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R&D Series Rotrol 2

1. Pressure sensor readings incorrect or not reading All pressure sensor readings require Dipswitch 1 to be turned ON up With Dipswitch 1 ON each sensor reading may be enabled disabled with its corresponding jumper J6 J7 J8 or J9 FEED PUMP PREFILTER DIFF and MEMBRANE DIFF respectively A sensor reading is disabled by plugging a shorting block onto both pins The absence of a shorting block or the shorting block plugged into 1 pin only will enable the reading If no pressure readings are present on the LCD display either Dipswitch 1 is OFF one or more pressure sensors or cable is bad or mis wired a TDS Conductivity Sensor is bad or the PC board is bad Assuming Dipswitch 1 is ON the problem may be isolated to a failed sensor or PC board by one of the following methods 44 Method 1 no DVM available Turn off the Power switch on the front panel and disconnect the red wires for both TDS Conductivity sensors and every pressure sensor except 1 at the terminal strips P5 and P7 Then place the shorting blocks across both pins of the corresponding nable jumpers J6 J9 for the disconnected sensors to disable the alarms for those sensors Turn the Power switch on and check the LCD display for a pressure reading from the sensor still connected to the terminal strip If a good reading is o
2. gS ae eee S 32 klow K ener e onmi ere eer er Briel nnt fe 34 Flow UE NU RECETA NER I I ars 34 PLOW Operateonic eh ear ERI Ue PU I IER 35 Erow AER TAE EAT EO Er iR RA RR RE EAM 35 pH MONITORING i Co ee eo m mmo tek eves eect m c or mum tas ee ew eee d Yom a 36 pH Sensor Eque ee Baas GE Me ERE es 36 pH Sensor Wirdngess4 e At ere act er ewe e vis etn 36 DH 2 up u i ae webs CT SIUE E EIS 36 pH FSS EPO Tine sede eres a e a eue ou e qe ive eie qe 377 pH Operati gaear d TA E me ae hee eee Een es 38 ORE MONTIDORING hve ter ere sie nein a ied cite ee Heres eee E eee 39 ORP SE BPO PTE Ss qwe are de eene ee Me ene le Renee ee be ae 39 ORP OPEGTAETON ek ee e Boa Sao ERE Be EUN ESSE EVER 39 ALARM DIVERT RELAY BOARD os ec ce wie e fee es we ae VU I Bele wee e 41 Stree ee ara ssepe Se 42 B iTteln ADS Sd Se are ee Sed Rue MEAS pa RISE NR Ere MR 42 Tools Test Equipt sarat ts EE RESTE SES 42 wis a Godel ewes 42
3. pH 6 2 If the optional pH sensor is installed the pH value is displayed 38PSI If the optional inlet pressure sensor is installed the inlet pressure is displayed If this sensor is not installed I will show on the display F 31PSI If the optional feed pressure sensor is installed the feed pressur is displayed If this sensor is not installed the display will show F OK or F LO depending on the status of the low pressure switch p 7PSI f the optional inlet and feed sensors are installed the differential pressure is shown Otherwise p PSI is displayed P 196PSI If the optional pump pressure sensor is installed the current pump pressure is displayed If this sensor is not installed the display will show P OK or P HI depending on the status of the high pressure switch C 178PSI If the optional concentrate pressure sensor is installed the current concentrate pressure is displayed If this sensor is not installed C is displayed Np 18PSI If the pump and concentrate sensors are installed the differential pressure across the membrane is shown Otherwise Np PSI is displayed 27 5 5 ZRCV 51 5 1 76 2448 0 1 6GPM TOTAL 1 8GPM 12846 Figure 11 Screen 3 If the optional flow metering is installed screen 3 shows
4. TDS Conductivity Cell Wiring For accurate TDS Conductivity readings the cell should be installed in a tee fitting where a continuous flow of water passes over the cell and no air can be trapped around the cell Refer to Figure 7 for example installation The permeate TDS Conductivity cell is connected with five wires to the plug in terminal strip P5 The color coded wires are connected to the group of terminals labeled P COND Each wire must connect to the terminal labeled with its color s notation i e connect the red wire to the terminal labeled RD black to BK etc see Figure 3 The optional feed TDS Conductivity cell is connected with five wires to the plug in terminal strip P7 The color coded wires are connected to the group of terminals labeled F COND Connect each wire to its corresponding color designated terminal as noted in Figure 3 Each TDS Conductivity cell generates a temperature output which may be displayed on the LCD display Jumper J13 selects the temperature sensor in ither the permeate or feed cell If jumper J13 is in the position labeled P the permeate temperature will be displayed If it is in position F the feed temperature will be displayed Analog Pressure Sensors The analog pressure sensors are connected to P5 Dip Switch 1 should be moved to the ON position to enable reading of the analog pressure sensors and the
5. HI MEMBR DIFF PRESS The membrane differential pressure setpoint has been exceeded LO PUMP PRESS The RO pump discharge pressure has dropped below the low pump pressure setpoint LO REJECTION The RO system percent rejection has dropped below the rejection setpoint HI PERM FLOW The permeate flow has exceeded the high permeate low setpoint LO PERM FLOW The permeate flow has dropped below the low permeate flow setpoint HI CNC FLOW The concentrate flow has exceeded the high concentrate flow setpoint LO CNC FLOW The concentrate flow has dropped below the low concentrate flow setpoint LO pH The pH has dropped below the low pH alarm setpoint HI pH The pH has exceeded the high pH alarm setpoint NOTE Warnings can be cleared by correcting the source of the warning or by changing the setpoint associated with the warning 29 FEED 1580 PERM 52 INLET 37 PUMP FEED 51 CONC 1 7 Figure 12 Startup Screen The startup screen can be utilized during initial system startup to display all of the sensor readings on 1 screen Pressing the Display key exits the Startup screen If a sensor is not installed the display for that sensor will show tg ERM of the display shows the TDS Conductivity values 1380 The feed wa
6. Alarm Output The alarm output available at P4 pin 14 01 is active whenever any alarm or shut down condition is active DS9 is lit whenever this output is active Divert Output The divert output available at P4 Pin 15 02 is activ whenever th TDS Conductivity reading has exceeded Setpoint 10 The RO unit does not need to be running for this output to be active DS10 is lit whenever this output is active 24 SCREEN DESCR PTIONS Screen 1 Screen 1 show The first lin RO OPERATING F 1590PPM F 31PSI P 52 P 196PSI ZREJ 97 7 68 F Figure 9 s the standard operating conditions for the RO unit e of screen 1 shows the status of the RO unit The following is a list of status messages with explanations RO OPERATING RO ON DELAY The RO unit is on and operating properly 0 The inlet solenoid is open and the number is the remaining delay in seconds before the RO pump starts RO OFF The RO pump is turned off with the RO pump switch TANK FULL 15 The RO pump is shutdown due to a tank full condition The number after tank ull is the delay in minutes pefore the RO starts after the tank full condition clears HIGH PUMP PRESS 60 The RO pump is shutdown due to a high pump discharge pressure condition The number is the amount of time in minutes befor th L
7. 17 STANDARD FUNCTIONS FUNCTION DESCRIPTION 1 Tank Full Override Allows the RO unit to be turned on when it is shut down due to a tank full condition When the override is initiated the RO unit will operate for the amount of time programmed in setpoint 26 2 Manual Flush Manually initiates a flush cycle 3 Startup Screen Enables special screen that shows all sensor readings FUNCTION OPERATION 1 Press the Function key 2 Press the number of the function you want to select 1 9 3 Press the Enter key to activate the function or Cancel to abort the function 18 DIPSW Switch 1 TCH SETTINGS ff Analog pressure inputs disabled Single tank full switch Long restart time Alarm lamp on high TDS Conductivity RO pump on during flush Inlet valve open during flush Flow metering disabled Not used Not used On Analog pressure inputs enabled Dual tank full switches Pump ON Pump OFF short restart RO system shutdown on high TDS Conductivity RO pump off during flush Inlet valve closed during flush Flow metering enabled 19 SYSTEM OPERATION General Operation On power up if the RO pump switch is ON the inlet control relay will activate and the RO start delay programmed in Setpoint 18 RO Start Delay will begin If no alarms are a
8. If a wrong indication on the LCD display or a long beep is heard when pressing most keys press 3 on the keypad If setpoint shows on the display turn the Power switch off unplug the ribbon cable from the keypad connector Pl rotate it 180 degrees and plug it back in Turn the power on and re check the keypad If the keypad still malfunctions either the keypad or the PC board or both should be replaced Flow screen is not displayed Dipswitch 6 must be ON to enable flow metering No reading from any flow sensor Check all flow sensor wiring and verify that the jumpers on the flow interface board are in the correct positions for the sensors installed see Figure 13 If all is correct the flow interface is probably bad and should be replaced No reading from one flow sensor If the pulses are being received from a flow sensor the corresponding red LED on the flow board should be blinking Exchange wiring with a sensor that is working change jumper position if necessary If the LED now blinks and a reading is now shown replace the bad sensor If a reading is not shown replace the flow interface board Flow sensor readings inaccurate The meter factor for each sensor installed may need to be adjusted If the reading is higher than the actual flow increase the meter factor If the reading is lower decrease the meter factor see Figure 14
9. 00 99 minutes 1 attempt to re start after To disable auto DEFAULT 100 030 00 00000 00000 STANDARD 5 S ETPO 21 22 23 24 25 26 27 28 29 30 32 NT ETPOINTS DESCRIPTION Pretreatment Lockout Delay The amount of time the pretreat lockout switch must be active before pretreat lockout is valid and the RO system shuts down Not Used Not Used Tank Full Delay The amount of time the tank full pump OFF switch input must be active before tank full is valid and the RO system shuts down Tank Full Restart Delay When Dipswitch 2 is OFF this delay is in minutes If ON the delay is in seconds Tank Full Override Tim When th Tank Full Override function is init iated Function 1 the tank full shutdown is overridden for the number of minutes in this setpoint Tank Low Delay The amount of time the tank low switch input must be active before tank low is valid and the Aux system shuts down Not Used Membrane Flush Time The length of time the membrane will flush when membrane flush has been activated Membrane Flush Interval The interval between flush operations Only valid for op hour elapsed time or off time flush Flush Mode Enables flush and selects the type of flush To disable flush set to 00 Not Used
10. 15 RANGE DEFAULT 00 99 05 seconds 01 99 05 seconds 01 99 15 seconds minutes 0 9 3 minutes 01 99 05 seconds 01 99 05 minutes 00 99 24 hours 00 99 00 S STANDARD SETPOINTS ETPOINT DESCRIPTION RANGE 33 Temperature Limit When the 000 150 temperature exceeds this limit after F C the temperature delay the RO system will shut down until reset To disable set to 000 34 Temperature Delay The amount of time 00 99 the temperature limit must b xceeded seconds before RO system shutdown occurs 35 Temp Offset Provides a plus or 0 9 minus offset to the temperature read ing When set to 5 the offset is 0 The displayed temperature is increased for each number above 5 and decreased for each number below 5 36 43 See flow section of manual 44 Not Used 5 49 S pH section of manual 50 Not Used 51 Pressure Unit of Measur Selects PSI 0 1 or bar as unit of measure 52 Temperature Unit of Measur Selects 0 1 degrees F or C as unit of measure 53 Flow Unit of Measur Selects gallons 0 or liters as unit of measure If changed the K factor for each flow Sensor may need to be changed 54 Switch Select Selects whether switch 0 255 inputs or normally open or normally closed 55 Pump Range Selects 500 or 1500 pump 0 1 pressure range NOTE Must have correct range sensor
