Electric hoist abnormal power failure

     Currently, it is a lot of construction  hoist equipment  will be used, the use of such a common problem will be more common, today introduced the next one common failure, abnormal power to hoist the harm and solutions.
      Mainly because of power outages did not hoist the rated working voltage is turned, unable to work, the reason there is a solution with the power supply system is not right to send electric power  Wire rope hoist   hoist the main, the control circuit of electrical damage, the line is disconnected or bad .
      Workaround: Lord required maintenance, the control circuit, be sure to hoist motor is disconnected from the power line, when the confirmation Lord, control circuit trouble, before re-commissioning; hoist motor starting torque is too small, so that no  rope hoist  lifting moving goods, and can not work, check with a multimeter or voltage meter and other measuring motor input voltage, because the voltage is too low, the motor will not start, you need other system voltage returns to normal before using electric hoist.
      Electric hoist overspeed protection is also necessary, when the electric hoist conical surface and the second brake brake brake surface wear or planar grid voltage fluctuation, set in the high-speed shaft speed sensor will cut off the main power from the electric hoist to the protective effect.