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1520/30e MANUAL - Lakewood Instruments

1. 35 6 5 5 2 Setup the 4 20 mA 36 6 5 6 System Setup 37 6 5 6 1 Process Parameters aaa 37 6 5 6 1 1 Damping sonoro eet eee 37 6 5 6 1 2 Temperature 38 505 135 PH per 9G 38 6 5 6 2 Init 39 6 5 6 3 Change the Security Password 39 6 5 6 4 Firmware Version 40 6 5 60 5 DIA SNOSTICS 2 5 ee cere neni denedepeneniese 40 6 5 6 6 Setting the Controller Model 40 Ier ere er en 40 6 5 8 Changing the Security Levels sess 41 7 0 M amp intendlice 42 7 1 Sensor 42 7 2 Flow Switch 43 To Replacing the u 44 5 0 Troubleshooting n Sun te erem 45 8 1 Error acce n 45 9 0 ad Service MMC 47 10 0 Drawings 10 1 Cooling tower Suggested installation 10 2 Chill loop Cooling tower suggested installation 10 3 pH jumper configuration 10 4 ORP jumper configuration 10 5 Wiring diagram for power connections 10 6 Wiring diagram for water meter inputs 10 7 Cooling tower sensor wiring pH 10 8 Cooli
2. PEF SOLUTION GROUND pH GND GND x E o SELECTOR SWITCH 115 230 VAC KA Q y RC3 P10 RC METER 8 R 5VDC GND l METER 1 5vnc f GND FLOW GND DIG IN P Gun DIG IN 1 SNILOV LS 4 01 ADIE ADS wor 655055000900500505099 ele RELAY 8 LAY 3 RELAY Max 4 EACH EXCEED 10 GND GND E GND GND NOTICE ON REPRODUCTIONS THIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF OSMONICS INC THEY ARE LOANED MERELY AND ON THE BORROWER S EXPRESS Lakewood AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY INSTRUMENTS WRITTEN CONSENT GIVEN BY THE LENDER TU THE BORROWER DIMENSIONING AND TOLERANCING PER ASME Y145SM 1994 TITLE MOTORIZED MATERIAL TOLERANCES UNLESS gp NS DECIMALS ANGLES BAR 4 20mA WIRING 1520 30 CHEM PUMPS XX SURFACE
3. METER 2 SECOND SOURCE MAKE JP nU TOTAM uev Lakewood UE Re Una UE TT Tre Achebe INSTALLATION DRAW COOLING TOWER 15 To nare 2 11 04 E xs mr mar em ERCECT RA isses ca REVISIONHISTORY RELEASE DGK 2 11 04 LRS 2 11 04 B CORRECTION TO TERMINAL BLOCKS UNLESS OTHERWISE SPECIFIED IF NO FLOW SWITCH IS USED SHORT OUT PINS amp 2 WIRE pH SEE DWG 1207165 1207168 To a 2 1207162 1207163 oo 1207164 5135 4 20mA SEE DWG 1207161 CONTACTING HEAD TYPE o WATER METER o e 8 o P WATER METER 2 8 D Dx 9 Duo LAN A O bWATER METER 1 E FLOW SWITCH AN DRUM SWITCH 2 DRUM SWITCH 1 OOOO0O00 AUTOTROL TURBINE NOTICE REPR Bls Lakewood INSTRUMENTS imas WIRING DIAGRAM FOR WATER xx se METER INPUTS ON 1520 30 UU NA 1 1940476 su Ex E 1240476 9b Hi TTE u i2 2535 2540 PADDLE WHEEL IMPORTANTNOTICE WARNING CHEMICAL FEED All electromechanical devices are subject to f
4. sese 17 DAG Water Meters 17 34 7 Drum Switch 17 3 4 8 4 20 mA Output Wiring cece 18 3 4 9 4 20 mA Input Wiring oeir Rr re Pee er ams 18 4 0 Functional Overview iere aro ere e adve ode ele coe eee 19 AV Eront Paneli a Io pM SS MUI us 19 4 2 20 4 3 LH 20 AAA 20 4 5 Security Eevels 3 21 UP he Controllers asss ats ai 21 6 0 Op t tion oE Controller tente ee nee meet 22 6 1 Process 22 6 2 Manual Operation of the Relays aa 23 6 3 Calibration of PH or u ettet 24 6 4 Mam MENU 25 6 5 Configuring the RelayS 25 6 5 1 Configuring Relays 1 4 sss 26 6 5 1 1 Disabled tea 26 65 12 ems 26 6 5 1 3 By Water Meter 27 5 6 5 1 5 By Feed Schedule sese 29 6 5 1 6 As an Alarm Relay 29 6 5 1 7 Configuring Relay 1 to Blowdown by Volume 30 6 5 2 Setting Up the Feed Schedule sss 31 0 5 3 SATAS niii une be Ioni 33 654 me ge p rng ege gone 33 6 525 4 20 mA 34 6 5 5 1 Setup the 4 20 mA
5. COOLING TOWER RETURN LINE USE A CORPORATION STOP LAKEWOOD INSTRUMENTS MODEL 29160 A SOLUTION LINE INJECTOR OR A DISPERSING PIPE THIS AIDS CHEMICAL WATER MIXING AND ENHANCES WATER TREATMENT CONTROL CAPABILITIES 3 3 1 1 Blowdown Valve Sizing If you know your required blowdown flow and pressure range you can use the chart below to determine the correct valve size If not consult your water treatment engineer Adjustable flow rate diaphragm valves require at least 10 psi 0 7 bar differential pressure to close If your water pressure is marginal use a supply water pressure actuated diaphragm valve or a valve designed to work with zero differential pressure Extremely dirty cooling water will plug diaphragm valves In such cases use a motorized ball valve and a globe valve for flow control A strainer ahead of the valve may be okay but you must flush it regularly If your flow lines are above 3 inch for large systems use a pneumatically operated butterfly valve e sure to provide isolation and bypass valves Refer to drawings in the back of the manual for examples of typical installations If your blowdown valve ever fails you need to be able to bypass it in order to service it BLOWDOWN VALVE SIZING CHART Pressure range Flow range Suggested Valve Size psi bar gpm Lpm inch cm 10 50 0 7 3 4 1 5 3 8 18 9 34 inch 1 9 cm 50 150 3 4 10 3 5 10 18 9 37 9 34 inch 1 9 cm 10 50 0 7 3 4 5 10 18 9 37 9
6. RELAY TIMEOUT longer than the user programmed 3 Check chemical levels in the drums or totes time and is unable to reach the setpoint 4 Verify operation of water meters 5 Momentarily shut off system flow to reset alarms l Check sensor wiring Alarm Flashing Temperature compensator not being 2 Verify Temperature Compensation setting in the OPENED TC properly read Process Parameters screen 2 Replace pH or ORP sensor l Check sensor wiring Alarm Flashing Temperature compensator not being 2 Verify Temperature Compensation setting in the SHORTED TC properly read Process Parameters screen 3 Replace pH or ORP sensor Motorized ball valve functions but will not remain open or closed as expected Deviation 21 5 pH from default or Deviation gt 200mV from default Calibration points less than 2 pH 200 mV apart The motorized ball valve is not indicating to the 1520 30e that it has actually reached the open or closed position You are trying to calibrate the controller to a value that is too far from the value the controller expects based on the input from the sensor You are trying to perform a two point calibration with two solutions that are too close to the same reading to allow a good calibration to occur Adjust the limit switch for the motorized ball valve Ne Initialize the calibrations and try again Check sensor operation in a cup of the system water
7. 1240476 11c REVISION REVISIONHISTORY WG PARTI DESCRIPTION DWNIDATE APVDIDATE A A RELEASE 11 LRS 2 11 04 CORRECTION TO TERMINAL BLOCKS UPDATED JUMPERS PSG 2 18 11 ERENTIAL R DIFFERENTIAL REFERENCE ON SHIELD H2 H2 Que SENSORS m 530 REF 3 REF SOLUTION GROUND P13 ND GND HTC pH TC ORP JUMPER CONFIGURATIONS OCCUR OU CS S S IRE SINGLE ENDED REFERENCE ON SHIELD BNC1 SENSORS HI REF II REF pus ORP COMBO p130 ue GND ND pH SINGLE ENDED REFERENCE ON BNC1 H2 H2 E CHO OO S NOTICE ON REPRODUCTIONS HS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF L k 4 AKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS aKcuwvoo LonEEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED INSTRUMENTS XCEPT IN THE LIMTED WAY AND THE PRIVATE USE PERMTTED BY WRITTEN CONSENT GIVEN Y THE LENDER TO THE BORROWER DIMENSIONING AND TOLERANCING PER ASME Y14 5M 1994 TITLE MATERIAL TOLERANCES UNLESS NOTED TEMAS ANGLES 1 520 30 s ORP JUMPER CONFIGURATIONS XXX FINISH DWN FSG SUE PN REV n A 1240476 10c REVISIUN REVISION HISTORY DGK 2 11 04 LRS 2 11 04
8. OR ALARM OUTPUTS XXX vi NC p EXT TP ut 3 9 27 on CHKD PEP DATE c 11 04 THIRD ANGLE 1240476 A CHEM PUMPS PROJECT N A DATE 27104 scat sheet 046 NO REV ALARM OUTPUTS LIBRARY PART VERSION N A NTS 1 OF 1 1240476 5a P N 1038130 REV B RLY1 HOT RLY1 HOT RLY2 HOT RLY3 HOT NO RLY4 HOT 115 230VAC 50 60 Hz UNLESS OTHERWISE SPECIFIED IF NO FLOW SWITCH IS USED SHORT OUT PINS 1 amp 2 WITH WIRE o REVISION HISTORY A A RELEASE DGK 2 11 04 LRS 2 11 04 B A CORRECTION TO TERMINAL BLOCKS PSG 4 14 06 BNC1 OOOO REF forumo rouno pH SEE DWG 1207165 1207166 1207162 1207163 1207164 GND TC GND n 1 CONTACTING HEAD TYPE rS PWR OUT OUT GND 4 20mA SEE DWG 1207161 WATER METER 8 GND WATER MET 5 DC GND METER 1 5 DC GND FLOW R zl ER 0 FLOW SWITCH SSSSSSSSSSSSSSSSSSSSS GND DIGIN 2 GND DIGIN 1 5 amp DRUM SWITCH DRUM SWITCH 1 WATER METER AUTOTROL TURBINE BLK_ 24VDC dr RED SIGNAL SHD GND SIGNET 2535 2540
9. inch 2 5 cm 50 150 3 4 10 3 10 15 37 9 56 8 inch 2 5 cm 10 50 0 7 3 4 10 15 37 9 56 8 1 inch 3 8 cm 50 150 3 4 10 3 15 20 56 8 75 7 1 inch 3 8 10 50 0 7 3 4 15 20 56 8 75 7 2 inch 5 1 50 150 3 4 10 3 20 30 75 7 113 6 2 inch 5 1 10 50 0 7 3 4 30 100 113 6 378 5 3 inch 7 6 cm 10 50 0 7 3 4 100 300 378 5 1135 5 4 inch 10 2 cm 14 3 3 2 Sensor Mounting The pH or ORP sensor should be mounted in the vertical position When using the plumbing with the Flow Switch be sure that the flow sight is in the upright position Avoid connections in dead leg sections of pipe An air pocket around the electrode tip will cause erroneous readings The sensor electrode should be in direct contact with the process flow 3 4 Electrical Installation 3 4 1 Incoming Power 115 230 VAC The Model 1520 30e can be powered from either 115 VAC or 230 VAC at 50 60 Hz There is a power selector switch located in the upper left hand corner of the control board To select the appropriate voltage simply slide the switch from one position to the other with a small screwdriver The Model 1520 30e controller comes with a power cord and female molded receptacles for the blowdown valve and chemical pumps The power cord and receptacles are rated for 115VAC If the controller will be powered by 230 VAC the power cord and receptacles will need to be removed and the incoming power and the relay outputs will need to be hard wired The i
