Last week, I defined ECM motors and how they differ from standard PSC and induction motors. We recently had a customer call who was very …
What is an ECM Pump? – Part 1
ECM pumps and Smart pumps are marketing terms being thrown around to indicate a highly efficient variable speed pump that saves more money than you …
How to Pick a HVAC Centrifugal Pump Part 10: HVAC Pump using a Variable Frequency Drive
The last R L Deppmann Monday Morning Minutes described the recommended limitations when over speeding a HVAC pump with a Variable Frequency Drive (VFD). Today …
Solving Oversized Pumping Problems
Printer Friendly (PDF) The last two weeks we used the Pump Affinity Laws and the ITT Bell and Gossett System Syzer® to either trim the …