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HP 5973 Hardware Manual

Mass selective detector
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Mass Selective Detector
Hardware Manual

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  • Page 1 ® HP 5973 Mass Selective Detector Hardware Manual...
  • Page 2 © Copyright 1998 Instrument Manual Conventions Safety class Hewlett-Packard Company Identification The HP 5973 Mass Selective Cautions Detector (MSD) is a Safety Each HP 5973 Mass Selective Cautions call attention to All Rights Reserved. Class I instrument and has Detector (MSD) is identified...
  • Page 3 HP 5973 Mass Selective Detector Hardware Manual...
  • Page 4 The HP 5973 Mass Selective Detector The HP 5973 MSD is a stand-alone capillary GC detector The HP 5973 Mass Selective Detector (MSD) is designed for use with the HP 6890 Series Gas Chromatograph. The MSD features: • Either a 90 L/sec vapor-diffusion or a 250 L/sec turbomolecular high vacuum pump •...
  • Page 5 Mass Selective Detector An optional gauge controller is available for measuring vacuum The HP 5973 MSD is equipped with a triode gauge tube. With an HP 59864B Gauge Controller, the tube can be used to measure pressure (high vacuum) in the vacuum manifold. Installation and operation of the gauge controller is described in this manual.
  • Page 6 In This Manual This manual describes the operation, troubleshooting, and maintenance of the HP 5973 Mass Selective Detector. Chapters 1 – 4 describe common operation, troubleshooting, and maintenance tasks. Chapters 5 – 8 contain reference material about the major systems of the MSD. Chapter 9 is a parts reference.

  • Page 7: Table Of Contents

    To measure column flow linear velocity, 46 To calculate column flow, 47 To tune the MSD, 48 To set the interface temperature from an HP 6890 GC, 49 To remove the MSD covers, 50 Upper MSD cover, 50 Lower MSD cover, 50...
  • Page 8 Peaks have precursors, 76 Peak widths are inconsistent, 76 Relative abundance of m/z 502 is less than 3%, 77 Spectra look different from those acquired with other HP MSDs, 77 High mass sensitivity is poor, 78 Pressure symptoms, 79 Foreline pressure is too high, 79...
  • Page 9 Contents Temperature symptoms, 82 Ion source will not heat up, 82 Mass filter (quad) heater will not heat up, 83 GC/MSD interface will not heat up, 83 Error messages, 84 Difficulty in mass filter electronics, 84 Difficulty with the electron multiplier supply, 84 Difficulty with the fan, 85 Difficulty with the HED supply, 85 Difficulty with the high vacuum pump, 85...
  • Page 10 Contents Chapter 4 Maintaining the MSD Before starting 94 Maintaining the vacuum system 101 To check and add foreline pump oil, 102 To drain the foreline pump, 104 To refill the foreline pump, 106 To replace the oil trap, 108 To check the diffusion pump fluid, 110 To separate the MSD from the GC, 112 To remove the diffusion pump, 114...
  • Page 11 Contents Maintaining the GC/MSD interface 172 To remove the GC/MSD interface heater and sensor, 173 To reinstall the GC/MSD interface heater and sensor, 175 Maintaining the electronics 177 To adjust the RF coils, 179 To replace the primary fuses, 181 Chapter 5 Vacuum System Diffusion pump MSD vacuum system, 186...
  • Page 12 Contents Chapter 7 Analyzer Ion source, 218 Ion source body, 218 Filaments, 219 Filament selection, 219 Emission current, 220 Electron energy, 220 Filament care, 221 Magnet, 221 Repeller, 221 Drawout plate and cylinder, 222 Ion focus, 222 Entrance lens, 222 Entrance lens offset, 222 Entrance lens gain, 222 Mass filter, 223...
  • Page 13 Electronics Side board, 236 Electronics module, 237 Main board, 238 Signal amplifier board, 239 HP-IB/MS control card, 240 AC board, 241 Pumpdown safety shutdown, 242 Power supplies, 243 Low voltage (ac-dc) power supply, 243 High voltage (HED) power supply, 243...
  • Page 14 Contents Chapter 9 Parts Electronics, 256 Vacuum system, 260 Analyzer, 268 GC/MSD interface, 274 Consumables and maintenance supplies, 276...
  • Page 15 To prepare a capillary column for installation, 20 To install a capillary column in a split/splitless inlet, 22 To condition a capillary column, 24 To install a capillary column without the installation tool, 26 To install a capillary column using the installation tool, 28 Installing GC Columns How to connect GC columns to the MSD...
  • Page 16 MSD has. The serial number tag on the lower front of the left side panel shows the model number. 0RGHO QXPEHU 9DFXXP V\VWHP 6RIWZDUH YDFXXP PRQLWRU HP G1098A Diffusion pump Foreline pressure HP G1099A Turbo pump...
  • Page 17 Installing GC Columns Table 1 GC column information Column diameter Column length Head pressure Column flow (mm) (meters) (psi) (ml/min) 0.100 1.83 0.200 58.8 37.3 22.0 30.3 0.250 32.3 18.5 18.5 0.32 25.9 (wide-bore) 14.0 0.53 4.41 (megabore) 1.85 Nominal dimensions Calculated values at 70 °C with vacuum compensation turned on Acceptable for turbo pump MSD only Not acceptable –...
  • Page 18 Installing GC Columns Conditioning a column before it is installed into the GC/MSD interface is essential A small portion of the capillary column stationary phase is often carried away by the carrier gas. This is called column bleed. Column bleed deposits traces of the stationary phase in the MSD ion source.
  • Page 19 Installing GC Columns : $ 5 1 , 1 * ,I \RX DUH XVLQJ K\GURJHQ DV D FDUULHU JDV GR QRW VWDUW FDUULHU JDV IORZ XQWLO WKH FROXPQ LV LQVWDOOHG LQ WKH 06' DQG WKH 06' KDV EHHQ SXPSHG GRZQ ,I WKH YDFXXP SXPSV DUH RII K\GURJHQ ZLOO DFFXPXODWH LQ WKH 06' DQG DQ H[SORVLRQ PD\ RFFXU 5HDG WKH +\GURJHQ &DUULHU *DV 6DIHW\ *XLGH  EHIRUH RSHUDWLQJ WKH 06' ZLWK K\GURJHQ FDUULHU JDV : $ 5 1 , 1 *...

