Continuous Control

Pumping requirements vary from application to application—that’s a no-brainer—but it is easy

to overlook the fact that they also fluctuate within each unique application.

Many water and wastewater pump operators err on the side of running systems at full throttle day

in and day out to ensure adequate performance: a costly precaution considering the amount of

unnecessary power delivered. It is no wonder the equipment has earned a reputation as a top-tier

industry energy consumer.

Controlling pump motor speed in real time, ensuring that sufficient but not excessive power

is delivered, is now a real energy- and cost-saving opportunity. The ability to adjust the speed

of drives, for example, can yield a significant return on investment (primarily in the form of

reduced power bills and energy rebates), sometimes in a matter of months. Such technology

also helps minimize maintenance requirements and extends pump life by alleviating long-term

mechanical and electrical stress. More precise flow control and pump noise reduction are other

potential benefits.

If you think energy-efficient technology might complement your water or wastewater pumping

operations, crunch the numbers—taking into account pump size, load profile, friction and other

such factors—to determine whether a similar investment could be worthwhile.