Because they provide the ability to precisely match cooling capacity to load, variable frequency drives (VFDs) are widely used in mission-critical data center applications. But, if the motors controlled by […]
At a paper mill in the Midwest, every new motor controlled by a variable frequency drive (VFD) is tested, and if shaft voltages are found, the motor must be equipped […]
It seemed as though nothing could stop the squealing. Not that the Monarch Cement Company’s huge ball mill wasn’t already loud. Powered by a 5,000-HP motor, it pulverizes 100 tons […]
Dan Biby learned it all the hard way. An ordeal concerning several inverter-controlled pump motors with bearing damage made him a believer in the need for shaft grounding. Killer Shaft […]
A preventive maintenance plan that reduces the total life-cycle cost of operations in a prominent building at the heart of New York City serves as a good example of how […]
A SINGLE SPECK OF DUST could spoil a whole experiment at Purdue University’s new Birck Nanotechnology Center. To minimize the likelihood of such a scenario, the building’s HVAC system has […]
A new preventive maintenance program at a leading New England Ivy League university demonstrates how the push for more sustainable “green” building management has led to a growing awareness of […]
Despite the fact that about 70% of factories use them, air compressors are one of the most expensive and least efficient sources of energy. Many times, the energy bills exceed […]
An energy service company that refurbishes catalytic converters for power plants previously used two 29 mm peristaltic pumps to move lime slurry at 20% to 30% concentration for each of […]
When it comes to downtime, the primary focus usually centers not around why the problem occured, but on how the problem will be fixed in order to get people and […]
In 2006, Amtrak instituted a program that coupled Reliability Centered Maintenance (RCM) with Root Cause Analysis (RCA) to increase rolling stock reliability. The RCM-RCA program at Amtrak combined features of […]