Published at Tuesday, March 26th, 2019 - 00:19:34 AM. wiring. By Leola Dupond.
Wiring diagrams can aid a technician in many ways. They allow a technician to systematically troubleshoot a problem. By analyzing the system’s wiring diagram, a technician can see where the common junction is located that could affect the components that aren’t working. The technician can then start at that point without having to check the entire system. For example, a technician arrives on the job and finds that the compressor is the only component of the system that is not running. By studying the wiring diagram, it can be quickly determined from where power is applied to the compressor and which components are wired in series with it. When possible, it is a good practice for a technician to keep on hand wiring diagrams of the equipment most frequently serviced
This book provides HVAC/R service technicians with exceptionally practical information on the unique wiring diagrams, methods, technician short-cuts, and potential pitfalls encountered on the job. It begins with a discussion of general electricity and electrical circuits, and then moves quickly into explaining wiring diagrams for HVAC and refrigeration systems, and the new devices that are encountered with each new diagram. It features accessible, technician-levelexplanations of electronics. KEY TOPICS: Electrical Concepts. Simple Currents. Standing Pilot Furnaces. Heating/Air Conditioning Circuits. Troubleshooting Strategies. Testing and Replacing Common Devices. Repair Strategies. Commercial Systems. Motor Applications. Power Wiring. Testing and Replacing Motors and Start Relays. How Motors Work. Low-Voltage Room Thermostats. Electronic Ignition Gas-Fired Furnaces. Oil Heat. Electric Heat. Boilers. Heat Pump. Ice Makers. Miscellaneous Devices and Accessories. Wiring Techniques. DDC Controllers.MARKET: For HVAC/R service technicians. Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills.”This HVAC training video program, is available in DVD format, is somewhat of a departure from what we’ve offered in the past,” said Johnson. ”It was produced specifically for technicians who really don’t need theory on electrical fundamentals, but want to know more about how to read schematic diagrams and then use them to track down the source of the problem in an HVAC/R system that’s down.” According to Johnson, ”Using Schematics To Troubleshoot HVAC/R Electrical Circuits, Part 1” came about because of feedback from the industry. ”It’s shorter than our fundamentals training videos, and the Technician’s Resource Guide contains only the diagrams and a short introduction of fill-in-the-blank information It doesn’t incorporate review questions and in-depth theory like our fundamentals programs do.”
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