10. 270704 sr REY N A pare 2717 um au 240476 A PROJECT LS DATE 25 1704 scace sheet PWO NO N jt Ur 1 1240476 15 P N 1038130 REV B UP REVISION HISTORY Update Plumbing DGK 2 11 04 LRS 8 11 04 TROLLER m ES 1520 30e BLEED VALVE X CHILLER CHILL LOOP 4 MAKE METER 2 NOTICE ON REPRODUCTIONS THIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF OSMONICS INC THEY ARE LOANED MERELY AND ON THE BORROWER S EXPRESS AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN BY THE LENDER TO THE BORROWER DIMENSIONING AND TOLERANCING PER ASME Y14SM 1294 TITLE MATERIAL TOLERANCES UNLESS NOTED DECUS ANGLES XXX FINISH DWN mare 2 17 04 Size zi N A O THIRD ANGLE Wr aevn LRS DATE 270704 scar sheet PWG NO NTS 1 18 LIBRARY PART VERSIUN XX SURFACE 1520 30e Lakewood INSTRUMENTS INS N
11. Check the calibration vs actual and perform a single point calibration if required FIRST POINT OF TWO 04 00 pH A two point calibration is not required for proper operation of the controller There is a factory default two point calibration in the programming Calibration Errors The controller will not be able to complete a calibration if any of the following alarms are present Opened T C Shorted T C High Reference Impedance or Open P T Band In addition the following errors may be received during the calibrations Deviation gt 1 5 pH from default Deviation 2300 mV from default This means that the input to the controller does not agree with the value that is being inputted by at least 1 5 pH units for pH or 300 mV for ORP The most common cause of this error is a bad or dirty sensor Calibration Points Less Than 2 pH Apart Calibration Points less than 200 mV Apart The two buffer solutions used during a two point calibration must be at least two pH units apart for pH or 200 mV apart for ORP for a good calibration 24 6 4 Main Menu The MAIN MENU of the 1520 30e looks like this MAIN MENU PROCESS RELAYS FEED SCHEDULE ALARMS WATER METERS 4 20 MA IN OUT SYSTEM SETUP CLOCK 0 The MAIN MENU can be accessed from the PROCESS screen by pressing CLR If CLR is pressed and the MAIN MENU does not appear the controller is probably in the VIEW ONLY security mo
12. SCREEN e Press 1 for MTRI or press 2 for MTR2 e The water meters can be configured for gallons or liters Press 1 for GALLONS or press 2 for LITERS e This will take you to the WATER METER TYPES screen as shown below 33 WATER METER TYPES 1 CONTACTING HEAD 2 PADDLE WHEEL 3 AUTOTROL TURB 1 IN 4 AUTOTROL TURB 2 IN e Use the keypad to select the type of water meter that you are using If CONTACTING HEAD is selected e You will be taken to the GALLONS OR LITERS PER CONTACT screen Use the keypad to enter the number of gallons or liters per contact for your specific meter then press ENT You will then be asked if you want to reset the total count for that meter to zero Press 1 for YES or press 2 for NO If PADDLE WHEEL is selected You will be taken to the K FACTOR screen Use the keypad to enter the K factor for your particular water meter then press ENT You will then be asked if you want to reset the total count for that meter to zero Press 1 for YES or press 2 for NO If AUTOTROL TURB 1 IN is selected e The controller will confirm that the AUTOTROL TURB 1 IN has been selected and you will be asked if you want to reset the total count for that meter to zero Press 1 for YES or press 2 for NO If the AUTOTROL TURB 2 IN is selected e The controller will confirm that the AUTOTROL TURB 2 IN has been selected and you will be asked if you want to reset the total count for that met
13. Switch Inputs The model 1520 30e will accept two drum switch inputs The drum switches are wired to terminal block P5 The drum switch input requires a digital contact Any digital contact rated for 24 VDC and 500 mA may be used Refer to the drawing in the back of this manual for wiring instructions 17 3 4 8 4 20 mA Output Wiring The model 1520 30e has one 4 20 mA output for pH or ORP This output can be isolated or non isolated externally powered or internally powered If the 4 20 mA output is internally powered then it is non isolated If the 4 20 mA output is externally powered then it is isolated The 4 20 mA output is wired to terminal block P2 on the right hand side of the control board Refer to the drawing in the back of this manual for wiring instructions 3 4 9 4 20 mA Input Wiring The model 1520 30e can accept a 4 20 mA input as the pH or ORP input The pH or ORP sensor is wired to a 4 20 device and the device is wired to terminal block P2 on the right hand side of the control board This input is a non isolated input and the controller powers it Refer to the manufacturer instructions for wiring of the sensor to the 4 20 mA input device Refer to the drawing in the back of this manual for wiring instructions 18 4 0 Functional Overview 4 1 Front Panel Figure 4 Model 1520 30e Front Panel with Display INSTRUMENTS MODEL 1520 3098 ENCLOSURE A sturdy NEMA 4X enclosure protects
14. change the year Press ENT Use the number keys to change the hour Press ENT Use the number keys to change the minutes Press ENT Use the number keys to change the seconds Press ENT Press CLR to exit this screen You must press ENT all the way through this menu for the settings to take affect 6 5 8 Changing the Security Levels The security level can be change to prevent any unwanted tampering of the controller To change the security level from Technician to View Only e From the Main Menu press 0 Note that 0 does not appear on the menu screen DROP SECURITY LEVEL TO VIEW ONLY ACCESS WARNING YOU SHOULD KNOW THE PASSWORD e Select YES to change the security level You will see the following screen VIEW ONLY PRESS ANY KEY The controller menu now functions at the VIEW ONLY security level To return to the Technician security level e Press the numeric password from any Process screen You will see the following TECHNICIAN PRESS ANY KEY Remember that following the first power up the Technician password is 2222 You may change the passwords in the SYSTEM SETUP menu 41 7 0 Maintenance Periodic maintenance is required to ensure trouble free operation of the model 1520 30e controller The following sections cover the required maintenance 7 1 Sensor Maintenance Routine maintenance is necessary in order to maximize the efficiency and accuracy of
15. for relays 1 2 3 and 4 can be programmed The lockout time prevents the other relays from operating until this time expires Setting this time to 0 00 will disable this feature NOTE All Times are in Hours and Minutes 32 6 5 3 Alarms The Model 1520 30e is equipped with both high and low pH or ORP alarms This menu option allows you to program the specific values for these alarms When a pH or ORP alarm is received it will appear as a flashing message in the middle of the display and any configured alarm relays will be activated Consult your water treatment specialist when determining the proper High and Low Alarm values for your system To get to the alarm settings e From the MAIN MENU press 4 ALARMS Use the keypad to enter a value for the high alarm Press ENT e Use the keypad to enter a value for the low alarm and press ENT HIGH ALARM 10 00 pH LOW ALARM 4 00 pH ENT ACCEPT CLR QUIT 6 5 4 Water Meters The 1520 30e series controllers will work directly with the following types of meters dry contacting head meters Seametrics open collector output meters Signet 2535 and 2540 paddle wheel meters and the Autotrol 1 inch and 2 inch meters Contact Lakewood Instruments for other types of water meters Both water meter inputs are programmed in the same manner To get to the water meter configuration screen e From the main menu press 5 WATER METERS This will take you to the WHICH WATER METER
16. i DRAWI OOP C PN REV 240476 404 76 8 REV 1038130 REV B REVISION REVISION HISTORY DESCRIPTION DWNIDATE APVDIDATE A A E LRS 2 11 04 A CORRECTION TO TERMINAL BLOCKS CORRECTED JUMPERS PSG 2 18 11 DIFFERENTIAL REFERENCE ON WIRE DIFFERENTIAL REFERENCE ON SHIELD e bo d 1 SENSORS SENSORS E REF 520 GLASS P13 ROUND souumon GLASS amp REFERENCE EE 521 SERIES BE pH JUMPER CONFIGURATIONS pH TC pH REF SINGLE ENDED REFERENCE ON WIRE SINGLE ENDED REFERENCE ON SHIELD eC BNC1 AC BNC1 F REF Il ISOLLITION GROUND lt 1 pa GND pH TC GND OOoOdQO Sees NOTICE ON REPRODUCTIONS HIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF L d LAKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS akewoo AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN INSTRUMENTS BY THE LENDER TO THE BORROWER DIMENSIONING AND TOLERANCING PER ASME Y14 5M 1994 MATERIAL TOLERANCES UNLESS NOTED 1520 30e i mE pH JUMPER CONFIGURATIONS FINISH PSG DATE 4 13 06 SIZE c E 1240476 5 en NWA
17. or buffer Clean sensor For a pH two point calibration the two solutions must be at least two pH apart For an ORP two point calibration the two solutions must be at least 200 mV apart 46 9 0 Factory Service Technical Support for Lakewood Instruments can be reached by calling 800 228 0839 or faxing 414 355 3508 Monday through Friday 7 30 a m 5 00 p m CST NOTE IF YOU CALL FOR TROUBLESHOOTING HELP PLEASE HAVE THE MODEL NUMBER SERIAL NUMBER AND ANY OPTIONS PERTAINING TO YOUR UNIT AVAILABLE FOR REFERENCE Mail and returns should be sent to Lakewood Instruments 7838 North Faulkner Road Milwaukee WI 53224 USA When any merchandise is to be returned to the factory please call and obtain a Return Goods Authorization RGA number and have the following information available e Customer s name address telephone and fax numbers shipping and billing e A hard copy purchase order number for cases where repairs or parts are required that are not under warranty 9 A contact person s name and telephone number to call if the equipment is beyond repair or to discuss any other warranty matter e Equipment model and serial numbers e Reason for return e g repair warranty incorrect part etc We will then fax to your attention an RGA form that must accompany the returned item NOTE THE RGA NUMBER MUST BE CLEARLY WRITTEN ON THE OUTSIDE OF THE PACKAGE S BEING RETURNED ANY I
