First of all, many people do not understand the precautions for the use of the group crane electric hoist, so the service life is very short, so a special person should be set up for maintenance and maintenance personnel to check the main performance and safety status of the group crane electric hoist once a week. Resolutely not operate with disease. When the brake does not work, the brake ring on the brake wheel of the motor fan must be checked in time, and it must not be stained with oil. The adjustment nut should be tightened to check whether the elasticity is good, so as to avoid the risk of accident due to brake failure. Of accidents are not rare. Secondly, pay attention to oiling and maintenance every day. The appropriate amount of lubricating oil should be added to the lubricating parts of the group hoist electric hoist, but some engine oil cannot be added casually. The leap oil should be clean and yellow. Change it frequently. Leap oil should be replaced every 2 months. After removing the impurities, you must add enough lubricating oil to the lifting reducer and running reducer before use. During the operation of the group hoist electric hoist, if the fault is found, the main power supply should be cut off in time. When the group hoist electric hoist does not work, it is not allowed to hang heavy objects in the air to prevent deformation of parts. After using the group crane, it should be stopped in the designated safe place. A rain cover should be installed outdoors. Group hoist electric hoist is not suitable for places full of corrosive gas or relative humidity greater than 85%. It cannot replace explosion-proof hoist, and it is not suitable to lift molten metal or toxic, flammable and explosive materials. When disassembling the lifting reducer, do not use screwdriver, flat shovel, etc. to hit the joint surface. Use a wooden hammer to gently hit the protruding part of the cabinet to avoid damaging the sealing plane between the cabinet and the cover. The working temperature of the group hoist electric hoist is -25 ~ +40C. It is forbidden to press two buttons in opposite directions at the same time while working, and the others can be operated at the same time.