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YOKOGAWA WE430 User Manual Download Page 59

 

 

<5. Analyzer Maintenance>

5-2

IM 12Y18A03-01EN

1st Edition : Oct. 04, 2019-00

5.4 

Monthly Maintenance

Calibration frequency is operator dependent for the most accurate and precise measurements.

5.4.1 Calibration

•  Replacement of the reagent requires calibration. Refer to Section 4.4, Performing a DYN 

Calibration.

•  Calibration intervals can be programmed using the setup mode. This will prompt the 

operator to recalibrate after a specific amount of time has passed. Refer to Section 3.1, Use 

of the Setup Mode.

5.4.2 

Replacement of Sample Inlet Filter

1.  If the sample flow can be adjusted with the pressure regulator to 50 mL/minute or more, skip 

this procedure.

2.  Turn off sample flow by turning the inlet valve to the right.

3.  Remove the filter hex cap using a 1 inch open-ended wrench.

4.  Separate the filter cap with bypass/needle valve assembly from the filter body, retaining the 

ring.

5.  Remove the filter element and soft gasket (if necessary).

6.  Replace the gasket and press a new sintered element into the filter body.

7.  Replace the hex cap and bypass/needle valve assembly and reposition the bypass drain 

line into the drain assembly.

8.  Retighten the hex cap to approximately 75 pound-inch in torque.

9.  Turn on the sample flow by turning the inlet valve left.

10.  Check for leaks.

5.4.3 

Polish Iodide Electrode

Refer to Section 2.6, Installation of a New Iodide Electrode.
Polish the iodide electrode according to the instructions that are included with the polishing strips.
Rinse the electrode thoroughly with distilled water, insert the iodide electrode into its holder in the 

flow cell and then plug the electrode cable marked “Sensing” into the top of the electrode.

5.4.4 

Air Pump Check

The reference electrode fill solution level should drop at least 1/8’’ per month, which indicates 

good flow through the electrode frit. If the flow rate is low, the air pump should be tested for 

proper operation.
To test the air pump, remove the pushpin and tubing from the reference reservoir. Place the tip of 

the pushpin in a beaker of water. Vigorous bubbling should be observed. Normally, the air pump 

delivers at least 500 cc/minute of air. Replace the air pump if weak bubbling or no bubbling is 

observed. To ensure a tight seal on the reservoir, replace it with a fresh bottle of fill solution (Cat. 

No. 181073).

5.4.5 

Replacement of Reagent and Diffusion Tubing 

Assembly

 WARNING

The reagent is hazardous. Use protective glasses and gloves and work in a well-ventilated area 

or a fume hood. Avoid contact with skin or clothes. In case of skin contact, flush skin immediately 

with water to prevent burns. Refer to the bottle label for precautions.

Summary of Contents for WE430

Page 1: ...User s Manual Model WE430 Hydrazine Analyzer IM 12Y18A03 01EN IM 12Y18A03 01EN 1st Edition ...

Page 2: ...nual Contents Document number Note WE410 WE420 WE430 WE440 WET CHEMISTRYANALYZER Safety Precautions and Protection of Environment IM 12Y18A00 01EN Attached to the product printed manual Model WE430 Hydrazine Analyzer IM 12Y18A03 01EN Online manual This manual EN in the document number is the language code An exclusive User s Manual might be attached to the products whose suffix codes or option cod...

Page 3: ...nuals and product at any time without notice or obligation If you have any questions or you find mistakes or omissions in the user s manuals please contact our sales representative or your local distributor n Drawing Conventions Some drawings may be partially emphasized simplified or omitted for the convenience of description Some screen images depicted in the user s manual may have different disp...

Page 4: ...he following safety symbols are used on the product as well as in this manual WARNING This symbol indicates that an operator must follow the instructions laid out in this manual in order to avoid the risks for the human body of injury electric shock or fatalities The manual describes what special care the operator must take to avoid such risks CAUTION This symbol indicates that the operator must r...

Page 5: ...designed to be used by a person with specialized knowledge n How to dispose the batteries This is an explanation about the EU Battery Directive This directive is only valid in the EU Batteries are included in this product Batteries incorporated into this product cannot be removed by yourself Dispose them together with this product When you dispose this product in the EU contact your local Yokogawa...

