Agilent Technologies G6600-90006 manual Ozone Generation Problems, High Voltage Transformer

Page 109

Ozone Generation Problems

Following the verification of power to the instrumental components, the next step in tracing a problem is the determination of ozone production. With the ozone toggle off and the vacuum pump on, read the signal output on the front of the Detector. Toggle the ozone on. A properly operating Detector will typically display a difference in background of 0.2 to 2 mV. If no change is observed, a problem most likely lies within the ozone generator itself, the high voltage transformer supplying power to the ozone generator, or in the transfer line system between the ozone generator and the reaction cell.

Ozone Generator

Loss of ozone from the ozone generator may arise from generator fault, or from a leak in the corona discharge tube. Typically a pungent ozone odor will be noticed emanating from the side of the Detector if the ozone generator is leaking.

	WA R N I N G	Any operation requiring access to the inside of the equipment, could result in injury. To
	WA R N I N G	avoid potentially dangerous shock, disconnect from power supply before opening the

		equipment.

		High voltages supply the ozone generator. Unplug the instrument.
	WA R N I N G
	WA R N I N G

		Removal of the left side panel (as seen from the front of the Detector) and
		removal of the ozone generator cover panel may reveal corrosion caused by
		escaped ozone. If this is the case, replace the ozone generator. Resistance
		across the leads to the ozone generator should be infinite. Measure the
		resistance with an ohmmeter to verify. If there is a resistance, replace the
		ozone generator.

High Voltage Transformer

WA R N I N G	The high voltage transformer produces 6000 - 8000 volts.
WA R N I N G
	The following test should only be performed by those with high voltage experience using
	high voltage probes.

	Using high voltage probes, directly measure the secondary output of the ozone
	generator. A properly functioning generator will produce approximately
	7500 volts. Output less than 3000 volts mandates replacement of the high
	voltage transformer.

Operation and Maintenance Manual

109

Image 109

Contents Operation and Maintenance Manual Safety Notices WarrantyAcknowledgements Manual Part NumberWA R N I N G EnglishIs not in use Español Français Deutsch Italiano Veiligheidsvoorzieningen niet meer DutchFollowing symbols are used on the equipment Contents Overview InstallationOperation Front Panel Controls and Initial StartupPump Maintenance MaintenanceIndex TroubleshootingOperation and Maintenance Manual Introduction Operation and Maintenance Manual System Description Technical Information 355 SCD SpecificationsTechnical Information 255 NCD Power requirements Physical SpecificationsVoltage Sulfur Chemiluminescence Detector Theory of OperationNitrogen Chemiluminescence Detector Dual Plasma Burner with the 355 SCD Dual Plasma ControllerDual Plasma Burner Description of Major ComponentsCross-Section of the Dual Plasma Burner for the 355 SCD Cross-Section of the Dual Plasma Burner for the 255 NCD Chemiluminescence Reaction Cell and Photomultiplier Tube Ozone Generator355 SCD Left Side 355 SCD Right Side 255 NCD Left Side View Vacuum Pump Pressure TransducerOil Coalescing Filter Chemical TrapFID Adapter Optional NCD Reaction CellNCD Photomultiplier Tube and Cooler Schematic for 355 SCD Schematic for 255 NCD, in Nitrogen Mode Schematic for 255 NCD, in Nitrosamine Mode Operation and Maintenance Manual Installation Overview Selecting a Location Power RequirementsCombustion Gas Requirements Environmental ConsiderationsTwo-stage pressure regulators Venting Gases Unpack and Inspect the Instrument Required Installation ToolsInstalling the Edwards RV5 Pump Oil-Sealed Vacuum Pump Set Up the Vacuum PumpWA R N I N G Ard RV5 Oil-Sealed Vacuum Pump and Associated Traps Front Side RV5 Oil- Sealed Vacuum Pump and Associated Traps Top Setting the Gas Ballast Position RV5 Installing the Welch Dry Piston Vacuum Pump Operation Notes Welch Pump Welch Dry Piston Pump Operation and Maintenance Manual SCD 230 V Unit Rear Panel Diagram Connect the Power CordInstall the Dry Compressed Air or O2 Supply Install the Signal Output Cables Additional information Install the Dual Plasma BurnerDual Plasma Controller Rear Panel Install the Dual Plasma ControllerCapillary Columns Install Column ConnectionsPacked Columns and Columns with an Outside Diameter 0.8 mm Install the Transfer Line Front Panel Controls and Initial Startup Detector Front Panel Controls Power ControlsDisplay Output Controls Signal ControlsDual Plasma Controller Front Panel Dual Plasma Controller ControlsVacuum Test Initial StartupRecorder Test Initial Checkout Detector Interface SetupIgnition Operation Start-Up Procedure Detector Stability and Response Detector OperationColumn Bleed CokingFluctuating Pressures Contaminated GasesTypical Operating Conditions Typical Operating ConditionsExpected Detection Limits for Chromatographic Conditions Detection LimitsDaily Shutdown Instrument Shut-DownComplete Shutdown Special Operating Modes Using the 255 NCD in Nitrosamine ModeOperation and Maintenance Manual Operation and Maintenance Manual Maintenance Operating Life of Components for Edwards RV5 Vacuum Pump Pump MaintenanceCleaning the Detector Changing the Oil Mist Filter RV5 Equipment Reaction Cell CleaningReaction Cell, PMT Housing and PMT Socket WA R N I N G Flow Sensor Calibration MDL Detector SensitivitySCD Proper Ferrule Orientation to the Large Ceramic Tube Orientation of the Double Taper Ferrule Tightening the Heater Swivel Nut Operation and Maintenance Manual NCD Proper Ferrule Orientation to the Large Quartz Tube Burner Assembly Detail Tube Replacement for the SCD Positioning the Upper Tube in the Union Fitting 100 Operation and Maintenance Manual Operation and Maintenance Manual 101 Tube Replacement for the NCD Operation and Maintenance Manual 103 NCD Tube Replacement Detail Troubleshooting Solving Detector Problems Detector Fuse Power ProblemsVacuum Pump Fuse Dual Plasma Controller FusesFuse Positions on the Power Supply Board High Voltage Transformer Ozone Generation ProblemsPlugged Restrictor Lines Response Problems Temperature Reading Problems Troubleshooting Detector Issues Diagnosing General ProblemsDetector gases Troubleshooting Pump Issues Troubleshooting Burner Issues Index Agilent Technologies, Inc