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

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

Contents

Model Teledyne Analytical Instruments Model Copyright 2005 Teledyne Instruments/ Analytical Instruments Specific Model Information Total Organic Carbon Analyzer Safety Messages Total Organic Carbon Analyzer Table of Contents Setup and Operation Maintenance Appendix Index Teledyne Analytical Instruments List of Figures Model 6750 TOC Analyzer Front door removed DC 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 Model Operator Interface Model 6750 TOC Analyzer Front door removed Introduction Model Teledyne Analytical Instruments Theory of Operation OverviewBackground Total Organic Carbon Analyzer Theory of Operation Theory of Operation Model Npoc or TOC Direct Method Conclusion TOC Measurement Basics UV/Heated Persulfate Method of Analysis Comparison of TOC Measurement Technologies Subsystems Principles of Operation Sample Handling Sample Handling for TOC -Direct Sample Handling TOC-True TOC analysis in a continuous, on-line TOC analyzer Inorganic Carbon Removal/Analysis Relationship Between TIC and pH Oxidation Oxidation Reactions Ndir CO2 Gas Detection 10 Model 6750 Ndir Unit Electronic 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 Analyzer Installation Model Analyzer Dimensions Power Connection Electrical Connections Analog Outputs Electrical Connections to the Model Alarm Connections Gas/liquid Connections4 RS-232 Serial Connection Liquid Connections Gas and Liquid Connections to the Analyzer Gas Connections Checking the System Gas Carrier Connections Installation Model Teledyne Analytical Instruments Setup and Operation Total Organic Carbon Analyzer Setup and OperationAnalyzer Startup Setup and Operation Model Drain Connections Run Mode Menus Parameter Menu Alarm Settings Stream Sequencer 5 D/DBPR Detailed Calibration Procedures 100 mg/Liter 1000 mg/Liter Ethylene GlycolMethanol Ethanol Preparation of Phosphoric Acid Solution Total Organic Carbon Analyzer Setup and Operation Operation RUN Screen Shutdown Historical Data Setup and Operation Model Maintenance Compupter-aided TestingTotal Organic Carbon Analyzer Maintenance Troubleshooting Maintenance Model Module Service Ndir Gas Calibration IR Calibration Installing Calibration Adapter Ndir Service Removing 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 Board 4 D. C. Power Supply DC Power Supply Module CE Computer P/N Replacing CE Computer UV Lamp Replacement UV Lamp P/N ST20009 UV Reactor Assembly P/N ST20003-1 Removing the UV Reactor Assembly UV Power Supply 10 Removing the UV Power Supply Mass Flow Controller P/N ST18001A 11 Mass Flow Controller Metering Valve P/N ST16050 12 Metering Valve Sparger P/N ST20025 13 Sparger Pumps Maintenance Model 14 Removing the Pump Maintenance Model 13 4-20 mA Adjustment Procedure System Diagnostics Setting 100 MV Control Voltage 1Specifications AppendixTotal Organic Carbon Analyzer Appendix Appendix Model Sample requirements Parts Listing Description Image Appendix Model Total Organic Carbon Analyzer Appendix Appendix Model Total Organic Carbon Analyzer Appendix Option Auto CAL True Dual Range Option not an electronic scaling Dbpr Option Appendix Model AS-BUILT Drawings Appendix Model Teledyne Analytical Instruments Index Total Organic Carbon Analyzer Index Index Model Modbus Pump mounting screw Index Model