Page 6: ...er 2 4 2 3 1 Terminal Assignments 2 6 2 3 2 Electrode Wiring Assignments 2 6 2 4 Installation of Reagent and Diffusion Tubing 2 6 2 5 Installation of New Electrode Cables 2 7 2 6 Installation of a New Iodide Electrode 2 7 2 7 Installation of ATC Probe 2 8 2 8 Installation of a New Reference Electrode 2 9 3 Analyzer Operation 3 1 3 1 Use of the Setup Mode 3 3 3 2 Setup Mode Overview 3 4 3 3 Shutdow...

Page 7: ... 5 4 5 5 1 Electrodes 5 4 5 5 2 O ring Replacement 5 4 5 5 3 Replacement of Restrictor Tubing 5 4 6 Troubleshooting 6 1 6 1 Diagnostics Mode 6 1 6 1 1 Calibration Log 6 1 6 1 2 Error List 6 2 6 1 3 Measurement Log 6 2 6 1 4 Status Log 6 3 6 1 5 Software Revision 6 3 6 1 6 Electronics Serial Number 6 3 6 1 7 mV and Noise Measurements 6 3 6 1 8 mA Output Values 6 3 6 1 9 Display Test 6 3 6 1 10 Keyp...

Page 8: ...analyzer incorporates innovative technologies that include Premium electrodes Marquee help screen Pump less reagent addition and dynamic calibration system l Markets Power Pulp and paper Chemical petrochemical l Applications Boiler water Feedwater Hydrazine Carbohydrazide DEHA and others n Features and Benefits The WE430 Hydrazine analyzer is ideal for measuring and monitoring the critical oxygen ...

Page 9: ... oxygen that enters the system through leakage will be removed Residual hydrazine should be carefully monitored to prevent costly overdosing Excess hydrazine may also decompose into ammonia which increases sample alkalinity and attacks copper alloy components Efficient control of hydrazine depends on maintaining a predetermined safety zone typically 10 to 50 ppb 1 1 Principles of Operation The sam...

Page 10: ...oncentration This response is described by the Nernst equation E Eo 2 3 RT nF log C Ciso Where E measured electrode potential mV Eo potential when C equals Ciso mV R ideal gas constant T temperature of sample degrees K n valence of ionic species 1 for iodide ion F Faraday s constant C effective iodide concentration activity Ciso concentration activity of iodide ion where potential E is temperature...

Page 11: ...ombination with a dynamic calibrator 1 2 1 Dynamic Two Point Calibration DYN The dynamic two point calibration procedure provides maximum calibration accuracy and requires the use of the dynamic calibrator In addition to calculating the Eo value of the electrode as is done in an offline calibration procedure this procedure determines electrode slope To perform a dynamic two point calibration the W...

Page 12: ... the analysis mode The term offline calibration refers only to the fact that a sample from WE430 analyzer bypass is taken offline for laboratory analysis in fact no downtime is experienced during the procedure and the analyzer remains online throughout 1 3 Fluidics Diagram Figure 1 2 Fluidics Diagram 1 4 Glossary Refer to Figure 1 2 Inlet Valve Accepts the sample stream via 1 4 inch NPTF connector...

Page 13: ...measurement circuit Pressurized Reference Electrode Filling Solution Bottle Provides a constant flow of electrolyte solution through the reference electrode for maximum stability Check Valve Prevents the backflow of electrolyte from the pressurized reservoir ATC Probe Measures the sample temperature and inputs the data to the microprocessor for automatic temperature compensation ATC Standard Injec...

Page 14: ... This box should contain the analyzer and accessories Refer to IM 12Y18A00 01EN 3 Remove the cardboard retaining shell by sliding it over the entire mounting board and the analyzer 4 Carefully remove the entire mounting board with analyzer from the inner box NOTE Do not lift or pull the analyzer by the fluidics or the electronic components Use the back panel to lift the analyzer system 5 Unbolt th...

Page 15: ...as close to the sampling point as possible This ensures the fastest possible response to a changing sample condition Refer to the Appendix Sample Conditions section For proper flow cell operation the analyzer must be installed straight and level upon its mounting location Failure to level the analyzer may cause poor siphoning in the flow cell n Instructions 1 Prepare the mounting holes Carefully l...

Page 16: ...om power supply should be installed The switch should be in close proximity to the analyzer and with easy reach of the user The switch should be marked as the disconnecting device for the analyzer To reduce the risk of shock hazard disconnect the power prior to opening the analyzer Before connecting the analyzer to the main make sure that the voltage lies within either range 100 120V 200mA 200 240...