11. THERE ARE SEVERAL DIFFERENT RANGES OF TOS AND OR CONDUCTIVITY OF FERED FOR THE ROTrol II AND THE READING OBTAINED FROM A RESISTOR WILL BE DETERMINED NOT ONLY BY THE RESISTOR VALUE BUT ALSO BY THE CALIBRATION OF THE ROTro II BEING TESTED A RESISTOR ASSORTMENT OF 1000 4700 10 000 22 000 AND 47 000 OHMS SHOULD ET ADEQUATE FOR TESTING ANY ROTROL NON POWERED SWITCH INPUTS 1 HI ANI ACTS RANGES OFFERED TYPICALLY THESE N O CONTACTS RESISTORS COST 10 TO 20 CENTS EACH EACH SO THE MONETARY INVESTMENT IS MINIMAL FOR SUCH AN ASSORTMENT TO TEST TDS CONDUCTIVITY CIRCUIT SIMPLY CONNECT A RESISTOR TO THE GREEN AND WHITE TERMINALS OF THE TERMINAL STRIP AND OBSERVE THE READING USE THE LOWER VALUE RESISTORS TO TEST THE HIGHER RANGES OF TDS OR ANALOG CIRCUIT TESTING WITH TEST RESISTORS HIGH PUMP PRESS LOW TANK LEVEL Figure 18 49 R amp D SPECIALTIES ROTROL II D RO2 D LED RELAY INDICATOR LED INDICATOR TO POWER SWITCH POWER WIRES TO WALL PLUG BREAKER ETC NOTE ALL OUTPUTS ARE UNPOWERED N O RELAY CONTACTS COMMON TO SOL POWER COMMON TO AUX MOTOR TO AUX MOTOR AUX PUMP TO MOTOR POWER COMMON RO PUMP TROUBLESHOOTING NOISE PROBLEMS VALVES AND MOTORS ARE ELECTROMAGNETIC DEVICES THAT GENERATE ELECTRICAL NOISE VOLTAGE SAGS OR SURGES WHEN THEY PERATE THIS ELECTRICAL NOISE CAN CAUS MOMENTARY MALFUNCTIONS IN ELECTRONICS EQUI
12. ty densa le attuare e d Donal oo epe Oi e 7 SH TPROUNDES 4 2 cakes Saat Sre s scendere ead eee eed eps ae dete esd a sak s Standard SSCPOMMES o yuru Hae ale oan ods Well ane ete i ene e eeu ed we LS Displaying or Changing ee eee xe MUNG TRONS pa WE iE ee VE ep ee ee US Standard Mas eae te Mae S aS K nctdon Operation sanes ew ba ceca ewan eves ov be Ed Uy an ao DIPSWITGH SRETIINGS 4 e LeeeA ed eet eed oat en SYSTEM OPERATION erener neona ena af Ri She VOR eR e eR US E Ve e S 20 General Operation we i ea et ee vr varese ce 20 Tank Pull Qperationaeg eeue Gee seeded aie Gels eee we Bie es 20 Tank Bil L Overrides UE NE ORT was eee ets eV 20 Low Feed High Pump Pressure Operation 21 Low Pump PreSSuve e bade ewe Ue de Ue Rue Ue Re Ue eR 21 Differential Pressure eg UI 21 High TDS Conductivity Alarm Shutdowns 21 t ReJjection TMs eue AC EOS NO OI UE SR UST 22 T Shutdown Disables aout UE EAG CEA EEG EG SER REM 22 ROV Sy Stem Shutdown A 22 Pretreat LoOCKOUU e a
13. 56 Shutdown Disable Allows the low feed 0 9 pressure high pump pressure and high temperature shutdowns to be disabled configured for alarm only 57 Unit 4 Unit number used when comm 0 9 option is used 58 61 See ORP section of manual 57 64 Not Used 16 DEFAULT 120 000 TO DISPLAY OR CHANGE SETPOINTS Refer to Figure 3 for location of J5 Move the shorting block J5 WRITE PROT to the OFF position center and left pins If J5 is in the write protected position and an attempt is made to change a setpoint WRITE PROTECTED will show on the display and the long error beep will be heard CAUTION J5 must be returned to the ON position to secure the memory from inadvertent changes Press the Setpoint key Enter the 2 digit setpoint number The setpoint will be displayed Press the cancel key to return to the main screen or To change the setpoint enter the new value for the setpoint and then press the Enter key The ROTrol will beep twice if the change is accepted or one long beep if an error is made The setpoint value entered must have the correct number of digits For example the value entered for maximum operating hours must have 5 digits Precede your entry by zeros if needed When finished with all setpoint entries move the write protect jumper J5 back to the ON position center and right pins
14. A 1500 OHM RESISTOR MAY BE CONNECTED IN PLACE OF THE RED AND BLACK WIRES OF THE SELECTED SENSOR TO GIVE APPROXIMATELY A 75 F READING AND THE 10000 AND 33000 OHM RESISTORS CAN BE CONNECTED IN PLACE OF THE WHITE AND GREEN WIRES TO GIVE TDS CONDUCTIVITY READINGS I TDS Conductivity sensor reading s inaccurate Verify that each sensor is wired correctly and the temperature reading is correct The sensor readings are temperature compensated and if the temperature reading is not correct the TDS Conductivity readings will not be correct Also each sensor must have a good fluid flow around the sensing element pins to yield an accurate reading See Figure 7 for correct sensor installation If the temperature reading is good the sensors are installed correctly any all pressure readings are correct and the readings are simply off the sensors probe pins may need to be cleaned It may also be necessary to re calibrate the unit as explained in the ADJUSTMENTS section Keypad problems Ensure that the keypad ribbon cable is plugged into the PC board Then press a key and if no beep is heard and nothing changes on the LCD display the keypad is probably bad and should be replaced
15. LEVEL PRESS SWITCH SOLENOID VALVE MOTOR Figure 6 e E o9 9090909020 SS R amp D SPECIALTIES ROTROL II mrp ene 51 2 Tus SWITCH NOTE ALL OUTPUTS ARE UNPOWERED RELAY CONTACTS S INLET SOLENOID MEMBRANE FLUSH gt E Bo m pon t A 2 HP MAX n 240V O TO TOTO TO TO fool POD 9 9 9 9 9 9 9 9 Doopeoceceoocoeocoqcqgol amp 2 HNH B 8 FUSED amp I 240 VAC 5 g POWER IN I F H NON POWERED SWITCH INPUTS ROTROL RO SAMPLE WIRING DIAGRAM 240 VAC MOTORS amp 120VAC SOLENOIDS 11 TDS CONDUCTIVITY SENSOR INSTALLATION Figure 7 12 STANDARD 5 S ETPO 01 02 03 04 05 06 07 09 NT ETPOINTS DESCRIPTION Low Feed Pressure Limit Sensor input lower than the programmed value will cause RO system shutdown To disable set to 00 Low Feed Pressure Delay The amount of time a low sensor input or a low switch input must be active before RO system shutdown occurs High Pump Pressure Limit Sensor input higher than the programmed value will cause RO system shutdown To disable set to 0000 High Pump Pressure Delay The amount of time a high pressure sensor input or a high pressure switch input must be
16. P SPAN TDS or conductivity for the solution ibrated in th the RO 5 using FEED each cell may be calibrated by strip and adjusting display with a calibrated TDS Conductivity meter control to get the correct reading on the RO Display Adjustment The DISPI the clear mounted 31 the Collect a sampl e of the the TDS Conductivity of the sample n adjust the appropriate SPAN display for each cel I AY CONTRAST control can be used to adjust the display contrast for est display for the viewing conditions in which the ROTrol is Refer to Figure 3 for the contrast control s location FLOW METERING The optional flow metering allows permeate concentrate and recirculate flows to be monitored and displayed by the ROTrol Setpoints are provided for calibration for various pipe sizes and flow conditions Setpoints are also provided to program high and low flow limit warnings for permeate and concentrate flow The flow meter interface PC board is mounted to the main board in the upper left corner of the board see Figure 13 The flow meter interface board and the optional pH board may be removed to facilitate the wiring of the analog sensors to their terminal strip To remove the pH board remove the 2 mounting screws holding the board Lift straight up on the pH board to remove i
17. jumper for each sensor J6 J9 should be removed for each sensor installed The Switches and jumpers are pre configured by the factory if the sensors are ordered with the unit If the optional flow metering is installed the flow meter interface board may be removed to allow easier wiring of the analog sensors The plug in terminal strip P5 may also be unplugged for the same reason Feed Pressure Sensor The feed pressure sensor should be installed downstream from the pre filters and inlet valve and before the inlet side of the RO pump The feed pressur sensor wires connect to the P5 terminals labeled A1 The red wire connects to RD and the black wire to BK Jumper J6 should be removed to enable this sensor Pump Pressure Sensor The pump pressure sensor is installed on the discharge side of the RO pump The pump pressure sensor wires connect to the P5 terminals labeled A2 The red wire connects to RD and the black wire to BK Jumper J7 should be removed to enable this sensor c Prefilter Differential Pressure Sensor The prefilter differential pressure sensor is installed upstream of the prefilters The prefilter pressure sensor wires connect to P5 A3 The red wire connects to RD and the black wire to BK Jumper J8 should be removed to enable this sensor Membrane Differential Pressure Sensor The membrane differential
18. 0 Remove the pH sensor rinse with distilled water and shake dry Then insert the probe in a pH 10 0 standard solution and adjust the span control for a reading of 10 0 These steps should be repeated several times as there is some interaction between the 2 adjustment controls Also most pH sensors respond to changes very slowly allow adequate time for the reading to stabilize each time the sensor is moved into a different solution before making any adjustments 36 ELECTRICAL GROUND CLAMP Sis 2 s METAL PIPE TEE EARTH GROUND Figu pH Setpoints KKK 45 46 REME BACK TO THI SETPO NT E ON POSITION WHEN DESCRIPTION LOW pH ALARM If t to or below this va will be displayed disable alarm HI pH ALARM If th to or above this va will be displayed disable alarm MBER TO CHANGE JUMPI 3 4 NPT FITTING COAXIAL SIGNAL CABLE re 15 COMPLETE he pH reading drops lue a low pH alarm Set to 000 to e pH reading rises lue a high pH alarm Set to 000 to 31 ER J5 TO OFF IF CHANGING SETPOINT AND MOVE J5 RANGE DEFAULT 01 0 13 0 06 0 01 0 13 0 08 0 SETPOINT DESCRIPTION RANGE DEFAULT 47 LOW pH SHUTDOWN If the pH reading 01 0 13 0 05 0 drops to or below this value
19. AND WHITE TERMINALS OF THE TERMINAL STRIP THE DISPLAY READING SHOULD INCREASE TO SOME VALUE ABOVE 70 DEPENDING UPON THE RESISTOR S VALUE AND THE PROGRAMMED RANGE OF THE ROTROL II 22 009 OHM RESISTOR SHOULD GIVE A READING ABOVE ON ANY UNIT IF NO INCREASE IN THE READING OCCURS WHEN THE RESISTOR IS CONNECTED THE PC BOARD IS PROBABLY BAD AND SHOULD BE REPLACED IF A READING IS OBTAINED BY CONNECTING THE RESISTOR THE PC BOARD IS PROBABLY WORKING PROPERLY CONNECT THE SENSOR AND SUBMERSE IT IN A CUP OF WATER OF A KNOWN QUALITY TDS OR uS AND IF A READING IS OBTAINED ADJUST IF NECESSARY THE COR RESPONDING SPAN ADJUSTMENT ON THE PC BOARD TO OBTAIN THE CORRECT READING IF NO READING IS B TAINED WITH THE SENSOR IN WATER THE SENSOR OR CABLE IS BAD AND SHOULD BE REPLACED Figure 17 RED FEED PRESSURE x SENSOR BLACK PUMP PRESSURE e SENSOR PREFILTER DIFF RED PRESS SENSOR BLACK MEMBRANE DIFF 25 PRESS SENSOR _BLACK ALL COND TDS SENSORS HAVE E J unn sit n 7 LOW TANK LEVEL NON POWERED SWITCH INPUTS N O CONTACTS ROTROL II INPUT CIRCUIT TESTING WITH A DIGITAL MULTIMETER DMM 48 ROTROL IID PC BOARD SHOWN SWITCH INPUT VOLTAGE MEASUREMENT CONNECT A DMM TO THE INPUT TERMINAL PAIR OF THE INPUT BEING TESTED AS SHOWN IF THE SWITCH IS OPEN NORMAL STATE THE VOLTAGE WILL USUAL
20. Also verify that each sensor 46 is installed in the proper location and wired to the correct terminal strip pH sensor not reading or inaccurate Slow response or large errors can be caused by coated or dirty electrodes If the electrode is coated with a soft substance th lectrode may be cleaned by rinsing under running water If this is not successful try wiping with a soft wet cloth For hard coatings such as scale soaking the electrode in a 5 solution of HCl may work For some hard coatings alternate between a 5 HCl solution and a 10 NaOH solution for 10 minutes each Greasy or oily coatings can be removed by using a detergent solution or isopropyl alcohol After treating the electrode with these solutions be sure to rinse well with clean water If the LCD display shows no reading for pH ensure that the shorting block on J10 is off or on only 1 pin Also check the pH sensor wiring as shown in figure 16 If these checks do not reveal the problem either the pH sensor or the pH PC board may be defective Inspect the pH sensor and ensure that it still has fluid inside the glass bulb If the bulb is dry either re fill the sensor with fluid if re fillable or replace it If the sensor bulb appears to have fluid inside and the wiring appears intact try adjusting the ZERO ADJ Figure 16 adjustment screw to see if any reading appears on the LCD di