  • Page 20: Installing Gc Columns

    Installing GC Columns To prepare a capillary column for installation To prepare a capillary column for installation Materials needed: Capillary column Column cutter (5181-8836) Ferrules 0.27-mm id, for 0.10-mm id columns (5062-3518) 0.37-mm id, for 0.20-mm id columns (5062-3516) 0.40-mm id, for 0.25-mm id columns (5181-3323) 0.47-mm id, for 0.32-mm id columns (5062-3514) 0.74-mm id, for 0.53-mm id columns (5062-3512) Gloves, clean...
  • Page 21 Installing GC Columns To prepare a capillary column for installation Capillary column Column cutter Ferrule Inlet column nut Septum...

  • Page 22: To Install A Capillary Column In A Split/Splitless Inlet

    (8650-0029) Metric ruler Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510) To install columns in other types of inlets, refer to your HP 6890 Series Gas Chromatograph Operating Manual. 1 Prepare the column for installation (page 20). 2 Position the column so it extends 4 to 6 mm past the end of the ferrule.
  • Page 23 Installing GC Columns To install a capillary column in a split/splitless inlet Insulation cup Reducing nut Capillary column 4 to 6 mm Ferrule (not visible) Inlet column nut Septum...

  • Page 24: To Condition A Capillary Column

    Installing GC Columns To condition a capillary column To condition a capillary column Materials needed: Carrier gas, (99.999% pure or better) Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510) : $ 5 1 , 1 * 'R QRW FRQGLWLRQ \RXU FDSLOODU\ FROXPQ ZLWK K\GURJHQ +\GURJHQ DFFXPXODWLRQ LQ WKH *& RYHQ FDQ UHVXOW LQ DQ H[SORVLRQ ,I \RX SODQ WR XVH K\GURJHQ DV \RXU FDUULHU JDV ILUVW FRQGLWLRQ WKH FROXPQ ZLWK XOWUDSXUH  RU EHWWHU LQHUW JDV VXFK DV KHOLXP QLWURJHQ RU DUJRQ...
  • Page 25 Installing GC Columns To condition a capillary column...

  • Page 26: To Install A Capillary Column Without The Installation Tool

    Installing GC Columns To install a capillary column without the installation tool To install a capillary column without the installation tool Materials needed: Column cutter (5181-8836) Ferrules 0.3-mm id, for 0.10-mm id columns (5062-3507) 0.4-mm id, for 0.20- and 0.25-mm id columns (5062-3508) 0.5-mm id, for 0.32-mm id columns (5062-3506) 0.8-mm id, for 0.53-mm id columns (5062-3538) Flashlight...
  • Page 27 Installing GC Columns To install a capillary column without the installation tool Column Interface column nut GC/MSD interface (GC end) Oven wall GC side panel Interface cover Vacuum manifold GC/MSD interface (MSD end) 1 to 2 mm GC oven 9 Tighten the nut 1/4 to 1/2 turn. Check tightness after one or two heat cycles.