Page 17: ...e the fuse only with a fuse of same rating 2 3 Wiring the Analyzer WARNING Read and observe the following requirements If you install the wrong fuse for your system you could damage the analyzer Make sure that you select the correct fuse rating and discard the additional fuses supplied in the fuse kit n Required Tools Options kit includes fuses cable glands conduit fitting and green screw terminal...

Page 18: ...s required Terminal connector Figure 2 5 Terminal Connector Location 5 Wire the power cable to the green screw terminal connector from the options kit Select correct terminal for hot conductor depending on line voltage insert ground wire into the correct terminal and connect the other cable to the neutral terminal Refer to Figure 2 5 for terminal connector location 6 Plug the terminal connector in...

Page 19: ...ense 19 Solution ground 20 Conductivity drive 21 Conductivity sense 22 Conductivity sense 23 Conductivity drive 24 Reference electrode 25 Jumper to pin 24 when using preamp 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 28 29 30 31 32 33 34 26 27 18 19 20 21 22 23 24 25 Figure 2 6 Terminal Assignments 2 3 2 Electrode Wiring Assignments Iodide Electrode 26 Sensing electrode Connect clear wire 33 Shield ...

Page 20: ...secure it Figure 2 7 Reagent Bottle Assembly 2 5 Installation of New Electrode Cables 1 Unpack the electrode cables 2 Feed the tinned wires through the cable gland assemblies with the holes 2 or 1 3 Follow the terminal assignments shown in Figure 2 6 for the proper electrode cable wiring location 2 6 Installation of a New Iodide Electrode The Iodide electrode Part number K9705CG must be used in co...

Page 21: ...e replacement of the cable 5 Wait at least one hour before calibrating the analyzer ATC Sensor Reference Figure 2 8 Flow Cell Cap 2 7 Installation of ATC Probe The automatic temperature compensation ATC probe is already connected to the correct terminal for temperature upon delivery 1 Insert the ATC probe into its port in the flow cell cap Refer to Figure 2 8 for the location ...

Page 22: ...erence electrode fill solution bottle Cat No 181073 Hold the bottle in an upright position Check that the rubber gasket is properly aligned and then connect the cap end of the tubing assembly to the bottle The 1 8 inch tubing should extend into the bottle 6 Hold the reservoir bottle above the electrode with the bottle cap end down The electrode should be horizontal with the sidearm pointing up Gen...

Page 23: ...w cap Be sure to push back the black cap to verify a secure connection between the male and female pin connection prior to tightening 10 Tighten the screw cap connection to the cable NOTE Do not twist the cable while tightening the connection Twisting may cause damage requiring premature replacement of the cable 11 Insert the reference electrode into its port in the flow cell cap Refer Figure 2 8 ...

Page 24: ...nd selected measurement parameter D Measurement Units Left and right side of middle and bottom display lines ISE board ppm or ppb auto ranging pH mV board pH or mV Conductivity board μS cm or mS cm conductivity MΩ cm resistivity SAL1 or SAL2 in the marquee salinity PCT1 or PCT2 in the marquee concentration and TDS1 or TDS2 in the marquee TDS Depends on type of board installed and selected measurem...

Page 25: ...ough sequence of displays DIAGNOSTICS will appear in top right of screen Scroll down digit numbers Scroll down through a list of options in setup and cal modes Use to edit numeric values Use to select available options 0 through 9 selectable by digit first digit sometimes selectable 0 through 19 Enters log view mode Use to view data in calibration measure and status logs function Enters negative p...

Page 26: ...on Press to exit the current screen and return to the previous screen Press to exit the setup mode and return to the measure mode If is pressed will not return the operator to the setup mode The operator must reenter the setup mode by pressing n Using Password Protection The default password is 0000 indicates password protection has not been activated System password Management secured password pr...

Page 27: ...ll continue to keep date and time due to battery back up operator must set in accordance to local time zone If the battery is removed the system will show 01 01 2000 l TIME Set the time Enter hour and minutes in 24 hour format Default time System will continue to keep date and time due to battery back up operator must set in accordance to local time zone If the battery is removed the system will s...

Page 28: ... measure mode Scroll through 2 3 or 4 significant digits Default significant digits 3 Enable mV values to be displayed on the second line Scroll between On or OFF Default mV setting OFF Set the displayed concentration units Scroll through AUtO automatically ranges from ppb to ppm PPb parts per billion ppb or PP parts per million ppm Default displayed concentration units AUtO l HOLD Set the time th...

