In terms of efficient pump operation, proper maintenance of pumping systems remains essential, but new technologies offer more cost-controlling options than those installed 20 years ago. For years, the pump was overlooked as an opportunity to improve the performance and reliability of heating, ventilation and air conditioning (HVAC) systems. System operators relied on old, but reliable practices. Building designers used best practices from years prior. When pumps failed, technicians simply replaced them with new ones with the same characteristics. Things are changing rapidly. Manufacturers have made improvements in designs and construction materials and many advancements in HVAC operations are being applied to pumps and their operations. Levels of operating efficiency are reaching levels unheard of even 10 years ago. System performance is also improving with an increase in reliability and a reduction of maintenance requirements. Here are more key questions and answers about how variable frequency drives (VFDs) relate to pumping systems today.