  • Page 28: To Install A Capillary Column Using The Installation Tool

    Installing GC Columns To install a capillary column using the installation tool To install a capillary column using the installation tool Materials needed: Column cutter (5181-8836) Column installation tool (G1099-20030) Ferrules 0.3-mm id, for 0.10-mm id columns (5062-3507) 0.4-mm id, for 0.20- and 0.25-mm id columns (5062-3508) 0.5-mm id, for 0.32-mm id columns (5062-3506) 0.8-mm id, for 0.53-mm id columns (5062-3538) Gloves, clean...
  • Page 29 Installing GC Columns To install a capillary column using the installation tool Column Interface column nut Column installation tool 1 to 2 mm Interface ferrule Septum 8 Clean the outside of the end of the column with a lint-free cloth moistened with methanol.

  • Page 31: Operating The Msd

    To measure column flow linear velocity, 46 To calculate column flow, 47 To tune the MSD, 48 To set the interface temperature from an HP 6890 GC, 49 To remove the MSD covers, 50 To vent the MSD, 52 To open the vacuum manifold, 54...
  • Page 32 Operating the MSD Operation of the MSD is primarily from the data system Except for the main power switch, the MSD has no switches, knobs or other physical controls. You control the MSD through a data system equipped with MSD Productivity ChemStation software. The software performs tasks such as pumpdown, monitoring pressures, setting temperatures, tuning, and preparing to vent.
  • Page 33 Each MSD is equipped with a triode gauge tube. If your MSD is also equipped with an HP 59864B Gauge Controller, the triode gauge can measure the pressure in the vacuum manifold. The high vacuum pressure measured by the triode gauge cannot be monitored through the data system.
  • Page 34 The GC/MSD interface heater is powered and controlled by the Thermal Aux #2 heated zone of the HP 6890 Series GC. The GC/MSD interface temperature can be set and monitored from the data system or from the GC keypad.
  • Page 35 Operating the MSD : $ 5 1 , 1 * 0DNH VXUH WKH *&06' LQWHUIDFH DQG WKH DQDO\]HU ]RQHV DUH FRRO EHORZ ƒ& EHIRUH \RX YHQW WKH 06' ƒ& LV VWLOO KRW HQRXJK WR EXUQ VNLQ DOZD\V ZHDU FORWK JORYHV ZKHQ KDQGOLQJ DQDO\]HU SDUWV : $ 5 1 , 1 * ,I \RX DUH XVLQJ K\GURJHQ DV D FDUULHU JDV WKH FDUULHU JDV IORZ PXVW EH RII EHIRUH WXUQLQJ...

  • Page 36: To View Msd Analyzer Temperature And Vacuum Status

    Operating the MSD To view MSD analyzer temperature and vacuum status To view MSD analyzer temperature and vacuum status Software changes The software is revised periodically. If the steps in this procedure do not match your MSD ChemStation software, refer to the manuals and online help supplied with the software for more information.
  • Page 37 Operating the MSD To view MSD analyzer temperature and vacuum status...

  • Page 38: To Set Monitors For Msd Temperature And Vacuum Status

    Operating the MSD To set monitors for MSD temperature and vacuum status To set monitors for MSD temperature and vacuum status Monitors display the current value of a single instrument parameter. They can be added to the standard instrument control window. Monitors can be set to change color if the actual parameter value varies beyond a user-determined limit from the parameter setpoint.
  • Page 39 Operating the MSD To set monitors for MSD temperature and vacuum status...

  • Page 40: To Set The Msd Analyzer Temperatures

    Operating the MSD To set the MSD analyzer temperatures To set the MSD analyzer temperatures Setpoints for the MSD ion source and mass filter (quad) temperatures are stored in the current tune (*.u) file. When a method is loaded, the setpoints in the tune file associated with that method are downloaded automatically.
  • Page 41 Operating the MSD To set the MSD analyzer temperatures...

  • Page 42: To Set The Interface Temperature From The Chemstation

    Operating the MSD To set the interface temperature from the ChemStation To set the interface temperature from the ChemStation Software changes The software is revised periodically. If the steps in this procedure do not match your MSD ChemStation software, refer to the manuals and online help supplied with the software for more information.
  • Page 43 Operating the MSD To set the interface temperature from the ChemStation...

  • Page 44: To Monitor High Vacuum Pressure

    To monitor high vacuum pressure To monitor high vacuum pressure Materials needed: Gauge controller (HP 59864B) Triode gauge cable (8120-6573) : $ 5 1 , 1 * 1HYHU FRQQHFW RU GLVFRQQHFW WKH FDEOH IURP WKH WULRGH JDXJH WXEH ZKLOH WKH 06' LV XQGHU...
  • Page 45 Operating the MSD To monitor high vacuum pressure Table 2 Typical MSD pressure readings for various helium carrier gas flow rates Diffusion pump MSD Column flow (ml/min) Triode gauge reading (Torr) Foreline gauge reading (Torr) 5.0 × 10 7.5 × 10 1.0 ×...

  • Page 46: To Measure Column Flow Linear Velocity

    Operating the MSD To measure column flow linear velocity To measure column flow linear velocity Materials needed: Syringe 1 Set Data Acquisition for manual injection and selected ion monitoring (SIM) of m/z 28. 2 Click Prep Run 3 Inject about 1 µl of air into the injection port and click Start Run 4 Wait until a peak elutes at m/z 28.