21. Display Blank ae ete x Ee Exe a 43 RO Pump Wilk Sat US S 43 Inlet Valve Will NOE Operate dais vas bea aso oe 8 43 AUX RP Pump Will Not Operate 222 dices nigar Osa belts cee ee 44 RO Unit Not Flushing or Not Flushing Correctly 44 Pressure Sensor Readings Incorrect or not Reading 44 iv No TDS Conductivity Reading Keypad Problemss s 2 50x Tn Flow Screen Skipped Incorrect TD5J COnduetivrtv Resdlitgqs 6ee ew diee xw EE No Reading From Flow SensorS4 eowe4 s eile aie ew eee No Reading Erom T Elow SEnsSOrs si ur ER EU Flow Sensor Readings Incort CcEb i 4 9e RR ne eee pH Sensor Not Reading or Incorrect oie aie eee sie TROUBLESHOOTING CHARTS BBA 1 D Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig re re Tre Be ES ES re re re re re Ie ES re re Fe Te H C ND Fa 000 10 01 4 CO ES ILLUSTRATIONS Front Panel Controls and Indicators 3 Switeh Select Tables ions iano eva eh one EE 6 ROZD PCB Tayo toset ete Melia ates aioe hie ete Ie ete eee ere tee lie G e Rat 8 Sample
22. FULL ETC IF THE LED WORKS CORRECTLY BUT THE LCD DOESN T INDICATE THE INPUT S STATUS WHEN THE INPUT 15 SHORTED THE ROTROL Il PC BOARD SHOULD BE REPLACED IF ALL THE ABOVE TESTS SHOW THE ROTROL II TO BE WORKING CORRECTLY BUT DOESN T SHOW A CONTACT CLOSURE WHEN THE MONITORED CONDITION TANK FULL ETC EXISTS THEN THE SWITCH IS BAD OR IMPROPERLY ADJUSTED OR THERE IS A PROBLEM WITH IT S WIRING 4 20 MA ANALOG INPUTS PRESSURE AND TEMPERATURE COLOR BANDS PRESSURE AND TEMPERATURE 1500 OHM TESTING ENS Len THE ROTro II ANALOG INPUTS wo 2 HI rol ll INPU PRESSURE AND TEMPERATURE RESISTOR 7 MAY BE EASILY AND QUICKLY TESTED sever USING RESISTORS TO SIMULATE THE 2 SENSOR INPUTS ONE OR MORE 1500 OHM 1 2 WATT CPu SOCKET RESISTORS ARE RECOMMENDED FOR TESTING THE PRESSURE AND FEED PRESSURE SENSOR ERATURE INPUTS Red BEFORE ATTEMPTING TO TEST ANY etre URE BLACK INPUT DISCONNECT ALL RED SENSOR WIRES AS SHOWN THEN EACH INPUT MAY BE TESTED BY CONNECTING A PREFILTER DIFF RESISTOR TO EACH INPUT TERMINAL 908 PAIR AS SHOWN AND OBSERVING THE PRESS SENSOR BLACK DISPLAY READING FOR THE INPUT RED MEMBRANE DIFF THE READINGS SHOULD BE TYPICALLY 70 80 PSI FOR 125 PSI PRESSURE PRESS SENSOR BACK SENSORS 140 160 PSI FOR 400 PSI PRESSURE SENSORS AND 70 80 DEG FOR TEMPERATURE INPUTS REMEMBER TO SELECT THE DESIRED TEMPERATURE SIGNAL WITH THE P F
23. I20VAC Wien ss eek ed ar VI 9 Sample 240VAC 10 Sample 1207 24 0 SAG War iG ue eoe xem E aa sate TDS Conductivity Sensor Installation 12 PUSH ADL Sack 23 Seren Jueves ets tones e eere a reat e s 25 CSD a RUN esi ee reine wee erre 21 SGIEGOGn 34 5 5 x ace ec RR E eds IEEE d Ee rere RUE NR 28 Startup sSecr Teen s IE seer eels S 30 Flow Mounting and Wi ET Gu u 33 Ke Factor T ERU ES RS 34 pH Sensor Installations creses d es IEEE s 37 pH Mounting sie WR ERE E RE 40 Atarm Divert Relay FB Cente Me pss 41 Testing Chart SUIS 48 Testing Chart 2 534 IUS ee I Was 49 Pe e ea ne Chart 349 sve ers 50 INTRODUCTION The R amp D Specialties ROTrol II is a state of the art control system for commercial and industrial reverse osmosis systems The ROTrol II combines features that have not previously been available in one compact unit The ROTrol II is a microprocessor controlled system that can monitor multiple pressure sensors and or pressure switches A TDS Conductivity monitor controller with programmable setpoints is an integral part of the ROTrol II The ROTrol II displays syst
24. a low pH shutdown will occur after the pH delay has timed out Set to 000 to disable shutdown 48 HIGH pH SHUTDOWN If the pH reading Oil 0 139 0 10 0 rises to or above this value high pH shutdown will occur after the pH delay has timed out Set to 000 to disable shutdown 49 pH DELAY This is the time the pH 00 99 10 value must meet the shutdown setpoint seconds before a pH shutdown will occur pH Operation The pH is displayed by pushing the display key until the screen 2 is shown Pushing the display key again will advance the display to the next screen If the pH value has reached one of the warning levels the alarm light will light and low or high pH will be shown on the alarm display If the pH value reaches on of the shutdown levels and is maintained for the time programmed in setpoint 4 pH Delay the ROTrol will shutdown the RO pump flash the alarm lamp an sound the audible alarm The display will show the pH shutdown message on th display The unit will remain shutdown until the reset key is pressed o NOTE pH electrodes age with time and eventually become desensitized and must be replaced The actual service life of a pH electrode is extremely variable and is dependant on many factors Exposure to extremely pure water will accelerate electrode aging and cause a shorter service lif pH E
25. a tank full or pre treat lockout signal present Check for all normal shutdown conditions by observing the LI display and the position of the RO PUMP switch inlet valve should be open LED DS11 should be on EDs DS2 DS7 the LCD If conditions indicate that the If DS11 does not light the RO PUMP is operating and the unit is not engaged in a membrane flush cycle the PC board should be replaced f LED 0511 is on and the valve does not operate check the wiring between the valve s power source and the valve If all wiring appears intact and correctly wired see Figure 4 5 or 6 replaced If voltage is not present on the valve unswitched directly wired to valve check for the correct voltage on the valve with a DVM If voltage is present on the valve it is probably bad and should be check between th valve s power lead the P6 terminals labeled INLET V Between the unswitched wire and the P6 terminal COM the supply voltage 120 240 should be p resent a break in the wiring between power source proper a wire nut or splice present at P6 COM It will of some it shoul is on and at the terminal N is present on N O the PC If the voltage is not correct the problem is either the P6 terminal COM and the power source or the probably be connected to several kind which may be loose If the correc
26. flow alarm will be displayed If set to 0000 this alarm is disabled Low Concentrate Flow If the concen 001 0 999 9 0000 trate flow drops below this value GPM LPM a low concentrate flow alarm will be displayed If set to 0000 this alarm is disabled High Concentrate Flow If the concen 001 0 999 9 0000 trate flow rises above this value GPM LPM a high concentrate flow alarm will be displayed If set to 0000 this alarm is disabled Flow Totalizer The permeate flow 000000 totalizer can be reset to 0 by pro GAL LTR gramming this setpoint to 000000 The number shown when this setpoint is displayed may not match the current total This is normal is only used to clear the total 34 as this setpoint EFAULT 000000 000000 000000 Flow Operation Dipswitch 6 see Figure 3 must be ON for the flow metering screen to be displayed The flow rate display is shown by pressing the display key on the keyboard until the flow display is reached Permeate concentrate and recirculate flows are displayed If a sensor is not installed for one of the flow rates that display will read 0 0 If the permeate flow sensor is installed the total permeate flow per day and the current permeat total will be shown in addition to the permeate flow per minute If th permeate and concentrate sensors are both installed the system feed flow rat and also the system percent recovery are calculated and displayed Press th display key t
27. of th incoming power for that pump For pumps and valves operated from 120 or 240VAC the ground wires should be tied to the ground of the incoming power The remaining pump and valves can be connected in the same manner See Figures 3 4 5 amp 6 for sample wiring diagrams Pump Motor Wiring The RO and auxiliary repressurization pump motors are connected to the terminal strip P6 The control relays for these pumps can control up to 20A directly or larger pump motors through appropriate motor starters The control relays provide a contact closure and do not supply power The RO pump motor connections are to P6 terminals RO PUMP The Aux RP pump motor connections are to P6 terminals AUX PUMP Inlet and Flush Valve Wiring An inlet valve relay is provided to control the inlet valve A flush valve relay is provided to allow a flush operation to be controlled by a tank full condition or by a periodic time function These relays provide both normally open and normally closed contacts to operate either solenoid or motor driven valves Each relay can be connected to whatever voltage is required for its corresponding valve The inlet valve connections are to P6 terminals INLET V The flush valve connections are to P6 terminals FLUSH V The inlet relay can also be used to operate a motor starter for a booster pump in addition to an inlet valve
28. only be reset by pressing the Reset key Low Pump Pressure The pump pressure sensor has an additional setpoint for a low pump discharge pressure alarm When the RO unit is operating if the pump pressure drops below the value programmed in setpoint 05 Low Pump Pressure Limit the alarm lamp will light and LOW PUMP PRESSURE will show on the alarm display This alarm is disabled when the RO pump is off and during flush This setpoint does not cause RO system shutdown If Setpoint 05 is programmed to 000 the low pump pressure alarm is disabled Differential Pressure Alarms If the optional differential pressure sensors are installed high differential pressure setpoints 06 Prefilter Differential and 07 Max Membrane Differential are provided If the sensors record a pressure drop across the prefilter or the membrane that exceeds the setpoints the alarm lamp will light display will show the setpoint that was exceeded Programming and the alarm these 2 setpoints to 00 will disable these alarms High TDS Conductivity Alarm Shutdown If va lue program programmed in Dipswitch med in setpoint 10 Setpoint 11 lay times o ut TDS Cond Alarm Delay the alarm lamp will flash High TDS Conductivity Limit the audible alarm wil 3 is OFF and the permeate TDS Conductivity reading exceeds the the delay is st
29. pressure sensor is installed in the concentrate line of the membrane array The membrane differential pressure sensor wires connect to P5 A4 The red wire connects to RD and the black wire to BK Jumper J9 should be removed to enable this sensor Switch Inputs Switch inputs are connected to P4 The connections for these inputs are not polarity sensitive and can be connected to either terminal The switch inputs should be contact closures only NOTE Applying voltage to these terminals will damage the ROTrol The Switches can be either normally open or normally closed in any combination Setpoint 54 selects whether an input looks for a normally closed or normally open switch to activate the input The following table lists the values used to program Setpoint 54 to select which switches are normally open N O or normally closed N C Setpoint 54 is defaulted to 00 which programs all switches as normally open Normally open means that a switch is open when not activated and closed when it is activated Normally closed switches operate opposite from normally open SWITCH SWICH PUMP PRESSURE 2 TANK FULL PUMP OFF 4 E 365 32 o Trak FUUL7PUNP ON 9 16 PRERE LOCKOUT e 32 Figure 2 Select the type of switch used for each input and put that value in the far right column Add the values and progr
30. the TROUBLESHOOTING CAUTION Hazardous voltages are present when power is applied to the unit Care should be taken when troubleshooting any of the input power or relay output circuits When disconnecting or connecting any board or accessory be sure power to the unit has been turned off Before replacing any PC boards and accessories or making any adjustments to the unit please refer to the appropriate troubleshooting section for the proper testing methods Incorrect adjustments can mask problems or can cause further problems Check all setpoints and verify proper values for each setpoint In the event you are unable to determine the cause of a failure you can contact R amp D Specialties for further assistance Please make note of the events leading up to the failure the exact failure what LED s if any that are on what readings are shown on the display etc before contacting technical support The more information you have when you contact us the easier it will be to determine th source of the problem Technical support can be contacted by Fax at 915 561 5696 by email at trproc rdspec com or by phone at 915 561 5707 Phone support is only available from 8AM to 5PM Central Standard Time BUILT IN AIDS To help in locating any malfunctions all of the switch inputs have green LED lamps DS2 through DS7 that indicate when the switch for an i
