Troubleshooting Your Garden Reticulation System: A Comprehensive Guide

If your garden reticulation system is only dribbling instead of providing the usual strong flow, there are several common causes worth checking. Understanding these issues can help you restore your system to optimal performance.

Common Causes of Reduced Water Flow

1. Water Supply Issue

• The mains tap might not be fully open.

• The Water Corporation or local supply could be carrying out works, leading to lowered pressure.

• A partially closed isolation valve can restrict flow.

  
  

2. Solenoid Valve Problem

• The solenoid may be stuck partially open or blocked with grit.

• A failing solenoid coil may not be lifting the diaphragm properly.

• Sometimes, a damaged diaphragm inside the valve allows only a trickle through.

  
  

3. Blockages

• The filter screen at the master solenoid, inline filter, or pump strainer could be clogged.

• Bore water systems often build up iron bacteria or sand, which can plug nozzles and pipework.

• Roots or debris inside the lateral lines can significantly reduce flow.

  
  

4. Pump or Bore Issues (if not mains)

• The pump may have lost prime.

• The impeller may be worn or blocked.

• Bore yield could have dropped, such as due to a clogged screen.

  
  

5. Broken or Leaking Pipe

• A split or leaking pipe underground can dump most of the pressure before it reaches the sprinklers.

  
  

6. Reticulation Controller Settings

• If the issue occurs only on one station or zone, that solenoid or line is likely the problem.

• If all stations are affected, it’s more likely a supply, master valve, or pump issue.

  
  

Quick Checks You Can Do

• Run different zones — do they all dribble or just one?

• Open a manual flush cap at the solenoid valve — do you get good flow?

• Check the filter screens at the valves and sprinklers.

• Inspect your pump (if you’re on a bore) for prime and pressure.

  
  

Additional Troubleshooting Steps

Inspecting the Solenoid Valve

The solenoid valve plays a crucial role in regulating water flow. If you're experiencing issues, it's essential to inspect it closely. Look for any signs of wear or blockage. Cleaning or replacing the solenoid may resolve the problem.

Checking for Blockages

Blockages can occur at various points in your system. Make sure to check the filter screens and any inline filters. If you notice a buildup of debris, clean them thoroughly. This simple step can often restore proper flow.

Evaluating Pump Performance

If your system relies on a pump, ensure it's functioning correctly. Check for any signs of wear or damage. A well-maintained pump is vital for optimal water delivery.

Understanding Bore Water Quality

Bore water can sometimes introduce contaminants that affect your system. Regular testing of bore water quality can help identify issues early. If you notice changes in water quality, consider consulting a professional for advice.

Regular Maintenance

Regular maintenance is key to preventing issues in your reticulation system. Schedule routine checks to ensure all components are functioning correctly. This proactive approach can save you time and money in the long run.

Conclusion

By understanding the common causes of reduced water flow in your garden reticulation system, you can take the necessary steps to troubleshoot and resolve these issues. Regular inspections and maintenance will ensure your system operates efficiently, providing the lush garden you desire.

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