An O&M manual is a comprehensive document that provides detailed instructions for the operation, maintenance, and repair of a particular system or piece of equipment. It is typically used in the engineering and construction industry, and is an important tool for ensuring that the system or equipment is operated and maintained correctly. O&M manuals are usually created by the manufacturer of the system or equipment, and are designed to provide detailed information about the system or equipment, including its design, operation, and maintenance requirements. O&M manuals also provide information about the system or equipment’s safety features, as well as instructions for troubleshooting and repair. O&M manuals are essential for ensuring that the system or equipment is operated and maintained correctly, and can help to reduce the risk of accidents or malfunctions.