Teledyne 3160 manual Maintenance & Troubleshooting, Routine Maintenance, Sensor Maintenance

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Maintenance & Troubleshooting 5

Maintenance & Troubleshooting

5.1Routine Maintenance

1.Calibrate the analyzer at least once each week during the first four weeks and then once every two weeks during the next eight weeks. Afterwards, the analyzer should be calibrated once a month.

2.Check the pressure of the air supply to the analyzer. Air pressure should be maintained between 70 and 80 psig.

Note: The instrument air pressure must be greater than 70 psig in order to open and close the pneumatic solenoid valves.

3.Check the sample pressure. Pressure should be maintained between 5 and 10 psig. Sample and span gas pressures should be within ±2 psig of each other.

5.1.1 Sensor Maintenance

Sensor maintenance in the 3160 is limited to replacing the sensor(s) when replace- ment is indicated. Consult the troubleshooting section for symptoms that indicate that the sensor needs replacing.

A guide to the relative life left in the cell can be found on status page 2. See “Cell Strength Factor” at the beginning of Chapter 3.0.

In units with 2 cell blocks, if sensor A fails, sensor B will not automatically switch online. This must be done manually through the Install Sensor and Test Alternate Sensor menu.

5.1.2 Scrubber Maintenance

The oxygen scrubber is a replaceable component. With normal use, the scrubber usually lasts for several years.

NOTE: Do not zero in ranges other than 0-1 ppm, as zeroing in higher ranges will exhaust the scrubber.

TELEDYNE ANALYTICAL INSTRUMENTS

5-1

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Contents Model Copyright 1999 Teledyne Analytical Instruments Iii Table of Contents Appendix Maintenance & TroubleshootingTeledyne Analytical Instruments Introduction FeaturesFixed Features Variable FeaturesIntroduction Options and Model Numbers Introduction Components3160DA Dual fuel cell Introduction Applications Principles of Operation Operational TheoryMajor Components Sample System Operational Theory Micro-Fuel Cell SensorOperational Theory Model 3160 flow schematic Electronics and Signal ProcessingOperational Theory Identifier Range Scale Voltage CurrentmA Analog signal output offsetDefaults Programmable Options Qty Description InstallationUnpacking the Analyzer Front PanelRear Panel Analyzer front and rear panels Sample Gas Installation Gas Line ConnectionsSpan Gas Instrument Air Compressed Air FittingSensor Installation Electrical Connections 3160 Rear Panel Voltage SelectionRemoving the Voltage Card Fuse ChangingFuse Replacement 3 RS-232 Serial Digital Port Installation ChecklistFront Panel Controls OperationsSpinning Wheel Modes of OperationCell Output Factor Span Factor Operations Uled Span in Progress Changing Passwords For Remote Monitoring and ControlOperations Cold Start-Up Operations Calibration Zeroing Operations Operations Calibration Using Span Gas Operations Operations Operations Select Active Sensor Two Cells Only Setup Operations Accpt Operations O2 Range Set-UpCold Start Operations Set-Up AlarmsOperations Operations Logger Set-Up Operations Operations Set-Up Clock Functions Accpt Teledyne Analytical Instruments Operations Operations System Statistics Ascii Data Bits 7 or Stop Bits 1 or Baud rateComm. Std. for 1200B Bell USA/CCITT Operations Operations Scrubber Maintenance Maintenance & TroubleshootingRoutine Maintenance Sensor MaintenanceSymptom Cause Correction TroubleshootingMaintenance & Troubleshooting Symptom Cause Correction Maintenance & Troubleshooting Operating Temperature0-50C 32 -122 F SpecificationsAppendix Teledyne Analytical Instruments Altitude 1,609 m Relative Humidy Up to 99%Drawing List Appendix Recommended Spare Parts ListMaterial or Component S. # Quantity Appendix Material Safety Data SheetCustomer Service Extension Environmental Health Date Prepared 2/12/96Section IV Fire and Explosion Hazard Data Exposure Protective measures during cell replacementSection Viii Control Measures Phone Product NameManufacturer AddressEffects of overexposure Ingestion Signs/symptoms of exposurePrimary route of entry Exposure limits Osha PELDisposal Protective measures