WASTEWATER
By Rick Lallish
When connecting a pump and a motor, what are the two types of misalignment?
A. Polarity and conduction
B. Linear and polar
C. Parallel and angular
D. Vertical and horizontal
Answer: C. Proper alignment of pumps to motors is a critical concern. Misalignment will cause premature pump or motor failure. It is a frequent cause of vibration, and it may cause catastrophic related failures, such as broken shafts. Parallel alignment occurs when the pump and motor shafts are parallel to each other. Angular alignment occurs when the centerlines are not parallel but form an angle. More information may be found in the OWP, California State