31. 0 amp D SPECIALTIES R amp D SPECIALTIES ROTrol II Version D USER S MANUAL No part of this document may be copied or reproduced in any form or by any means without the prior written permission of R amp D Specialties R amp D Specialties makes no warranties with respect to this documentation Information in this document is subject to change without notice R amp D Specialties shall not be liable for technical or editorial errors or omissions that may appear in this document nor for incidental or consequential damages resulting from the or use of this document furnishing performance Document RO2D V5 33 Released AUGUST 2009 R amp D Specialties Inc 9918 W I 20 Midland TX USA 79706 915 561 5707 Fax 915 561 5696 www rdspec com email rdspec rdspec com 1999 2009 by R amp D Specialties Inc All Rights Reserved LIMITED WARRANTY R amp D Specialties warrants to the original purchaser that the products it manufactures will be free from defects in material and workmanship for a period of twelve months from the date of shipment on parts and ninety days on labor Some non R amp D Specialties manufactured resal items may have warranty periods less than twelve months R amp D Specialties obligation under this warranty is limited exclusively to the repair or replacement of any product that R amp D Specialties finds to be defective Items returned fo
32. A 120 240VAC SPDT RO pump control 20A max resistive 1HP 120 240VAC Aux RP pump control 20A max resistive 1HP 120 240VAC Flush control 5A 120 240VAC SPDT FRONT PANEL CONTROLS AND INDICATORS POW ALA FR SW RM LAMP TCH RO PUMP SWITCH AUX SWITCH DISPLAY KEY BOARD DISPLAY KE SETPOINT FUNCTION RESE ENTE CANCEL KE Controls power to the ROTrol POWER amp 3 6 9 eelo jee ALARM RO PUMP e amp amp electronics Flashes when a fault causes an RO system utdown On steady when a setpoint is exceeded at does not cause a RO system shutdown sh th En ables or disapbl En ables or disabl Sh es RO pump control es Aux RP pump control ows status of ROTrol system Used to input changes to the ROTrol II system Toggles display to show other status displays Al ows setpoints Al to be displayed or changed ows function operations to be initiated Push once for alarm silence and twice to reset System after a shutdown has occurred Confirms entry of a new setpoint value or activates function Aborts entry or display of a setpoint or function INSTALLATION Physical Installation Mount the ROTro in a convenient locatio
33. ACED IF THE CORRECT VOLTAGE IS NOT PRESENT MEASURE BETWEEN THE DEVICE S POWER COMMON AND THE PC BOARD TERMINAL STRIP IF THE VOLTAGE IS CORRECT BETWEEN THE HOT TERMINAL AND COMMON BUT NOT BETWEEN THE TERMINAL FEEDING THE DEVICE REPLACE THE PC BOARD IF THE VOLTAGE IS NOT CORRECT BETWEEN THE TERMINAL AND COMMON TRACE THE HOT WIRE BACK TO ITS POWER SOURCE AND CORRECT THE PROBLEM TRIPPED BREAKER BLOWN FUSE OPEN WIRE ETC 51
34. EUN wan ew wes 4 Terminal Strip Jumper and Adjustment Locations 4 POWE Wa TT CG nere ae Ae ie R Siw y SE oe ak es 4 Pump and Valve RelaVS esecgGewe ase Sun a rums Ee n ILLE ey ae cay 4 Pump Motor eme eu IUE UE EI E ears uu UT ES M alate 4 Pa ees eve lush Valve ves eae dte et ves ces 4 TDS Condu uctivity Cello Wiring net hea ta et ae EE SERES 5 Analog Pressure ie Iu I IM UU eii IM Ie IUe 5 Feed Pressure ma aae Wai echte er tea ra E lg 9 Pump Mise iit ak pate oh ote AOL De ar dus Sa P uA 5 Prefilter Differential Pressure oe qe uus 5 Membrane Differential Pressure 6 RR V UE Moers 6 Tank Fully Pump eum omm REX Eum S C 6 Tank puldpumpounmncwuibdhoaeudb ine Wei E EE EH eiu 6 Tank LOW xa ye ex Rn equae verbes 7 Low Feed Pressure Switch u s us area ei EVER UR oe eves 7 High Pump Pressure u Ree RU e PETRA e e e e 7 Pretr at lockout Swatch ire eve wn S 7 Ala rim Dave ts Out purses caste eek ee et Sh 7 Alarm ee wile aie GR Gig ee eL Gh goalie Sie ls 7 Divert OTE Es ei ede e era
35. ID VALVE ROTROL MOTOR RO II SAMPLE WIRING DIAGRAM 120 VAC MOTORS amp SOLENOIDS Figure 4 MUS 1998 s RS P2 RED FRESSURE PUMP PRESSURE i SENSOR BLACK PREFILTER DIFF PRESS SENSOR MEMBRANE DIFF n PRESS SENSOR BLACK 2 LEGEND WIRE e WIRE CONNECTION 7 NO CONNECTION 69 LEVEL PRESS SWITCH SOLENOID VALVE MOTOR Figure 5 R amp D SPECIALTIES ROTROL I RO2 D mve NOTE ALL OUTPUTS ARE UNPOWERED RELAY CONTACTS RED x 4 am PERMEATE 0 O RELAY SENSOR zi E i MEMBRANE tpg ERES 125 EAR 99 y al 455 C m x ama 3 a cm 240V un o S iH 5 3 FUSED LOW TANK LEVEL NON POWERED SWITCH INPUTS ROTROL RO SAMPLE WIRING DIAGRAM 240 VAC MOTORS amp SOLENOIDS 10 W am 1998 RS T RED FEED PRESSURE 1 SENSOR PUMP PRESSURE EL SENSOR euacx amp 5 PREFILTER DIFF Pa PRESS SENSOR Brack MEMBRANE DIFF PRESS SENSOR SLACK B ka RED Jr COND TDS SENSOR 5 ies c Min E f 29 dO 1 63 SENSOR J LEGEND WIRE WIRE CONNECTION 4 NO CONNECTION
36. JACKET 2 CAREFULLY UNWEAVE APPROX 1 1 4 OF THE WIRE BRAID AND 6 CONNECT THE CENTER CONDUCTOR AND SHIELD TO THE TERMINAL TWIST TIGHTLY AS SHOWN STRIP ON THE pH BOARD AS SHOWN ABOVE Figure 15 40 ALARM DIVERT RELAY BOARD An optional PC board is available to provide relay outputs for operating additional devices or equipment when alarms are detected by the ROTrol or the TDS Conductivity Setpoint is exceeded The optional relay board attaches to the ROTrol terminal strip P4 as shown Figure 17 The relay outputs do not supply power but will switch power routed through them to the controlled devices 1 phase Each relay is capable of switching loads up to 5A at voltages up to 240V The alarm output activates whenever any warning or shutdown is active The divert T d utput can be used to operate a divert valve or can be used as a high DS Conductivity alarm output The divert output is active DS Conductivity is above the value programmed in Setpoint 10 ROTROL IID PC BOARD PARTIAL VIEW 929 ne O 2056902086 ra KD Goocoeoococoooeoooo ml HA D RELAY EXPANSION PC BOARD CF 2080229 NO C NC N C NC O R amp D SPECIALTIES ROTROL IID WITH OPTIONAL RELAY EXPANSION Figure 17 41 any time
37. JUMPER IF EACH READING IS CORRECT WITH THE RESISTOR CONNECTED RECONNECT THE SENSORS ONE AT A TIME AND OBSERVE THE READINGS ON THE DISPLAY IF THE READING FOR A PARTICULAR INPUT IS CORRECT WITH THE RESISTOR CONNECTED BUT NOT WITH THE SENSOR CONNECTED THE SENSOR SHOULD BE REPLACED IF THE READING WITH THE RESISTOR IS NOT CORRECT REMOVE THE SENSORS BLACK WIRE AND RE TEST IF THE READING IS CORRECT WITH THE WIRE REMOVED THE PC BOARD IS GOOD RE CONNECT THE SENSOR BOTH WIRES AND CHECK THE COND TOS DISPLAY READING IF THE READING IS SENSOR CORRECT THE SENSOR IS GOOD IF NOT REPLACE THE SENSOR IF THE READINGS ON ALL CONNECTED ROTROL IID PC BOARD SHOWN PERMEATE COND TDS SENSOR SENSORS GO BAD WHEN ONE SENSOR NOTE ALL COND TDS IS CONNECTED THAT SENSOR SHOULD SENSORS HAVE BE REPLACED THE 15VDC POWER TEMPERATURE FOR THE SENSORS CAN BE PULLED OUTPUTS DOWN BY A SINGLE BAD SENSOR AND CAUSE ALL READINGS TO BE BAD TDS CONDUCTIVITY TESTING THE TOS CONDUCTMTY CIRCUITS MAY BE TESTED BY CONNECTING RESISTORS TO THE GREEN AND WHITE INPUT TERM INALS OF THE SENSORS CORRESPONDING TERMINAL STRIPS THE VALUES OF THE RESISTORS USED WILL DETERMINE THE READINGS THAT WILL BE SHOWN ON THE LCD DISPLAY BUT THE RELATIONSHIP BETWEEN THE RESISTOR VALUE AND THE READING IS NOT AS SIMPLE AS THE RELATIONSHIP BETWEEN THE 1500 OHM RESISTOR AND THE TEMPERATURE AND PRESSURE READINGS ABOVE
38. LACING THE SWITCH OR BROKEN WIRE IF THE VOLTAGE IS CORRECT ON TERMINAL 4 BUT NOT ON BOTH ENDS OF THE FUSE REPLACE THE USE IF THE VOLTAGE IS CORRECT ON BOTH ENDS OF THE FUSE UNPLUG THE DISPLAY S RIBBON CABLE IF THE POWER LED LIGHTS THE DISPLAY ASSEMBLY SHOULD BE REPLACED IF THE LED STILL DOES NOT LIGHT THE PC BOARD SHOULD BE REPLACED TROUBLESHOOTING OUTPUT CIRCUITS WARNING DANGEROUS VOLTAGES PRESENT PROCEED WITH CAUTION THE OUTPUT CIRCUITRY OF THE ROTrol II IS DESIGNED TO TURN THE OPERATING POWER FOR THE RO UNIT S VALVES AND MOTORS ON AND OFF THE ROTrol II DOES NOT SUPPLY POWER IT SIMPLY SWITCHES THE POWER FEEDING EACH OUTPUT CIRCUIT EACH OUTPUT CIRCUIT RELAY CONTACT IS UNIQUELY INDEPENDENT FROM ALL OTHERS THIS ALLOWS THE CONTROLLED DEVICES VALVES MOTORS ETC TO BE OPERATED AT DIFFERENT VOLTAGES i e THE VALVES MAY BE OPERATED FROM ONE POWER SOURCE AND THE MOTORS MAY BE OPERATED FROM A DIFFERENT POWER SOURCE AS AN EXAMPLE IT IS NOT UNUSUAL TO OPERATE THE VALVES AND AUX RP PUMP FROM 120V AND THE RO PUMP FROM 240 THIS INDEPENDENT ARRANGEMENT ALLOWS A LOT OF FLEXIBILITY IN SELECTING THE VALVES AND MOTORS FOR AN RO UNIT BUT IT ALSO COMPLICATES THE TROUBLESHOOTING OF THIS CIRCUITRY AS THE WIRING FOR THESE DEVICES MAY VARY CONSIDERABLY BETWEEN RO UNITS THE FIRST STEP IN TROUBLESHOOTING THE OUTPUT CIRCUITRY IS TO DETERMINE EXACTLY HOW THE VALVES MOTORS PC BOARD AND POWER SOURCE S ARE WIRED TU
39. LY BE BETWEEN 2 AND 3 VOLTS DC IF THE SWITCH IS CLOSED THE READING SHOULD BE APPROXIMATELY 707 NOTE IF THE SWITCH IS CLOSED DISCONNECT ONE SWITCH WIRE TO CHECK THE OPEN SWITCH VOLTAGE LEVEL IF THE VOLTAGE READING WITH THE SWITCH OPEN 1S CORRECT THE PC BOARD SHOULD RE IF THE READING DOES NOT DROP TO APPROXIMATELY ZERO WITH THE SWITCH CLOSED EITHER THE did IS BAD OR THERE IS A PROBLEM WITH THE WIRING IF THE DMM READING IS FLUCTUATING ELECTRICAL NOISE IS BEING PICKED UP IN THE WIRING WHICH MAY CAUSE ERRATIC PROBLEMS IN THE ROTROL II IF NOT CORRECTED OFTEN THE PROBLEM MAY BE SOLVED BY SIMPLY CONNECTING THE CABLE S SHIELD AND OR THE SWITCH S GROUND WIRE TO EARTH GROUND USUALLY POWER GROUND OFTEN RE ROUTING THE WIRE TO KEEP IT AWAY FROM MOTORS AND MOTOR WIRING WILL SOLVE THE NOISE PICKUP PROBLEM INPUT SWITCH TESTING TO TEST A SWITCH INPUT DISCONNECT ONE OF IT S WIRES FROM THE TERMINAL STRIP ENSURE THAT THE GREEN LED ABOVE THE TERMINAL STRIP AND ABOVE THE LEFT TERMINAL OF THE SWITCH INPUT PAIR IS NOT ON USE A SHORT WIRE LOOP AND SHORT BETWEEN THE SWITCH S TERMINAL PAIR THE GREEN LED SHOULD LIGHT WITH THE SHORT ACROSS THE TERMINALS IF THE LED LIGHTS WITH THE WIRE SHORT AND GOES OUT WHEN THE WIRE IS REMOVED THE INPUT CIRCUIT IS WORKING CORRECTLY IF NOT THE ROTROL PC BOARD SHOULD BE REPLACED IF THE LED WORKS CORRECTLY THE DISPLAY SHOULD ALSO SHOW THE SWITCH CLOSURE LE LOW PRESSURE TANK
40. MUST WET AT ALL TIMES i e KEEP THE CAP ON THE SENSOR AND DO NOT INSTALL IN THE FLOW LINE UNTIL THE UNIT IS ACTUALLY PLACED INTO SERVICE I The pH sensor must be mounted in the flow line and oriented to allow physical contact with the fluid being measured and not allow air to be trapped around the sensor i e the pH sensor should be side or bottom mounted in horizontal pipe runs Also the output from the pH sensor is a low level voltage which may be affected by any static charges and or stray currents flowing in the fluid Stream It is recommended that the pH sensor be installed in a grounded metal fitting to prevent possible stray voltages from affecting the reading See Figure 15 for one suggested mounting configuration pH Sensor Wiring Connect the shield wire to TBl and the signal wire or center conductor to 1 The shorting jumper must be removed from J10 on the main PC board to enable pH readings Refer to Figure 16 for pH wiring information and Figure 3 for J10 location pH Calibration The pH sensor is calibrated at the factory but periodic recalibration should be done to maintain sensor accuracy Refer to Figure 16 for adjustment locations To calibrate the pH monitor insert the pH sensor in a pH 4 0 standard solution and adjust the zero control for a reading of 4
41. OW FEED PRES S 60 pressure condition before the unit attempts to restart MEM FLUSH TIM ER 5 LO FEED pH condition HI FEED pH condition The The unit attempts to restart The RO pump is shutdown due to a low feed The number is the amount of time in minutes The RO unit is in the membrane flush mode and the number of minutes remaining in the flush mode HIGH TDS COND The RO unit has shutdown due to a high DS Conductivity condition PRETREAT LOCKOUT The RO unit is shutdown because the pretreat system is out of service HI FEED TEMP The RO unit has shutdown due to a high feed water temperature condition RO unit has shutdown due to a low feed pH RO unit has shutdown due to a high feed Ph 25 Screen 1 also displays 6 other RO operating conditions F 1390PPM If the optional feed sensor is installed the feed water quality PPM will be displayed If the unit of measure is microsiemens the PPM will be replaced with uS If the feed sensor is not installed the display will show F PPM If the feed reading is out of range the display will show F P 32PPM The permeate water quality in PPM is shown If the selected unit of measure is microsiemens the PPM will be replaced with uS If the permeate AAA reading is out of range the displa
