Manuals / Teledyne / Household Appliance / Carbon Monoxide Alarm

Teledyne 300M Troubleshooting Using Warning Messages, Checking the CPU and Display, 10-3

Models: 300M

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Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

10.2.2 Checking the CPU and Display

When the analyzer is turned on, the front panel display should energize and the green "Sample" LED should light. If proper DC power is present (see Section 10.2.1), the absence of these actions will usually indicate either a CPU or Display failure. To determine which module is defective, perform the following procedure:

1.Turn off power.

2.Remove the ribbon cable from the CPU board to the Display.

3.Turn Power on.

4.A cursor character should appear in the upper left corner of the display. If it does not, the display is defective and should be replaced. If the cursor does appear, it is probable that the CPU is faulty.

10.2.3Checking the Keyboard

During normal analyzer operation, depressing the right most key of the keyboard should cause a change of display modes. If it does not, check:

1.Cable connections

2.CPU and Display operation (see Section 10.2.2)

If these checks are satisfactory, it is probable that the keyboard is defective and should be replaced.

10.3 Troubleshooting Using Warning Messages

The most common and/or serious instrument failures will result in a warning message (or messages) being displayed on the front panel. Table 10-1lists the warning messages which the analyzer may display, along with their meaning and the recommended corrective action. It should be noted that if multiple (more than 2 or 3) warning messages occur at the same time, it is often an indication that some fundamental analyzer sub-system (power supply, V/F board, CPU) has failed rather than an indication of the multiple failures referenced by the warnings. In this situation, it is recommended that proper operation of power supplies (see Section 10.6.4) and the V/F Board (see Section 10.6.3) be confirmed before addressing the specific warning messages.

10-3

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Teledyne 300M Troubleshooting Using Warning Messages, Checking the CPU and Display, 10.2.3Checking the Keyboard, 10-3