  • Page 47: To Calculate Column Flow

    Operating the MSD To calculate column flow To calculate column flow 1 In the Instrument Control view, click the Columns icon. 2 Check that the correct column dimensions are entered. 3 Type the desired value in the pressure field. 4 If the Average Velocity displayed is different from that obtained on page 46, click the button to calibrate the column dimensions.

  • Page 48: To Tune The Msd

    Operating the MSD To tune the MSD To tune the MSD Software changes The software is revised periodically. If the steps in this procedure do not match your MS ChemStation software, refer to the manuals and online help supplied with the software for more information.

  • Page 49: To Set The Interface Temperature From An Hp 6890 Gc

    Operating the MSD To set the interface temperature from an HP 6890 GC To set the interface temperature from an HP 6890 GC 1 Press the Aux # key on the GC keypad. 2 Press By default, the GC/MSD interface is powered by heated zone Thermal Aux #2 on the HP 6890 Series GC.

  • Page 50: To Remove The Msd Covers

    Operating the MSD To remove the MSD covers To remove the MSD covers Materials needed: Screwdriver, TORX T-15 (8710-1622) The upper MSD cover is removed for venting and for many maintenance proce- dures. The lower MSD cover is removed to check the fluid level in the diffusion pump and for a few maintenance procedures.
  • Page 51 Operating the MSD To remove the MSD covers Upper cover Lower cover...

  • Page 52: To Vent The Msd

    Operating the MSD To vent the MSD To vent the MSD Software changes The software is revised periodically. If the steps in this procedure do not match your MSD ChemStation software, refer to the manuals and online help supplied with the software for more information. If the data system is not working correctly, the MSD can still be vented safely.
  • Page 53 Operating the MSD To vent the MSD Vent valve knob : $ 5 1 , 1 * $W ƒ& DQDO\]HU SDUWV DUH VWLOO KRW HQRXJK WR EXUQ EDUH VNLQ 'R QRW KDQGOH KRW SDUWV & $ 8 7 , 2 1 Always wear clean gloves while handling any parts that go inside the vacuum manifold.

  • Page 54: To Open The Vacuum Manifold

    Operating the MSD To open the vacuum manifold To open the vacuum manifold Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Wrist strap, anti-static small (9300-0969)swe medium (9300-1257) large (9300-0970) & $ 8 7 , 2 1 Electrostatic discharges to analyzer components are conducted to the side board where they can damage sensitive components.
  • Page 55 Operating the MSD To open the vacuum manifold Front thumbscrew Rear thumbscrew – do not tighten Source power cable Side board control cable Side plate 4 Gently open the side plate. & $ 8 7 , 2 1 If you feel resistance, stop. Do not try to force the side plate open. Applying force will ruin the side plate.

  • Page 56: To Close The Vacuum Manifold

    Operating the MSD To close the vacuum manifold To close the vacuum manifold Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) 1 Make sure all the internal analyzer electrical leads are correctly attached. 2 Check the side plate O-ring. Make sure the O-ring has a very light coat of Apiezon high vacuum grease.
  • Page 57 Operating the MSD To close the vacuum manifold Front thumbscrew Rear thumbscrew – do not tighten Source power cable Side board control cable Side plate...

  • Page 58: To Pump Down The Msd

    Operating the MSD To pump down the MSD To pump down the MSD Software changes The software is revised periodically. If the steps in this procedure do not match your MSD ChemStation software, refer to the manuals and online help supplied with the software for more information.
  • Page 59 Operating the MSD To pump down the MSD 5 The software will prompt you to turn on the GC/MSD interface heater and GC oven. Click when you have done so. The software will turn on the ion source and mass filter (quad) heaters. The tem- perature setpoints are stored in the current autotune (*.u) file.

  • Page 60: To Connect The Optional Gauge Controller

    YDFXXP 5LVN RI LPSORVLRQ DQG LQMXU\ GXH WR EURNHQ JODVV H[LVWV & $ 8 7 , 2 1 use an HP 59864A (older model) triode gauge controller during data acquisition. This model can be used for diagnostic purposes RQO\. & $ 8 7 , 2 1 Be sure to orient the cable and the gauge tube as illustrated.
  • Page 61 Operating the MSD To connect the optional gauge controller Triode gauge tube Triode gauge cable Gauge controller Triode gauge cable Power cord...

  • Page 62: To Move Or Store The Msd

    9 Switch the MSD on to establish a rough vacuum. Verify that the foreline pressure is below 300 mTorr or the turbo pump speed greater than 50%. Switch the MSD off. 11 Reinstall the upper MSD cover. 12 Disconnect the HP-IB, remote, and power cables.
  • Page 63 Operating the MSD To move or store the MSD Front side plate thumbscrew Rear side plate thumbscrew The MSD can now be stored or moved. The foreline pump cannot be discon- nected. It must be moved with the MSD. Make sure the MSD remains upright and is never tipped on its side or inverted.

