With that said, no industrial pump, no matter how well-made it is, is designed to last forever. Let's keep these differences in mind as we review each mechanical float switch type with their pros and cons.Industrial pumps come in all types and designs. Run time for the vertical float is preset during manufacturing. The tether can be lengthened or shortened to increase or decrease the run time. The only mechanical float that allows for run time adjustment is the tether float. Run time is something we get a lot of phone calls about because home owners want to change the pump run time. For the vertical switch, the switch is located in the pump head. As for the mechanical tether switch, it is located in the float. The location of the switch varies depending on the mechanical switch type. The electrical cord configuration for the vertical float is such that the electrical positive and negative circuit flows through the cord to the pump head where the switch is located. The electrical cord configuration is such that the electricity flows through the tether cord. These three float switch types can be easily identified by three characteristics: 1) The electrical cord configuration 2) The location of the switch 3) The presence of a float and the ability to change the pump run time. The mechanical float switch is made of two different float types: 1) The mechanical tether 2) The mechanical vertical. These float switch types are not electronic switch types. The mechanical float switch includes two float switch types: 1) The tether float also known as the variable level float switch 2) The vertical float known as either the master magnetic or the 2-pole snap action float switch or the 2-pole enhanced float switch. Zoeller is one of those companies that makes replacement float switch parts readily available that are easy to replace, so investing in a Zoeller is wise because the pump frame and motor are built to last a long time, more than twenty years. Both of these options have features that will greatly increase the float switch longevity. The enhanced snap action float switch has great features and the Zoeller floatless switch when available will have great potential. However, owning a pump with a long lasting float switch is ideal. Float switches are always the weakest part of any sump pump and no float switch lasts forever. Understanding float switch types aids in choosing the best to protect the basement from flooding because of float switch failure. Models beginning with 'N' are non-automatic and can use the tether, vertical float switch or any other solid state float switch including an electronic switch. Models without a prefix M are Zoeller pumps made by Zoeller in Taiwan and they use a vertical float switch. The exception is Model 49 one-fourth horse power which uses the tether float switch. Models beginning with 'M' use the vertical float switch. So what switch types are used with what Zoeller Models? The easiest way to remember the switch type is by the Model prefix. It is important to note that not all switch types are available for all Zoeller pump product lines therefore it is important to notice the float switch type when reviewing a specific model. We explain and show how each float switch type works and identify their differences. Zoeller is currently working on an electronic no float switch option.Ĭonsidering this new potential switch option, Zoeller float switch types are newly classified as mechanical and electronic. Zoeller Sump Pump Float Switches are three types traditionally: the Tether, Vertical, and Variable Level.
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