Controlling pumps with standard cable-suspended float switch can be challenging. You need at least two float switches and a controller to manage the logic. Securing them to conduit to prevent tangling is necessary, and their reliability is often limited, with an expected lifespan of only two to three years.
Why Choose the Kari Float Switch
The Kari Float Switch offers a superior alternative. It features up to four switch points in a single float, built-in hysteresis to handle logic, and doesn’t require conduit securing since only one switch is usually sufficient. To demonstrate their durability, some Kari Float Switches have been in service for over 20 years.
These float switches are user-friendly. They require a simple weight to act as an anchor point, which can be adjusted to lengthen the distance between switch points. Here’s a comprehensive guide to help you install your Kari Float Switch for both empty and fill control applications.
Installation Guide for Normally Open Kari Float Switch
Model Assumption: KA-3H (Controls emptying of a well or tank with a high alarm)
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Step 1: Define Your Low Point
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Begin by establishing the lowest point to ensure the level never drops below the required Net Positive Suction Head (NPSH) for your pump. This is crucial as NPSH represents the suction pressure needed to avoid cavitation and other issues. For assistance in calculating NPSH, feel free to contact us.
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Step 2: Mount The Float Switch
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Secure the cable above the well or tank with a clip or mounting bracket, ensuring the float hangs at the correct position (ground zero).
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Step 3: Adjust Your Weight
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Set the weight to determine the highest point’s distance from ground zero. Adjust using the same method as in Step 3 for empty control, but think in reverse to prevent over-filling.
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- Step 4: Wiring
Install the float switch wiring to your waterproof enclosure and seal the cable entrance with a cable gland. Refer to the user manual or our float switch wiring guide for specific wiring instructions.
Advantages of Kari Float Switches
Kari Float Switches eliminate the need for multiple float switches in a single well or tank and simplify installation by avoiding tangling issues. The built-in hysteresis can even eliminate the need for a controller in backup pump control applications. There’s no other product on the market like it.
For any assistance with float switch installation or selecting the correct device for your application, please contact us. We’re here to help!
WRITTEN BY
Sami T.
Sami Thompson is APG’s Marketing Technical Writer and has been with the company since 2022. With a master’s degree in English from Utah State University and a 40-page thesis publication under her belt, Sami has a demonstrated strong writing background. In her free time, Sami enjoys reading and birdwatching.