Teledyne 6750 operating instructions Mass Flow Controller, Metering Valve P/N ST16050

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Maintenance	Model 6750

Figure 5-11: Mass Flow Controller

5.3.10 Metering Valve (P/N ST16050)

If no O2/air flow to the sparger (P/N ST20025) is observed (no bubbles), check for tubing and fitting leaks, restrictions and adjust metering valve (be careful to return to previous indicated bubble rate). If flow cannot be restored, replace the metering valve (P/N ST16050) according to the directions below. See Figure 5-12.

To replace the metering valve:

1.Turn carrier gas (Air/O2) OFF.

2.Turn pumps OFF.

3.Remove fittings and tubing.

4.Remove metering valve.

5.Recalibrate TIC if TIC and/or TOC–TRUE analysis is required. NPOC analysis only does not require recalibration.

6.Reinstall metering valve in reverse order.

Teledyne Analytical Instruments

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Contents Model Teledyne Analytical InstrumentsModel Copyright 2005 Teledyne Instruments/ Analytical InstrumentsSpecific Model Information Total Organic Carbon AnalyzerSafety Messages Total Organic Carbon Analyzer Table of Contents Setup and Operation MaintenanceAppendix Index Teledyne Analytical InstrumentsList of Figures Model 6750 TOC Analyzer Front door removedDC Power Supply Module List of Tables Combustible GAS Usage Main Features of the Analyzer IntroductionTotal Organic Carbon Analyzer Introduction Options Typical ApplicationsIntended Use of the Analyzer Introduction ModelOperator Interface Model 6750 TOC Analyzer Front door removedIntroduction Model Teledyne Analytical Instruments Theory of Operation OverviewBackground Total Organic Carbon Analyzer Theory of OperationTheory of Operation Model Npoc or TOC Direct MethodConclusion TOC Measurement Basics UV/Heated Persulfate Method of Analysis Comparison of TOC Measurement Technologies Subsystems Principles of Operation Sample HandlingSample Handling for TOC -Direct Sample Handling TOC-True TOC analysis in a continuous, on-line TOC analyzer Inorganic Carbon Removal/AnalysisRelationship Between TIC and pH OxidationOxidation Reactions Ndir CO2 Gas Detection 10 Model 6750 Ndir UnitElectronic Signal Processing, Display and Control BENCHMARK/AUTO-VALIDATION Theory of Operation Model Teledyne Analytical Instruments Installation Total Organic Carbon Analyzer InstallationUnpacking the Analyzer Mounting the AnalyzerInstallation Model Analyzer DimensionsPower Connection Electrical ConnectionsAnalog Outputs Electrical Connections to the ModelAlarm Connections Gas/liquid Connections4 RS-232 Serial Connection Liquid ConnectionsGas and Liquid Connections to the Analyzer Gas ConnectionsChecking the System Gas Carrier ConnectionsInstallation Model Teledyne Analytical Instruments Setup and Operation Total Organic Carbon Analyzer Setup and OperationAnalyzer Startup Setup and Operation Model Drain ConnectionsRun Mode MenusParameter Menu Alarm Settings Stream Sequencer 5 D/DBPR Detailed Calibration Procedures 100 mg/Liter 1000 mg/Liter Ethylene GlycolMethanol EthanolPreparation of Phosphoric Acid Solution Total Organic Carbon Analyzer Setup and Operation Operation RUN ScreenShutdown Historical DataSetup and Operation Model Maintenance Compupter-aided TestingTotal Organic Carbon Analyzer Maintenance Troubleshooting Maintenance ModelModule Service Ndir Gas CalibrationIR Calibration Installing Calibration Adapter Ndir ServiceRemoving the Ndir Unit P/N ST36000 Total Organic Carbon Analyzer Maintenance Maintenance Model To Reassemble Use alternate tightening sequence Master Interface Board P/N ST13042-1 Removing the Master Interface Board4 D. C. Power Supply DC Power Supply ModuleCE Computer P/N Replacing CE ComputerUV Lamp Replacement UV Lamp P/N ST20009UV Reactor Assembly P/N ST20003-1 Removing the UV Reactor AssemblyUV Power Supply 10 Removing the UV Power Supply Mass Flow Controller P/N ST18001A11 Mass Flow Controller Metering Valve P/N ST1605012 Metering Valve Sparger P/N ST2002513 Sparger Pumps Maintenance Model 14 Removing the Pump Maintenance Model 13 4-20 mA Adjustment Procedure System DiagnosticsSetting 100 MV Control Voltage 1Specifications AppendixTotal Organic Carbon Analyzer Appendix Appendix Model Sample requirementsParts Listing Description ImageAppendix Model Total Organic Carbon Analyzer Appendix Appendix Model Total Organic Carbon Analyzer Appendix Option Auto CALTrue Dual Range Option not an electronic scaling Dbpr OptionAppendix Model AS-BUILT Drawings Appendix Model Teledyne Analytical Instruments Index Total Organic Carbon Analyzer IndexIndex Model ModbusPump mounting screw Index Model