Among the many precautions for using chain electric hoists, the following are the specific points that we need to pay special attention to:

　　1. The binding and hanging of the electric chain hoist are not firm or balanced, which is highly likely to cause sliding or object detachment, so this operation should be stopped.

　　2. The weight of the object is unknown or overloaded, the pulling force is unknown, and unloading is not allowed. Operation is prohibited.

　　3. To determine whether there are people or floating objects standing on the suspended object, if any, immediately stop the operation.

　　4. If there are defects or damages in the structure or components of the chain electric hoist that affect safe operation, such as brake safety device failure, hook nut anti loosening device damage, or steel wire rope damage reaching the scrapping standard, all of these operations must be stopped.

　　5. If the workplace is dark and unable to see the site, command signals, and suspended objects clearly, please stop the operation.