Manuals / Emerson / Household Appliance / Air Conditioner

Emerson 3000 manual World Class, d.Cell - General, A-3INNER PROBE ASSEMBLY

Models: 3000

1 76

Download 76 pages 17.32 Kb

Page 38

d.Cell - General

Instruction Manual

Appendix A Rev. 3.6 July 1998

World Class 3000

d.Cell - General

The components which make up the cell are machined to close tolerances and assembled with care to provide accurate oxygen measurements. Any replacement requires attention to detail and care in assembly to provide good results.

Failure to follow the instructions in this manual could cause danger to personnel and equipment. Read and follow instructions in this manual carefully.

The oxygen probe includes an inner electrode for the cell assembly. It consists of a platinum pad and a platinum/inconel composite wire which produces the cell constant offset voltage described in the Nernst equation.

With this pad and wire, the constant will be between -10 and +15 mV. The cell constant is noted in the calibration data sheet supplied with each probe.

Every probe should be calibrated and checked after repair or replacement of cell, pad and wire, heater, and thermocouple, or after disassembly of the probe.

A-3 INNER PROBE ASSEMBLY

The inner probe assembly, Figure A-5,consists of six main parts:

b.A heater that is helically wrapped on a quartz support cylinder and insulated.

c.A chromel-alumel thermocouple which acts as the sensing element for the temperature controller. (Not visible in Figure A-5;located within ceramic support rod.)

d.A platinum screen pad which forms electrical contact with the inner electrode of the electrochemical cell. (Not visible in Figure A-5;located at end of ceramic support rod.) The pad is attached to an inconel wire which carries the signal to the terminal strip.

e.A V-strut assembly to give support to the inner probe assembly.

f.A tube to carry reference air to the cell.

Turn to Service and Normal Maintenance, for repair procedures for probe components.

HEATER

	INSULATING
	GASKET	REFERENCE
		REFERENCE
V-STRUT		AIR TUBE
V-STRUT

CERAMIC

SUPPORT

ROD

a.Ceramic support rod with four holes running through the length. The holes serve as insulated paths for the cell signal wire and thermocouple wires.

27270015

Figure A-5. Inner Probe Assembly

A-4 Appendices

Rosemount Analytical Inc. A Division of Emerson Process Management

Image 38

Emerson 3000 manual World Class, d.Cell - General, A-3INNER PROBE ASSEMBLY, Figure A-5.Inner Probe Assembly