  • Page 64: To Vent The Msd Without The Chemstation

    Operating the MSD To vent the MSD without the ChemStation To vent the MSD without the ChemStation If the MSD ChemStation is functioning, use the procedure on page 52. This proce- dure should only be used if it is absolutely necessary. 1 If your system is equipped with a gauge controller, switch off the triode gauge tube and gauge controller.
  • Page 65 General symptoms, 68 Chromatographic symptoms, 70 Mass spectral symptoms, 75 Pressure symptoms, 79 Temperature symptoms, 82 Error messages, 84 Air leaks, 89 Contamination, 90 Troubleshooting the MSD How to identify the symptoms and causes of problems in your MSD...
  • Page 66 Troubleshooting the MSD This chapter is a quick reference to symptoms and possible causes of the most common problems experienced by the HP 5973 Mass Selective Detec- tor (MSD). Related symptoms are grouped in these categories: • General symptoms • Chromatographic symptoms •...
  • Page 67 Troubleshooting the MSD If the material in this chapter and in the online help proves insufficient to help you diagnose a problem, contact your Hewlett-Packard service repre- sentative.

  • Page 68: General Symptoms

    Troubleshooting the MSD General symptoms General symptoms This section describes symptoms you might observe when first turning on the GC/MSD system. All of these symptoms would prevent operation of the system. GC does not turn on This refers to a condition in which nothing happens when the GC is switched on. The GC fans do not turn on and the keypad display does not light.

  • Page 69: Fan For The High Vacuum Pump Is Not Operating

    The data sys- tem then downloads the instrument control software to the HP-IB/MS control card. When this occurs, the status LEDs will all light for a few seconds and then begin to operate normally, leaving the power LED on and the others off.

  • Page 70: Chromatographic Symptoms

    Troubleshooting the MSD Chromatographic symptoms Chromatographic symptoms This section describes symptoms you may observe in the chromatograms gener- ated by data acquisition. In general, these symptoms do not prevent you from operating your GC/MSD system. They indicate, however, that the data you are acquiring may not be the best data obtainable.

  • Page 71: Does Not Pass Tune

    Troubleshooting the MSD Chromatographic symptoms Does not pass tune • Calibration vial is empty • Excessive foreline or vacuum manifold pressure • Very dirty ion source • Calibration valve is not working correctly • Bad signal cable connection • Filament has failed or is not connected correctly •...

  • Page 72: Peaks Have Flat Tops

    Troubleshooting the MSD Chromatographic symptoms Peaks have flat tops • Insufficient solvent delay • Incorrect scale on the display • Injection is too large • Electron multiplier voltage is too high Peaks have split tops • Bad injection technique • Injection is too large Baseline is rising •...

  • Page 73: Baseline Wanders

    Troubleshooting the MSD Chromatographic symptoms Baseline wanders • Insufficient carrier gas supply pressure* • Malfunctioning flow or pressure regulator* • Intermittent leak in the injection port* * These could cause a fault condition in the GC that would prevent the GC from operating.

  • Page 74: Poor Sensitivity

    Troubleshooting the MSD Chromatographic symptoms Poor sensitivity • Incorrect tuning • Tune file that does not match the type of analysis • Repeller voltage is too low • Incorrect temperatures (oven, GC/MSD interface, ion source, or mass filter) • Incorrect sample concentration •...

  • Page 75: Mass Spectral Symptoms

    Troubleshooting the MSD Mass spectral symptoms Mass spectral symptoms This section describes symptoms you might observe in mass spectra. Some of these symptoms will appear in the mass spectra of samples. Others you will observe only in a tune report. Some of these symptoms have causes that can be corrected by the operator.

  • Page 76: Mass Assignments Are Incorrect

    Troubleshooting the MSD Mass spectral symptoms Mass assignments are incorrect Small shape changes at the top of the mass peaks can cause 0.1 amu shifts in mass assignments. Shifts greater than 0.2 amu indicate a possible malfunction. • MSD has not had enough time to reach thermal equilibrium •...

  • Page 77: Relative Abundance Of M/Z 502 Is Less Than 3

    • Incorrect dc polarity on the quadrupole mass filter Spectra look different from those acquired with other HP MSDs Ion ratios are different from those in older HP MSDs. This is due to the HED detec- tor, and is normal. To get spectra similar to older MSDs, use Standard Spectra Tune available in the Manual Tune view.

  • Page 78: High Mass Sensitivity Is Poor

    Troubleshooting the MSD Mass spectral symptoms High mass sensitivity is poor This refers to a condition where the absolute abundance at the upper end of the mass range is poor. Absolute abundance should not be confused with the relative abundance (percentage) of m/z 502 to m/z 69. Sensitivity at high masses can be excellent even if the relative abundance of m/z 502 is low.

