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Maintenance and safety precautions of electric hoist
1. Newly installed or dismantled after the installation of electric hoist, first of all should be carried out empty car test times. But before the installation is not allowed to try to turn on electricity.
2. In normal use should be carried out under the rated load of 125%, up from the ground about 100 mm, static load test for 10 minutes, and check whether normal.
3. The dynamic load test is to test the mechanical transmission part, the electrical part and the connection part with the rated load weight for the repeated lifting and the left and right movement test.
4. In the use of absolute prohibition in the environment, and more than the rated load and the number of hours per hour (120 times).
5. Installation and maintenance, must strictly check the limit device is flexible and reliable, when a hook rises to an upper limit position, the hook shell to the drum shell distance must be greater than 50mm (10t, 16t, 20t must be greater than 120mm). When the hook down to the lower limit position, should ensure that the winding rope safety ring, effective safety ring must be more than 2 laps.
6. Is not allowed while pressing the two electric hoist movement in the opposite direction of the switch button.
7. After the completion of the work must be the power of the total brake, cut off the power supply.
8. Electric hoist should be manipulated by the operator, the operator should be fully grasp the safety operation rules, is strictly prohibited crooked oblique hanging.
9. In the use of specialized personnel must regularly check the electric hoist, the failure to take timely measures, and carefully recorded.
10. Adjust the glide quantity of electric hoist, should ensure that the rated load, brake glide quantity S (V = V/100 for stable load in the next minute lifting distance).
11. Electric hoist must be used in the maintenance of adequate lubricating oil, and keep the oil clean, should not contain impurities and dirt.
12. Wire rope should be used when the hard brush or small pieces of wood, it is strictly prohibited to use hand directly to the work of wire rope oil.
13. Electric hoist does not work, the weight is not allowed to hang in the air to prevent permanent deformation of parts.
14. In the use of the process, if found fault, should immediately cut off the main power supply.