18. the pH or ORP reading in cases where the reading is changing rapidly The default setting is 0 5 seconds The larger the time the slower the readings will change To change the damping value From the PROCESS PARAMETERS screen press 1 DAMPING e Use the keypad to change the damping time and press ENT 37 6 5 6 1 2 Temperature Compensation The model 1520 30e can accept a 10K PTC or 3K PTC temperature compensated or non temperature compensated pH or ORP input The temperature compensation for your sensor must be set in the model 1520 30e controller Refer to the manufacturers information for the temperature compensation values for your pH or ORP sensor To set up the temperature compensation From the Main Menu press 7 SYSTEM SETUP Press 1 PROCESS PARAMETERS Press 2 TEMP COMPENSATION Press 1 for NONE Press 2 for 3k PTC Press 3 for 10K PTC TEMPERATURE COMPENSATION 1 NONE 2 3K PTC 3 10K PTC 6 5 6 1 3 pH per 10 C The model 1520 30e has the ability to change the amount of temperature compensation for each C temperature change To change the amount of temperature compensation From the Main Menu press 7 SYSTEM SETUP Press 1 PROCESS PARAMETERS Press 3 pH per 10 C Use the keypad to enter a value for the amount of temperature compensation Press ENT 38 6 5 6 2 Initialization Initialization restores the factory default settings to th
19. 1 3 By Water Meter All four relays can be configured to operate for a specified amount of time based on a specified amount of flow through the water meter inputs MTR1 MTR2 or the sum of BOTH water meter inputs can activate the relay From the RELAY OPTIONS screen press 3 WATER METER Select either MTR1 MTR2 or BOTH as the trigger for the relay Use the keypad to enter the amount of flow before the relay is activated Press ENT Enter the amount of time that the relay will be activated This time is in minutes and seconds Press ENT 27 6 5 1 4 By Percent of Time The Percent of Time feature allows you to feed chemical strictly based by a percent of time This relay control scheme works in patterns of 20 second time blocks A relay is on for some multiple of 20 seconds and off for some multiple of 20 seconds Below is a chart showing how Percent of Time works over a 400 second example x 20 seconds on 20 seconds off lt 400 seconds 0 5 10 20 30 40 50 60 70 80 90 95 100 4 4 le gt 4 EA gt 4 x x x x 1 1 PA 94 A x x 1 400 second example is shown because it will cover the patte
20. ALS ANGLES N A x 1520 30e 1240476 E oer pem Tm Ee M NTS o 1 lemma PWR OUT OUT GND GND METER 2 5V DC GND METER 1 45v DC GND FLOW GND DIG IN 2 GND pie iN 1 OOOOOOOOOOOO OOOOO OOOOJ OOO REVISION REVISION HISTORY PART DESCRIPTION DWNIDATE APVDIDATE DGK 2 11 04 LRS 2 11 04 ICORRECTION TO TERMINAL BLOCKS PSG 4 13 06 NOTICE ON REPRODUCTIONS HIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF Lakewood AKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED XCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN INSTRUMENTS BY THE LENDER TO THE BORROWER TITLE MATERIAL TOLERANCES UNLESS NOTED 530 SENSOR WIRING FOR THE DECIMALS ANGLES N A Xs 1520 3906 OO 9 ST 1240476 scar Ser E A nits 1240476 6b REVISION REVISION HISTORY PART DESCRIPTION Eco owwbare APVDIDATE RELEASE DGK 2 11 04 LRS 2 11 04 CORRECTION TO TERMINAL BLOCKS PSG 4 13 06 METER 2 5 DC GND METER 1 5V DC GND FLOW NO
21. D INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED INSTRUMENTS NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN BY THE LENDER TO THE BORROWER DIMENSIONING AND TOLERANCING PER ASME 14 5M 1994 TITLE MATERIAL O ORP COMBINATION SENSOR WIRING 1520 30e XXX Dn FINISH DWN PSG DATE 4 12 06 5 CHKD DATE ANGLE 1 240476 PROJECT APVD SCALE SHEET DWG NO LIBRARY NTS 1 f1 1240476 8d REVISION HISTORY A RELEASE DGK 2 11 04 LRS 2 11 04 A CORRECTION TO TERMINAL BLOCKS PSG 4 13 06 I Q METER 2 5v DC GND METER 1 5V DC GND FLOW GND DIG IN 2 GND DIG IN 1 NOTICE ON REPRODUCTIONS HIS DRAWING THE DESIGN AND THE PATENTS COVERS ARE THE PROPERTY OF L k d LAKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS akewoo AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN INSTRUMENTS BY THE LENDER TO THE BORROWER TITLE MATERIAL TOLERANCES UNLESS NOTED 520 SENSOR WIRING FOR THE DECIM
22. ERS ARE THE PROPERTY OF Lakewood LAKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED INSTRUMENTS NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN BY THE LENDER TO THE BORROWER DIMENSIONING AND TOLERANCING PER ASME 14 5 1994 TITLE MATERIAL SSN pH COMBINATION SENSOR WIRING 1920 3908 IKD FINISH DWN PSG DATE 4 12 06 A Ed PN CHI DATE kas 1240476 ew 1240476 7c REVISION HISTORY DESCRIPTION ECO DWN DATE APVD DATE RELEASE DGK 2 11 04 2 11 04 PSG 4 12 06 PSG 1 12 10 CORRECTION TO TERMINAL BLOCKS CORRECTION TO SENSOR PSG 2 22 11 CORRECTION TO JUMPERS SOLUTION GROUND WHITE pong 1240473 ORP SENSOR IS SHSHSSIESsS Colas sedH 0000 NOTICE ON REPRODUCTIONS THIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF Lakewood LAKEWOO
23. FOR 00 00 MM SS PRO CALIB ENT RELAYS PRO CALIB ENT RELAYS 22 6 2 Manual Operation of the Relays All four of the relays can be operated manually To manually operate the relays Go to the Process screen Press You will be taken to a screen that looks like AUTO MANUAL 5 MINS 1 RLYI 2 RLY2 RLY3 4 RLY4 Press 1 4 CLR EXIT 1008 Press 1 4 to manually change the state of a particular relay If the relay is already on pressing that number will turn it off A five minute countdown timer will start After five minutes has expired the relay will return to automatic control A relay that is in manual control will stay in manual control until the five minutes expires even if this screen is exited The five minute timer helps to prevent damage to the system if a relay is left in manual WARNING Manual control overrides everything including the flow switch lockout Use care when operating relays manually with no flow in the system 6 3 Calibration of PH or ORP The pH or ORP requires periodic calibration Calibration is usually required after cleaning the sensor A single point calibration should always be performed with the sensor in the piping assembly with good flow past the sensor It is necessary to have an accurate reading of the system water to properly calibrate the controller A hand held pH or ORP meter that tests the sample works well for this purpose If the pH or O
24. LAKEWOOD INSTRUMENTS MODEL 1520 1530e WATER TREATMENT SYSTEM PH or ORP CONTROLLER INSTALLATION amp OPERATION MANUAL SERIAL 4 8 6 AJ L2J uad Al Lakewood Instruments 7838 North Faulkner Road Milwaukee WI 53224 USA Phone 800 228 0839 Fax 414 355 3508 http www lakewoodinstruments com 10 11 12 13 Lakewood Instruments Model 1520 30e Controller Quick Installation Sheet Install the controller on a flat non vibrating surface Use the four 4 supplied mounting feet Do not mount the controller to a steel object that has a large temperature change side of cooling tower etc This can cause water to condense inside the enclosure Open the front cover keypad of the Model 1520 30e Controller by turning the two holding Screws counter clockwise Install water meters chemical pumps plumbing assemblies and the pH or ORP sensor Configure Jumpers H1 and H2 for your sensor See drawings in back for instructions Wire the flow switch use jumper wire for no flow switch pH or ORP sensor water meters and 4 20 mA output input if applicable see drawing on back Ensure wiring connections are correct or damage may occur If doing a conduit installation remove receptacles and wire pumps and bleed valve directly to the terminals If using a motorized ball valve wire as per wiring instructions Refer to the instruction manual for more details Set the power selector switch to t
25. MAIN MENU FOR FEED SCHEDULE The relay has been configured to operate based on a feed schedule but the relay will not activate because the feed schedule has not been programmed yet 6 5 1 6 As an Alarm Relay All four relays can be configured as alarm relays Any alarm will cause the relay to activate These alarms include HIGH PH or ORP LOW PH or ORP OPENED TC SHORTED TC DRUM LEVEL 1 DRUM LEVEL 2 RELAY 1 TIMEOUT RELAY 2 TIMEOUT RELAY 3 TIMEOUT RELAY 4 TIMEOUT and the NO FLOW alarm From the RELAY OPTIONS screen press 7 ALARM RELAY The controller will respond with the following screen ALARM RELAY RELAY ACTIVE ON ANY ALARM PRESS ANY KEY NOTE A relay that is configured as an alarm relay will be activated any time any alarm including the NO FLOW alarm is present 29 6 5 1 7 Blowdown by Volume Relay 1 can be configured to Blowdown based on Volume When configured based on volume the relay will turn on after a specified amount of makeup volume occurs and will turn off after a specified amount of blowdown is met This relay configuration requires two water meters and the use of both water meter inputs one for makeup and one for blowdown To program RELAY 1 for BLOWDOWN by VOLUME Select 7 BLOWDOWN BY VOLUME in the RELAY 1 RELAY OPTIONS screen The following screen will appear MAKEUP WATER METER 1 MTRI 2 MTR2 Select the meter to which your makeup mete
