Taco 00R pumps have 3-speeds which each have a separate wineding. Winedings are what connect the switch to the pump motor, and can break over time due to stress, power surges, or old age. If one of the winedings on your Taco 00R dies, all you need to do is click the pump to another speed and it will continue working without skipping a beat.
Taco Pumps and Taco 3-Speed Pumps can be found at www.supplyhouse.com
