Regarding the maintenance knowledge of electric hoists, the replacement parts for wire rope hoists should have the same performance and materials as the original parts.

　　When structural components require welding repair, the materials and welding rods used should meet the requirements of the original structural component, and the welding quality should meet the requirements. When repairing the wire rope hoist, the wire rope electric hoist should be moved to a position that does not affect other wire rope electric hoists. If the above requirements cannot be met due to limitations, reliable protective measures should be taken or guardians should be set up.

　　Place all electric hoist controller handles in the zero position, cut off the main power supply of the hoist, lock or hang signs. It should be noted that when the wire rope electric hoist is in working condition, maintenance, repair, and manual lubrication should not be carried out.