42. PMENT IF THE NOISE FINDS ITS WAY INTO THE ELECTRONICS CIRCUITRY IF ELECTRICAL NOISE PROBLEMS ARE ENCOUNT ERED THE ROTrol II MAY MOMENTARILY MAL FUNCTION IN A VARIETY OF WAYS USUALLY A MICROPROCESSOR RESET WILL OCCUR WHEN THE NOISE IS ENCOUNTERED IF THE UNIT IS SHUTTING DOWN A PUMP OR CLOSING A VALVE IT MAY RESTART THE PUMP OR OPEN THE VALVE SEVERAL TIMES BEFORE FINALLY OPERATING PROPERLY ALSO THIS REACTION WILL USUALLY BE VERY ERRATIC OCCURING ONLY OCCASSIONALLY ALSO IT MAY OPERATE OTHER DEVICES DURING THIS REACTION ALTHOUGH CIRCUITS IN THE ROTrol II ARE DESIGNED TO REJECT MOST ELECTRICAL NOISE DUE TO THE WIRING AND OR DEVICES OPERATED BY THE ROTrol II SOME NOISE MIGHT 5 SIONALLY GET INTO THE CIRCUITRY FORTUNATELY NOISE PROBLEMS CAN USUALLY BE PREVENTED OR SOLVED USING INEXPENSIVE NOISE FILTERS CONNECTED ACROSS THE VALVE OR MOTOR GENERATING THE NOISE IT IS ALWAYS ADVISABLE TO EMPLOY NOISE FILTERS WHEN OPERATING ELECTROMAGNETIC DEVICES WITH ELECTRONIC CONTROLLERS IF R amp D SPECIALTIES SUPPLIES THE ROTrol II WITH AN OVERSIZED ENCLOSURE AND WITH PRE WIRED POWER DISTRIBUTION TERMINAL STRIPS NOISE FILTERS WILL BE SUPPLIED IF THE ROTrol II IS SUPPLIED IN ITS GENERIC FORM G TANDARD ENCLOSURE IT IS THE CUSTOMER S ESPONSIBILITY TO PROVIDE ALL POWER WIRING AND ANY NOISE FILTERING IT IS ADVISABLE TO INSTALL FILTERS IN ALL CASES SIMPLY TO AVOID POSSIBLE PROBLEMS FILTERS MAY BE PURCHASED F
43. R LEFT ol POS RIGHT ol POS AS FOLLOWS TYPES TO BE MIXED 12v QUT SIGNAL IN POSITION SIGNAL METER MFG 3 CALIBRATION REQUIRES STORING SIGNAL IN FT Si R BERKERT K LEFT ARALL SENSOR BERKERT THE CORRECT K FACTORS INTO PES S RIGHT PICKUP SIGNET SETPOINTS 36 38 SEE TEXT FLOW METER INTERFACE MOUNTING amp WIRING Figure 13 33 Flow K Factors Refer to ma Flow Setpoints 36 3 38 39 40 41 42 43 ETPO nufacturers documentation for proper K factors REMEMBER TO MOVE JUMPER J5 TO OFF IF CHANGING A SETPOINT AND MOVE BACK TO THE ON POSITION WHEN COMPLETE NT DESCRIPTION RANGE Meter 1 Factor This setpoint is used 0001 00 9999 99 to calibrate the permeate flow meter Meter 2 Factor This setpoint is used 0001 00 9999 99 to calibrate the concentrate flow meter Meter 3 Factor This setpoint is used 0001 00 9999 99 to calibrate the recirculate flow meter Low Permeate Flow If the permeate 001 0 999 9 0000 flow drops below this value a low GPM LPM permeate flow alarm will be displayed If set to 0000 this alarm is disabled High Permeate Flow If the permeate 001 0 999 9 0000 flow rises above this value a high GPM LPM permeate
44. RATION x First determine when and exactly what the correct operation should be when flush occurs The correct operation is explained in the section SYSTEM OPERATION for the different dipswitch settings and related Setpoint values T flush has been initiated DS12 should be on and the flush valve should open If DS12 is on and the valve does not switch check the wiring between the valve s power source and the valve If all wiring appears intact and correctly wired see Figure 4 5 or 6 check for the correct voltage on the valve with a DVM If voltage is present on the valve it is probably bad and should be replaced If voltage is not present on the valve check between the valve s unswitched directly wired to valve power lead and the P6 terminals labeled FLUSH V Between the unswitched wire and the P6 terminal COM the supply voltage 120 240 should be present If the voltage is not correct the problem is either a break in the wiring between the P6 terminal COM and the power source or the power source proper It will probably be connected to several other wires with a wire nut or splice of some kind which may be loose If the correct voltage is present at P6 COM it should also be present at the terminal N O when DS12 is on and at the terminal N C when DS12 is off If DS12 is on and no voltage is present on N O the PC board should be replaced
45. RN OFF ALL POWER FEEDING THE RO UNIT AND PHYSICALLY TRACE OUT ALL POWER AND CONTROL WIRING PAY PARTICULAR ATTENTION TO ANY WIRE NUTS OR OTHER CONNECTORS USED AND ENSURE THAT ALL CONNECTIONS ARE CLEAN AND TIGHT OFTEN THE PROBLEMS ARE CORRECTED DURING THIS INSPECTION AFTER DETERMINING HOW THE VALVES AND MOTORS ARE WIRED THE UNIT MAY BE POWERED UP AND TROUBLESHOOTING OF ANY PROBLEMS MAY BEGIN IT WOULD BE HELPFUL TO READ THE SYSTEM OPERATION SECTION OF THE ROTrol II MANUAL APPROX 3 PAGES TO ENSURE THAT THE FUNCTIONAL OPERATION OF THE OUTPUT CONTROL CIRCUITRY IS THOROUGHLY UNDER STOOD i e WHEN SHOULD EACH CONTROL RELAY OPERATE AND WHEN SHOULD IT NOT OPERATE EACH RELAY WHICH OPERATES A VALVE OR MOTOR HAS A RED LED ON THE PC BOARD THAT LIGHTS WHEN THE RELAY OPERATES IF A VALVE OR A MOTOR IS NOT TURNING ON CHECK THE COR RESPONDING LED ON THE PC BOARD TO ENSURE THAT THE RELAY IS OPERATING IF THE LED IS OFF CHECK FOR ANY ERROR CONDITIONS LOW PRESSURE HIGH PRESSURE ETC OR Al NORMAL SHUT DOWN CONDITIONS PRE TREAT LOCKOUT TANK FULL ETC THAT WOULD PRE VENT THE RELAY FROM OPERATING USE THE GREEN INPUT LED INDICATORS AND THE LCD DISPLAY TO DI TERMINE THESE CONDITIONS IF THE RELAY SHOULD BE ON BUT ISN T REPLACE THE PC BOARD IF A RELAY S LED IS ON BUT THE CONTROLLED DEVICE VALVE OR MOTOR IS NOT OPERATING MEASURE THE VOLTAGE ACROSS THE DEVICE WITH A DMM IF THE CORRECT VOLTAGE IS PRESENT THE DEVICE SHOULD BE REPL
46. ROM ELECTRONIC SUPPLY HOUSES OR R amp D SPECIALTIES OR CONSTRUCTED FROM COMMONLY AVAILABLE ELECTRONIC PARTS A SUGGESTED FILTER IS SHOWN BELOW INLET SOLENOID CONNECT TO CONNECT TO SWITCHED HOT PC BOARD POWER COM SAMPLE FILTER CAPACITOR 1uF 400V OR HIGHER RESISTOR 47 OHM 1 2 WATT CONNECT FILTER ACROSS DEVICE AS SHOWN ROTrol II POWER AND OUTPUT TESTING WITH A DIGITAL MULTIMETER Figure 19 DMM 50 TROUBLESHOOTING POWER PROBLEMS WARNING DANGEROUS VOLTAGES PRESENT PROCEED WITH CAUTION WHEN THE CORRECT AC POWER IS APPLIED TO THE ROTrol Il AND THE POWER SWITCH IS SWITCHED ON THE GREEN POWER LED ON THE ROTrol II PC BOARD SHOULD LIGHT IF THE LED DOES NOT LIGHT VISUALLY CHECK THE VOLTAGE SELECT JUMPERS FOR THE CORRECT SETTING 12 V SHOWN IN PICTURE IF THE JUMPER SETTING IS CORRECT MEASURE THE VOLTAGE ON THE POWER TERMINALS WITH A DMM AS SHOWN IF THE VOLTAGE IS NOT PRESENT OR CORRECT ENSURE THAT THE POWER WIRES ARE INTACT BY TRACING THEM BACK TO THE POWER SOURCE WALL PLUG BREAKER BOX ETC AND ENSURE HAT THE PLUG OR BREAKER IS HOT CORRECT ANY PROBLEMS FOUND IF THE VOLTAGE READING IS CORRECT ON THE POWER TERMINALS MEASURE THE VOLTAGE BETWEEN TERMINAL 1 COM OF THE TERMINAL STRIP AND TERMINAL 3 TERMINAL 4 AND EACH END OF THE FUSE IF THE VOLTAGE IS CORRECT ON TERMINAL 3 AND NOT ON TERMINAL 4 EITHER THE POWER SWITCH OR ITS WIRING IS BAD CORRECT THE PROBLEM BY REP
47. S Cond Alarm Delay High TDS Cond Shutdown Delay When setpoint 10 has been exceeded no alarm will be given until this time has expired If the TDS Cond shutdown is enabled with dipswitch 3 the shutdown will occur after this delay Reject Limit If the membrane rejection drops to or below this value the alarm lamp will light and low rejection will show on the alarm screen To disable set to 00 Not Used Not Used Current Operating Hours current Operation value set to 00000 Aux Start before the tank low i Automatic System is sh pressure or RO system sh number of hours of RO system Maximum Operating Hours When the RO System operating hours exceed this the alarm lamp will light and max operating hours exceeded will show on the alarm screen To disable RO Start Delay The amount of time before the RO pump starts when any ut down is cleared Delay The amount of time nput clears Reset Timer utdown due to high pump low f Aux relay starts when the If the RO after the programmed amount of time d pressure the RO system is automatically reset and the RO system wil the RO start delay matic reset set to 00 14 RANGE 001 999 PPM uS 001 999 seconds 01 99 minutes 00 99 00000 99999 hours 00001 99999 hours 01 99 seconds 01 99 minutes
48. TER COMMON LEAD AS SHOWN AND CONNECT THE LEAD TO THE TOP INPUT TERMINAL OF THE TERMINAL STRIP AS SHOWN THE VOLTMETER READING SHOULD BE 14 5 15 5 VOLTS DC FEED COND TDS SENSOR IF THE READING IS VERY LOW OR 707 DISCONNECT ALL RED WIRES ONE AT A TIME WHILE CHECKING THE VOLTAGE NOTE IF THE READING JUMPS UP WHEN ONE OF THE RED WIRES IS DISCONNECTED EITHER THAT CABLE OR SENSOR IS SHORTED AND MUST BE REPAIRED OR REPLACED TEMPERAUTRE OUTPUTS TESTING SENSOR OUTPUTS TO CHECK A SENSOR OUTPUT CONNECT THE LEAD AS SHOWN AND CONNECT THE LEAD TO THE BLACK INPUT TERMINAL OF THE SENSOR BEING TESTED THE VOLTMETER READING SHOULD BE BETWEEN 1 00 AND 5 00 VOLTS IF THE SENSOR IS WORKING PROPERLY IF THE READING IS HIGH CHECK FOR OVER RANGE HI PRESS AND IF SO CORRECT THE CONDITION IF THE PRESSURE ON THE SENSOR IS WITHIN ITS RANGE AND THE VOLTAGE IS ABOVE OR BELOW THE 1 5 VOLT RANGE RE PLACE THE SENSOR TESTING TDS COND INPUTS TO TEST THE TOS COND SENSORS AND THE PC BOARD CIRCUITRY DISCONNECT THE GREEN AND WHITE WIRES OF THE SENSOR BEING TESTED WITH BOTH WIRES DISCONNECTED THE READING ON THE RO TROL II S DISPLAY SHOULD 70 FOR THE SENSOR BEING TESTED IF THE READING IS NOT EXACTLY ZERO ADJUST THE ZERO ADJUSTMENT SCREW TO GET A ZERO READING IF A 70 CAN NOT BE OBTAINED THE THE ROTROL PC BOARD SHOULD BE REPLACED IF A READING CAN BE OBTAINED CONNECT A RESISTOR TO THE GREEN
49. active before an RO system shutdown occurs Low Pump Pressure Limit When the pump pressure drops below this limit with the RO unit operating the alarm lamp will light and low pump pressure will show on the alarm screen To disable set to 000 Maximum Prefilter Differential PSI When the prefilter sensor pressure minus the low feed sensor pressure exceeds this value the alarm lamp will light and high prefilter differential pressure will show on the alarm screen To disable set to 00 Maximum Membrane Differential PSI When the pump pressure sensor pressure minus the membrane pressure sensor exceeds this value the alarm lamp will light and high membrane differen tial pressure will show on display To disable set to 00 Not Used Not Used 13 RANGI LH 01 99 PSI BAR 00 99 seconds 001 9999 PSI BAR 01 99 seconds 000 999 PSI BAR 01 99 PSI BAR 01 99 PSI BAR DEFAULT 20 0220 150 20 STANDARD 5 S ETPO 10 11 T2 13 17 18 19 20 NT ETPOINTS DESCRIPTION High TDS Cond Limit When this value is met or exceeded the alarm lamp will light and high TDS Cond will show on alarm screen after the delay pro grammed in setpoint 11 has expired To disable set to 000 TD
50. am this value in Setpoint 54 For example if the Low Pressure and Pretreat switches were normally closed and all others were normally open the value programmed in Setpoint 54 would be 1 32 33 WARNING DO NOT CONNECT POWERED SIGNALS TO THESE INPUTS Tank Full Pump OFF Switch The tank full level switch or in dual tank full switch systems the upper tank full switch connects to the P4 terminals labeled T F P OFF When this switch activates the unit will shutdown for tank full Tank Full Pump ON Switch In dual tank full switch systems the lower tank full level switch connects to the P4 terminals T F P ON When dual tank full switches are selected and both the tank full pump OFF and the tank full pump ON switches are not activated the RO unit will operate Tank Low Switch The tank low switch connects to the P4 terminals TANK LOW Low Feed Pressure Switch In systems with no feed pressure sensor or where a low pressure switch in addition to the feed pressure sensor is required the low feed pressure switch connects to the P4 terminals LOW PRESS High Pump Pressure Switch In systems with no pump pressure sensor or where a high pressure switch in addition to the pump pressure sensor is required the high pump pressure switch connects the P4 terminals HIGH PRESS Pretreat Lockout Switch In systems where it i
