A sump pump float switch is a sort of precaution to avert floods or dangers that may occur in case of pump errors.
When the water level drops the float switch is available to signal the pump to stop. Thereby it prevents damage that dry runs of the pump can cause.
It is a round plastic body-shaped device that floats and moves with the water surface
How it Works
A float switch has a circuit inside which is connected to the pump cable. When the water level rises the device rises along with the water. Upon reaching a certain set high point, the circuit completes and powers on the pump to discharge water.
When water levels drop, it also moves drops with the water level until the minimum set point. At this point, the switch is broken and the pump stops pumping water.
The process goes on repeatedly.
Types of Sump Pumps
Float switches vary according to their design, function, and application.
Pump Up Float Switch
They are used in water pumps that supply water to storage tanks. The power circuits run through the float which is positioned at a submerged position near the top of the tank then to the pump.
The switch floats and the circuit opens when the water level reaches the top of the tank thus closing the tank and preventing overflows.
Pump Down Float Switch
Pump-down float switch circuits tend to remain open mostly since they work with pumps that empty storage tanks.
When the water level reaches the lowest set point, the switch turns off the pump. Once the water reaches the highest point, the switch closes and turns on the pump to empty the tank.
Tethered Float Switch
It contains a floating device that rises and lowers depending on the water level. The switch closes when the water level reaches a certain point and triggers the pump to turn on or off as per the application.
Vertical Float Switch
Suitable for shallow water storage points.
It contains a floating system that connects to the switch through a rod.
The floaters rise with the water levels causing the rod to push a lever that controls the switch.
Diaphragm Float Switch
They rely on pressure to operate the switches. The rise in water level directly results in a pressure increase and causes the diaphragm to act on the switch.
Electronic Float Switch
Electronic Float switches are the most reliable types with nearly no moving parts. The switch has mechanisms at which the pump turns on.
It has sensors that detect the presence of water in the tank or well and signals the pump to start or stop.
Common Causes of a Pump Float Switch
Interference or cases where the float switch is trapped between the basin wall and the pump. It may fail to rise or drop.
Wear and tear due to frequent use of the float switch to control the flow of water.
A power surge or failure causes the float switch to fail.
The float switches may also fail to operate due to old age or lifespan
Conditions of Float Switch Failure
Potential flooding due to failure of the float switch to turn on the pump.
Continuous runs of the pump and potential motor damage when the float switch fails to rise or drop.
When the switch is blocked by debris and it fails to turn on the pump.
Tips to Avoid Float Switch Failure
- Regular maintenance of the float switch
- Always check the pump and float switch to ensure they are working properly.
- Cleaning the debris
- Remove any material, rocks, stones or trees that may block the float switch.
- Installing a backup system
- It is good to install a battery pump to boost the water supply during cases of power failure.
- Testing the float switch
- Pour water into the tank to test whether the float switch works.
- Ensure you hire professional technicians to install your float switch.
- We have skilled technicians ready to transform your water supply system into a safe environment.
Need a Float Switch?
Aqua Hub Kenya is the ideal quality pump float switch supplier in Kenya. We have suitable sizes for your pump needs.
Call 0790719020
