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SVC3-1

Section3

FLOW/PRESSURECONTROL

COMPONENTS

FLOW/PRESSURECONTROLCOMPONENTS

Flowandpressurecontrolcomponentsincludepressureregulators,pressuregauges,massflowcon-

trollers,capillarysolenoidvalves,detectorflowmanifoldblocks,andtheElectronicFlowSensor(EFS)

module.TherearemanyoptionsavailablefortheHP5890SeriesII.Maintenanceproceduresforthe

mostcommonitemsfoundintheinstrument.Proceduresaresuppliedtoremove,replace,and/or

cleanvarioussubassemblies,basedonthecurrentmaintenancephilosophy,i.e.,toallowreplacement

ofthelowestlevelcomponentsapplicableforaparticularassembly.

Specificpartnumbersarenotgiveninthissection.Forallreplacementpartnumbers,refertoSections

3and4oftheIPBportionofthisdocument(DetectorFlowManifoldAssembliesandInjectionPortFlow/

PressureControlModules,respectively).

Thisdocumentisnotmeanttoprovideinstructionforfirsttimeinstallationofanyoftheoptionsdis-

cussed.Add-onsheetsexistforjustthispurpose,andshouldbereferencedwhenperformingafirst

timeinstallation.

TABLEOFCONTENTS

FLOW/PRESSURECONTROLCOMPONENTS SVC3-1.........

PCOCEPC/MPCTroubleshooting SVC3-2................................

Remove/ReplaceInletFlowControlComponents SVC3-5....................

Remove/ReplaceSplit/SplitlessCapillaryInletSolenoidValve SVC3-7.........

Remove/ReplaceElectronicPressureControl(EPC)Components SVC3-11.....

Remove/ReplaceManualPressureControl(MPC)Components SVC3-14.......

Remove/ReplaceEPC/MPCPressureControlPCB SVC3-17..................

TypicalSwitchSettingsforEPC/MPCPCBs SVC3-18.........................

ReplaceElectronicFlowSensorModule SVC3-19...........................

ElectronicFlowSensor(EFS)Calibration SVC3-22...........................

SettingtheZEROCalibrationValue SVC3-22................................

SettingtheGAINCalibrationValue SVC3-23................................

EnteringSpecificZEROandGAINValues SVC3-24..........................

Replacing/RepairingaFlowManifoldBlock SVC3-25.........................

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HP 5890 Series II User Manual

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