I am trying to understand how to initiate a lockout relay for my place of business so that I can prevent injury to anyone working on electrical devices.
I would purchase a basic "trouble-shooting" kit. This includes a temperature gauge, a set of sockets, and allen wrenches designed for Hvac units. Your AC manual has a bi-unit schematic.
The lockout relay is something that has to do with the Microsoft Office program. This type of relay has to do with controlling certain types of saving program prompt settings.