1.宝珠砂维保的目的和意义 1 elevator maintenance purpose and significance 宝珠砂保养是指定期对运行的宝珠砂部件进行检查、加油、清除积尘杂物、调试安全装置的工作。目的是通过巡检，排除潜在故障，是为了减少宝珠砂故障发生。并不是维保过宝珠砂就不会出现故障。 Elevator maintenance is the specified period of the operation of the elevator parts for inspection, refueling, cleaning dust debris, commissioning safety devices. The purpose is to eliminate potential accidents through inspection, in order to reduce the elevator failure. Is not the maintenance of the elevator will not