Contents

World Class Instruction BulletinESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDINGPage HIGHLIGHTS OF CHANGESEffective October, 1995 Rev SummaryPage P-2 Added safety sheetsEffective May, 1997 Rev. PageSummary Effective February, 1998 Rev. PageSummaryInstruction Bulletin TABLE OF CONTENTSWorld Class LIST OF ILLUSTRATIONS Instruction BulletinNOTE TO USERS PREFACEDEFINITIONS Instruction BulletinInstruction Bulletin SAFETY INSTRUCTIONSFOR THE WIRING AND INSTALLATION OF THIS APPARATUS SECTION DESCRIPTION 1-1COMPONENT CHECKLIST OF TYPICALSYSTEM PACKAGE CONTENTS Instruction BulletinInstruction Bulletin c.System Configurationd.Features Instruction Bulletin e.Handling the Oxygen AnalyzerFigure 1-3.Typical System Wiring HEATER POWER SUPPLYPROBE HEAD WIRING Instruction BulletinSECTION INSTALLATION Instruction Bulletin106-300NERev. 3.4 May Figure 2-1.Probe Installation Sheet 1 ofInstruction Bulletin BOTTOM VIEWFigure 2-1.Probe Installation Sheet 2 of Instruction BulletinInstruction Bulletin Figure 2-1.Probe Installation Sheet 3 of2-4Installation Instruction Bulletin INSTALLATION FOR METAL WALL STACK OR DUCTINSTALLATION FOR MASONRY CONSTRUCTIONFigure 2-1.Probe Installation Sheet 5 of Instruction BulletinInstruction Bulletin c. Service RequiredFigure 2-3.Outline of Heater Power Supply Figure 2-2.Orienting the Optional Vee Deflector2-8Installation HEATER POWER SUPPLYPROBE HEAD WIRING Instruction Bulletina.Mechanical Installation Figure 2-5.Heater Power Supply Wiring Connections2-2HEATER POWER SUPPLY INSTALLATION Instruction BulletinInstruction Bulletin Figure 2-6.Jumper Selection LabelInstruction Bulletin Figure 2-7.Jumpers on HPS Mother BoardInstruction Bulletin 2-12InstallationWorld Class SECTION SETUP Instruction Bulletin3-3MODEL 218A ELECTRONICS SETUP Instruction Bulletina.EPROM Replacement Figure 3-3.Main PCB Model TC200 EPROM Replacement3-4MODEL TC200 VERITRIM ELECTRONICS SETUP b.Heater Set Point AdjustmentInstruction Bulletin 3-5MODEL 132 DIGITAL ELECTRONICS SETUPFigure 3-4.Main PCB Model 132 EPROM Replacement SECTION TROUBLESHOOTING Instruction BulletinInstruction Bulletin 4-2TroubleshootingWorld Class SECTION RETURN OF MATERIAL Instruction Bulletin5-2Return of Material World ClassInstruction Bulletin Instruction Bulletin APPENDIX B. HPS HEATER POWER SUPPLY FIELD MODULESECTION APPENDICES Figure A-1.Oxygen Analyzer Probe Exploded View World ClassAPPENDIX A WORLD CLASS 3000 OXYGEN ANALYZER PROBE World ClassAPPENDIX A, REV DESCRIPTIONWorld Class Appendix A Rev. 3.6 Julyb.Probe Tube Assembly A-2PROBE ASSEMBLY EXTERIORa.Cell and Flange Assembly c.Snubber Diffusion AssemblyWorld Class A-3INNER PROBE ASSEMBLYFigure A-5.Inner Probe Assembly d.Cell - GeneralWorld Class A-5CABLE ASSEMBLYA-6PROBE OPTIONS a.Abrasive Shield Assembly Figure A-6.Probe Junction BoxFigure A-7.Abrasive Shield Assembly World ClassFigure A-10.Ceramic Diffusion Assembly Figure A-8.Ceramic Diffusion/Dust Seal Assemblyb.Ceramic Diffusion Assembly c.Flame Arrestor Diffusion AssemblyWorld Class Figure A-12.Snubber Diffusion/Dust Seal Assemblyd.Snubber Diffusion/Dust Seal Assembly e.Bypass Probe OptionsWorld Class Figure A-13.Bypass Probe Option Sheet 1 ofA-10Appendices World ClassFigure A-13.Bypass Probe Option Sheet 2 of CODE World ClassGROUP DESCRIPTIONTable A-2.Fault Finding PROBE TROUBLESHOOTINGA-8PROBE TROUBLESHOOTING a.Probe Faults SymptomFault Table A-2.Fault Finding ContinuedSymptom World ClassWorld Class A-14AppendicesWorld Class Appendices A-15World Class SERVICE AND NORMAL MAINTENANCEA-11CELL REPLACEMENT A-9OVERVIEWFigure A-16.Cell Wiring Connection World ClassWorld Class Figure A-18.Cell Replacement KitELEMENT REPLACEMENT Figure A-17.Removal of Optional Diffusorb. Replacement Procedure World ClassWorld Class A-13REPLACEMENT OF CONTACT ANDTHERMOCOUPLE ASSEMBLY Figure A-19.Probe Junction Box MechanicalWorld Class Figure A-21.Heater, Strut, and Backplate AssemblyInner Probe Assembly World Class Appendix A Rev. 3.6 Julya. Installation Procedure World ClassEnvironment Kit Figure A-23.High Temperature - CorrosiveWorld Class World Class REPLACEMENT PARTSTable A-3.Replacement Parts for Probe Figure andFigure and Table A-3.Replacement Parts for Probe ContinuedWorld Class Index NoDESCRIPTION APPENDIX B, REV. HPS 3000 HEATER POWER SUPPLYWorld Class B-1DESCRIPTIONFRONT Figure B-2.Heater Power Supply, InteriorWorld Class SIDEWorld Class Table B-1.Specifications for Heater Power SupplyFigure B-3.Heater Power Supply Block Diagram B-2THEORY OF OPERATIONWorld Class HPS 3000 TROUBLESHOOTINGB-4HPS 3000 TROUBLESHOOTING B-3OVERVIEWWorld Class SYMPTOMFigure B-4.HPS Troubleshooting Flowchart, #1 Figure B-5.HPS Troubleshooting Flowchart, #2 World ClassAppendices B-7 Figure B-6.HPS Troubleshooting Flowchart, #3World Class maintenance of the HPS 3000 Heater Power SERVICE AND NORMAL MAINTENANCEThis section describes service and routine Supply Field Module. Replacement parts reB-9DAUGHTER BOARD REPLACEMENT World ClassNOTE NOT ALL PARTS SHOWN ARE AVAILABLE Figure B-7.Heater Power Supply, Exploded ViewWorld Class FOR PURCHASE SEPARATELY. FOR LIST OFLEGEND FOR FIGURE B-7 REPLACEMENT PARTSWorld Class FIGURE and INDEX NOWorld Class B-12AppendicesSECTION INDEX 7-2Index World ClassInstruction Bulletin WARRANTY 2461 3333/5-00Order No World Class 3000 Probe Part No. ________________Serial No HPS Part No