9
The controller has 4 separate user-selectable sets of settings for configuring the RO. The factory default
settings are shown below. The settings are identical except for variations in the flush behavior.
•
Program 1
,
High Pressure flush
•
Program 2
,
No Flush
•
Program 3
,
Permeate Flush, (low pressure, inlet valve closed)
•
Program 4
,
Low Pressure, feed water flush
• See the previous page for instructions on how to access the menu for selecting these programs.
• See Appendix A for a detailed explanation of the Parameters and their affect on the RO’s operation.
Table 2 - Controller Programming:
ROC-2 Program Selections
Parameter
Value
Program 1 Program 2 Program 3 Program 4
Tank Level Switch delay (actuation and de-actuation) Seconds
2 2 2 2
Pressure Switch delay (actuation and de-actuation)
Seconds
2 2 2 2
Pretreat Switch delay (actuation and de-actuation)
Seconds
2
2
2
2
Pump start delay
Seconds
10
10
10
10
Inlet Solenid stop delay
Seconds
1
1
1
1
Pump start retry interval (restart delay after LP fault) Seconds
60
60
60
60
Low pressure fault shutdown, # of faults
Faults
5
5
5
5
Low pressure fault shutdown, time period to count faults
Minutes
10
10
10
10
Low pressure fault shutdown, reset after shutdown
Minutes
60
60
60
60
Low pressure timeout fault
Seconds
60 60 60 60
Flush Behavior
Extra
Maximum
Normal
No Flush
Flush
Flush
Startup Flush: Minutes from last flush
Minutes
0
0
0
0
Startup Flush: Duration
Seconds
0
0
0
30
Periodic Flush: Interval
Minutes
60
0
0
0
Periodic Flush: Duration
Seconds
30
0
0
0
Shutdown Flush: Time from last flush
Minutes
10
0
0
0
Shutdown Flush: Minumum operation
Minutes
30
0
0
0
Shutdown Flush: Duration
Seconds
60
0
60
60
Idle Flush: Interval *
Minutes
0
0
0
0
Idle Flush: Duration *
Seconds
0
0
0
0
Timed Manual Run
Minutes
5
5
5
5
Timed Manual Flush
Minutes
5
0
5
5
* These features are disabled by default due to the potential for confusion on the part of end-users in the field.
They can be enabled when needed via the OEM PC programming interface which allows changes to all of
the values shown above.
Summary of Contents for NRO ROC-3HE
Page 1: ...Nelsen NRO ROC 3HE System Controller Documentation Systems with 3 hp Motors and Above...
Page 4: ...2 Figure 1 Simplified Schematic...
Page 5: ...3 Figure 1 1 Field Wiring Diagram...
Page 7: ...5 Typical Configuration Figure 3 Controller Detail CPU 4 Typical Configuration...
Page 8: ...6 Figure 4 Controller Detail Terminal Board TB 1 See Fig 1 for schematic...