26. PADDLE WHEEL HIS DRAWING THE DESIGN AND PATENTS IT COVERS ARE PROPERTY OF AKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS THAT THE Y WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN Lakewood INSTRUMENTS WIRING DIAGRAM FOR WATER METER INPUTS ON THE 1520 30e Ee T NTS 1 1 DIMENSIONING AHO TOLERENCING PER ASME 14 5 1994 MATERIAL TOLERANCES UNLESS NOTED DECIMALS ANGLES N A X FINIS N A DATE 4 14 06 CHKD DE o pamm MA TITLE XX SURFACE XXX REVISION HISTORY DESCRIPTION ECO DWN DATE APVD DATE RELEASE DGK 2 11 04 2 11 04 CORRECTION TO TERMINAL BLOCKS PSG 4 12 06 CORRECTED JUMPERS PSG 2 22 11 m PESE 1240472 pH SENSOR ooo0gecooooooopoooooooosooog IS SSGHSSSSHggl ag sags 558 NOTICE ON REPRODUCTIONS THIS DRAWING THE DESIGN AND THE PATENTS IT COV
27. PPEAR IN THE RELAY OPTIONS SCREEN FOR RELAY 1 6 5 1 1 Disabled Relay 1 can be disabled When a relay is disabled it will not energize e From the RELAY OPTIONS screen press 1 Disabled to disable the relay 6 5 1 2 Based On Setpoint To set up a relay to operate based on a setpoint Press or select 2 SETPOINT The following screen will appear BASED ON SETPOINT 1 SETPOINT VALUES 2 WHEN TO FEED SETPOINT In the SETPOINT VALUES screen you will set the SETPOINT the DEADBAND and the amount of time for the TIMEOUT alarm The SETPOINT is the pH or ORP value that you are trying to maintain Check with your water treatment engineer to determine the pH or ORP setpoint for your system needs Follow these instructions to establish the controller s setpoint Press 1 or highlight SETPOINT VALUES and press ENT Use the keypad numbers to enter the proper pH or ORP setpoint and press ENT When finished you will automatically be prompted to set the deadband 26 After the setpoint is established the controller s deadband must also be set Deadband refers to the amount of pH or ORP above and below the setpoint a range within which the controller will not react Due to continuous fluctuations in the pH or ORP level it is necessary to have this deadband range or stable readings will be difficult to obtain The Deadband should be a small percentage of the setpoint Half the dea
28. RP sensor is connected to a 4 20 mA device follow the manufacturer instructions for calibrating that device If the pH or ORP sensor is directly wired to the 1520 30e controller follow these instructions for calibration e Ensure that the controller is operating with good flow past the sensor e Take a sample of the water and measure with a hand held pH or ORP tester From the PROCESS screen press PRO to enter the calibration screen CALIBRATION 1 SINGLE POINT 2 TWO POINT 23 For a Single Point Calibration e Press 1 SINGLE POINT e Use the keypad to input the pH or ORP reading from the hand held Press ENT e The controller will respond with CALIBRATION COMPLETE e Take another hand held sample to verify calibration ONE POINT CALIBRATION 08 04 pH For Two Point Calibration e Fora two point calibration two separate buffer solutions at least two pH units apart are required Press 2 TWO POINT e Place the sensor and solution ground wire if required in the first buffer solution allow the reading to stabilize e Use the keypad to input the pH or ORP value of the first buffer Press ENT e Place the sensor and solution ground wire if required in the second buffer solution allow the reading to stabilize e Use the keypad to input the pH or ORP value of the second buffer Press ENT e Return the sensor to the system and reattach the solution ground wire if required e
29. TEMS SENT BACK TO THE FACTORY WITHOUT AN RGA NUMBER WILL BE REFUSED AND RETURNED TO SENDER 47 Service Guide When calling Lakewood Instruments please have your controller s complete model number and serial number available together with the firmware version so that the Technician can better assist you Refer to the Ordering Information section of this manual for part numbered replacement parts Write your controller s complete model number serial number and firmware version here so that you will have them available if you wish to contact a Lakewood Instruments technician Model Number Serial Number Firmware Version 10 0 Drawings REVISION HISTORY B UPDATED PLUBING DGK 2 11 04 LRS 2 11 04 SERIES 1520 30e OR CONTROLLER COOLING TOWER E MAKE UP CHILLER METER 2 SECOND SOURCE MAKE UP NOTICE ON REPRODUCTIONS k d THIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY OF DSMDNICS INC THEY ARE LOANED MERELY AND DN THE BORROWER S EXPRESS a ewoo AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY INSTRUMENTS WRITTEN CONSENT GIVEN BY THE LENDER TO THE BORROWER DIMENSIONING AND TOLERANCING PER ASME Y14 5M 1994 TITLE TOLERANCES UNLESS NOTED PISS IN D R W I N G x EB 1950 3068 FINISH UGK nere
30. TICE ON REPRODUCTIONS GND HIS DRAWING THE DESIGN AND THE PATENTS IT COVERS ARE THE PROPERTY 0F Lakewood LAKEWOOD INSTRUMENTS LLC THEY ARE LOANED MERELY ON THE BORROWERS EXPRESS DIG IN 2 AGREEMENT THAT THEY WILL NOT BE REPRODUCED COPIED LOANED EXHIBITED NOR USED INSTRUMENTS EXCEPT IN THE LIMITED WAY AND THE PRIVATE USE PERMITTED BY WRITTEN CONSENT GIVEN GND LENDER TO BORROWER pic IN 1 TITLE OM ES 521 SENSOR WIRING FOR THE Xx SURFACE 1520 30e iN RS r s 1240476 A SCALE SHEET OWENO REV 1 1240476 5b SSGSSSSSSSSSSSSSSSSSSSSSSS NOTES UNLESS OTHERWISE SPECIFIED FOR INTERNAL 24VDC JUMPER WIRE IS REQUIRED 4 20mA INPUT FROM AN EXTERNAL 4 20mA pH DEVICE 4 20mA pH OUTPUT DEMCE NON ISOLATED 4 20mA OUTPUT WITH INTERNAL 24VDC POWER SUPPLY ISOLATED 4 20mA OUTPUT WITH EXTERNAL 24VDC POWER SUPPLY METER 5 OND METER 1 516 GND FLOV GND DIG IN e Oil mG nt Lakewood INSTRUMENTS E WIRING FOR THE 1520e 1240476 For more information call toll free in the USA 800 228 0839 Manufactured in the USA Lakewood Instruments 7838 North Faulkner Road Milwaukee WI 53224 USA Phone 800 228 0839 Fax 414 355 3508 http www lakewoodinstruments com
31. ailure from a variety of causes These include mechanical stress component degradation electromagnetic fields mishandling improper setup physical abuse chemical abuse improper installation improper power feeds and exposure While every precaution is taken to insure proper functioning extra precautions should be taken to limit the ability of over feeding by limiting chemical quantities available secondary shut downs alarms and redundancy or other available methods CAUTION POWER SOURCE AND WIRING Low voltage wiring and high voltage 110 plus should not be run in the same conduit Always run separately Even shielded low voltage is not a guarantee of isolation Every precaution should be taken to insure proper grounding and elimination of shorting or Electromagnetic field EMF interference WARNING ELECTRICAL SHOCK To reduce the risk of electrical shock this equipment has a grounding type plug that has a third grounding pin This plug will only fit into a grounding type outlet If the plug does not fit into the outlet contact a qualified electrician to install the proper outlet DO NOT change the plug in any way Lakewood Instruments We thank you for your selection and purchase of a Lakewood Instruments product With proper care and maintenance this device should give you many years of trouble free service Please take the time to read and understand this Installation and Operation Manual paying special attent
32. dband amount will be automatically put above the setpoint and the other half below it For example a pH setpoint of 7 50 pH with a deadband of 0 20 pH would result in the relay turning on at 7 60 pH and turning off at 7 40 pH Use the keypad numbers to enter the proper deadband setpoint and press ENT When finished you will automatically be switched to the TIMEOUT alarm screen TIMEOUT The TIMEOUT alarm is designed to notify the operator of a problem in the system such as a failed pump an empty chemical drum or a problem with the controller The relay timeout function is an alarm feature that is displayed on the 1520 30e series display process screen and it will turn off the pump If a relay is configured as an alarm relay the TIMEOUT alarm will energize the alarm relay To disable this function simply program 0 hours 0 minutes Use the keypad numbers to enter the time in hours and minutes before this alarm will appear and press ENT WHEN TO FEED The relay can be configured to operate either above the setpoint or below the setpoint When the relay is configured to operate above the setpoint the relay will turn on when the pH or ORP rise above the setpoint plus one half of the deadband When configured to operate below the setpoint the relay will turn on when the pH or ORP falls below the setpoint minus one half of the deadband In the WHEN TO FEED screen select either 1 ABOVE SETPOINT or 2 BELOW SETPOINT 6 5
33. de If the controller is in the VIEW ONLY security mode enter the security password to be able to access the MAIN MENU To move about in the menu screen use the and keys to highlight the desired option and press ENT or simply press the number key for the desired option Use the ENT key to accept a setting or to enter a screen Use the CLR key to reject a setting or to exit a screen From anywhere in the menu pressing CLR will take you one step closer to the MAIN MENU Each of the MAIN MENU options are discussed in detail later in this manual 6 5 Configuring the Relays To access the relay configuration screen from the MAIN MENU press 2 or highlight RELAYS and press ENT The following screen will appear WHICH RELAY 2RLY2 3RLY3 4RLY4 Select the relay that you want to program 25 6 5 1 Configuring Relays 1 4 All four relays can be configured to operate based on Disabled Setpoint Water Meter Percent of Time Feed Schedule or by Alarm In addition to the above Relay 1 can be configured to Blowdown by Volume When a relay is selected for programming the following screen will appear This is the RELAY OPTIONS screen The asterisk next to one of the options tells you how that relay is configured to feed RELAY OPTIONS 1 DISABLED 2 SETPOINT 3 WATER METER 4 PERCENT OF TIME 5 FEED SCHEDULE 6 ALARM RELAY 7 BLOWDOWN BY VOLUME NOTE ITEM 7 WILL ONLY A
