What is the reason of the wire rope electric hoist suddenly does not work?
Q: What is the reason of the wire rope electric hoist suddenly does not work?
A: The electric wire rope hoist suddenly do not work are generally the following situations:
Not energized:
Check whether the power supply system for electric hoist power transmission, general with Shi Dianbi test, as did the power transmission and other power transmission after work.
Second, the lack of phase:
Check the main electric hoist, electrical control circuit is damaged, the line is disconnected or poor contact, but also make gourd motor phase does not work, this is the case, the need to overhaul the main control loop, overhaul, in order to prevent the main control loop given to the power of three-phase motor phase loss and burned the motor, or gourd motor suddenly energized operation, resulting in harm, must hoist motor is disconnected from the power line, only to the main control circuit power transmission, then jog starter and stop switch, check the analysis and control of electrical and wiring work, repair or replacement of appliances or wiring problems, confirm the main control loop failure, before re-commissioning.
Third, the voltage is too low:
Electric hoist motor terminal voltage is lower than the rated voltage of more than 10%, the motor starting torque is too small, the gourd to lifting goods fixed, and can not work, check with a multimeter or voltmeter, measure the motor input voltage.