Introduction to Appliances Credit Hours: 3 Approximate reading time: 0.5 Hours Approximate online time: 0.5 Hours You Must Be Signed In To View This Program. Register Today NFPA Documents Disclaimer- NFPA and other resource editions cited within the CFITrainer.Net site were current as of the release of the respective modules. The field of fire investigation and its guiding documents are constantly evolving and it is incumbent upon the fire investigator to remain up to date with the guidance in the current editions of the documents referenced in all modules on CFITrainer.Net, regardless of which edition was used in the writing of the module. Program Abstract This module offers a basic introduction about how some selected major appliances operate. It covers the main components often used in major appliances (gas and electric), how some major appliances use energy to generate heat, and common safety and thermal protection devices. Applied examples of the operation and control processes are drawn from major residential appliances, including cooktops, ovens, ranges, refrigerators, freezers, clothes dryers, dishwashers, and dehumidifiers. The module concludes with a brief explanation of evidentiary issues involving major appliances at the fire scene and provides guidance on retaining evidence. This module can be watched standalone and also functions as a pre-requisite for IAAI's Appliances Fires Residential Course. The Appliance Fires Residential Course covers how appliances fail and cause fires with examples and demonstrations of how to evaluate appliances as a potential fire cause.