1, the operation should firsttry hand chain hoist, when the weightoff the ground, such asin normal operation,reliable braking. Can continuelifting. 2, the operator can notstandheavy objectson top ofoperatingthe job, nor willstay in the airafterliftingheavy objectsandleft the scene. 3, theliftingprocess,forbids anypersonto walkorstand underthe weight. 4Do not usenon-manual drive modelifting heavy objects. Pull themwhenfound, shall not increase thetension, stop using it immediately, check the weightof itsfive, heimplicatedobjects, heavy weightexceedsthenominal weight, gourds and otherpartsfor damage. 6, increase or decreasethe distanceshall not exceedthe weightlifting height, to prevent damage tothe parts. 7, is prohibitedbymore thantwoandtwohoistswhilelifting weights. 8, a typical example ofthe operationin violation ofsafety rules, see Appendix A (Appendix tips).