  • Page 79: Pressure Symptoms

    Troubleshooting the MSD Pressure symptoms Pressure symptoms This section describes unusual pressure readings and their possible causes. The symptoms in this section are based on typical pressures. At typical column flow rates (0.1 - 2.0 ml/minute), the foreline pressure will be approximately 20 to 100 mTorr.

  • Page 80: Foreline Pressure Is Too Low

    Troubleshooting the MSD Pressure symptoms Foreline pressure is too low If the pressures you observe are below 20 mTorr, check for the following: • Column (carrier gas) flow is too low • Column plugged or crushed by an overtightened nut •...

  • Page 81: Power Indicator On The Gauge Controller Does Not Light

    Troubleshooting the MSD Pressure symptoms Power indicator on the gauge controller does not light • Unplugged gauge controller power cord • Incorrect or inadequate line voltage at the electrical outlet • Failed gauge controller fuse...

  • Page 82: Temperature Symptoms

    Troubleshooting the MSD Temperature symptoms Temperature symptoms The MSD has three heated zones: • Ion source ( Source in the MSD ChemStation software) • Mass filter ( in the MSD ChemStation software) Quad • GC/MSD interface ( Thermal Aux #2 in the MSD ChemStation software) Each of these heated zones has a heater cartridge and temperature sensor.

  • Page 83: Mass Filter (Quad) Heater Will Not Heat Up

    Troubleshooting the MSD Temperature symptoms Mass filter (quad) heater will not heat up • High vacuum pump is off or has not reached normal operating conditions* • Incorrect temperature setpoint • Mass filter has not had enough time to reach temperature setpoint •...

  • Page 84: Error Messages

    Troubleshooting the MSD Error messages Error messages Sometimes, a problem in your MSD will cause an error message to appear in the MSD ChemStation software. Some error messages appear only during tuning. Other messages will appear during tuning or data acquisition. Sometimes, instead of a message, only a number will appear.

  • Page 85: Difficulty With The Fan

    Troubleshooting the MSD Error messages Difficulty with the fan If a cooling fan fault occurs, the vacuum control electronics automatically shut off the high vacuum pump and the ion source and mass filter heaters. Therefore, the message: The system is in vent state may also appear. It is important to note that even though the high vacuum pump is off, the vacuum manifold may not actually be vented.

  • Page 86: Turbomolecular Pump

    Troubleshooting the MSD Error messages Turbomolecular pump • Large vacuum leak is preventing the turbo pump from reaching 50% of full speed • Foreline pump is not working correctly • Turbo pump is not working correctly • Turbo pump controller is not working correctly •...

  • Page 87: Temperature Control Disabled

    Troubleshooting the MSD Error messages Temperature control disabled • One of the heater fuses has failed • MSD electronics are not working correctly Temperature control fault This indicates that something has gone wrong with the temperature control of either the ion source or mass filter (quad) heater. The cause can be further iso- lated by selecting Status/MS Temp Ctlr Status in the Diagnostics/Vacuum Control view.

  • Page 88: The System Is In Vent State

    Troubleshooting the MSD Error messages The system is in vent state Although the message says the system is in vent state, if the fault has just occurred the MSD may actually still be under vacuum and the diffusion pump may still be hot or the turbo pump may still be at high speed.

  • Page 89: Air Leaks

    Troubleshooting the MSD Air leaks Air leaks Air leaks are a problem for any instrument that requires a vacuum to operate. Leaks are generally caused by vacuum seals that are damaged or not fastened cor- rectly. Symptoms of leaks include: •...

  • Page 90: Contamination

    Troubleshooting the MSD Contamination Contamination Contamination is usually identified by excessive background in the mass spectra. It can come from the GC or from the MSD. The source of the contamination can sometimes be determined by identifying the contaminants. Some contaminants are much more likely to originate in the GC.
  • Page 91 Troubleshooting the MSD Contamination Table 3 Common contaminants Ions ( m/z ) Compound Possible source 18, 28, 32, 44 or 14, 16 0, N , CO or N, O Residual air and water, air leaks, outgassing from Vespel ferrules 31, 51, 69, 100, 119, 131, PFTBA and related ions PFTBA (tuning compound) 169, 181, 214, 219, 264, 376,...

  • Page 93: Maintaining The Msd

    Maintaining the vacuum system, 101 Maintaining the analyzer, 144 Maintaining the GC/MSD interface, 172 Maintaining the electronics, 177 Maintaining the MSD How to perform common maintenance procedures for the MSD. Many of these procedures are demonstrated on the HP MSD Reference Collection CD-ROM.

