. When checking, use a multimeter or a voltmeter to measure the voltage at the input terminal of the motor. Secondly, check whether the power fuse is blown. If one phase is broken, the motor will start in single phase, the starting torque is zero, and the motor cannot roll, and enough fuses should be replaced.
Post time: Feb-15-2022