Nelsen NRO ROC2HE-UL
System Controller Documentation
Systems w/CPU-4 Control Board
Manufactured after March 2020
Since 1954
Page 1: ...Nelsen NRO ROC2HE UL System Controller Documentation Systems w CPU 4 Control Board Manufactured after March 2020 Since 1954...
Page 2: ......
Page 3: ...Controller Detail TB 1 6 Conductivity Probe Installation Figure 5 7 Installation Instructions 7 Controller Programming Accessing Hidden Menus Figure 6 8 System Start up w Permeate Flush 8 Controller...
Page 4: ...0 6000 s standard sensor CP 1 K 75 Output Circuit Ratings Feed Solenoid 1A Voltage is the same as motor supply voltage Flush Solenoid 1A Voltage is the same as motor supply voltage Motor 1 0 HP 110 12...
Page 5: ...3 Figure 1 Simplified Schematic...
Page 6: ...ard CPU 4 Conductivity Probe Connections Display 4 line 20 character Clear concise feedback on the RO s status Alarm Display backlight flashes along with audible beeper to indicate alarm condition Key...
Page 7: ...5 Typical Configuration Permeate Conductivity Probe Shield White Black Cable to Terminal Board Figure 3 Controller Detail CPU 4 Typical Configuration...
Page 8: ...6 Figure 4 Controller Detail Terminal Board TB 1 See Fig 1 for schematic...
Page 9: ...the System On Off switch to turn the system ON 10 Program Mode 2 is default See Table 2 which is a general purpose setting without a flush valve NOTE The Program Settings can be customized to suit the...
Page 10: ...ith the system on Press and Hold the Up and Down Arrows 2 With the Up and Down Arrows depressed Press the System On Off button This will switch to the Hidden Menus as shown above 3 If not already on t...
Page 11: ...op 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 coun...
Page 12: ...10 Figure 7 Controller Programming Menu Navigation...
Page 13: ...d xxx uS Line 3 Alarm SP xxx ppm or Alarm SP xxx uS Line 4 To Reset Push OFF ON Feed Conductivity Fault Feed conductivity is higher than the alarm set point Line 1 Service Fault Line 2 Feed TDS xxx pp...
Page 14: ...th a multi meter for correct on off operation Replace switch or level control if faulty 3 If someone connected 110v to the terminal strip connection for the high level shut off they could have fried t...
Page 15: ...facturer s warranties on the Product or any parts therein subject to the conditions and exclusions in the manufacturer s warranty Buyer s exclusive remedy under such third party manufacturer s warrant...
Page 16: ...ATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE NO REPRESENTATIONS OR WARRANTIES AT ANY TIME MADE BY ANY EMPLOYEE AGENT OR REPRESENTATIVE OF NELSEN SHALL BE EFFECT...