Chain Electric Hoist after years of research, found that want to make the electric hoist effectively reduce fault, advance the work efficiency and prolong service life, eliminate safety hidden trouble, the method can be reference: First installation debugging and maintenance, must strictly check the limit switch is flexible and reliable, when the hook rose to the limit position, between hook enclosure to the drum shell must be greater than 50 mm Second in use, the absolute ban on unallowed environment, or more than the rated load and rated closing times per hour. The third new installation or after overhaul of electric hoist, first of all should be empty test run several times. But in before installation, power of avoid by all means try to turn. Should be done before the fourth in the normal use of static load test, and check whether the normal. Adjust electric hoist brake down volume 5, shall ensure that under rated load, brake down. 7 after the completion of the work required total power brake away, the detection power. 8 do not allow to press the two make the electric hoist at the same time according to the opposite direction of the flashlight door button. (10 t, 16 t, 20 t required greater than 120 mm). When the hook fell to the limit position, should ensure the safety of steel wire rope on the drum circle, security must be in 2 times more effectively.