34. e a Schurter 0034 1526 Littlefuse 217 010 or equivalent 10A 250V fast blow type for Fuse F1 and a Littlefuse 218 100 Schurter 0034 3107 or equivalent 100mA slow blow for Fuse F2 If a fuse is blown the display will be blank when the unit is connected to power Refer to the troubleshooting section of this manual for more information about blank displays 115 230V AC power selector switch 100mA 250V slow blow fuse 10A 250V fast blow fuse 44 8 0 Troubleshooting 8 1 Error Messages This section discusses some of the more common questions with the Model 1520 30e These notes are not intended to be all inclusive only to cover the most common situations If you have other questions or are need support contact the Lakewood Instruments Technical Service Department toll free at 800 228 0839 PROBLEM WHAT THIS MEANS CORRECTIVE ACTION See problem RELAY TIMEOUT Check the chemical pump operation OR PH PH or ORP is too high or low The chemical drum is empty OR ORP LOW with respect to the high or low Check the High or Low Alarm Value Check relay setpoints and deadbands alarm setpoint Insure the system is not overflowing There may be a problem with the wiring or the reed switch in the meter may be bad Approximately 5 volts DC should be present at the input terminal when the water meter contact is closed That should change to zero VDC when the contact opens Check these Wat
35. e controller The whole controller can be initialized or just the calibration It is suggested that you initialize the whole controller before you program the controller This will clear any random settings that may be in the controller To do so follow these instructions From the Main Menu press 7 SYSTEM SETUP Press 2 INITIALIZATION Press 2 WHOLE CONTROLLER and press ENT A warning will appear on the screen see below Press 1 to proceed 2 to cancel WARNING THIS OPTION MAY REQUIRE YOU TO RE CALIBRATE THE CONTROLLER ARE YOU SURE To initialize just the calibration Press 1I CALIBRATIONS instead of 2 WHOLE CONTROLLER in the procedure above The same warning screen will appear 6 5 6 3 Change the Security Password The security password can be changed from the factory default setting of 2222 to any four digit value that you desire To change the security password e From the Main Menu press 7 SYSTEM SETUP e Press 3 SECURITY e Use the keypad to enter the old password If the password has not been changed before the old password is 2222 e Use the keypad to enter the new password e Use the keypad to enter the new password a second time for verification If you lose your password contact Lakewood Instruments for assistance PASSWORDS ARE 4 KEYS ENTER A NEW PASSWORD OLD PASSWORD NEW PASSWORD VERIFY a 39 6 5 6 4 Firmware Version Somet
36. er meters not accumulating voltages and for correct wiring For water meters other than the contacting head type check the manufacturer s user manual for that particular water meter Is the controller configured for your type of water meter Alarm Flashing FEED SEQUENCE ACTIVE This simply indicates that a feed schedule relay is active No action necessary 1 Check the fuse F1 Replace with 5 x 20 mm 10A 250V fast blow fuse 2 Check the fuse F2 Replace with 5 x 20 mm There may be a problem with the 100mA 250V slow blow fuse incoming power the fuses or the Display is blank AER p ay circuit board Open the front panel 3 Does the unit have power to troubleshoot 4 If there is power to terminals AC and ACC on P1 call Lakewood Instruments Technical Service for more information 1 Theflow switch float may be stuck or no flow is present NO FLOW alarm 2 Flow switch may be bad Replace reed switch Flow input switch is not closed in plumbing assembly If no flow switch is used a jumper wire should be installed across the flow switch input Removing the jumper disables all relay outputs 45 PROBLEM WHAT THIS MEANS CORRECTIVE ACTION Check for proper operation of the pump or valve Use the manual relay control to help This indicates that the coritroller has 2 Check the relay configuration and verify settings Alarm Flashing been trying to operate a relay for
37. er to zero Press 1 for YES or press 2 for NO 6 5 5 4 20 mA IN OUT The model 1520 30e has one 4 20 mA output that is configured for pH or ORP The model 1520 30e has a 4 20 mA input that is used for a remote pH or ORP input to the controller 34 6 5 5 1 Set Up of the 4 20 mA Output To set up the 4 20 mA output e From the Main Menu press 6 4 20 mA IN OUT Press 1 4 20 mA OUT SETUP There are three things that can be done from the 4 20 mA Out Setup screen set the 4 20 mA range take manual control of the 4 20 mA output and calibrate the 4 20 mA output Below is the 4 20 mA Setup screen 4 20 MA OUTPUT 1 SET 4 20 MA RANGE 2 MANUAL CONTROL 3 CALIBRATE Set the 4 20 mA Range The 4 20 mA output range must be set for the output to be useful e From the 4 20 mA Setup screen press 1 Set the 4 20 mA RANGE e Use the keypad to enter a pH or ORP value for the 4 mA point Press ENT e Use the keypad to enter a pH or ORP value for the 20 mA point Press ENT Manual Control Manual control is used to temporarily change the 4 20 mA output e From the 4 20 mA Setup screen press 2 MANUAL CONTROL e Use the up and down arrow keys to raise or lower the 4 20 mA output To exit this screen and restore automatic control of the 4 20 mA output press CLR Calibrate The 4 20 mA needs to be calibrated to the actual output to be accurate A milliamp meter is necessary to calibrate the 4 20 mA ou
38. ers Process and Condensate systems e Removable power cord and receptacles for conduit installations Enclosure is rated NEMA 4X Four user configurable relays for pH or ORP control and chemical addition These relays can be configured in multiple ways including scheduled feed for biocide addition e Two 2 water meter inputs two drum switch inputs pH or ORP input flow switch input 4 20 mA output and remote pH or ORP input via 4 20 mA are all standard features e Designed with a single circuit board for high reliability and lower cost e Large open shallow enclosure for easy wiring Heavy duty stainless steel domed numeric keypad and illuminated graphical display allow for quick and easy programming Steel domed switches improve the tactile sensing and life expectancy of the keypad The Model 1520 30e controller stores all setpoints calibration values and relay configurations in an EEPROM An EEPROM does not require a battery to retain information so if power is lost these values will be retained for years The 1520 30e includes a capacitive backup device to retain information such as water meter totals and clock and calendar information The capacitive backup device will never need to be replaced and will hold data approximately 1 day after each power failure 8 2 2 BENEFITS e Easy to program the Model 1520 30e Controller uses an intuitive menu and programs identical to the Lakewood 2000 Series controllers Cont
39. he appropriate voltage 115 or 230 VAC For 230 VAC applications the power cord and receptacles must be removed Close the front cover keypad making sure both holding screws are tightened Plug in chemical pumps and bleed valve to controller unless hardwired as per step 5 Apply power to the 1520 30e controller press CLR twice press 7 System setup press 2 Initialization press 2 Whole controller press 1 Yes After initialization press the CLR key several times until you get to the main menu Press 1 Process Press ENT This screen allows manual control of the relay outputs to test the chemical pumps and bleed valve Press CLR to return to the Process screen Press CLR to get to the main menu Press 7 System Setup press 1 Process Parameters press 1 to set up the Damping Press 2 Temp Compensation select the temperature compensator for your sensor Press 3 to set up the amount of temperature compensation Press CLR several times to return to the main menu press 1 for the Process screen To calibrate pH or ORP take a sample with a handheld pH or ORP meter press the PRO button press 1 for a single point calibration or press 2 for a two point calibration type in pH or ORP value press ENT Program the 1520 30e relays for bleed and chemical feed schemes See instruction manual for more details REVISION HIST
40. iewed on the display at one time Use the and v keys to scroll through the options As an introduction here is a graphic overview of the first level of each option in the Main Menu to see how it operates Complete details of each option are provided later in this manual MAIN MENU PROCESS 2 RELAYS 3 FEED SCHEDULE 4 ALARMS 5 WATER METERS 6 4 20 MA IN OUT 7 SYSTEM SETUP 8 CLOCK 1 2 3 4 5 6 7 8 4 20 MA IN OUT SETUP THU 18 FEB 98 05 42 40 WHICH RELAY FEED SCHEDULE HIGH ALARM WHICH WATER 8 00 pH METER 14 20 MA OUT SETUP 1 BY WEEKDAY 24 20 MA IN SETUP 2 BY CYCLE CALENDAR pH HIGH ALARM 3 LIST SCHEDULE LOW ALARM RIA YA 6 00 pH 4 FIRMWARE VERSION 5 DIAGNOSTICS 6 CONTROLLER MODEL PRO CALIB ENT RELAYS 20 4 5 Security Levels The model 1520 30e has a security level to prevent tampering of the controller This security level is called View Only When the controller is in the View Only security level the menu is locked out and changes to the settings are not allowed The security level is password protected The default password is 2222 If the controller is in the view only security level just press 2222 on the keypad to access the menu This password can be changed in the main menu If the password has been changed input the new password in place of the 2222 above to unloc
