This test, prior to covering the orifices, is to check actual squirt height against the expected squirt height. the procedure is as follows:
1. Close all balancing/throttling valves on each lateral at the distribution manifold.
2. Use hose to fill dosing tank and check the rise of the Flout dosing head in the tank. Make sure it is clear of any dose monitoring devices in the tank.
3. Observe the dosing head flood and sink as it loses buoyancy. Remove hose. Wait a few minutes for the transport pipe to fully flood from the balancing valves back to the dosing tank. Replace access lid on dosing tank.
4. Open all balancing valves together and observe rate of generation of the squirt for the duration of the cycle and measure height. This will be the best performance of the system. If inadequate, check vent bypass around septic filter or re-test with lid off the dosing tank. If the squirt height needs to be reduced, throttle each valve until all laterals have close to the same desired squirt height.
5. Allow the tank to refill and discharge normally. Observe time taken to reach steady state squirt height and measure height achieved.
6. Compare final squirt height with the pre-flooded squirt height. Any difference would indicate not all trapped air has purged out. This should be acceptable if the resultant squirt height is adequate. If not, check venting points on slope near dosing tank outlet, and also (if applicable) down slope at end of a shallow slope run out.