Page 29: ...L HOLD Err Default setting for all alarms OFF Setup Menu Vertsion 5 14 mA1 mA range 0 20 4 20 Sout Type LOG LIN Sout Lo select value Sout Hi select value Back to Setup menu mA2 mA range 0 20 4 20 mA Type Sensor Temp Sout Type LOG LIN Sout Lo Select value Sout Hi Select value Tout Lo Select value Tout Hi Select value Back to Setup menu l mA1 Set the mA1 analog current output Scroll between 4 20 mA ...

Page 30: ...EST Test relays and analog output lines DIAGNOSTICS will appear in the mode indicator Method to activate deactivate relays and outputs to be tested Verify the accuracy of the analog outputs when used with an external loop calibrator Provides the values and settings for the mA output and relays mA output 4 20 The low and high values represented by mA1 and mA2 Relay status Set RLY1 RLY2 and RLY3 sta...

Page 31: ...ars as the mode indicator in the mode window HOLD is displayed while in the setup mode The system will enter the setup mode at the last saved menu option PASS DATE TIME LOG RSET DISP CH1 MEAS HOLD TADJ ALRM mA1 mA2 mADJ TEST CAL DKA CH2 MDL HOLD TCMP TADJ ALRM mA1 mA2 mADJ TEST CAL PH SEL SCrn SEL SCrn SEL SCrn SEL SCrn SEL SCrn SEL SCrn SEL SCrn SEL CH1 SEL CH1 SEL CH1 SEL CH1 SEL CH1 SEL CH1 SEL...

Page 32: ...P NEW CALIBRATION PASSWORD PASS change flashing digit Do not scroll first digit above 9 Press to accept thecalibration password and return to the main setup mode PASS flashing SEL SCrn Press to scroll to the next menu Default Operator Action Scrolling Marquee Main Display Notes DATE DATE flashing SEL SCrn Press to set the date US SET USA OR EUROPEAN US flashing Press to scrollbetween US and EUrO S...

Page 33: ...r Action Scrolling Marquee Main Display Notes LOG LOG flashing SEL SCrn Press to set the log interval 00 00 SET LOG TIME IN HOUR MINUTE hour minute LOg first digit flashing Press to set the first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits SET LOG TIME IN HOUR MINUTE hour minute LOg change flashing digit To di...

Page 34: ...he Reset Press to return to the main setup mode PRESS TEST VIEW ENTER TO RESET rSEt RSET flashing SEL SCrn Press to scroll to the next menu WARNING Resetting the analyzer will erase all stored information including relay logs and calibration settings Default Operator Action Scrolling Marquee Main Display Notes DISP DISP flashing SEL SCrn Press to set the lighting option for the backlit display AUt...

Page 35: ...nnel specific menu options MDL flashing SEL CH2 Press to select a menu option and customize the parameter when a pH ORP or conductivity board is installed on channel 2 refer to the Thermo Scientific Orion 2100 Series pH ORPAnalyzer and Conductivity Analyzer User Guide for detailed instructions on the menu option displays CH2 flashing SEL SCrn Press to scroll to the next menu Default Operator Actio...

Page 36: ...ting and advance to the next screen OFF SHOW MV ON SINGLE CHANNEL DISPLAY OFF flashing Press to scroll between OFF and On SHOW MV ON SINGLE CHANNEL DISPLAY OFF or On flashing Press to accept the setting and advance to the next screen AUtO SELECT ISE UNIT UnIt AUtO flashing Press to scroll through AUtO PPb and PP SELECT ISE UNIT UnIt AUtO PPb or PP flashing PP is used as an abbreviation for ppm Pre...

Page 37: ... first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits ENTER FIXED USER VALUE IN mA change flashing digit Action required if USEr was selected in previous screen Press to set the first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digi...

Page 38: ...digit Press to set the value of the next digit TEMPERATURE ADJUSTMENT AdJ c change flashing digit The maximum temperature adjustment is 5 0 C Press to set a positive or negative temperature value TEMPERATURE ADJUSTMENT AdJ c Press to accept the setting and return to the main setup mode CH1 or CH2 flashing SEL SCrn Displayed for two channel analyzer Press to return to the channel specific menu opti...

