More in Motors / Drives

  • Mar 8, 2016

    Giving Back: Making the HVAC Industry—and World—a Better Place

    When I became involved in HVAC in the late 1990s, I was pleasantly surprised to learn our industry, as competitive—some might even say ruthless or cutthroat—as it is, is actually quite generous when it comes to giving back to our communities and professions....More
  • Jun 24, 2015

    HVAC and Electric Motors 1

    A multistory commercial office building has a relatively new 1.5-ton split system that cools the elevator equipment room. When the building’s maintenance staff discovered the system was not running and the temperature in the equipment room was abnormally high, an A/C service tech was dispatched. The service tech was unable to find any malfunction in the equipment, but when he measured the voltage on the single-phase circuit serving the condenser and air-handler units, it was 197 with no major loads....More
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