41. imes it is necessary to verify the firmware version of the controller for troubleshooting purposes To get to the firmware version From the Main Menu press 7 SYSTEM SETUP e Press 4 FIRMWARE VERSION e The firmware version will be displayed along with a checksum value The checksum value is used to verify that the program has not been corrupted To exit this screen press any key 6 5 6 5 Diagnostics The diagnostics screen is used for troubleshooting purposes Contact Lakewood Instruments for assistance 6 5 6 6 Controller Model The model 1520 30e can be used for either pH model 1520 or for ORP model 1530 The CONTROLLER MODEL screen is used to configure the controller for pH or ORP To change the controller model e From the Main Menu press 7 SYSTEM SETUP Press 6 CONTROLLER MODEL e Press 1 1520 pH or 2 1530 ORP SELECT CONTROLLER 1 1520 pH 2 1530 ORP 6 5 7 Setting the Clock The clock uses the 24 hour or military time 06 00 00 is 6 a m 18 00 00 is 6 p m To set the clock e From the Main Menu press 8 CLOCK The following screen will appear MON 11 FEB 02 11 23 13 PRO CHANGE CLR EXIT 40 Press PRO to change the clock settings Use the up and down arrow keys to change the day of the week Press ENT Use the number keys to change the date Press ENT Use the arrow keys to change the month Press ENT Use the number keys to
42. ing the wire Refer to the drawing in the back of this manual for wiring instructions 3 4 3 Flow Switch Wiring The model 1520 30e has a flow switch input The purpose of the flow switch input is to disable the relay outputs on a loss of flow in the system The flow switch input requires a digital contact Any digital contact rated for 24 VDC and 500 mA may be used such as a relay driven by the recirculating pump Lakewood Instruments manufactures a flow switch plumbing assembly for use with the model 1520 30e in cooling water applications The flow switch is wired to terminal block P7 terminals 1 and 2 If a flow switch is not used then a jumper must be installed across the flow switch connections Refer to the drawings in the back of this manual for wiring instructions 3 4 4 Sensor Wiring The model 1520 30e uses the Lakewood Instruments pH or ORP sensors These sensors may be wired directly to the controller or to a 4 20 mA transmitter The maximum recommended wiring distance for sensors without a 4 20 mA transmitter is 15 feet Direct wired sensors are wired directly to the P13 terminal block and BNC1 on the upper right corner of the control board Refer to the drawing in the back of this manual for wiring instructions for each of the available Lakewood Instruments pH or ORP sensors 4 20 mA transmitters are wired to terminal block P2 The model 1520 30e controller powers this 4 20 mA device Refer to the drawing in the back of
43. ion to the sections on OPERATION and MAINTENANCE If in the future any parts or repairs are required we strongly recommend that only original replacement parts be used Our Customer Service Department is happy to assist you with your parts or service requests Lakewood Instruments Customer Service and Technical Support Departments can be reached by calling 800 228 0839 or faxing 414 355 3508 Monday through Friday 7 30 a m 5 00 p m CST Mail should be sent to Lakewood Instruments 7838 North Faulkner Road Milwaukee WI 53224 USA MODEL 1520 30e Table of Contents rr a e 7 2 0 Features Benefits and Specifications a 8 DQily usul auqa 8 DD lt i aaa asahan 9 9 2 4 Ordering Information ua 11 3 0 Unpacking Mounting and Installation SA shu u SSS S 5 2 6 cete cedere rct ds 3 3 Plumbing Installation eee uuu 3 3 1 Cooling Tower Plumbing 3 3 1 1 Blowdown Valve Sizing 14 SENSOLMOUNUN 15 3 4 Electrical Installation esee 15 3 4 T ncoming pwei uu uuu aap RIP iy 15 98 42 Relay ode obra E e T STO LR BUG RE 15 585 FlowsSwitch stetit min 16 3 4 4 Sensor WITING 16 3 4 5 Sensor Jumper Configuration
44. is the middle section and appears between the top and bottom sections It is solid in appearance and flashes showing the current active alarms in sequence if there are multiple alarms The bottom section has user selectable readings as shown below 1 DATE SCREEN 8 00 pH e There are many different screens available in the PROCESS screen These screens allow you to view the 3 MAR 04 units settings incl time setting relay set ups flow rates total flow etc without the danger of altering them Access 1 55 04 these screens by using the and keys to scroll through the available screens e Press ENT to manually enable a relay for testing or troubleshooting purposes e Press PRO to calibrate the pH or ORP PRO CALIB ENT RELAYS 2 ALL RELAY SCREEN 5 RELAY 2 3 4 SETTINGS 8 MTRI FLOW RATE 8 00 LOW PH FLOW RATE NO FLOW HIGH PH RLY RLY2 RLY3 RLY4 PRO CALIB ENT RELAYS RLY4 DISABLED 0 PRO CALIB ENT RELAYS PRO CALIB ENT RELAYS 3 BLOW SETPOINT SCREEN 6 TOTAL FLOW 9 MTR2 FLOW RATE OPENED TC DRUM LEVEL 2 RELAY 3 TIMEOUT RLY 1 SETPOINT TOTAL FLOW GALS MTR2 FLOW RATE GPM 8 00 pH 0 0 PRO CALIB ENT RELAYS PRO CALIB ENT RELAYS PRO CALIB ENT RELAYS 4 RELAY 2 SETTINGS 7 MTR2 TOTAL FLOW 8 00 pH 8 00 pH RLY 1 TIMEOUT SHORTED TC RLY2 BY MTR2 METER MTR2 TOTAL FLOW FEED AFTER GALS LTRS 0 0
45. k the menu 5 0 Starting Up the Controller Once the Installation is complete it is time to start up the controller Initiate sample flow to the controller by opening the sample line isolation valves Check for leakage Power up the controller by turning on the circuit breaker or plugging the power cord into a 120 VAC receptacle It is best to initialize the whole controller to remove any settings that may be in the memory before programming the controller Refer to section 6 5 6 2 of this manual to initialize the controller Configure the controller for the appropriate model 1520 for pH or 1530 for ORP Refer to section 6 5 6 6 If the pH or ORP input will be coming from a 4 20 mA device enable the 4 20 mA input by following section 6 5 5 2 If pH or ORP is not coming from a 4 20 mA device set up the temperature compensation for the sensor Follow section 6 5 6 1 2 Set the clock by following section 6 5 7 Set the high and low pH or ORP alarms by following section 6 5 3 Configure the relays for operation by following section 6 5 Calibrate the pH or ORP by following section 6 3 Verify operation of the controller before leaving the area 21 6 0 Operation of the Controller 6 1 Process Screen The screens that are used the most in the 1520 30e controller are the Process Screens Below are the process screen views The process screen has three sections The top section shows the pH or ORP reading The alarm bar
46. m the 4 20 mA IN setup screen press 2 ENABLE DISABLE e Press 1 to enable the 4 20 mA input or press 2 to disable the 4 20 mA input Calibrate The 4 20 mA input needs to be calibrated to the actual milliamp input to be accurate A milliamp meter is necessary to calibrate the 4 20 mA input Connect the milliamp meter in line with one leg of the 4 20 mA input Refer to the drawing in the back of this manual for wiring instructions e From the 4 20 mA Setup screen press 3 CALIBRATE e Use the keypad to enter the milliamp reading from the milliamp meter Press ENT 36 6 5 6 The System Setup Menu The system setup menu is used to set up the temperature compensation damping initialize the controller change the security password check the firmware version check the diagnostics and select the controller model To reach the SYSTEM SETUP MENU e From the MAIN MENU press 7 SYSTEM SETUP The following screen will appear SYSTEM SETUP 1 PROCESS PARAMETERS 2 INITIALIZATION 3 SECURITY 4 FIRMWARE VERSION 5 DIAGNOSTICS 6 CONTROLLER MODEL 6 5 6 1 Process Parameters The process parameters screen is used to set up the damping temperature compensator and set the amount of temperature compensation The PROCESS PARAMETER screen is shown below PROCESS PARAMETERS 1 DAMPING 2 TEMP COMPENSATION 3 pH PER C 6 5 6 1 1 Damping Damping is used to slow down the rate of change of
47. ncoming power is connected to terminal block P1 at the bottom left corner of the control board There is a hot or line input L1 a neutral input N and an earth ground input amp Refer to the drawing in the back of this manual for wiring instructions 3 4 2 Relay Outputs The relay outputs are of the same voltage as the power input Ensure that the devices that are to be connected to the relay outputs are of the same voltage rating or damage will occur The relay outputs are wired to the female molded receptacles The molded receptacle on the far left is relay 1 and the molded receptacle on the far right is relay 4 If 115 VAC is used simply plug your devices into the molded receptacles If 230 VAC is used remove the receptacles and hard wire your devices to the relay outputs Relay 1 has both a normally open and normally closed contact This is designed for use with any device that requires either or both types of contacts for operation such as a motorized blowdown valve The normally open NO contact energizes when the relay turns on and the normally closed NC contact is energized when the relay turns off The other three relays only have a normally open contact Each relay output has a neutral N connection and an earth ground connection 69 connection 15 To operate the terminal blocks to remove or add wiring insert a small screwdriver into the slot above each wiring connection and pry upward while removing or insert
