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  Figure 5 - Conductivity Probe Installation

1   Drill the enclosure as needed and install liquid-

tight fittings for the wiring.

   

 

NOTE: 

 

The Controller can be ordered 

pre-drilled or with fittings installed, or with 

fittings and wiring installed. Contact Nelsen 

Corporation for details.

2   Mount the enclosure in the desired location on 

the RO system.

3   Bring the wires from the peripheral devices 

into the enclosure and connect them to the 

appropriate terminals. (See Figure 1, Figure 3 and 

Figure 4.)

4   Install the conductivity cell in the permeate line. 

(See Figure 5 for conductivity cell installation 

instructions.)

7   Connect the conductivity cell to the terminals on 

the CPU Board. (See Figure 3)

8   Provide power to the RO system.
9   Press 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 specific needs 

of an OEM and pre-programmed at the 

factory with your settings. Contact Nelsen 

Corporation for details.

11   Make any other changes you want to the 

settings. Press System On/Off to save your 

changes.

12  The controller is now ready for service.

   

 

NOTE:

  

YOU MUST REMOVE THE JUMPER 

WIRE FROM E23 TO E24

 if using a single 

point High Level RO water shut off float 

switch control and connect the float switch 

wires to terminals E23 and E24 (See Fig. 4).  

If you are using a piggyback float plug leave 

the jumper wire in place.

 Installation

Install the Conductivity Probe in the “Run” 

of a Tee or equivalent location. Orient the 

probe so that air can not become trapped in 

the area near the probe.

FL

OW

FLOW

Conductivity 
Probe

Содержание NRO ROC2HE-UL

Страница 1: ...Nelsen NRO ROC2HE UL System Controller Documentation Systems w CPU 4 Control Board Manufactured after March 2020 Since 1954...

Страница 2: ......

Страница 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...

Страница 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...

Страница 5: ...3 Figure 1 Simplified Schematic...

Страница 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...

Страница 7: ...5 Typical Configuration Permeate Conductivity Probe Shield White Black Cable to Terminal Board Figure 3 Controller Detail CPU 4 Typical Configuration...

Страница 8: ...6 Figure 4 Controller Detail Terminal Board TB 1 See Fig 1 for schematic...

Страница 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...

Страница 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...

Страница 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...

Страница 12: ...10 Figure 7 Controller Programming Menu Navigation...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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