Fuse Replacement | Teledyne 7500ZA manual

Maintenance	Model 7500ZA

7.5 Fuse Replacement

1.Turn “OFF” the main power supply switch to the analyzer.

2.Rotate the fuse holder cap (shown in the figure above) counterclockwise and pull it out. The cap (fuse holder) will contain the fuse. Remove the blown fuse from the holder and replace it with a new one (250VAC/2A, Slo-Blo).

3.Reinstall the fuse holder cap, turn ON the power supply switch. The analyzer will power up normally.

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Teledyne 7500ZA operating instructions Fuse Replacement

Contents

Model 7500ZA Teledyne Analytical Instruments Model 7500ZA Copyright 2014 Teledyne Analytical Instruments Specific Model Information Ndir Gas Analyzer Safety Messages Ndir Gas Analyzer Additional Caution on Safety Prohibition Vii Metal or finger. Otherwise, electric shock or Ndir Gas Analyzer Table of Contents Settings and Calibration Ndir Gas Analyzer Display And Operation Panels Error Messages MaintenanceSpecifications Code Symbols 106 Outline Diagram 109 List of Figures 1A Model 7500ZA Front Panel List of Tables Combustible GAS Usage Overview IntroductionNdir Gas Analyzer Introduction Typical Applications Introduction Model 7500ZA Confirmation of delivered items Items included with the AnalyzerNdir Gas Analyzer Items Included with Analyzer Name and Description of Analyzer Items Included with Analyzer Model 7500ZA Ndir Gas Analyzer Operation 1B Model 7500ZA Rear Panel Blank Installation Ndir Gas Analyzer Instalation Installation Conditions InstallationInstallation Model 7500ZA Installation of Analyzer Main Frame Piping Installation Model 7500ZA Measured Optical Bench Components Sampling Sample Gas ConditioningSample Gas Flow Preparation of Standard Gas Internal Purging of the Instrument Housing Pressure at Sample Outlet Example Configuration of Sample System Name Description Electrical Connections Teledyne Analytical Instruments O2 Sensor Input External input connector A/I Input signal Installation Model 7500ZA Teledyne Analytical Instruments Installation Model 7500ZA Teledyne Analytical Instruments Ndir Gas Analyzer Instalation See also .4 Automatic Calibration Settings Blank Page Tube and wiring check Operation ProcedureOperation Preparation for operation Installation Model 7500ZA Display And Operation Panels Front Panel Description Display and Operation Panels Model 7500ZA Name Description Overview of Display and Operation Panels Outline of Display Screen Name Function Ndir Gas Analyzer Display and Operation Panels Teledyne Analytical Instruments Teledyne Analytical Instruments User mode displays ∙ Measurement modeBasic Operation Settings and Calibration Range SwitchNdir Gas Analyzer Settings and Calibration Setting the Range Switch Mode Manual Range Mode Settings and Calibration Model 7500ZARange Identification Contacts Calibration Setting Setting the Span Gas Concentration Calibration parameter range of value NOx, SO2, CO2, CO, CH4, external and built in O2 sensorExternal O2 sensor Reverse Range Example Setting the Calibration Range Example SO2 Setting the Component/Range for Auto Calibration Component/Range Selection Auto Calibration Operation Alarm setting Setting Alarm Parameters ON/OFF Hysteresis Setting Hysteresis In case of upper limit alarm Peak Alarm Setting Description of Setting Items Settings and Calibration Model 7500ZA Setting Range Action of Peak Alarm Description of Auto Cal Settings Setting Up the Auto CalibrationAuto Calibration Gas flow time setting Setting Range Remote Start Forced Run/Stop Of Auto Calibration Auto Calibration screen Example Settings and Calibration Model 7500ZA Description of Auto Zero Settings Setting Auto Zero CalibrationAuto Zero Calibration Auto Calibration Status Relay Contacts Remote Start Forced Run/Stop of Auto Zero Calibration Execution of Auto Zero Calibration only Once Example Parameter Setting Description of setting items Output Hold Settings and Calibration Model 7500ZA Ndir Gas Analyzer Settings and Calibration Press the ESC key to return to the parameter setting screen Response time Setting DescriptionAverage Period Average Value Reset Backlight Timer Maintenance Mode Contrast Error Log screen Maintenance ModeSensor Input Value screen Calibration Log screen Output Adjustment Screen Other Parameter Password SetO2 ref. Value and Limit Range Setting Station No Calibration Zero Calibration Span Calibration Maintenance Ndir Gas Analyzer MaintenanceDaily Check Zero calibration and span calibration Daily Check And Maintenance Procedures Long Term MaintenanceMaintenance Model 7500ZA Gas Analyzer Annual Inspection Plan Ndir Gas Analyzer Maintenance Installation Conditions Sample gas conditions Cleaning the Sample Cell Measuring Unit Configuration Pipe Cell Block Cell Removal see FIG Measuring Unit Configuration Block Cell Cleaning the Sample Cell Measuring Unit with 2-Component Block and Pipe Cell Fuse Replacement Error Messages Ndir Gas Analyzer Error Messages Troubleshooting Error Messages Model 7500ZATypical Error Screen Display Error Log File Error Log Screen Deleting Error History Specifications General SpecificationsNdir Gas Analyzer Specifications Standard Specifications Specifications Model 7500ZA Analog Input Signal Ambient temperature -5˚C to 45˚C Standard Functions Optional Functions Ndir Gas Analyzer Specifications RS-485 9pins D-sub connector Half-duplex bit serial Atmospheric Pressure Correction Performance EC Directive Compliance Requirements for Sample Gas Installation Requirements Measurable Component and Range Availability Check Table Specifications Model 7500ZA Teledyne Analytical Instruments 103 104 105 Code Symbols 107 108 Outline Diagram Analyzer main unit Teledyne Analytical Instruments 110