48. ng tower sensor wiring ORP 10 9 Process sensor wiring Model 520 10 10 Process sensor wiring Model 530 10 11 4 20 mA input and output wiring 1 0 Introduction The Model 1520 30e is a microprocessor based menu driven water treatment controller designed for use in cooling towers process and condensate systems The Model 1520 30e provides for pH or ORP tracking and control flow monitoring and chemical injection The Model 1520 30e is NTL CSA and CE approved The Model 1520 30e uses the latest in microprocessor capability giving the user a high level of application flexibility A large illuminated graphics screen multiple inputs and an intuitive menu characterize this new technology Security features allow full access to programming features or restrict access to viewing only An operator password can help ensure that only authorized personnel will operate the system The Model 1520 30e is user friendly with a graphical screen numeric keypad LEDs for power alarm and relay status It accepts multiple inputs and is easily configured It s a combination of reliability accuracy security and simplicity 2 0 Features Benefits Specifications Steel domed numeric keypad for easy programming Watertight fittings for sensor water meters 4 20 mA and flow switch wiring Receptacles and power cord can be removed for 240 VAC applications Figure 1 Model 1520 30e 2 4 FEATURES e Controller can be used for Cooling tow
49. ogrammed to feed chemicals by either WEEKDAY or by a CYCLE CALENDAR basis NOTE scheduled feeds will be by the method selected BY WEEKDAY is used to feed chemicals by the weekday name i e Monday Tuesday Wednesday etc This is a seven day schedule At the end of the week the schedule starts over again To configure the feed schedule to feed by weekday From the FEED SCHEDULE screen press 1 BY WEEKDAY BY CYCLE CALENDAR is used to feed chemicals by a schedule other than one that is seven days long BY CYCLE CALENDAR can be used to feed the same chemical every day or up to 28 days between feedings The operator specifies the number of days in the cycle calendar After the cycle calendar is completed the schedule starts over again This method of feeding is particularly useful when feeding two biocides on an alternating weekly basis To configure the feed schedule to feed by cycle calendar From the FEED SCHEDULE screen press 2 BY CYCLE CALENDAR e Use the keypad to enter the number of days in your cycle then press ENT Remember the maximum number of days allowed is 28 e Use the keypad to enter which day today is in your cycle e g today is day number 5 in my 14 day cycle Then press ENT After selecting whether the feed schedule will be fed by WEEKDAY or by CYCLE CALENDAR it is time to actually program the feed schedule To enter the actual feed schedule or to edit the feed schedule from the feed schedule screen ab
50. ove Press 3 LIST SCHEDULE This will take you to a list of all scheduled feeds as shown in the screen on the next page NOTE A maximum of 12 scheduled feeds may be programmed into the controller 31 SCHEDULE 2 00 3 00 4 00 5 00 6 00 00 00 00 00 00 00 00 00 00 00 e If there are no scheduled feeds select the first schedule and press ENT If you are editing the schedule select the schedule that you want to edit and press ENT Below is an example screen for programming a chemical feed Before programming a chemical feed you need to configure the relay to be a feed schedule relay as per section 6 5 1 5 RELAY ARROWS NONE CYCLE DAY 0 START TIME 00 00 FEED DURATION 00 00 LOCKOUT TIME 00 00 lt UP gt lt DOWN gt ENT ACCEPT e To program the schedule use the keypad to enter the values in the above screen Press ENT to move to the next item RELAY CYCLE DAY or DAY START TIME FEED DURATION LOCKOUT TIME is which relay you want to program you must configure a relay to be a feed schedule relay first Use the arrow keys to select the available relays is the day you wish to actuate the feed schedule relay is the time of day you want to start the feed schedule sequence This time is based on a 24 hour clock i e 10p m is 22 00 is the amount of time the feed schedule relay will be on after the feed schedule relay is done an additional lockout time
51. pm max 9 RIBBON CABLE TRANSFORMER BNC CONNECTOR 2 JUMPERS ER 1JUMPERS SELECTOR SWITCH TERMINAL P 13 RELAYS USE ERMINAL P 8 100mA 10A ERMINAL P 2 INCOMMING POWER ERMINAL P 7 Terminal blocks For RELAY 41 TERMINAL P 5 RELAY 2 RELAY 3 RELAY 4 Figure 2 Model 1520 30e Enclosure 10 2 4 Ordering Information CONTROLLER OPTIONS 1520 30e Water Treatment Controller Universal pH or ORP controller is field programmable for cooling towers process and condensate applications Cooling Tower Options Cooling Tower Flow Switch Plumbing PH or ORP sensor 1240472 Cooling Tower pH Sensor with 15 ft of cable 1240473 Cooling Tower ORP Sensor with 15 ft of cable 1240477 Plumbing assembly with Flow Switch Process Wastewater Options 520 Series 530 Series Use the Lakewood Instruments 520 series sensors for pH Use the Lakewood Instruments 530 series sensors for ORP Condensate Options gt _ I E HN rs T tomi 14 520 4 71 10 STD 520 4 7R 18 STD 1165305520 4 71 10 STD Condensate pH sensor with 34 in NPT inline fitting 1167983520 4 7R 18 STD Condensate pH sensor with 1 0 in NPT retractable inline fitting 11 3 0 Unpacking Mounting and Installation 3 1 Unpacking Inspect the shipping carton for obvious external damage Note on the carrier s bill of lading the extent of the damage if an
52. r is wired and press ENT The controller automatically uses the other water meter input as the blowdown water meter Use the keypad to enter the volume of makeup after which you want to blowdown then press ENT Input the amount of blowdown that you want to blow down then press ENT The next screen is the EXCESS BLOWDOWN TIME ALARM screen This alarm occurs if the specified amount of blowdown is not reached within the specified amount of time for this alarm Enter the amount of blowdown time before the EXCESS BLOWDOWN TIME ALARM will occur then press ENT This alarm will close the blowdown valve and it will give an alarm indication on the display The alarm time is set in hours and minutes To disable this feature enter 00 00 The relay will activate again when the specified amount of makeup volume is achieved even though the EXCESS BLOWDOWN TIME ALARM has occurred however the alarm will still be present until the specified blowdown volume is reached This will provide the operator with an indication that there is a problem with the blowdown system 30 6 5 2 Setting up the Feed Schedule Refer to section 6 5 1 5 to configure a relay to feed based on the feed schedule before continuing with this section To get to the feed schedule menu e From the MAIN MENU press 3 FEED SCHEDULE You will see the following screen FEED SCHEDULE 1 BY WEEKDAY 2 BY CYCLE CALENDAR 3LIST SCHEDULE The feed schedule can be pr
53. rns of major percentages The patterns for odd values such as 37 or 52 cannot be shown in a 400 second time interval but they would look very much like those patterns shown for 40 and 50 respectively In an extreme case such as 99 the relay would be on for 99 20 second blocks 1980 seconds and then off for 1 20 second block 20 seconds and then on for 1980 seconds and off for 20 seconds etc To determine the total amount of chemical fed over a 24 hour period multiply the percent of time by the number of hours a day that your controller is operating then multiply by your chemical pump flow rate per hour For example We select 10 of the time our controller operates 24 hours a day and our chemical pump flow rate is 1 gallon per hour 10 x 24 hours x 1gallon 2 4 Gallons Day Hour Day e From the RELAY OPTIONS screen press 4 PERCENT OF TIME e Use the keypad to enter the percentage of time desired Press ENT 28 6 5 1 5 By Feed Schedule The feed schedule is used to feed chemicals such as biocides on a time of day basis Setting up the feed schedule is a two part process The first part is to configure the relay so that it will operate by feed schedule The second part of the process is to configure the feed schedule The feed schedule is covered in section 6 5 2 From the RELAY OPTIONS screen press 6 FEED SCHEDULE The controller will respond with the following screen SCHEDULED RELAY SEE
54. roller can be removed from a cooling tower and be placed in another type of application when used with the appropriate pH or ORP sensor and plumbing assembly e No add on options 4 20mA output 4 20mA input and scheduled feed features are standard 2 3 Specifications PH or ORP range 0 14 pH 2000 to 2000 mV PH or ORP sensor Solution ground Single ended or Signal differential PH or ORP Resolution 01 pH mV for ORP Temperature comp Automatic Accuracy amp repeatability 1 0 of scale Deadband Setpoint User programmable Auto Manual outputs Menu selectable Keypad 16 tactile steel dome push buttons Display Illuminated 128 x 64 pixel LCD Drum Switch Inputs 2 digital contact inputs Water meter inputs 2 Contact head paddle wheel or turbine Timer Relay run time exceeded Input Signal One 4 20 mA non isolated internally powered Input Output Signal One 4 20 mA isolated or non isolated optionally powered output for pH or ORP Output relays 4 selectable use Relay ratings 3A each 10A total Power 120 240 VAC 50 60 Hz 6W Ambient temp 32 140 F 0 60 Enclosure Storage temp NEMA 4x 4 150 F 20 65 Sensors Plumbing Cooling Tower Process Condensate Max Pressure 140 psi 9 65 bar 150 psi 10 3 bar 70 psi 4 8 bar 100 F Max Temp 140 F 60 C 230 F 110 C 230 F 110 C Min flow 1 gpm 3 785 Lpm 5 Varies w pipe size 1 gpm 3 785 Lpm g
