* Before installation, please check the insulation resistance of the motor and control box with a 500V megger. The cold resistance should be greater than 5MΩ at normal temperature before use;
* Never lift objects that exceed the rated load. The rated load is marked on the nameplate of the hook;
* Lifting objects and hooks cannot be lifted while swing;
* The limiter is not allowed to be used repeatedly as a travel switch;
* Do not lift objects connected to the ground;
* Please do not over-actuate;
* Always turn off the power before performing maintenance inspections;
* Maintenance inspection work must be carried out under no-load conditions;
* Please confirm that the wedge is securely installed before use.
Slewing arm jib crane