Contents

TOLL-FREE FAX TEL T-API 6565 NANCY RIDGE DRIVE SAN DIEGO, CAMODEL 300M CARBON MONOXIDE ANALYZER 04033The analyzer should only be used for the purpose SAFETY MESSAGESand in the manner described in this manual LIST OF FIGURES TABLE OF CONTENTSLIST OF TABLES VIII4 SETUP MODE 3 PERFORMANCE TESTING5 DIAGNOSTICS 6 HANDLING WARNINGS10 TROUBLESHOOTING 9 ADJUSTMENTS8 CALIBRATION 10-112 SPARE PARTS LISTS 11 ROUTINE MAINTENANCE12-1 232 INTERFACELIST OF FIGURES viii LIST OF TABLESWARRANTY POLICY 02024c 1.2 Warranty1 INTRODUCTION 1.1 PrefaceTERMS AND CONDITIONS 1.3 Principle of Operation Figure 1-1 Pneumatic Diagram 1.4 Specifications Leak check all fittings with soap solution 1.5 Installation and Overviewlift and carry the Model 300M suitable vent outside the analyzer areaPower plug must have ground lug Page Figure 1-2 Carbon Monoxide Analyzer 1-10 1.6 Electrical and Pneumatic Connections 1.6.1 Electrical Connections1.6.2 Remote Contact Closures Zero/Span Inputs 1.6.3 Status Outputs Optional1.6.5 Pneumatic System 1.6.4 RS-232Table 1-1 Status Outputs 1-121.6.7 Zero/Span Valve Connections 1.6.6 Sample Gas Connection1.6.8 Exhaust Connections sample gas connections1-14 Figure 1-4 Rear Panel Pneumatic Connections1-15 1.7 Operation Verification1-16 Table 1-2 Final Test and Calibration ValuesFactory Installed Options Option Installed1.8.1 Rack Mount With Slides 1.8 Options1.8.2 Span Valve 1-171-18 INTENTIONALLY BLANK2.1.3 E2ROM Backup Of Software Configuration 2.1 Key Features2 OPERATION 2.1.1 CO ReadoutTable 2-1 Password Levels 2.1.7 Password Protection2.1.5 Data Acquisition DAS 2.1.6 RS-232Interface2.2.1 Front Panel Display 2.2 Front PanelFigure 2-1 Model 300M Front Panel Mode Table 2-2 System ModesMeaning Test Message Table 2-3 Test MeasurementsMeaning Table 2-4 Warning Messages 2.2.2 Programmable Push ButtonsFigure 2-2 Illustration of Normal Display 2.2.3 Status LED’sState Table 2-5 Status LED’sMeaning INTENTIONALLY BLANK 2-103.1 Manual Zero/Span Check 3 PERFORMANCE TESTING3.1.1 Zero Check span gas into the analyzer3.1.2 Span Check 3.1.3 Dual Range Calibration 3.3 Zero/Span Valves Option 3.2 Span Valve Option3.4 Automatic Zero/Span Check The programmed start time must be a minimum of see Section 4.3 and 4.4 for setting present time5 minutes later than the present time compute the carbon monoxide readingPage Table 3-1 Calibration Controls to be established least3.8 Power-OnHold Off 3.7 Remote Zero/Span Check or Adjustment RS-2323.9 Hold Off 3-104.1 Setup Mode Operation 4 SETUP MODE4.4 Setting the Date 4.3Setting the Time-of-Day4.5 Adjusting the Clock Speed 4.6.1 Single Range Mode SNGL 4.6 Setting the CO Concentration Range4.6.2 Dual Range Mode DUAL 4.6.3 Auto Range Mode AUTO4.8 Setting the RS-232Baud Rate 4.7 Setting the Analog Output Offset4.9 Setting the Analyzer I.D 4.10 Disabling the Calibration Password4.11.1 Data Channels 4.11 Data Acquisition System DAS4.12 Software Configuration 4.13.1 Summary of Setup Functions 4.13 Gas AlarmsDefault Table 4-1 Setup FunctionsButton Sequence FunctionDefault Table 4-1 Setup Functions ContinuedButton Sequence FunctionINTENTIONALLY BLANK 4-105.1 Test Measurements 5 DIAGNOSTICSTable 5-1 Diagnostic Tests 5.2 Diagnostic TestsTable 5-2 I/O Signals 5.2.1 Signal I/Otable continued Signal Table 5-2 I/O Signals Continuedtable continued ControlSignal Table 5-2 I/O Signals Continuedtable continued Control5.2.3 Electric Test 5.2.2 Analog Output TestTable 5-2 I/O Signals Continued Table 5-3 M300M Variables 5.3 M300M Internal VariablesINTENTIONALLY BLANK 6 HANDLING WARNINGS INTENTIONALLY BLANK 7 RS-232COMMUNICATIONS Table 7-1 RS-232Port Setup - Front PanelTable 7-2 RS-232Message Types 7.1 DAS ReportingPage 7.2 Warnings Command Table 7-3 RS-232Warning Message Clear CommandsWarning Message Cleared Table 7-4 Status Reports 7.3 Status/Controlwhen the analyzer is in the sample mode Table 7-5 Control CommandsTable 7-6 Diagnostic Commands 7.4 DiagnosticsTable 7-7 Diagnostic Reports the analyzer is in sample mode7.5 Test Measurements 7-10 Table 7-8 Test Measurement Request CommandsCommand Test Measurement7-11 7.6 Viewing and Modifying Variables7-12 Table 7-9 RS-232Variable Names8.1 Required Equipment and Gas Standards 8 CALIBRATIONFigure 8-2 Inlet Venting Recommendations Figure 8-1 Gas Generation SystemQv × L = Qa × D 8.2 Multi-PointCalibration8.2.1Procedure Page Page 8.3 Zero/Span Checking INTENTIONALLY BLANK 9.1 Power Supply Board Adjustment 9 ADJUSTMENTS9.1.1 Box Temperature Limits Figure 9-1:M300M Electrical Block Diagram the value on the voltmeter will remain constant 9.2 A/D - D/A Calibration ProcedurePage To adjust analog recorder offset, see Section 9.3 Dark Current Signal Adjust Procedure9.4 Output Voltage Range Changes 9.5 Flow Readout Adjustment 9.7 CPU 9.6 DC Power SupplyINTENTIONALLY BLANK 10.1 Overview 10 TROUBLESHOOTING10-1 10-2 10.2.1 Checking the Power Sub-Systems10.2.2 Checking the CPU and Display 10.3 Troubleshooting Using Warning Messages10.2.3Checking the Keyboard 10-310-4 Table 10-1 Warning MessagesWarning Message Meaning10-5 10.4 Troubleshooting Using Test Function Values10-6 Table 10-2 Test Function ValuesTest Function Meaning10.5.1Noisy or Unstable Readings at Zero 10.5 Troubleshooting Dynamic Problems10.5.2Noisy, Unstable, or Non-LinearSpan Readings 10.5.3Slow Response to Changes in Concentration10.5.5Cannot Zero or Cannot Dynamic Zero 10.6.1 Troubleshooting Flow Problems10.5.6Cannot Span or Cannot Dynamic Span 10-8Flow is zero Hazardous voltages present - use cautionLow Flow High FlowSample Temperature 10.6.2 Troubleshooting Temperature ProblemsOptical Bench Temperature Gas Filter Wheel Temperature10-11 10.6.3 Checking the V/F CardHazardous voltages present - use caution 10-12 Table 10-3 V/F Board Jumpers - Factory Settings10.6.3.2 Digital to Analog Converters 10.6.3.1 Analog Inputs10-13 10.6.3.3 Digital I/O Lines 10.6.4 Checking the DC Power Supply Board10-14 10-15 10.6.5 Checking the Synchronous Demodulator BoardFigure 10-1 Opto Pickup Waveform 10.6.6 Checking the Opto InterrupterFigure 10-2 Detector Waveform 10-1610-17 10.6.7 Flow/Pressure Sensor10-18 10.7 Warranty/Repair Questionnaire11.1 Model 300M Maintenance Schedule 11 ROUTINE MAINTENANCETable 11-1 Maintenance Schedule 11-111.3.1 Using a Leak Checker 11.2Replacement of Sample Filter11.3Leak Checking Do not exceed 15 PSI of pressure11.3.2 Leak Self Test the solution may enter and contaminate the cellvacuum. This may cause damage to the analyzer Use only bubbles, not liquidINTENTIONALLY BLANK 11-412.1 Spare parts for CE Mark units 12 SPARE PARTS LISTS12-1 12.3 Model 300M Spare parts kit for one unit 12.2 Model 300M Expendables kitIncludes 12-212-3 12.4 Model 300M Level 1 parts kit for ten unitsIncludes Signal ConnectorsCables & Adapters come in 4 general types 12-412-5 WiringENABLE MODEM TRANSMISSION Troubleshooting the modem connection12-6 Drawing Number APPENDIX B Electrical drawing indexTitle 12-7