Agilent Technologies G6600-90006 manual Installing the Welch Dry Piston Vacuum Pump

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To select no gas ballast flow (not recommended), turn the restrictor plate so that none of the indentations are aligned with the indentation on the side of the oil return assembly.

To select low gas ballast flow, turn the restrictor plate so that the single indentation on the restrictor plate is aligned with the indentation on the side of the oil return assembly.

To select high gas ballast flow (the setting the ballast control is shipped from the factory), turn the restrictor plate so that the two indentations are aligned with the indentation on the side of the oil return assembly.

Installing the Welch Dry Piston Vacuum Pump

The Welch Dry Piston Pump may be used as a direct replacement for an oil-sealed vacuum pump for the NCD or SCD. This pump produces all the advantages of an oil-free pump with little or no loss in instrument performance, however, operating Detector and Burner pressures will typically be a few Torr higher than those obtained with the oil-sealed pump.

To install the dry piston vacuum pump, follow these steps:

1Remove the pump from its packaging and place on an accessible work surface with the power cord side nearest to you and the pump "INLET" port to your right. Refer to Figure 15 as a visual aid to these instructions.

2Verify that the voltage of the pump matches that of the Detector.

3Open the plastic bag containing the Dry Piston Pump Kit. Locate the brass elbow and brass barb (3/8" NPT). Remove their plastic protective caps and wrap three or four turns of Teflon tape (not supplied) onto the threaded connections. Screw the barb fitting into the elbow and tighten using wrenches. Similarly, remove the plastic cap from the pump's inlet fitting and screw elbow into it. Tighten the elbow so that the barb ends up pointed parallel to the floor and pointed toward the power cord side of the pump.

4Locate the mounting brackets, 4 small screws and washers and spring clips. Use 2 screws and washers to attach the spring clips, one to each bracket.

5Using the supplied Torx wrench, remove two Torx screws from the pump, the right corner screw located closest to you and the closest screw to you located immediately to the left of the pump's handle.

6Attach the brackets to these locations using the Torx screws as showing in Figure 15.

7Attach the short piece of ½" ID hose tubing supplied in the Dry Piston Pump Kit to the brass barb and use one of the supplied hose clamps to tighten it onto the barb.

8Place a second hose clamp over the other end of the plastic tube. Insert the barb on the elbow end of a Chemical Trap into the open end of the short plastic hose that was just attached to the brass barb on the pump.

9Rotate the Chemical Trap so that it is retained by the spring clips.

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Operation and Maintenance Manual

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Contents Operation and Maintenance Manual Warranty Safety NoticesAcknowledgements Manual Part NumberEnglish WA R N I N GIs not in use Español Français Deutsch Italiano Dutch Veiligheidsvoorzieningen niet meerFollowing symbols are used on the equipment Contents Installation OverviewFront Panel Controls and Initial Startup OperationMaintenance Pump MaintenanceTroubleshooting IndexOperation and Maintenance Manual Introduction Operation and Maintenance Manual System Description Technical Information 355 SCD SpecificationsTechnical Information 255 NCD Physical Specifications Power requirementsVoltage Sulfur Chemiluminescence Detector Theory of OperationNitrogen Chemiluminescence Detector Dual Plasma Controller Dual Plasma Burner with the 355 SCDDescription of Major Components Dual Plasma BurnerCross-Section of the Dual Plasma Burner for the 355 SCD Cross-Section of the Dual Plasma Burner for the 255 NCD Ozone Generator Chemiluminescence Reaction Cell and Photomultiplier Tube355 SCD Left Side 355 SCD Right Side 255 NCD Left Side View Pressure Transducer Vacuum PumpChemical Trap Oil Coalescing FilterFID 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 Power Requirements Selecting a LocationEnvironmental Considerations Combustion Gas RequirementsTwo-stage pressure regulators Venting Gases Required Installation Tools Unpack and Inspect the InstrumentSet Up the Vacuum Pump Installing the Edwards RV5 Pump Oil-Sealed 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 Connect the Power Cord SCD 230 V Unit Rear Panel DiagramInstall the Dry Compressed Air or O2 Supply Install the Signal Output Cables Install the Dual Plasma Burner Additional informationInstall the Dual Plasma Controller Dual Plasma Controller Rear PanelCapillary Columns Install Column ConnectionsPacked Columns and Columns with an Outside Diameter 0.8 mm Install the Transfer Line Front Panel Controls and Initial Startup Power Controls Detector Front Panel ControlsSignal Controls Display Output ControlsDual Plasma Controller Controls Dual Plasma Controller Front PanelInitial Startup Vacuum TestRecorder Test Detector Interface Setup Initial CheckoutIgnition Operation Start-Up Procedure Detector Operation Detector Stability and ResponseColumn Bleed CokingContaminated Gases Fluctuating PressuresTypical Operating Conditions Typical Operating ConditionsDetection Limits Expected Detection Limits for Chromatographic ConditionsDaily Shutdown Instrument Shut-DownComplete Shutdown Using the 255 NCD in Nitrosamine Mode Special Operating ModesOperation and Maintenance Manual Operation and Maintenance Manual Maintenance Pump Maintenance Operating Life of Components for Edwards RV5 Vacuum PumpCleaning the Detector Changing the Oil Mist Filter RV5 Reaction Cell Cleaning EquipmentReaction Cell, PMT Housing and PMT Socket WA R N I N G Flow Sensor Calibration Detector Sensitivity MDLSCD 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 Power Problems Detector FuseVacuum Pump Fuse Dual Plasma Controller FusesFuse Positions on the Power Supply Board Ozone Generation Problems High Voltage TransformerPlugged Restrictor Lines Response Problems Temperature Reading Problems Diagnosing General Problems Troubleshooting Detector IssuesDetector gases Troubleshooting Pump Issues Troubleshooting Burner Issues Index Agilent Technologies, Inc