51. arted When this time l sound and high TDS Conductivity will show on the alarm displ ay If Dipswitch 3 is ON and the high permeate TDS Conductivity limit is excee ded for the delay programmed in setpoint 12 High TDS Conductivity Shutdown De lay the RO system will shut down until reset Programming Setpoint 10 to 000 will disable the high TDS Conductivity alarm When the unit is in flush or when the RO unit is off 21 due to any shut down condition the TDS Conductivity alarm is disabled Rejection Limit If the optional feed TDS Conductivity monitor is installed feed TDS Conductivity and membrane rejection are displayed If the membrane rejection drops below the value programmed in setpoint 13 Reject Limit the alarm lamp will light and LOW PERCENT REJECTION will show on the alarm screen Programming Setpoint 13 to 00 will disable the percent rejection alarm Shutdown Disable The low d pressure high pump pressure and high temperature shutdowns can be disabled and configured for alarm only by programming Setpoint 56 Shutdown Disable with the correct value The default for this setpoint is 0 which enables all 3 shutdowns Each shutdown has a factor The factor for low feed pressure is 1 the high pump pressure factor is 2 and the high temperature factor is 4 Add the factors for the shutdowns that are to be disabled a
52. btained that sensor is good If the reading is bad either the sensor is bad or the PC board is bad If the reading is good leave the good sensor connected Then one at a time connect each disconnected sensor and remove its jumper to enable a reading If the reading is correct leave the sensor connected and check the remaining sensors one at a time in the same fashion If any good readings are obtained the PC board is probably good and each sensor giving a good reading is OK Replace any bad sensor encountered If no good reading is obtained with any sensor the PC board is probably bad and should be replaced If all pressure sensors read OK one or both of the TDS Conductivity sensors may be bad A 1500 OHM RESISTOR CONNECTED TO ANY PRESSURE INPUT IN PLACE OF THE SENSOR SHOULD GIVE APPROXIMATELY A MID SCALE READING EXAMPLE A 400 PSI SENSOR SHOULD READ APPROXIMATELY 200 PSI Method 2 DVM available With power applied and a DVM setting range of 20VDC or better measure th voltage between the bottom and top terminals of P5 TDS SENSOR SH and A 1 RD If the reading is less than 14VDC disconnect the red wire of each pressure sensor one at a time while observing the DVM If the reading jumps to approximately 15VDC after a wi
53. ctive the RO pump control relay will operate when the delay times out and the display will show the status of the RO system Refer to the SCREEN DESCRIPTIONS section of the manual for a description of the various display screens Shutdown conditions are indicated by a flashing red alarm lamp and audible warning beeper The cause of the shutdown is shown on the first line of the display Warnings that do not shut down the system are indicated by a steady red alarm lamp The status of any warnings can be displayed on the warnings Screen by pushing the Display key on the keypad If no warnings are active or if the Display key is pushed again a second Screen is shown that shows additional data If the optional flow sensing is enabled pushing the Display key again will show the flow data screen Pushing the Display key again returns the display to the main screen Tank Full Operation Two types of tank full operation are available If Dipswitch 2 is OFF single switch tank full operation is enabled In this mode if the tank full pump off switch input is activated after the time delay programmed in setpoint 24 Tank Full Delay the RO control relay will open shutting down the RO pump The display will now show TANK FULL When the tank full condition is removed the delay programmed in setpoint 25 Tank Full Restart Delay will be started This delay is in minutes When the delay
54. e ORP 00 99 10 value must meet the shutdown setpoint seconds before a ORP shutdown will occur ORP Operation The ORP is displayed by pushing the display key until the screen 2 is shown Pushing the display key again will advance the display to the next screen If the ORP value has reached one of the warning levels the alarm light will light and high ORP will be shown on the alarm display If the ORP value reaches one of the shutdown levels and is maintained for the time programmed in setpoint 61 ORP Delay the ROTrol will shutdown the RO pump flash the alarm lamp and sound the audible alarm The display will show the ORP shutdown message on the display The unit will remain shutdown until the reset key is pressed 39 PH SENSOR ROTROL IID PC BOARD NOTE PARTIAL VIEW FLOW BOARD I INSTALLED THE BOARD WELL MOUNT ON TOP OF THE FLOW BOARD CABLE PREPARATION BLACK JACKET 5 USING A SHARP KNIFE very CAREFULLY REMOVE APPROX 1 OF WIRE BRAID S LEAR JACKET THE BLACK INNER JACKET pH SENSOR CABLE C CENTER CONDUCTOR 4 U USING A SHARP KNIFE CAREFULLY REMOVE APPROX 1 4 OF THE SHIELD 5 CLEAN THE CLEAR JACKET WITH ALCOHOL OR VERY CLEAN WATER AND DRY THOROUGHLY THE BLACK JACKET IS IMPREGNATED WITH 1 USING A SHARP KNIFE CAREFULLY REMOVE APPROXIMATELY GRAPHITE WHICH WILL AFFECT THE READING IF ANY PARTICLES 1 1 2 OF THE OUTER JACKET CONTAMINATE THE SURFACE OF THE CLEAR
55. e White sensors Consult R amp D Specialties for wiring instructions for other types of flow sensors Flow Meter Calibration For each flow sensor installed the corresponding meter factor setpoints should be programmed The meter factor is determined by the pipe size type of fitting the sensor is mounted in and whether the flow is in GPM LPM or M3H The meter factors may need to be adjusted to compensate for flow differences under actual conditions The K factor is entered as a 4 digit number If the flow rate indicated is too low the meter factor should be lowered If the rate is too high the meter factor should be raised Refer to Figure 14 The displayed flow can be in GPM LPM or M3H as selected by Setpoint 53 Flow Unit of Measure Program Setpoint 53 to 0 for GPM 1 for LPM or 2 for M3H NOTE The K factor for each flow sensor may need to be changed when the unit of measure is changed If the K factor for a meter is programmed to 000000 that meter is disabled and any reading based on that meter will show as dashes on the display 32 R amp D SPECIALTIES ROTROL RO2 D REV FLOW METER INTERFACE PERMEATE FLOW CONCENTRATE 3 FLOW ROTROL PC BOARD PARTIAL VIEW RECIRCULATE FLOW NOTES TERMINAL STRIP WIRING 1 J1 J3 PROGRAM THE CIRCUIT 2 EACH INPUT IS INDEPENDENTLY TO INTERFACE W METER SIGNALS PROGRAMMABLE ALLOWING METE
56. ely if the Aux RP switch is on and the tank low input is not active Tank Low Operation If the tank low switch input is activated the Aux RP control relay will open after the delay programmed in setpoint 27 Tank Low Delay When the input becomes inactive the Aux RP control relay will operate after the delay programmed in setpoint 19 Aux Start Delay Operating Hours The counter that shows the current operating hours is displayed on screen 2 Figure 10 This is the number of hours that the RO pump has run This counter can be cleared or set to a specific number by programming Setpoint 16 Current Op Hours Setpoint 17 Maximum Op Hours can be programmed to give a warning when the unit has operated for the number of hours programmed in this setpoint If programmed to 00000 this warning is disabled 23 Temperature Alarm Setpoint 33 Temperature Limit can be programmed to shut down the unit if the measured temperature exceeds this setpoint A time delay for this limit is provided with Setpoint 34 Temperature Delay If Setpoint 33 is programmed to 000 this alarm is disabled Sensor Unit of Measure Setpoints 51 PSI BAR 52 F C and 53 GPM LPM M3H allow the pressure temperature and flow unit of measure to be changed to meet customer requirements NOTE If the flow unit of measure is changed the K factor for each flow sensor must also be changed
57. em status and all sensor and switch input status on an easy to read backlit display User programmable setpoints are provided that allow fast and easy adjustment of system parameters Plug in terminal strips allow easy wiring of all sensors and controls The ROTrol II contains relays for control of an inlet valve RO pump aux repressurization pump and a membrane flush valve SPECIFICATIONS POWER 120VAC Optional 240VAC 24VAC 50 60 Hz 25 Watts ENVIRONMENT 22 F 30 C to 140 F 60 C 0 95 RH noncondensing ENCLOSURE 12 X 10 X 6 305mm X 254mm X 152mm NEMA 4X Larger enclosures are provided when motor controls are incorporated DISPLAY 4 line X 20 character backlit SWITCH INPUTS Tank full pump ON switch Tank full pump OFF switch Tank low switch Low feed pressure switch High pump pressure switch Pretreatment RO lockout switch SENSOR INPUTS Permeate TDS Conductivity Standard 0 250 PPM uS Optional 0 50 0 100 0 500 or 0 1000 PPM uS OPTIONAL SENSORS Feed TDS Conductivity 0 250 0 500 0 1000 0 2500 0 5000 PPM uS Feed pressure sensor 0 250 PSI Pump pressure sensor 0 500 PSI or 0 2500 PSI Prefilter differential pressure sensor 0 250 PSI Membrane differential pressure sensor 0 500 PSI SPECIFICATIONS Permeate flow meter Concentrate flow meter Recirculate flow meter Feed pH 0 12 pH RELAY OUTPUTS Inlet control 5
58. lectrode Warranty The manufacturer warrants that at the time of shipment the pH electrode shall be free from defects in material and workmanship and shall perform within stated specifications upon initial installation If the electrode proves to b defectiv within the above warranty the manufacturer will replace th lectrode with a similar model or product 38 ORP Monitoring The optional ORP monitoring allows the ROTrol to monitor feed water ORP The range of ORP monitored is from 0 750mV Setpoints are provided to allow warnings or shutdowns for a high ORP condition The ORP sensor is mounted and wired in a similar fashion to a pH sensor Refer to the pH section for these instructions ORP Setpoints REMEMBER TO CHANGE JUMPER J5 TO OFF IF CHANGING A SETPOINT AND MOVE J5 BACK TO THE ON POSITION WHEN COMPLETE SETPOINT DESCRIPTION RANGE DEFAULT 58 pH ORP Selects pH 0 or ORP 1 0 1 0 Operation 59 ORP LIMIT If the ORP reading rises 000 750 000 to or above this value a high ORP mV alarm will be displayed Set to 000 to disable alarm 60 ORP SHUTDOWN If the ORP reading rises 000 750 000 to or above this value a high ORP mV shutdown will occur after the ORP delay has timed out Set to 000 to disable the shutdown 61 ORP DELAY This is the time th
59. n on the RO equipment using either the four mounting ears provided with the unit or the optional panel mounting brackets Note All terminal strips plug in and all terminals are labeled Terminal Strip Jumper and Adjustment Locations Refer to Figure 3 for the location of all terminal strips and connectors Figure 3 also shows all jumper and adjustment locations Figures 4 6 show sample wiring diagrams for various power pump and valve voltages Power Wiring Refer to Figures 3 6 for terminal strip locations and wiring options AC power for the unit is connected to terminal strip P3 The unit is configured for 120VAC operation standard Optionally 240VAC and 24VAC units are available Wire the correct voltage for the unit to P3 terminals L1 and L2 Pump and Valve Relay Outputs The ROTrol provides a contact closure to control the pumps and valves that are controlled by the unit These contact closures DO NOT supply power on their own The power to operate the pump or pump contactor and the power for the valves must be supplied to the relays This configuration allows the pumps and valves to be operated with different voltages if required One wire of the incoming power for a pump being controlled should be connected to the odd n e terminal for that pump P6 One wire of the pump will be connected to the eve terminal The other wire from the pump will connect to the other wire
60. nd program this value in Setpoint 56 For example to disable the shutdowns for high pump pressure and high temperature the value programmed in Setpoint 56 would be 2 4 6 RO System Shutdown Reset Low feed or high pump pressure shutdowns can be reset either manually or automatically The high TDS conductivity shutdown and the high feed temp shutdown can only be reset manually For manual reset push the RESET key on the front panel twice Automatic reset is controlled by setpoint 20 Automatic Reset Timer If programmed to 00 automatic reset is disabled and all shutdowns must be reset manually If a time is programmed into this setpoint when the RO system is shutdown due to low feed or high pump pressure th automatic reset timer is activated When the timer times out the RO system is reset and the RO system will operate if the fault causing the shutdown has cleared Pretreatment Lockout In systems where softeners or filters are used ahead of the RO unit a pretreat lockout input is provided to shutdown the RO unit When a pretreat unit goes out of service due to regeneration or backwash and the pretreat lockout contact activates the RO unit will shutdown after the delay programmed in setpoint 21 Pretreat Lockout Delay When the contact activation is removed the RO unit will automatically restart Membrane Flush Several modes of membrane flush a