Page 39: ...F flashing Press to scroll through OFF HI and LO SELECTALARM 2 HIGH LOW OR OFF rLY2 OFF HI or LO flashing Press to accept the setting and advance to the next screen 1 ppm Set the HI or LO value for rLY1 Press to move the decimal point Press to set the first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits ENTER VAL...

Page 40: ...it Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits mA SENSOR OUTPUT LOW VALUE LO change flashing digit Press to accept the setting and advance to the next screen 100 ppb mA SENSOR OUTPUT HIGH VALUE HI first digit flashing Press to move the decimal point Press to set the first digit Press to move to the next digit Press ...

Page 41: ...to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits mA SENSOR OUTPUT LOW VALUE LO change flashing digit Press to accept the setting and advance to the next screen 100 ppb mA SENSOR OUTPUT HIGH VALUE HI first digit flashing Press to move the decimal point Press to set the first digit Press to move to the next digit Press to set th...

Page 42: ...0 C mATEMP OUTPUT HIGH VALUE HI c first digit flashing Press to set the first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits mATEMP OUTPUT HIGH VALUE HI c change flashing digit Press to accept the setting and return to the main setup mode CH1 or CH2 flashing SEL SCrn Displayed for two channel analyzer Press to re...

Page 43: ... to return to the channel specific menu options in the setup mode Action required for two channel analyzer mADJ flashing SEL SCrn SEL CH1 or SEL CH2 on main display of two channel analyzer Press to set the sensor and temperature mA offset values SELECT mA1 OR mA2 OUTPUT OUT1 or OUT2 flashing Press to scroll between OUT1 or OUT2 and select OUT2 SELECT mA1 OR mA2 OUTPUT OUT2 flashing Press to accept...

Page 44: ...ashing SEL SCrn Display for two channel analyzer only Press to return to the channel specific menu options in the setup mode Action required for two channel analyzer only TEST flashing SEL SCrn SEL CH1 or SEL CH2 on main display of two channel analyzer Press to test the mA outputs 4 20 and relays rLY To Test mA1 4 20 Press to scroll between 4 20 and rLY settings and select 4 20 SELECT mA OR RELAY ...

Page 45: ... accept the rLY1 test and move to the rLY2 test Actual rLY2 status Press to set the rLY2 setting OFF or On USE ARROWS TO TOGGLE RELAY 2 rLY2 OFF or On Relay contact according to screen indication Press to accept the rLY2 test and move to the rLY3 test Actual rLY3 status Press to set the rLY3 setting OFF or On USE ARROWS TO TOGGLE RELAY 3 rLY3 OFF or On Relay contact according to screen indication ...

Page 46: ...to 0000 Press to set the first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits ENTER CALIBRATION FREQUENCY IN HOURS CAL change flashing digit Press to accept the setting and return to the main setup mode CH1 or CH2 flashing SEL SCrn Display for two channel analyzer only Press to return to the channel specific menu...

Page 47: ...digit Press to accept the setting and advance to the next screen 99 9 SET PUMP PERCENT FLOW FOR STD1 FLO first digit flashing Press to set the first digit Press to move to the next digit Press to set the values of the remaining digits and press to move through the remaining digits SET PUMP PERCENT FLOW FOR STD1 FLO change flashing digit Press to accept the setting and advance to the next screen 10...

Page 48: ...moving the reference electrode filling solution bottle If the air pump is left on it will spatter filling solution as the bottle is removed 1 To access air pump press 2 Press to scroll though parameters until TEST appears in marquee window 3 Press to access the TEST menu 4 Press to scroll through the TEST menu until AIr appears in the main display 5 Press 6 Press to toggle between On and OFF setti...

Page 49: ...he age of the reagent is not known replace it and note the date in the maintenance records Re install the reagent bottle on the analyzer 2 Restore sample flow to the analyzer If necessary adjust the pressure and flow rate through the analyzer to 40 mL min 3 Remove the protective cap from the reference electrode Re install the electrodes on the analyzer Be careful not to disconnect the reservoir tu...

Page 50: ...ndations When the WE430 Hydrazine analyzer is first commissioned it is advisable to flush out fluidics system overnight prior to the initial calibration and use The electronics need not be turned on at this time Refer to Chapter 4 Rinsing the Flow Cell Install the sensing electrode reference electrode and ATC probe in their respective flow cell holders Refer to Section 2 6 Installation of a New Io...

