1, check that safety protection devices and indicating instruments are complete.
2, fuel oil, lubricating oil, hydraulic oil and cooling water should be added.
3. Before starting the oil pump, let the engine run at low speed for some time.
4, check the wire rope and connection parts should comply with the regulations.
5. Check whether the hydraulic pressure is normal.
6, check the tire pressure and fittings should be no loose.
7. Adjust the legs. Ensure that the fully unfolded legs are laid in the specified order, so that the lifting is in a state of water. Adjust the machine body so that the inclination of the slewing bearing surface does not exceed11000 (with the standard bubble in the center).
8, a comprehensive inspection of the ground conditions in the workplace. The ground of the work site must have the conditions that the crane can be in a horizontal state and can completely bear the torque acting on the legs.
9. Pay attention to whether the foundation is soft. If it is soft, the legs must be padded with boards or clods that can bear the weight.
10, keep your legs away from the foundation.
1 1. Underground buried objects should be investigated in advance, and safety signs should be placed near the buried objects to attract attention.
12, confirm the weight and center of gravity position of the hoisted object to prevent overload.
13, according to the lifting operation curve, determine the workbench radius and rated total lifting weight, that is, adjust the arm length and angle to make it work safely.
14. Confirm the lifting height. According to the crane model, the height that the hook can be lifted is specified.
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