This comprehensive technical manual provides a detailed guide to the Atlas Copco DTH hammer series, covering models QL40 through QL200. The manual emphasizes safety procedures from the outset, outlining critical precautions to be taken before operating the equipment. It proceeds to cover installation and operation, starting with a thorough explanation of DTH setup, including valve selection, choke sizing, and Hydrocyclone® setup. The manual then delves into the intricacies of drill lubrication, covering both lubricator selection and check procedures, as well as water injection techniques for different drilling environments. Further, the manual addresses drill operation, outlining key considerations such as rotation speed, collaring, feed force, and hole cleaning techniques for both dry and wet drilling environments. The manual provides clear instructions for bit changing, covering both the removal and installation of the drill bit. Maintenance and repair are addressed in detail, encompassing DTH service procedures, disassembly, Hydrocyclone® service, and DTH inspection techniques. The manual then guides users through the DTH assembly process, specifically addressing the replacement and installation of exhaust tubes. It concludes with a detailed discussion on bit selection and service, including bit sharpening techniques. A troubleshooting section helps identify and address common issues, and a dedicated section outlines the technical specifications for each DTH hammer model. Finally, the manual includes a comprehensive parts list, allowing users to easily identify and order replacement components.

The Atlas Copco DTH hammer technical manual covers a range of models from the QL40 to the QL200, encompassing a broad spectrum of drilling applications. These robust hammers are designed for demanding tasks in various industries, including mining, quarrying, construction, and civil engineering. With their exceptional power and durability, Atlas Copco DTH hammers are renowned for their high penetration rates, long service life, and consistent performance in challenging rock formations. The manual serves as a comprehensive guide for operators, technicians, and maintenance personnel, providing detailed information on the operation, maintenance, and troubleshooting of these versatile drilling tools. The manual's detailed coverage of each model, from the QL40 to the QL200, allows users to access specific information tailored to their particular DTH hammer. It outlines the technical specifications, operating procedures, maintenance schedules, and troubleshooting tips for each model. The manual also includes comprehensive diagrams, illustrations, and tables to enhance understanding and facilitate practical application. Alongside the technical aspects, the manual emphasizes safety procedures and best practices, ensuring responsible operation and the longevity of the equipment. This invaluable resource empowers users to maximize the efficiency and reliability of Atlas Copco DTH hammers, contributing to optimal drilling performance and overall project success.