What does "taking care of the system" involve? The number 1 reason for motor failures from what I have experienced is excessive over heating caused by jammed impellers and shafts. Motors do last a very long time but in a circulator they run as part of a pump mechanism during operation which can be compromised by the following: 1) bending the stirring shaft 2) taking the skirt off and running the unit where objects gets jammed into the impellers 3) dropping the entire system in water 4) letting hair, strands of debris, organics growth that collect over time that can build to the point it jams the entire mechanism. <-- this actually happens