Normal Maintenance of Electric Hoist
Normal Maintenance of Electric Hoist
1. Newly installed or installed after dismantling and inspection of the electric hoist, the first should be empty test run several times. But not before the installation is completed, do not electrify the test run.
2. Before normal use should be 125% of the rated load, lifting from the ground about 100 mm, 10 minutes of static load test, check whether it is normal.
3. Dynamic load test is to rated load weight, for repeated lifting and moving test, after the test to check its mechanical transmission part, electrical parts and connecting parts are normal and reliable.
4. In use, it is prohibited to use the product under non-permissible environment and over the rated load and rated closing times per hour (120 times).
5. Installation and commissioning and maintenance, must strictly check the limit device is flexible and reliable, when the hook rise ** limit position, the hook shell to the reel 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 reel on the wire rope safety circle, the effective safety circle must be in more than 2 circles. 6.
6. It is not allowed to press the two electric hoist at the same time to make the electric hoist according to the opposite direction of movement of the hand door button.
7. After the work is completed must pull the main gate of the power supply, cut off the power supply.
8. electric hoist should be manoeuvred by a person, the manipulator should fully grasp the safety regulations, is strictly prohibited to pull the skewed hanging.
9. In use by specialists must be regularly checked on the electric hoist, found faults in time to take measures, and carefully recorded.
10. Adjustment of electric hoist braking slippage, should ensure that the rated load, braking slippage S ≤ V / 100 (V for the load in a minute under the distance of stable lifting).
11. Wire rope scrapping standards: wire rope inspection and scrapping standards according to CB/T5972-1986 "lifting machinery with wire rope inspection and scrapping of practical specification".
12. Electric hoist use must maintain sufficient lubricant, and keep the lubricant clean, should not contain impurities and dirt.
13. Wire rope oil should be used when the hard bristle brush or small pieces of wood, is strictly prohibited directly by hand to the wire rope is working on oil.
14. When the electric hoist is not working, do not allow the weight hanging in the air to prevent the parts from ** deformation.
15. In the process of use, if found fault, should immediately cut off the main power supply.
16. Special attention should be paid to the condition of wearing parts in use.
17. 10~20 tonnes hoist in a long time after continuous operation, there may be automatic power-off phenomenon, which belongs to the motor's overheating protection function, at this time you can drop, after a period of time, when the motor cools down can continue to work.
