ANSI/HI Standards for Rotodynamic Installation, Operation, and Maintenance (IOM) have historically been subdivided into ANSI/HI 1.4 Rotodynamic Centrifugal Pumps for Manuals Describing Installation, Operation, and Maintenance and ANSI/HI 2.4 for Rotodynamic Vertical Pumps for Manuals Describing Installation, Operation, and Maintenance. The demarcation between these two standards was determined by the arrangement of the hydraulic configuration (impeller, casing, bowl, or diffuser).

However, in each case they have shared a standard outline with similar content that is better addressed collectively rather than separately. Every effort has been made to include and expand all the information contained in these previous standards into a single resource. This document establishes a single source for a standard outline for IOM manuals for the pump community.

The normative portion of this standard is prescriptive in nature and thereby mandatory for compliance to this standard; it provides a standard outline for manufacturer's IOM manuals.