Walchem WCT410 Manual de Instruções

WDT410 Series Cooling Tower Conductivity plus pH/ORP Controller Instruction Manual Five Boynton Road Hopping Broo

7 Figure 1 WDT410 Conduit Wiring POWERFEEDBLEEDBIO2CONDUCTIVITYELECTRODEFLOW SWITCH(OPTIONAL)FLOW METER 2(OPTIONAL)4-20mA #2(OPTIONAL)

8 Figure 2 Typical Installation HEATEXCHANGERCOOLING TOWERMETERING PUMPSFLOWFLOWSWITCHSAMPLEVALVE1/4" POLYPROPANEL 19" X 24

9 Figure 2a Typical Installation Intermittent Sampling TO ELECTRODETO SOLENOIDTOCONSTANT110 VOLTSPE DISCHARGETUBINGCHEMICALPUMPTOSANITARYSE

10 Figure 2b Typical Installation Submersion Electrode TO110 VOLT ACOUTLETTOSANITARYSEWERCOOLINGTOWEROPENSUMPCIRCULATIONPUMP(X) Unions; insta

11 Figure 3 Inputs ConductivityElectrodePower Supply(115 VAC or 230 VAC)Contact Closure:Polarity not criticalReed SwitchFlow MeterPolarity no

12 Figure 4 Outputs Pump(s)Bleed Solenoid/Motorized Ball ValveAlarmL1 L2/NL2 L2 L2 L2 L2 L2BLEEDN.C.N.O. N.C.BOI 1N.O.N.C.FEEDN.C.BIO 2N.O.

13 4.0 FUNCTION OVERVIEW 4.1 Front Panel Figure 5 Front Panel 4.2 Display A summary screen is displayed while th

14 4.3 Keypad The keypad consists of 4 directional arrow keys and 4 function keys. The arrows are used to move the adjustment cursor and change set

15 4.6 Shut Down To shut the controller down, simply turn off the power. Programming remains in memory. It is important that the pH/ORP electrode

16 Figure 7 Main Menu 2000 S 67°FConductivity2000 S 5.05pHNORMAL2000 S 67°FTemperature2000 S 67°FpH

Notice © 2014 WALCHEM, Iwaki America Inc. (hereinafter “Walchem”) 5 Boynton Road, Holliston, MA 01746 USA (508) 429-1110 All Rights Reserved Prin

17 5.2 Conductivity Menu The conductivity menu provides the following settings: Calibration, Self Test, Unit selection, and sampling mode setup.

18 Figure 8 Conductivity Menu Calibrate Cond2000 S/cmCond Self Test1000 S/cmCond Self Test 666 ppmUnits S/cmS/cmUnits

19 5.3 Temperature Menu The Temperature menu contains the following settings: Calibration and Units (if the Temp element is detected when the unit

20 5.4 pH/ORP Input Menu Cal'd Displays the date of the last electrode calibration. 2 Pt Calibration for pH electrodes Press the ENTER key t

21 Cal'd Press the ENTER key to perform a 2 point calibration of the electrode. If using manual temperature compensation, the first display wi

22 1 Pt Calibration for ORP electrodes Rinse Electrode Remove the electrode from the process and rinse it off. Press ENTER to go to the next step.

23 Figure 10 pH/ORP Input Menu

24 5.5 Bleed Menu The Bleed Menu provides the following settings: Set Point, Dead Band, Control Direction, HOA. The Bleed menu will be indicated o

25 Figure 11 Bleed Menu 2000 S 68° FBleed 1:01:15Bleed 1:01:15Set Point 2000Bleed 1:01:15Dead Band 20

26 5.6 Feed Menu The Feed Menu adapts to the selected Feed output mode. Hint: For easiest programming, program Feed Mode first, then step through

TABLE OF CONTENTS 1.0 INTRODUCTION ...

