How do float switches work?
How do float switches work?
A float switch works to detect the level of liquid in a tank by using a float, magnet, and reed switch system that automatically opens and closes when water levels rise and fall inside the tank. Once the dry contacts are opened or closed, they will send an electrical signal to set off a water level alarm.
Why does my pond pump keep floating?
First, check to see if there is anything keeping water from getting to the pump, be it a large rock or debris, leaves, a clogged skimmer net or opening, a jammed skimmer flap, or just a skimmer mat that has gone too long between cleanings. All of these things can keep water away from the intake on your pump.
What is a normally open float switch?
Normally Open simply means the contacts of the switch are open when the float is in the hanging down position (or vertical). In pumping applications this normally means the pump is off when the float is hanging down. Normally open float switches are available in Narrow Angle Float Switches or Wide Angle Float Switches.
What wire goes where for the float switch?
In both schematics, terminal 1 in the control circuitry represents the landing point for the float switch’s (+) wire, and terminal 2 for the (-) wire. So there we have it. A two-wire float switch that can easily be used for turning a pump on or off.
How does a float switch work?
How Float Switches Work. The purpose of a float switch is to open or close a circuit as the level of a liquid rises or falls. Most float switches are “normally closed,” meaning the two wires coming from the top of the switch complete a circuit when the float is at its low point, resting on its bottom clip (for example, when a tank is dry).
What causes float switches to fail?
When it comes to the failure of this type of float switch, it generally comes down to certain common causes. These causes include the incorrect configuration of the switch, poor maintenance, using a float switch that is not designed for the purpose or using a float switch that is not properly rated for the application.
