Two-speed electric hoist used daily Precautions

1. After a new installation or installed after dismantling the hoist should first be empty commissioning times. But not before the installation is complete, avoid power test rpm.
2. In normal use should be carried out to 125% of rated load, lifting off the ground about 100 mm,chain Block 10 minutes of static load test and check whether it is normal.
3. Dynamic load test is based on rated load weight for repeated lifting and move around the test, trial and check the mechanical transmission parts, electrical parts and connecting parts are normal and reliable.
4. In use, the absolute prohibition does not allow circumstances, and exceeds the rated load and nominal hourly closing times (120 times) of the cases.
5. Installation and maintenance, must be strictly checked limit device is flexible and reliable, when hook up to the upper limit position, the hook from the shell of the housing to the roll must be greater than 50mm (10t, 16t, 20t must be greater than 120mm). When the hook down to the lower limit position, should ensure safety rope on the drum circle, circle must be effective and safe in two laps or more.
6. Pressing both allowed the opposite direction of the electric  lift hoist  movement flashlight door button.
7. After work necessary to supply the total gate opened, cut off the power.
8. Hoist by hand manipulation, the manipulator should fully grasp the safety rules, non-pulled oblique hanging crooked.
9. In use must be performed by specialized personnel hoist regularly checked and found that failure to take timely measures and carefully documented.
10. Adjust the amount of electric hoist brake down, they should ensure that the rated load, brake down the amount S ≤ V/100 (V stable within the next minute the load lifting distance).
 11. Rope discard criteria: wire rope inspection and discard criteria by CB/T5972-1986 "crane wire rope inspection and retirement of practical norms" implementation.
12. Electric hoist use must keep enough oil and keep oil clean and should not contain impurities and dirt.
13. Oiled rope should be used when a stiff brush or a small piece of wood is forbidden by hand directly to the working rope oiled.
14. Electric hoist does not work, you can not put heavy objects hanging in the air, to prevent parts produce permanent deformation.
15. During use, if found fault, immediately turn off the main power supply.
16. Use should pay particular attention to the situation of wearing parts.
17.10 to 20 tons  hoist equipment  in the long continuous operation may occur after automatic power-off phenomenon, which belongs to the motor overheating protection function, then you can drop over a period of time until the motor has cooled down you can continue working.