27 Feed Based on Water Contactor Mode Time/Cont. (Time per contact.) This determines the length of time that the feed pump should be on for each

28 Figure 12 Feed Menu 2112Feed Chem Feed ModeTIMEOUTFeed TIMEOUTHAND OFF >AUTO2000 S/cm 68° FFeed 21:05

29 5.7 WM1 and WM2 Menus The Water Meter 1 and 2 menus are used to set up the type of meter and how to convert the water meter signal into volume

30 5.8 pH/ORP Control Menu The pH/ORP Control Menu provides the following independent settings: Set Point, Dead Band, Time Limit, Control Directi

31 Figure 14 pH/ORP Control Menu

32 5.9 Bio1 and Bio2 Menus The Bio 1 and Bio 2 menus are separate from each other but operate in exactly the same way. Each menu provides the fol

33 Prog Bio 1 Add Press ENTER here to see a list of all of the biocide adds presently scheduled. The first screen displayed is for Today's Bi

34 Figure 15 Biocide 1 Menu

35 Figure 16 Biocide 2 Menu

36 5.10 Time Menu This menu has only one choice, to set the Time used for Biocide adds or Datalogs. This menu will appear as follows: Time: 2Mon

1 1.0 INTRODUCTION The Walchem WDT410 Series controllers offer conductivity and watermeter-based control of cooling tower water, control of corro

37 5.11 Cond Alarm Menu The Cond Alarm menu screen will appear as follows: Cond Alrm OFF Cond Alrm LOW ALRM Cond Alrm HI ALRM

38 5.12 pH/ORP Alarm Menu The pH Alarm menu screen will appear as follows: pH Alrm OFF pH Alrm LOW ALRM pH Alrm HI ALRM Low A

39 5.13 4-20mA Menu (Optional) This menu is only available if the optional 4-20mA output board(s) is (are) installed in the controller. This men

40 5.14 pH/ORP 4-20mA Menu (Optional) This menu will only appear if the optional 4-20mA output board is installed on the pH input board. It is

41 5.15 Access Code Menu This menu determines whether the access code feature of the controller is enabled or disabled and allows you to customiz

42 5.16 Datalog Menu This menu is available if the data logging option has been purchased. This is indicated in the model code by the letter U at t

43 Figure 23 Datalog Menu DatalogCurrent DatalogDatalogCopy Event LogDatalog MenuENTER EXIT 67° FDatalog2000 µSDatalogTransfer Suc

44 5.17 Config Menu This menu allows you to export a file that contains all of the set points in the controller to a USB flash disk drive, and then

45 5.18 Upgrade Menu This menu is used to upgrade the software to a newer version. It is used to upgrade the software to a newer version. If a new

46 6.0 MAINTENANCE The WDT controller itself requires very little maintenance. Wipe with a damp cloth. Do not spray down the controller unless the

2 2.0 SPECIFICATIONS 2.1 Measurement Performance Conductivity Range 0 - 10,000 µS/cm (microSiemens/centimeter) Conductivity Resolution 1 µS/

47 6.2 Replacing the Fuses CAUTION: Disconnect power to the controller before opening front panel! Locate the fuses on the circuit board at the

48 LOW ALARM The summary screen will display an L at the left end of the bar graph and the alarm relay will trip. The controller will continue to c

49 BLEED TIMEOUT This error condition will stop conductivity control. It is caused by the bleed output being activated for longer than the programm

50 pH HIGH ALARM This error message indicates that the pH is above the programmed pH High Alarm value. The pH will continue to be monitored, and th

51 7.2 Conductivity Readout Does Not Change If the readout is stuck at or near zero: Possible Causes Corrective Action Dry electrode Check for

52 7.5 Procedure for checking relay outputs If any prewired output is not activating the device (pump, valve, etc.) attached to it: If the relay

53 8.0 SERVICE POLICY The WDT410 series Cooling Tower Controller has a 2-year warranty on electronic components and a 1-year warranty on mechanic

WDT410 VOLTAGE 1 = 120 VAC, prewired 5 = 100-240 VAC, conduit OUTPUT N = No data output 4 = Single 4-20 mA output 2 = Dual 4

FIVE BOYNTON ROAD HOPPING BROOK PARK HOLLISTON,

3 2.3 Mechanical Enclosure Material Polycarbonate NEMA Rating NEMA 4X Dimensions 8.5" x 6.5" x 5.5" Display 2 x 16 character bac

4 WDT Variables and their Limits (continued) Biocide Menus Low Limit High Limit Pre-Bleed 1 µS/cm 9,999 µS/cm (0 disables pre-bleed) Lock

5 3.0 UNPACKING & INSTALLATION 3.1 Unpacking the unit Inspect the contents of the carton. Please notify the carrier immediately if there a

6 3.4 Icon Definitions Symbol Publication Description IEC 417, No.5019 Protective Conductor Terminal IEC 417, No. 5007 On (Supply) IEC 417,