61. nput is closed The relays have red LED lamps DS11 through DS14 that indicate when a relay is energized Green LED DS1 indicates that power is applied to the board and amber LED DS8 blinks when the CPU chip is operating properly Make a note of which lamps are on what is indicated on the display and any actions that were performed prior to the problem occurring This information can be an aid in troubleshooting the unit Refer to Figure 3 for the location of terminal strips the fuse LEDs and adjustments TOOLS TEST EQUIPMENT Although most problems can be solved using the built in aids discussed above some problems can be solved faster using additional test equipment A digital voltmeter DVM one or more 1500 ohm 1 2 watt resistors a 10 000 ohm 1 2 watt resistor and a 33 000 ohm 1 2 watt resistor will greatly enhance your ability to pinpoint some problems quickly Refer to Figures 18 20 for further troubleshooting procedures SPECIFIC PROBLEMS System Inoperative Is the green 5V LED DS1 lit Is the amber CPU ACTIVE DS8 lamp blinking If no check the power source circuit breaker usually Then check the power wires connected to P3 L1 amp L2 either visually or measure between them with a DVM If they are tight in the terminals or the DVM shows the correct voltage at P3 Ll amp L2 check the fuse next to P3 and the fr
62. o return to the main display e e e e Flow Alarms Low and high flow rate alarms are available for the permeate and concentrate flows When the setpoints for these alarms are programmed to a value other than 0 the alarm lamp will light and the active alarm is shown on the alarm screen when the setpoint is exceeded 35 pH MONITORING The optional pH monitoring allows the ROTrol to monitor feed water pH Setpoints are provided to allow warnings or shutdowns for high and low pH conditions The pH interface board is mounted to the main board in the upper left corner of the board see Figure 15 or to the optional flow meter interface board The pH and or flow interface boards may be removed to allow easier wiring of the analog sensors to their terminal strip To remove the pH board remove the 2 screws holding the board and lift straight up on the board to unplug it from the connector If the optional flow meter interface board is installed remove the spacer and 2 screws holding the flow board in place and lift it from the connector After the analog sensors have been wired install the flow meter interface board if used and wire any flow sensors Install the pH board and wire the pH sensor to the terminal strip pH Sensor Mounting WARNING THE END OF THE pH SENSOR
63. ont panel power switch and wiring to P3 If checking visually look for loose wires a broken switch or a blown fuse located to the left of P3 If using a DVM measure the voltage between L1 and the top terminal of P3 and between L1 and both ends of the fuse clip Correct any problem s found If no problems are found the PC board is probably defective and should be replaced 42 Display Blank Turn the power off and back on If the POWER ON LED DS1 and CPU ACTIVE LED DS8 are not on see System that the display cab ribbon cable solder cable appears intact checks reveal a probl em the RO Pump Will Not Operate The RO pump will not operate if the RO pump switch is off an RO pump restart time delay is active the tank full input is present a low or high pressure shutdown has occurred or the pre treat lockout signal is present First turn the RO pump switch on then check to see if the relay LED DS14 is on If it is and the pump will not run try adjusting the display contrast control display should be replaced Inoperative above If DS1 is on and 058 is blinking ensure le is plugged into the display connector P2 and inspect the connections on the display board for broken wires If the If none of these check all the wiring from P6 to the RO pump o
64. r warranty consideration must have a return authorization number and be properly packaged shipped prepaid and insured This warranty is valid only when the products are properly installed maintained and used for the purpose for which they were designed Misuse neglect damage accident improper repair or modification not authorized in writing by R amp D Specialties will void this warranty There are no warranties expressed or implied including the implied warranties for merchantability or fitness for a particular purpose that extend beyond the limited warranty expressly stated above R amp D Specialties liability to any purchaser of its products whether in contract or in tort and whether arising out of warranties representations instructions installations or defects from any cause will be limited exclusively to repairing or replacing the product or any part thereof under the conditions set out above ii TABLE OF CONTENTS LIN s Sta ese L SPE CTP ROAR VON S ZI EM Sia Ged Mice Cae eo E FRONT PANEL CONTROLS AND INDICATORS 20068 6 os m9 ew ea ew ewes 3 TNS EAT ATION vem Rey ee oA ial 2k othe IR Ee een 4 Physical Install 99e oa oes OV ee Ge
65. r motor starter if equipped and to the power source feeding the motor with a DVM If voltage is measured betw n the power wire feeding the motor directly and both RO pump terminals of P6 either the wire from P6 to the motor is broken or loose or the pump motor is bad from the power source but not the other and DS14 is on If voltage is present on 1 terminal of P6 the relay is may be bad requiring the circuit board to be replaced Reference Figure 4 5 or 6 for correct wiring display Remember th If DS14 is off and the RO pump switch is on check the green LI 7 check the alarm lamp on the front panel SYSTEM OPERATION in this manual EDs above P4 DS2 and note all readings on the LCD Se indicators and LCD readings and read through the section Using both the knowledge of how the unit operates and the indications shown by the LEDs and LCD you should be able to determine whether the problem is on or off the PC board malfunctioning level switch pressure switch etc If the unit is not responding correctly to the nit input switches etc the PC board should be replaced signals feeding the u Inlet valve will not The inlet valve will not operat be no shutdown alarms present operate unless the RO PUMP switch is on Also there must the unit must not be in any restart time delay period and it must not have
66. re available In all modes the RO system will flush for the amount of time programmed in setpoint 29 Membrane Flush Time The flush mode is selected using Setpoint 31 Flush Mode The Flush Table Figure 8 shows the various types of flush modes and the value that must be programmed into Setpoint 31 to enable the selected flush mode The operation of each flush mode is described below 22 FLUSH TABLE ELAPSED TIME ELAPSED TIME TANK FULL OFF HOURS OFF HOURS TANK FULL RO START STOP Figure 8 TANK FULL The RO unit will go into flush each time a tank full condition occurs OP HOURS A flush will occur each time the RO pump has operated the number of hours programmed in Setpoint 30 Flush Interval ELAPSED TIME A flush will occur each time the number of hours programmed in Setpoint 30 Flush Interval has passed OFF HOURS A flush will occur each time the RO pump has been off for the number of hours programmed in Setpoint 30 Flush Interval NOTE If the unit is off due to a pretreat lockout condition the RO will not flush START STOP The RO unit will flush each time the RO starts and stops The tank full flush can be combined with any of the 3 interval flush types A manual flush may be initiated at any time by selecting Function 2 Auxiliary Repressurization Pump Operation On power up the Aux RP system will start immediat
67. re is disconnected that sensor or its cable is bad With the bad sensor disconnected all other pressure readings should read correctly If all pressure sensors are disconnected and the 15VDC is still not correct disconnect the red wires on the TDS Conductivity sensors one at a time and if the 15VDC returns the sensor disconnected at the time the 15VDC appeared is bad and should be replaced If the 15VDC reading is correct with all sensors connected measure between each pressure sensor s BK terminal and the bottom terminal of P5 The valid voltage range is 1 5VDC for these readings If any sensor black wire is outside this range it is probably bad If the reading is extremely high 7VDC or better it may over drive the analog circuitry on the PC board and cause all readings to be bad Disconnect any bad sensor s and the other sensors should read correctly If all readings appear to be wrong one or more sensors may be bad or mis wired or the PC board may be bad Check for bad sensors and wiring errors as explained in the previous section Also ensure that each sensor is of the correct range and installed in the correct location No TDS Conductivity or temperature readings Check the wiring for each sensor Also if the feed sensor is not reading verify that jumper J12 is removed Both TDS Conductivity sensors have temperature outputs b
68. s desired to shutdown the RO unit when a pre treatment System is out of service a lockout switch can be wired to the P4 terminals P T L O The pretreatment equipment must provide a switch output when out of service Alarm Divert Outputs An alarm output a divert output are available on P4 These outputs are open collector transistor outputs that pull to ground when active The maximum load limit for each output is 100mA These outputs can be used to signal a remote alarm unit such as R amp D Specialties RA series of remote alarms or can operate an external 12VDC relay An optional relay expander board is available that provides a SPDT relay output for each of these outputs Refer to the Alarm Divert Relay section for more information on this option Alarm Output The alarm output is available at P4 pin 14 01 This output can be used to signal a R amp D Specialties RA series of remote alarm by using the common at P4 pin 13 C and the alarm output at P4 pin 14 01 An external 12VDC relay can be connected to this output by connecting 1 side of the relay coil to P4 pin 14 01 and the other side of the relay coil to P4 pin 16 12 Divert Output The divert output is available at P4 pin 15 02 This output can be used to signala R amp D Specialties RA series of remote alarm by using the common at P4 pin 13 C and the divert output at P4 pin 15 02 An ex
69. splay If after turning the adjustment screw several turns from its original position both directions no reading appears the pH board should be replaced If there is some reading on the LCD display but it is incorrect and does not change with a known change in the pH of the solution surrounding the sensor the pH sensor is probably bad Inspect it and its wiring as explained above and correct any problems found or replace it If the sensor is repaired or replaced and the reading does not change the pH board should be replaced If the LCD reading appears incorrect but changes as the pH of the measured solution changes it may be necessary to calibrate the pH board Refer to the pH section for calibration instructions Erratic readings can be caused by electrical currents in the fluid stream If the pH electrode is removed from the piping calibrates correctly and the reading is stable until the electrode is installed into the piping this could be the problem The electrode should be installed in a metal tee that is grounded to a good earth ground S recommended installation shown in Figure 15 47 4 20 MA ANALOG INPUTS PRESSURE AND TEMPERATURE PERMEATE TESTI NSOR POWER COND TDS TO CHECK THE 15V DC SUPPLY WHICH POWERS ALL 4 20 MA PRESSURE AND TEMPERATURE SENSORS CONNECT THE DIGITAL MULTIME