  • Page 94: Before Starting

    Before starting You can perform much of the maintenance required by your MSD. For your safety, read all of the information in this introduction before performing any maintenance tasks. Some parts of the MSD require regularly scheduled maintenance Common maintenance tasks are listed in Table 4. Performing these tasks when scheduled can reduce operating problems, prolong system life, and reduce overall operating costs.
  • Page 95 MSD shipping kit or MSD tool kit. You must supply others yourself. Each maintenance procedure includes a list of the materials required for that procedure. Tables 5 and 6 summarize these. Table 5 Tools Description HP part number Ball driver 1.5-mm 8710-1570 2.0-mm 8710-1804 2.5-mm...
  • Page 96 Maintaining the MSD Table 6 Spare parts and supplies Description HP part number Abrasive paper 5061-5896 Alumina abrasive powder 8660-0791 Aluminum foil, clean ———— Beakers, glass, 50 ml and 500 ml ———— Cloths, clean, lint-free (quantity 20) 05980-60051 Container, for catching old foreline pump oil, ≈ 500 ml ————...
  • Page 97 Maintaining the MSD Many parts of the MSD carry high voltages that are potentially dangerous Whenever the MSD is plugged in, even if the power switch is off, potentially dangerous voltage (120 V ac or 200/240 V ac) exists on: •...
  • Page 98 Maintaining the MSD One or two procedures in this chapter require access to the inside of the MSD while the power switch is on. Do not remove any of the electronics safety covers in any of these procedures. To reduce the risk of electric shock, follow the procedures carefully.
  • Page 99 Maintaining the MSD Chemical residue is another potential danger Only a small portion of your sample is ionized by the ion source. The majority of any sample passes through the ion source without being ionized. It is pumped away by the vacuum system. As a result, the exhaust from the foreline pump will contain traces of the carrier gas and your samples.
  • Page 100 Maintaining the MSD Electrostatic discharge is a threat to the MSD electronics during maintenance All of the printed circuit boards in the MSD contain components that can be damaged by electrostatic discharge (ESD). Do not handle or touch these boards unless absolutely necessary. In addition, wires, contacts, and cables can conduct ESD to the electronics boards to which they are connected.

  • Page 101: Maintaining The Vacuum System

    If you need more information about the locations or functions of vacuum system components, refer to Chapter 5, Vacuum System, on page 183. Most of the procedures in this chapter are illustrated with video clips in the HP 5973 MSD Reference Collection CD-ROM.

  • Page 102: To Check And Add Foreline Pump Oil

    Maintaining the MSD To check and add foreline pump oil To check and add foreline pump oil Materials needed: Foreline pump oil (6040-0834) Funnel A slow loss of oil is normal for the foreline pump. Therefore, it is especially impor- tant to check the oil level regularly.
  • Page 103 Maintaining the MSD To check and add foreline pump oil Fill cap Upper line Oil level window Lower line...

  • Page 104: To Drain The Foreline Pump

    Maintaining the MSD To drain the foreline pump To drain the foreline pump Materials needed: Book or other solid object approximately 5 cm thick Container for catching old pump oil, 500 ml Gloves, oil- and solvent-resistant Screwdriver, flat-blade, large (8730-0002) 1 Vent the MSD (page 52).
  • Page 105 Maintaining the MSD To drain the foreline pump Fill cap Pump motor Drain plug...

  • Page 106: To Refill The Foreline Pump

    Maintaining the MSD To refill the foreline pump To refill the foreline pump Materials needed: Foreline pump oil (6040-0834) – approximately 0.28 liters required Funnel Gloves, oil- and solvent-resistant Screwdriver, flat-blade, large (8730-0002) 1 Drain the foreline pump (page 104). 2 Reinstall the drain plug.
  • Page 107 Maintaining the MSD To refill the foreline pump Fill cap Upper line Oil level window Drain plug...

  • Page 108: To Replace The Oil Trap

    Maintaining the MSD To replace the oil trap To replace the oil trap Materials needed: Gloves, oil- and solvent-resistant Oil trap, foreline exhaust (3150-0761) If you are using the supplied oil trap on the exhaust port of the foreline pump, you should replace the trap whenever the white filter element turns brown.
  • Page 109 Maintaining the MSD To replace the oil trap Oil trap Clamp O-ring assembly Oil trap adapter Foreline pump...

  • Page 110: To Check The Diffusion Pump Fluid

    Maintaining the MSD To check the diffusion pump fluid To check the diffusion pump fluid Materials needed: Screwdriver, TORX T-15 (8710-1622) 1 Remove the upper and lower MSD covers (page 50). : $ 5 1 , 1 * 'R QRW UHPRYH DQ\ RWKHU FRYHUV 5HPRYLQJ RWKHU FRYHUV PD\ H[SRVH KD]DUGRXV YROWDJHV 2 Check the diffusion pump fluid level.
  • Page 111 Maintaining the MSD To check the diffusion pump fluid Fluid level window (sight glass)

  • Page 112: To Separate The Msd From The Gc

    Maintaining the MSD To separate the MSD from the GC To separate the MSD from the GC Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510) Materials needed: 1 Vent the MSD (page 52). 2 Turn off the GC. 3 Remove the capillary column from the GC/MSD interface. : $ 5 1 , 1 * 0DNH VXUH WKH *&06' LQWHUIDFH DQG *&...
  • Page 113 Maintaining the MSD To separate the MSD from the GC...