Page 51: ...ing see D The flow rate should be adjusted to 40 mL minute Pull out the knob to unlock the setting and allow adjustment of the flow rate Turn the knob clockwise to increase the flow rate Turn the knob counterclockwise to decrease the flow rate Push in the knob to lock the setting 4 2 Dynamic Calibrator Operation The dynamic calibrator is used to deliver a standard solution to the WE430 analyzer du...

Page 52: ...blue endpoint limiter midway between the white indicator marks 4 4 Performing a DYN Calibration To begin a DYN calibration the system starts from the measure mode The analyzer must be set to the hydrazine application in the setup mode prior to performing a calibration Refer to Section 3 1 Use of the Setup Mode NOTE A three way valve can be installed upstream of the analyzer inlet to allow easy swi...

Page 53: ...n the syringe Connect the syringe tubing to the standard injection port Open the port by turning the thumbscrew 1 4 of a turn to the right so the dot is aligned with the direction of the flow Press SETUP PUMP PURGE AIR AND CONNECT SYRINGE TO INJECTION PORT OPEN VALVE DOT TO LEFT PRESS ENTER SEt dYn Refer to Section 4 2 Dynamic Calibrator Operation for instructions on how to install the syringe and...

Page 54: ...tor Action Scrolling Marquee Main Display Notes Stability Time Out Error Error 41 Press to continue the calibration despite the reading instability or Press to abort the calibration and refer to Exit 3 Repeat the calibration or refer to the troubleshooting section READINGS WERE UNSTABLE PRESS ENTER TO CONTINUE CALIBRATION OR PRESS EXIT TO ABORT E041 The required system stability was not reached an...

Page 55: ...r and the electrodes are working properly and then repeat the calibration CH2 BAD OFFSETPRESS ENTER E126 Use new buffers or standards Perform electrode cleaning conditioning and troubleshooting 4 6 Calibration At Custom Concentrations Using DYN The WE430 Hydrazine analyzer software has default values to accommodate standards added using the dynamic calibrator The operator has the option to use alt...

Page 56: ...ercent flow dial to read 500 50 0 7 Allow the flow to continue into cylinder for exactly five minutes Remove the tubing from the cylinder and turn the pump off The total volume of the graduated cylinder should be 10 0 1 0 mL Fine adjustment of the flow rate dial may be made if the total flow is different from the specified amount For example if the actual total volume was 11 0 mL the new flow rate...

Page 57: ... resume the calibration HOLD and CAL appear as mode 12 If the calibration password is active enter the calibration password as described in step 3 Press to accept the password ENTER PASSWORD PASS 13 CH1 or CH2 flashing CAL CHnL Displayed for two channel analyzer 14 Press to select the channel that will be calibrated and press to begin the calibration CH1 or CH2 flashing CAL CHnL Action required fo...

Page 58: ...is adequate 5 If required wipe the analyzer with a damp cloth to remove dirt and dust particles 5 3 Bi Weekly Maintenance Refer to Section 2 8 Installation of a New Reference Electrode n Reference Electrode Filling Solution Replacement WARNING Turn off the air pump prior to removing the reference electrode filling solution bottle If the air pump is left on it will spatter filling solution as the b...

Page 59: ...sample flow by turning the inlet valve left 10 Check for leaks 5 4 3 Polish Iodide Electrode Refer to Section 2 6 Installation of a New Iodide Electrode Polish the iodide electrode according to the instructions that are included with the polishing strips Rinse the electrode thoroughly with distilled water insert the iodide electrode into its holder in the flow cell and then plug the electrode cabl...

Page 60: ...gles Unscrew the cap and pour the old reagent into a suitable waste container Figure 5 1 Reagent Bottle Assembly 2 Take a new bottle of the reagent to a well ventilated area such as a laboratory fume hood Unscrew and remove the white cap on the bottle 3 Connect the diffusion tubing Part number K9705CJ to the tubing connector assembly Place the tubing assembly and cap into the bottle 4 Replace the ...

Page 61: ... the reagent and tubing connector assembly barb O rings every month Both O rings are included in the O ring kit 5 5 3 Replacement of Restrictor Tubing Use the restrictor tube assembly Refer to Figure 5 2 for the restrictor tubing connections Clamp O ring To check valve on flow cell manifold Flow meter Restrictor tube assembly Restrictor adapter Fitting Figure 5 2 Restrictor Tubing 1 Close the inle...