70. t f from the connector To remove the flow board remove the thr Screws or if the pH board was removed the 2 screws and 1 spacer holding the flow meter interfac board and then lift straight up on the board to unplug it from the connector After wiring the analog sensors the board is reinstalled by aligning the pins of the connector with the holes in the bottom of the meter interface board and pushing the board into place The mounting screws are then installed to secure the board Flow Sensor Wiring A maximum of three flow sensors may be installed Each sensor is wired to its corresponding terminal strip on the flow interface board For Signet type flow sensors the wires connect as follows The red wire to the top terminal the black wire to the middle terminal and the shield wire to the bottom terminal see Figure 13 The jumper above each terminal block should be connected to the middle and right pins for most Signet sensors For Burkert flow sensors connect the red wire to the top terminal the black wire to the middle terminal and the shield wire to the bottom terminal The jumpers should be connected to the middle and left pins for Burkert sensors For Blue White flow sensors connect the red wire to the top terminal the shield wire to the middle terminal and the black wire to the bottom terminal The jumpers should be connected to the middle and left pins for Blu
71. t voltage is d also be present at the terminal other wires with N O when DS11 C when DS11 is off If DS11 is on and no voltage board should be replaced 43 Aux RP pump will not operate The Aux RP pump will not operate if the AUX switch front panel is off the Aux Start Time Delay is active or the Tank Low input is present Turn the AUX Switch on if off and check the LED DS13 If DS13 is on check the pump motor wiring as explained above in the RO pump section If DS13 does not light check DS5 If DS5 is on the Tank Low input is present and the pump should not start If necessary correct the Tank Low condition and then re check the unit for correct operation If the Tank Low LED DS5 is off the AUX Switch is on and DS13 does not light check Setpoint 15 If the unit has shut down the AUX output because the Tank Low input had been present the unit will not restart until the time set into Setpoint 15 has expired Allow the amount of time selected by Setpoint 15 to elapse and if the AUX output still does not occur the PC board is bad and should be replaced RO unit not flushing or not flushing correctly NOTICE If your CPU version ends with S see Figure 3 for location of CPU you have a custom chip and should have a manual addendum explaining the correct flush operation if different from the standard variations explained in the section SYSTEM OPE
72. ter PPM uS 32 The permeate water PPM uS Line 2 of the display shows the inlet and pump discharge pressures PUMP NLET 37 The inlet pressur 194 The pump discharge pressure Line 3 of the display shows the pump feed and concentrate pressures FEED 3 The pump feed pressur CONC 178 The concentrate pressure Line 4 of the display shows the system flow rates lou 1 6 1 6 The permeate flow CW The concentrate OW The recirculate OW 30 ADJUSTMENTS I To calibrat th TDS Conductivity zero PERM ZERO with the adjustments conductivity value and adjust the permeate TDS Conductivity span control so the display reads the correct The optional feed TDS Conductivity is cal ZERO and disconnecting the gr the corresponding Zl water circulating through each cell measur If the unit is TDS Conductivity Calibration permeat TDS Conductivity A control adjust th cell clean and dry Immers th cell in a test F SPAN in service cells instal n wir Lled of the cell from the terminal ERO control to obtain a zero reading on Reconnect the green wire and start up the RO unit permeat for a reading of zero on the display Refer to Figure 3 for the location of the solution with a known TDS or same manner
73. ternal 12VDC relay can be connected to this output by connecting 1 side of the relay coil to P4 15 02 and the other side of the relay coil to P4 pin 16 12 LCD CONTRAST R amp D SPECIALTIES ROTROL II Ire 2 802 0 rve O B jk FEED PRESSURE tr SENSOR PUMP PRESSURE SENSOR MEMBRANE DIFF PRESS SENSOR PERMEATE COND TDS SENSOR FEED COND TDS SENSOR 3 Oj ees PS oe d sod a LJ LJ LJ LJ LJ su es 38 25 g 25 pa BG 28 ss 20 3D ab 58 fr dg f d ROTROL 110 CIRCUIT BOARD LAYOUT Figure 3 RO2 D REV MADE 1998 R amp D SPECIALTIES ROTROL II O USA dium 5 o RED 5 TO POwER Se i M NELLE a PUMP PRESSURE SENSOR BLACK i PREFILTER DIFF PRESS SENSOR BLACK MEMBRANE DIFF T PRESS SENSOR T NOTE ALL OUTPUTS ARE UNPOWERED RELAY CONTACTS MEMBRANE FLUSH AUX PUMP Ed H 4 m COND TDS SENSOR p Y oW 522224 n K Quo CNET BARE O om 8 m 1 8 D _ S lt le G56 o lo Uo llo lo Mooi m LOW TANK LEVEL E Pi LEGEND WRE NON POWERED SWITCH INPUTS WIRE CONNECTION NO CONNECTION 69 LEVEL PRESS SWITCH SOLENO
74. the feed pressure switch input becomes active or if the analog inputs are enabl and the feed pressure sensor input drops below the value programmed in setpoin 01 Low Feed Pressure the low feed pressure shutdown will occur after th time delay programmed in setpoint 02 Low Feed Delay NOTE The low fee pressure alarm generated by the pressure sensor can be disabled by programmin Setpoint 01 to 00 The RO Pump control relay will open shutting down the pump and the alarm will begin to sound LOW FEED PRESSURE will show on display and the alarm lamp will flash The RO system will remain shutdown un reset a O rr O sz th Eu High pump pressure operates in the same manner except the pump pressure sensor input must exceed the value programmed in setpoint 03 High Pump Pressure and the delay is programmed in setpoint 04 High Pump Delay NOTE The high pump pressure alarm generated by the pressure sensor can be disabled by programming Setpoint 03 to 0000 If the system shuts down for a low or high pressure fault and the Setpoint 20 Auto Reset Time is programmed to a time other than 0 the time remaining before the system attempts the automatic restart is indicated after the cause of the shutdown on the first line of the display If Setpoint 20 is programmed to 00 the low or high pressure shut downs can
75. the system flow data Readings can be displayed for 3 flow meters If a flow sensor is not used the reading for that sensor and any readings based on that sensor will read 0 0 The readings will be in gallons or liters based on the flow unit of measure setpoint F 3 3GPM The feed flow rate This reading is the sum of the permeate and concentrate flows P 1 7GPM The permeate flow rate C 1 6GPM The concentrate flow rate R 1 8GPM The recirculate flow rate RCV 51 5 The calculated percent recovery based on the current flow rates 2448 D The estimated permeate flow per day based on the current flow rate TOTAL A totalizer of the permeate flow 12846 Warning Screen If the red alarm lamp is on steady a non shutdown warning is active To determine which warning is indicated push the display key The warning will be shown on the first line of the display If multiple warnings are active each warning condition will be displayed with a pause between each warning The warnings and descriptions are HIGH TDS COND The high TDS Conductivity setpoint has been exceeded OP HOURS EXCEEDED The RO operating hours setpoint has been exceeded HI PREFIL DIFF PRESS The prefilter differential pressure setpoint has been exceeded TANK LO The tank low switch input is active 28
76. times out the RO unit will restart The remaining delay time will be displayed during the delay period If Dipswitch 2 is ON the dual tank full switch operation is enabled In this mode 2 switches are used to provide pump off pump on operation When the upper Switch is activated the RO control relay will open shutting down the RO pump Tank full will show on the display When the tank level drops and both the upper and lower switches are no longer activated the RO control relay will operate after the Tank Full Start Delay programmed in setpoint 25 This time delay is in seconds and will be shown on the display during the delay period Tank Full Override Function 1 Tank Full Override allows the RO unit to be operated when it has shut down due to a tank full condition When this function is initiated the RO unit will operate for the number of minutes programmed in setpoint 26 Tank Full Override Time At the end of this time the RO unit will then shut down if the tank full condition is still active This feature allows the RO unit performance to be checked or samples to be taken when the RO unit is not operating due to a full tank 20 Low Feed High Pump Pressure Operation If dipswitch 1 is OFF only the pressure switch inputs are active If it is ON the switch inputs and the analog pressure sensor inputs are enabled If
77. u eue emm ONE HEMET eve BY Ru as HEN ue 4 ows 22 Membrane Lush 49e te e ue etie e ete e ene pne as 22 A uxilrary P Pomp Operation wr dot heer 23 TiO Wis ahd seh voi eye eae wae A Be Os eerie ale EE 23 Operating Re dee Sie ale eu Die edere ae e 23 Temperature vale ae wx Ue eene er er ne les or sel lei tie 24 Sensor Unit of ges cei ek Bee aes ee senik 24 Alarm SDUD ceu lea S DES 24 Divert OU DUE d erint dede ya ete ed aden e naa or rette Oa 24 SCREEN DES GREP TTONS c se bide aie eet Sib eer vele ie muse De s rae tie 25 SCreen dJ ei erue RUE emu Ne ed ea td Sr ee m ee 25 SG TOS D Z e nte madens te wena m dee te Rn eas to Re Ure abo 27 Sse oh once ov oe ee ewan ee Gece ey chew eeaw es Ge ge gts 28 Warning QCCteOen u ws eee Els ae Ed Gk es EE ito 28 SEAT CUPS CLS ST e wu rv rer ety tt tute A ence ce 30 ADJUSTMENTS 2 D untere sucre tie Re e vele e iple e ya e A sate EVO 31 TOSACODOU OPES Ca gator saei one utc eire 31 Display Contraste osese Chu BOE 31 G a techie 32 Elow Meter a2 Blow Meter
78. ut only one will be monitored and displayed J13 selects the temperature sensor to be monitored If the shorting block is plugged into the top 2 pins of J13 it will monitor the PERMEATE temperature sensor output If it is plugged into the bottom 2 pins it will monitor the FEED temperature sensor output If the temperature reading is bad and both sensors are present moving the shorting block to select the alternat Sensor may yield a good reading on the LCD If so the sensor originally selected is bad and should be replaced If neither sensor reads correctly try removing the red wires from all pressure sensors at terminal strip P5 If neither sensor reads 45 correctly now disconnect each TDS sensor s red wire at terminal strip P5 and P7 one at a time Move J13 to select the connected sensor and check the reading If the reading is good that sensor and the PC board are good Whether the reading was good or bad disconnect that sensor s black wire reconnect the second sensor s black wire move J13 s shorting block and check the LCD reading If at least one sensor gives a good reading that sensor and the PC board are good If any pressure sensor s was disconnected reconnect the wire s and ensure that the temperature reading remains good Replace all bad sensors found If no good reading was obtained the PC board should be replaced
79. y will show P 97 7 The percent rejection is calculated and displayed If the feed sensor is not installed or if either sensor reading is out of range the display will show REJ Es 31PSI If the optional feed pressure sensor is installed the feed pressure in PSI or BAR will be shown If the sensor is not installed the display will show F OK if the low pressure switch is not activated If the low pressure switch becomes activated the display will show F LO Pi 196 6 f the optional pump pressure sensor is installed the pump discharge pressure in PSI or BAR will be shown If the sensor is not installed the display will show P OK if the high pressure switch is not activated If the high pressure switch becomes activated the display will show F HI 68 F The permeate water temperature in F or C or if the feed sensor is installed the feed water temperatur 26 HRS 1734 l 38PSI P 7PSI Ap Screen 2 TH no alarms are present pressing the Display key advances the display to Screen 2 Screen 2 displays additional data for the ROTrol On all pressure readings the pressure shown will be in PSI or BAR based on the pressure unit of measure setpoint 51 HRS 1734 The number of hours the RO pump has operated

R&D Series Rotrol 2

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R&amp;D Series Rotrol 2

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R&D Series Rotrol 2