Mastering Solenoids in Your NutraDrip Irrigation System

July 24, 2024

At NutraDrip, we strive to provide you with the best tools and knowledge to optimize your irrigation system. Today, we’re going to dive into the essential component that connects your controller to your drip irrigation system: the solenoid. Understanding how solenoids work can help you manage your irrigation more effectively and ensure your crops receive the right amount of water. 

What is a Solenoid? 

A solenoid is an electric device that connects your controller to your drip irrigation system. When an electric signal is sent via a wire or radio, it opens or closes the solenoid, which in turn opens or closes the valve. This process allows water to either pass through or stop passing through a particular valve or zone. 

Types of Solenoids 

We primarily use two types of solenoids at NutraDrip: DC latching solenoids and AC solenoids. 

DC Latching Solenoid.

  • Power Source: DC power 

  • Operation: The controller sends a burst of DC power to the solenoid, which then latches in its position (open or closed). It requires another burst of power with reverse polarity to change positions. 

  • Wiring: Features a white and black wire, where polarity in one direction opens the valve and the opposite polarity closes it. 

  • Energy Efficiency: Uses very little power, making it ideal for battery or small solar panel operations. 

AC Solenoids 

AC Solenoid.

  • Power Source: 24-volt AC power 

  • Operation: Receives continuous 24-volt power to stay open. When the power stops, the solenoid closes. 

  • Wiring: Typically has two black wires. 

DeRote Solenoids 

DeRote Solenoid.

  • Usage: Commonly found in backflush filters. 

  • Operation: Similar principles apply as with the other solenoids. 

How Solenoids Work 

Both AC and DC solenoids feature an open, close, and auto position on the top.   

 

Solenoid controller.

 

  • Auto Position: Allows the controller to open and close the valve. 

  • Open Position: Forces the valve open, overriding the controller. 

  • Close Position: Forces the valve closed, overriding the controller. 

Maintenance and Troubleshooting 

Understanding the operation of the solenoids is crucial for troubleshooting and maintenance. Here are some key points: 

  • Manual Operation: The knob on the solenoid changes which port is open or closed, directing water flow. 

  • Correct Installation: Ensure that the ports labeled ‘command,’ ‘A,’ and ‘B’ are correctly positioned during installation. Incorrect installation can alter the solenoid’s operation.  

  • When servicing or troubleshooting a solenoid, it’s crucial to pay attention to the labeled ports on the bottom, ‘A,’ and ‘B.’ If you need to replace or adjust a solenoid, ensure it is reassembled in the exact orientation.  

For instance, if you unbolt a solenoid and remove the screws, reversing the body can significantly alter its operation. Therefore, the mounting direction is essential for the solenoid’s proper functioning.

  • Diagrams and Tools: Utilize connection diagrams and mobile apps to troubleshoot and understand solenoid configurations. 

  • Netafim Control Valves App 

  • Steps to access more info in app: 

  • Click “Technical Guide” 

  • Then “Control Loop Accessories” 

  • And then “Solenoids”

Conclusion 

At NutraDrip, our goal is to empower you with the knowledge to keep your irrigation system running smoothly. Proper understanding and maintenance of solenoids can prevent water wastage and ensure efficient irrigation. If you have any questions or need further assistance, don’t hesitate to contact our team. We’re here to help you maximize the efficiency of your NutraDrip irrigation system. 

Stay tuned for more tips and insights to help you get the most out of your irrigation setup! 

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