NELSEN WATER NRO ROC-3HE, Manual

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Appendix A - Controller Programming: Parameters Explained (cont.)
Flush Behavior Value Range Example
Time from last flush before Flush on Shutdown Minutes 15
Minimum operation before Flush on Shutdown Minutes 60
Flush duration on Shutdown Seconds 60
Periodic Flush interval Minutes 60
Periodic Flush duration Seconds 30
Unit Idle Flush interval * Minutes 0
The Unit Idle Flush Interval sets a time after which the RO will start-up and run in the flush mode. This is disabled
by default because of the danger of over-flowing a tank if not properly implemented. It is intended for environments
where leaving the RO idle for long periods would invite bio-fouling. (0)=disabled
Unit Idle Flush duration * Seconds 0
Sets the duration of the Idle Flush. (0)=disabled
Timed Manual Run - Duration of Manual Run Minutes 5
Timed Manual Flush - Duration of Manual Flush Minutes 5
Conductivity Probe Sample Rate Seconds 2
Conductivity Shutdown * (0)=disabled Minutes 0
Controller Fault Condition Displays
Below are examples and explanations of the displays which accompany the fault conditions possible in
the ROC-3. Fault conditions always indicated a problem of some sort which requires corrective action. the
displays provide sufficient information to recognize the source of the fault and the required corrective action.
Low Pressure Fault: (System is responding to low pressure condition per system settings)
Line 1 “Service Fault”
Line 2 “Low Feed Pressure”
Line 3
Line 4 “Restart in MM:SS”
Pre Treat Fault: (Pretreat Switch is closed indicating problem with pretreat system).
Line 1 “Service Fault”
Line 2 “Pretreat”
Line 3
Line 4 “Check Pretreat Sys.”