55. this manual for wiring instructions for the 4 20 mA input 16 3 4 5 Sensor Jumper Configuration The model 1520 30e controller uses jumper blocks to configure the sensor input for pH or ORP Jumper blocks H1 and H2 must be configured for proper operation of the sensor input Refer to drawing 1207168 for ORP configuration and 1207169 for pH configuration Part or Model Sensor Type 1167155 Differential Reference on Shield 1169065 Single Ended Reference on Shield 1240472 Differential Reference on Shield 1240473 Single Ended Reference on Shield 520 Series Differential Reference on Wire 521 Series Differential Reference on Shield 530 Series Differential Reference on Wire 3 4 6 Water Meters The Model 1520 30e will accept two water meter inputs These inputs can be configured for make up make up Second Source Bleed or Chill Loop make up Refer to the water meter manufacturer s manual for plumbing information The 1520 30e series controllers will work directly with the following types of meters dry contacting head meters Seametrics open collector output meters Signet 2535 and 2540 paddle wheel meters and the Autotrol 1 inch and 2 inch meters Contact Lakewood Instruments for other types of water meters The water meters are wired to terminal block P7 on the right hand side of the control board Refer to the drawing in the back of this manual for wiring instructions 3 4 7 Drum
56. tlebrush on the float flowsight and the flow switch assembly to remove any residue e Clean and lubricate the O ring with a silicone based lubricant petroleum based lubricants will cause the O ring to swell e Lock down the red lock ring after you replace the components e Turn the inlet flow back on and check for leaks NJ m FlowSwitchAssembly P N 1240477 Find No PartNo Part Description 1167266 Flowsight 1166418 O Ring flow sight 1167234 Flow Magnet 1169740 Red Locking Ring Kit 1107004 Reed Switch 1166417 O Ring check valve Q 10 43 Replacing the Reed Switch If you ever need to replace the reed switch for the flow switch follow the procedure below Remove the power to the controller and shut off the sample flow Disconnect the flow switch wires from the controller Remove the screws holding the flow switch plumbing assembly Move the flow switch plumbing assembly away from the wall Pull hard on the wires that go to the reed switch assembly to remove the reed switch Push the new reed switch into the plumbing assembly and wire the new reed switch to the controller Re install plumbing Restore flow to the plumbing assembly and check for leaks Restore power to the controller Verify operation before leaving the area 7 3 Replacing the Fuses The Model 1520 30e contains a two 5 x 20 mm European style fuses Replacement fuses must b
57. tput Connect the milliamp meter in line with one leg of the 4 20 mA output Refer to the drawing in the back of this manual for wiring instructions e From the 4 20 mA Setup screen press 3 CALIBRATE e Use the keypad to enter the milliamp reading from the milliamp meter for the 4 mA point Press ENT e Use the keypad to enter the milliamp reading from the milliamp meter for the 20 mA point Press ENT 35 6 5 5 2 Set Up of the 4 20 mA Input The 4 20 mA input is used for a remote pH or ORP application where the pH or ORP sensor will be mounted greater than 15 feet from the controller An external 4 20 mA device is required To set up the 4 20 mA input e From the Main Menu press 6 4 20 mA IN OUT e Press 2 4 20 mA IN SETUP There are three things that can be done from the 4 20 mA IN Setup screen set the 4 20 mA range enable or disable the 4 20 mA input and calibrate the 4 20 mA input Below is the 4 20 mA INPUT setup screen 4 20 MA INPUT 1 SET 4 20 MA RANGE 2 ENABLE DISABLE 3 CALIBRATE Set the 4 20 mA Range The 4 20 mA input range must be set to the same range as the 4 20 mA input device to be useful From the 4 20 mA IN setup screen press 1 Set 4 20 mA RANGE e Use the keypad to enter a pH or ORP value for the 4 mA point Press ENT e Use the keypad to enter a pH or ORP value for the 20 mA point Press ENT Enable disable To use the 4 20 mA input it must be enabled e Fro
58. tress on the plumbing The sample line inlet should be plumbed downstream of the recirculating pump and upstream of the heat exchanger This line brings the sample water into the sensor plumbing for pH or ORP measurement If the Lakewood Instruments flow switch plumbing assembly is used this flow of water also pushes the flow switch float up to activate the relay outputs of the controller NOTE FOR YOUR CONVENIENCE INCLUDE A LAKEWOOD INSTRUMENTS MODEL 9102 SAMPLE LINE SHUT OFF VALVE AND A SAMPLE VALVE SPOUT AS SHOWN IN THE INLET FLOW PLUMBING Figure 3 Model 9102 Valve amp Spout The sample line outlet flow solution sample line should be plumbed to the tower return line or the tower basin where you can insert your chemical feed system Refer to the suggested installation drawing in the back of this manual for an example of a typical installation Remember to Install isolation and bypass valves so that maintenance can be performed WARNING NEVER INJECT CHEMICALS UPSTREAM OF THE CONTROLLER FLOW CELLS If you have questions or need assistance call Lakewood Instruments Technical Service Department at 800 228 0839 Monday Friday 7 30 a m 5 00 p m CST WARNING SOME CHEMICALS MAY HAVE TO BE INJECTED DIRECTLY INTO THE COOLING SYSTEM WATER LINE AND NOT INTO THE SAMPLE LINE CONTACT YOUR WATER TREATMENT SPECIALIST FOR SPECIFIC RECOMMENDATIONS 13 NOTE IF SOLUTION SAMPLE LINE IS RETURNED
59. y and notify the carrier Save the shipping carton until your Model 1520 30e controller is started up If shipping damage has occurred call the Lakewood Instruments Customer Service Department at 800 228 0839 and return the controller to the factory in the original carton 3 2 Mounting the Enclosure The Model 1520 30e can be mounted to a panel or to a flat non vibrating wall The Model 1520 30e includes four removable mounting feet that can be attached in the horizontal or vertical position The mounting feet are attached to the enclosure using four screws To change the position of the mounting feet remove the screws from the feet and reposition either vertically or horizontally as desired and reattach the screws The dimensions of the enclosure in inches are The model 1520 30e has a shipping weight of less than 5 Ibs 12 3 3 Plumbing Installation 3 3 1 Cooling Tower Plumbing PLUMBING MATERIALS Inlet plumbing can be 24 inch 1 9 cm PVC CPVC or iron pipe Provide at least 1 gpm 3 79 Lpm to the sensor A 4 psi 0 3 bar differential pressure from take off to injection is sufficient If flow is marginal consult your Lakewood Instruments Factory Representative The maximum recommended flow is 5 gpm 18 93Lpm Outlet plumbing can be 34 inch 1 9 cm PVC CPVC or iron pipe PVC CPVC Schedule 80 is recommended for strength and sunlight protection If iron pipe is used install a PVC union to relieve the s
60. your sensor Clean the electrode end of the pH or ORP sensor at least once per month Cleaning of the pH or ORP sensor may need to be performed more frequently if it is in an environment which causes frequent fouling of the sensor 9 Remove power from the controller and shut off the sample flow e Remove the sensor from its plumbing e Flush the sensor tip with tap water Do not use cloth to clean the sensor tip Cloth has oils that will foul the sensor e If there is oil on the sensor tip use isopropyl alcohol to clean the tip If necessary determine the source of oil contamination and correct e If there is scale on the sensor tip use a 10 Muriatic or acid to clean the sensor If necessary a cotton swab can be used to clean the reference junction of the sensor Avoid contact with the glass as much as possible Wash the sensor off with tap water Install the sensor in its plumbing Restore sample flow and check for leaks Restore power to the controller and allow the reading to stabilize Perform a calibration of the pH or ORP Verify operation before leaving the area 42 7 2 Flow Switch Maintenance If you have the flow switch plumbing assembly you may need to periodically clean the wetted parts in this assembly Shut off the inlet flow and the power to the controller Turn the red lock ring for the flow switch counterclockwise Pull out the clear flowsight tube and remove the float with your fingers Use a bot
61. your controller Make sure it is properly mounted on a flat non vibrating wall 16 BUTTON KEYPAD ENT CLR PRO DSP for Menu selection and or acceptance of selected values to exit a Menu selection and or skip input options to program a Menu selection Not used 19 LCD A large 128x64 pixel graphic display makes it easy to read the menu driven program POWER ALARM RELAY 1 RELAY 3 RELAY 4 OSHONI INDICATOR LIGHTS LEDs for Power Alarm and relay status 4 2 Display The model 1520 30e uses an illuminated 128x64 pixel LCD digital display for ease of viewing It has multiple lines to display information such as the pH or ORP reading alarms relay status relay configuration clock flow rates and total flow for both water meters and menu selections 4 3 Keypad The model 1520 30e uses a 16 key steel domed numeric keypad for ease of programming The keys have the following functions ENT To accept a setting or to enter a screen CLR To exit a screen or to access the main menu PRO To calibrate the controller DSP Same as CLR UP arrow To move about in the menu DOWN arrow To move about in the menu Number keys To input a value or to select a menu item 4 4 Menu The model 1520 30e is programmed and calibrated by the use of a menu The complete Main Menu has 8 available options that can be accessed in the Technician Level However only six options can be v

1520/30e MANUAL - Lakewood Instruments

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