A Mainline represents the water delivery pipelines that supply water from the Water Source to the valve manifolds. Only Mainlines can be assigned managed Points of Connection (POC), i.e., flow sensors, master valves (either NO or NC), and an optional pump start. Mainlines can have one or more managed POCs including looped POCs. Mainlines cannot have sub-Mainlines, but can have sub-Flow Zones.
1. Click the OptiFlow tab, and then click the Configure sub-tab.
2. Select the appropriate site from the drop-down list.
3. In the Hydraulic Tree list, find the Water Source that you want to add a Mainline to.
4. Click the + symbol next to the desired Water Source. Add New Pipe displays.
5. In the Type field, click the drop-down list, and then select Mainline.
6. In the Name field, type a descriptive name for the Mainline.
7. (Optional) You can use the fields in the Max GPM Calculator box to help estimate the maximum flow rate from the Mainline:
- In the Material field, click the drop-down arrow and select the pipe material from the list.
- In the Size field, click the drop-down arrow and select the pipe size from the list.
- In the Velocity field, type the designed water velocity (typically 5 feet per second).
- Click Apply.
- In the Mainline Break Velocity, type the velocity that would indicate a break in this Mainline.
- Click Apply.
8. Enter a user-defined value in the Max GPM field or click the Apply button to use the recommended value from the Max GPM Calculator.
9. Enter a value in the Mainline Break Threshold field or click the Apply button to use the recommended value from the Max GPM Calculator.
Note
The Max GPM cannot exceed the Water Source Max GPM.
10. Click Next. The Flow Alerts settings display.
11. Review the default values in the Flow Alert settings, and make changes as needed.
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Mainline Break: If the flow rate in a Mainline exceeds the mainline break threshold that was set in the Pipe Details section, the controller sends an alert, and shuts down irrigation after the amount of time indicated in the delay field.
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No Flow: You can configure the controller to send an alert or ignore the fact that there is no detected flow in the Mainline. Set the desired no flow threshold and the amount of delay time.
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Advanced Leak: You can configure the controller to send an alert and close a normally open master valve if, during non-irrigation, the mainline flow rate exceeds the leak detect threshold for the user specified period of time. The controller will immediately close the master valve if the flow rate from the leak exceeds the catastrophic leak threshold.
12. Assign a POC or click Save.