Three-column installation survey site conditions: · Installation location: The ground must be flat and solid (preferably a concrete structural layer), and can withstand the force and moment transmitted by the columns. · Space clearance: Pay attention to whether there are pipes, air ducts, lamps and other obstacles above the ceiling, and ensure that the crane has sufficient installation and operating height. Low headroom hoists are designed to maximize the use of space. · Power supply: There needs to be a 380V (high power) or 220V (low power) industrial power supply nearby.