References to acceptance and periodic tests of elevators have been updated to A17.1 2007 edition requirements. An in-depth guide, designed for the service technician, covering elevator maintenance programs and practices as related to electric and hydraulic elevators. Also covers, escalators and moving walks. This publicaton is a comprehensive "how-to" guide that can be used for training classes or home study. In addition to technical material, the manual presents topics such as: Public Relations, Maintenance Safety, Maintenance Control and Trouble Shooting. From Elevator World's website.