
7866 Triple Range Digital H2and CO2Analyzer/Indicator - Operation and Maintenance 9/06
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5.1 Overview......................................................................................................................................47
5.2 Sensing Unit Calibration Warning ...............................................................................................47
5.3 7866 Analyzer Input Calibration..................................................................................................48
5.4 7866 Remote Indicator Input Calibration.....................................................................................51
5.5 Restoring Factory-set Input Calibration.......................................................................................52
5.6 Output Calibration........................................................................................................................53
5.7 Security Lockout ..........................................................................................................................54
5.8 Setting the Alarm Limits..............................................................................................................56
6. OPERATION ....................................................................................................... 59
6.1 Overview......................................................................................................................................59
6.2 Operating Notes............................................................................................................................59
6.3 Operation......................................................................................................................................59
7. MAINTENANCE.................................................................................................. 61
7.1 Routine Maintenance....................................................................................................................61
7.2 Parts Replacement........................................................................................................................61
7.2.1 Sensing Unit ......................................................................................................................61
7.3 Repacking.....................................................................................................................................64
7.4 Spare Parts....................................................................................................................................65
8. TROUBLESHOOTING........................................................................................ 67
8.1 Overview......................................................................................................................................67
8.2 Troubleshooting............................................................................................................................67
8.2.1 General ..............................................................................................................................67
8.2.2 Recalibration......................................................................................................................67
8.2.3 Fault Isolation Tests...........................................................................................................69
8.2.4 Additional Troubleshooting...............................................................................................73
9. APPENDIX A – 7872 GAS SAMPLING PANEL................................................. 75
9.1 Overview......................................................................................................................................75
9.2 Model Selection Guide.................................................................................................................75
9.3 Installation....................................................................................................................................76
9.4 Maintenance .................................................................................................................................78
10. APPENDIX B – SECURITY BYPASS................................................................. 79
10.1 Overview...................................................................................................................................79
11. SALES AND SERVICE ....................................................................................... 81