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Using Voltmeters and Ohmmeters.(Brief Article)
Air Conditioning, Heating & Refrigeration News
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April 2, 2001|
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COPYRIGHT 2001 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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Sometimes a Tech Has to Shut Off the Power to Get to the Root of the Problem.
Our last article covered voltage troubleshooting in series with power-consuming devices (motors) ["Electrical Troubleshooting," March 5, p. 16]. The article differentiated between an open and a closed switch, and revealed how service technicians must ask themselves where Line 1 and Line 2 are when voltage troubleshooting -- not whether the switch is open or closed. This article will cover trouble-shooting the power consuming device or load.
Many times service technicians will ...
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