Page 62: ...SE CH1 mA1 and mA2 OUTPUT VALUES SENSOR TEMP CH2 mA1 and mA2 OUTPUT VALUES PRESS ENTER FOR THE DISPLAY TEST PRESS ENTER TO CONTINUE PRESS ENTER TO CONTINUE KEYPAD TEST PRESS ALL KEYS ONE ATA TIME The display will change with each menu If only one board is installed in the analyzer only one menu option will be shown in the scrolling marquee instead of CH1 and CH2 menu options 6 1 1 Calibration Log ...

Page 63: ...ling Marquee Main Display Notes Error List ERROR LIST PRESS VIEW E Press to display the description of the error code on the marquee Actual description of error code E Press to scroll through the error list Actual description of error code E Press to proceed to the next menu 6 1 3 Measurement Log Displays logged measurements according to log interval entered in setup mode Press to toggle between t...

Page 64: ...enu 6 1 6 Electronics Serial Number Displays the serial number of the electronics assembly 6 1 7 mV and Noise Measurements Displays the current mV measurement value and the noise associated with the measurement 6 1 8 mA Output Values Displays current mA values for mA1 and mA2 outputs Default Operator Action Scrolling Marquee Main Display Notes Electronics Serial Number SERIAL NUMBER Press to proce...

Page 65: ...isplay segments are off PRESS ENTER TO CONTINUE All segments off Press to proceed to the next part of the test Verify that all of the numeric display segments are functional PRESS ENTER TO CONTINUE Count pattern Count pattern Press to proceed to the next menu 6 1 10 Keypad Test The main display will show 0 and the marquee will display KEYPAD TEST PRESS ALL KEYS ONE ATATIME Press all eight keys one...

Page 66: ... rate setting and range setting on the dynamic calibrator and in the setup mode of the analyzer If using a custom standard verify the values for the dynamic calibrator Standard 1 and standard 2 added in wrong sequence check the sequence of the standards and repeat the calibration pH adjustment is not correct check the level and flow of the reagent Replace the reagent if it is contaminated or the l...

Page 67: ...ATC Temperature should read 25 C E101 Replace if necessary Low Flow Rate Sample pressure below 8 psi Check the sample pressure If it is less than 8 psi increase the pressure Refer to Chapter 2 Pressure regulator set too low Increase the pressure by pulling on the red locking ring and turning the black knob clockwise Refer to Chapter 2 Inlet filter clogged Replace or clean the filter Restrictor tub...

Page 68: ...the type of error or event as identified in the table below Displayed Event Code Description Cause Troubleshooting System Status Codes A711 ALARM1 CH1 ON Alarm 1 channel 1 engaged closed A712 ALARM2 CH1 ON Alarm 2 channel 1 engaged closed A713 ALARM3 CH1 ON Alarm 3 channel 1 engaged open A714 AIR PUMP ON Air pump engaged A721 ALARM1 CH2 ON Alarm 1 channel 2 engaged closed A722 ALARM2 CH2 ON Alarm ...

Page 69: ... value in setup mode E129 CH1 mA2 OVER RANGE Measured temperature value above mA2 high limit value on channel 1 Verify user selectable mA2 high limit value in setup mode E130 CH1 mA2 UNDER RANGE Measured temperature value below mA2 low limit value on channel 1 Verify user selectable mA2 low limit value in setup mode E131 CH2 mA1 OVER RANGE Measured sensor value above mA1 high limit value on channe...

Page 70: ... and probe for damage Replace if needed E122 CH2 TEMP BROKEN Temperature sensor on channel 2 broken or out of range Check ATC cable connections and probe for damage Replace if needed E125 CH1 BAD OFFSET Last calibration produced a bad E0 offset on channel 1 Recalibrate the analyzer using fresh standards Check electrode connections Replace electrode if needed E126 CH2 BAD OFFSET Last calibration pr...

Page 71: ...status indicators are flashing Perform the following sequence Carefully open the front cover of the electronics case loosen the four corner screws Press the small button located on the raised portion of the PCB to reset the electronics Close the front cover of the electronics case and tighten the screws System settings and calibrations are preserved and analyzer returns to the measure mode The act...

Page 72: ...04 2019 00 Revision Record Manual Title Model WE430 Hydrazine Analyzer Manual No IM 12Y18A03 01EN Oct 2019 1st Edition Newly published Yokogawa Electric Corporation 2 9 32 Nakacho Musashino shi Tokyo 180 8750 JAPAN http www yokogawa com ...

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