1. New installation or maintenance after the demolition of the subject after installation of electric hoist, the first test run should be empty several times. But before installation, avoid power test switch. 2. The work should be carried out before 125% of the rated load, lifting off the ground about 100 mm, 10 minutes of static load test to check whether it is normal. 3. The dynamic load test was rated hoist load weight pa200, as repeatedly lift and move around the test, check the mechanical transmission parts after the test, the electrical part and the connecting portion is normally reliable. 4. Use of the hoist, the absolute prohibition of the use in the environment does not allow sha electric hoist, and exceed the rated load and nominal closing times (120 times) per case. 5. installation and maintenance, must be strictly limiting device is flexible and reliable inspection, when the limit was raised to the position of the hook, hook it to the shell casing from the reel must be greater than 50mm (10t, 16t, 20t must be greater than 120mm). When the hook is lowered to the limit position, it should ensure that the reel ring rope safe, effective and safe rings must be at least 2 laps. 6. Press the two are not allowed in the opposite direction of the electric hoist motion control pendant button. 7. After the completion of work necessary to supply the total gate opened, cut off the power. 8. hoist by hand manipulation, the operator should fully understand the safety rules, non-hanging crooked oblique pull. Guards hoist generally have more guards to ensure the safety of personnel and, but protective devices should also have some basic requirements. 1. prevent dangerous function, suitable hoist 900kg hoist operating conditions, without prejudice to the production and operation. 2. Install a solid, reliable performance, and have sufficient strength and rigidity, accurate and stable performance. 3. durable, does not affect the gourd adjustment, repair, lubrication and inspection. The protective device itself should not cause harm to the operator. yale hoist | Shaowu hoist | provided by the industry's leading heavy machinery Co., Ltd., Henan Province, generous. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) strong, credible, in Zhengzhou, Henan engineering, construction crane industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving generous innovative ideas will lead into the brilliant heavy and you work for a better future!