Quick Answer
To evaluate the performance of your first flush diverter, check for proper installation, verify the correct flow rate, and inspect for any blockages or leaks. A well-functioning first flush diverter should divert the initial 10-20 gallons of water from the roof, ensuring clean water collection.
Inspecting the Diverter
Inspecting your first flush diverter is crucial to its performance. Check if the diverter is installed at a slight angle (about 1-2 degrees) to ensure proper water flow. Also, verify that the diverter’s outlet is at least 6-8 inches above the roof’s surface to prevent back-siphoning and contamination. Look for any signs of wear, damage, or blockages in the diverter and its components.
Flow Rate Verification
To verify the correct flow rate, use a flow meter or a measuring jug to measure the water flow through the diverter. Typically, a first flush diverter should allow a flow rate of at least 2-3 gallons per minute (GPM) to effectively divert the initial contaminated water. If the flow rate is too low, it may not be able to divert enough water, compromising the water quality in your collection tank.
Maintenance and Troubleshooting
Regular maintenance is essential to ensure the optimal performance of your first flush diverter. Check for any blockages or debris in the diverter and its components, and clean them out as needed. If you notice any issues with the diverter’s performance, such as poor flow rates or leaks, troubleshoot the problem by inspecting the installation, checking for kinking or damage, and adjusting or replacing the diverter as necessary.
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