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3. If influent turbidity is too high (meaning it is at least 10 NTU more than the target turbidity max), use a 1L plastic container to scoop out some water from the raw water bucket. This water will automatically be replaced by clean tap water to keep the volume constant and you should see the turbidity go down.
4. If the alum pump is not running at loading state, first ask yourself if this is the first cycle. If it is the first cycle, then this is normal because the alum dose is set to be zero at the first replication. If it's not the first cycle, go to settling state and then click loading state to see if the coagulant dose incrementally increases. If there is an increase, then the valve (between the rapid mixer and raw water pump) may be mistakenly closed. If it is not, then check if the set points are set correctly by locating the set points at rule editor to ensure the variables match the code. Process Controller Set Points used to control the experimental apparatus.
5. If water is filling up the flow accumulator, check the cap of the accumulator to make sure it's tight.
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Problems with Process Controller
1. If you turn on all the switches, and none of the green indicator lights on Process Controller are on, that means you are not connecting with the right server or the server may have crashed. Check the main server to make sure it is functioning properly and check the data server on Process Controller (should be "aguadata.cee.Cornell.edu"). When you're operating from one state, sometimes nothing is shown on the "current state" and the "state list" is not shown at "rules and states" at the next state. When this happens you need to reload the method file and save it in your experiment folder.
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