Most problems with single-phase motors involve the centrifugal switch, thermal switch, or capacitor(s). If the problem is in the centrifugal switch, thermal switch, or capacitor, the motor is usually serviced and repaired. However, if the motor is more than 10 years old and less than 1 HP, the motor is usually replaced. If the motor is less than 1/8 HP, it is almost always replaced.
Troubleshooting resources
When your goal is to keep systems up and running, time is of the essence when something goes wrong. With the right know-how and tools, you can identify the root cause of issues, make informed recommendations and decisions, and verify fixes. These articles, videos, and webinars provide application-specific guidance to solve common equipment problems. In addition, case studies from your industry cohorts share how they solved some of these problems.
Recent stories
The electrical power issues that most frequently affect industrial plants include voltage sags and swells, harmonics, transients, and voltage and current unbalance.
With the push to energy independence and renewable energy sources, HVAC technicians need to know how to troubleshoot photovoltaic systems
Testing medical gases and piping systems in healthcare facilities and hospitals presents multiple challenges for maintenance teams. Learn why efficient leak detection is critical.
Find out how air leak detection equipment prevents downtime for a 150,000 square foot plant that runs approximately 400 tools on compressed air, produced by a 200-horsepower compressor.
The safety rated Fluke T+Pro gets field-tested by non-electricians. Larger buttons for gloved hands and a battery life indicator helped to make the transition from the old solenoid-based testers to the T+Pro much easier.
For three years in a row, a particularly large three-phase motor would fail twice a year. The facility maintenance manager called in both the electrical contractor and the motor manufacturer, who pointed fingers at each other but failed to resolve anything on site.
Auditing power quality to detect harmonics, by utility in India using Fluke Series II Power Quality and Energy Analyzer
- HVACR mechanics rarely rely on a single test to pass or fail a function or process. As they walk up to a condensing unit, they listen, they wave their hand over the condenser discharge air, and then they grab the suction line, the liquid line, and the discharge line (and wish they hadn't done that). All of this before they even open their tool box.
This how-to guide explains why and how to conduct a duct traverse, how to insert the measuring device and a step-by-step process of taking the measurements. Tips and additional resources are included.
- The 975 gathers ten fundamental IAQ parameters: Temperature, Humidity, Dew Point Temperature, Web Bulb Temperature, Carbon Dioxide, Carbon Monoxide, Air Velocity, Air Volume, and Percentage of Outdoor Air (calculated from temperature or CO2). This application note reviews those parameters and the associated functions on the 975. For more detailed information, see other app notes from the Fluke HVAC/IAQ library.
Learn the basic measurements of voltage and current with the Fluke 345. Get familier with the waveform view, harmonics, power measurements, inrush current and logging.
Monitoring three-phase power quality is a must. Whether you troubleshoot mysterious electrical problems or provide additional services to a client, it is three-phase power that is provided to commercial and industrial customers and three-phase power that is distributed throughout a facility.
Troubleshooting the most common power quality problems—voltage distortion and harmonics. Tools needed, types of problems
This article demonstrates how to detect the 13 most common causes of winding insulation and bearing failure in advance.
Even the smallest air leaks can compound product and energy waste and lost production time—especially for a production line that cannot function without compressed air to run its tools and processes.
What if there were a leak detection technology that could pinpoint the precise location of a leak from up to 50 meters away? The Fluke ii900 Sonic Industrial Imager, a “gamechanger” in the pursuit of finding compressed air leaks.
How to measure output voltage from a VFD to a motor