  • Page 114: To Remove The Diffusion Pump

    Maintaining the MSD To remove the diffusion pump To remove the diffusion pump Materials needed: Aluminum foil, clean Gloves, oil-resistant 1 Vent the MSD (page 52). 2 Separate the MSD from the GC (page 112). : $ 5 1 , 1 * 7KH GLIIXVLRQ SXPS RSHUDWHV DW YHU\ KLJK WHPSHUDWXUHV 0DGH VXUH LW KDV FRROHG EHIRUH KDQGOLQJ LW 3 Disconnect the foreline gauge assembly from the diffusion pump outlet.
  • Page 115 Maintaining the MSD To remove the diffusion pump Foreline gauge assembly KF50 clamp O-ring assembly Diffusion pump Diffusion pump outlet 10 Remove the diffusion pump through the side of the MSD. You may have to tilt the pump slightly to remove it. Do not tilt the pump past 45° if the pump is warm.

  • Page 116: To Replace The Diffusion Pump Fluid

    Maintaining the MSD To replace the diffusion pump fluid To replace the diffusion pump fluid Materials needed: Aluminum foil, clean Cloths, clean, lint-free (05980-60051) Container for old diffusion pump fluid Diffusion pump fluid, 18.5 ml (6040-0809) – 2 required Gloves oil- and solvent-resistant thermally insulated 1 Remove the diffusion pump from the MSD (page 114).
  • Page 117 Maintaining the MSD To replace the diffusion pump fluid 5 Wipe clean the diffusion pump flange on the vacuum manifold. Follow the instructions on the bottle for pre-heating the diffusion pump fluid. 6 Pour new diffusion pump fluid into diffusion pump until the fluid level is within the range.

  • Page 118: To Reinstall The Diffusion Pump

    To reinstall the diffusion pump Materials needed: Gloves, oil-resistant Vacuum cleaner, non-ESD generating (HP 92175V or equivalent) This procedure works best with two people, one to hold the pump and one to install the clamp. 1 Vacuum the fan that cools the diffusion pump.
  • Page 119 Maintaining the MSD To reinstall the diffusion pump Foreline gauge assembly KF50 clamp O-ring assembly Diffusion pump Diffusion pump outlet...

  • Page 120: To Reconnect The Msd To The Gc

    Maintaining the MSD To reconnect the MSD to the GC To reconnect the MSD to the GC Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510) Materials needed: 1 Position the MSD so the end of the GC/MSD interface is a few inches from the GC.
  • Page 121 Maintaining the MSD To reconnect the MSD to the GC...

  • Page 122: To Remove The Calibration Vial

    Maintaining the MSD To remove the calibration vial To remove the calibration vial Materials needed: None 1 Stop any tuning or data acquisition. 2 Turn off the analyzer. There are several ways to turn off the analyzer: • In the Diagnostics/Vacuum Control view, select from the Diagnostics MS OFF menu.
  • Page 123 Maintaining the MSD To remove the calibration vial Calibration valve Collar Calibration vial...

  • Page 124: To Refill And Reinstall The Calibration Vial

    Maintaining the MSD To refill and reinstall the calibration vial To refill and reinstall the calibration vial Materials needed: PFTBA (05971-60571) or other tuning compound 1 Remove the calibration vial (page 122). 2 Pour PFTBA into the vial. Leave 6-mm of the vial unfilled. 3 Push the calibration vial into the valve as far as possible.
  • Page 125 Maintaining the MSD To refill and reinstall the calibration vial Calibration valve Collar 6 mm Calibration vial...

  • Page 126: To Remove The Foreline Gauge

    Maintaining the MSD To remove the foreline gauge To remove the foreline gauge Materials needed: Screwdriver, flat-blade, large (8730-0002) 1 Vent the MSD (page 52). 2 Separate the MSD from the GC (page 112). : $ 5 1 , 1 * 7KH IRUHOLQH SXPS DQG GLIIXVLRQ SXPS PD\ VWLOO EH KRW 3 Unplug the foreline gauge cable from the foreline gauge.
  • Page 127 Maintaining the MSD To remove the foreline gauge Foreline hose and hose clamp Foreline gauge assembly Diffusion pump outlet Foreline gauge Foreline gauge cable...

  • Page 128: To Reinstall A Foreline Gauge

    Maintaining the MSD To reinstall a foreline gauge To reinstall a foreline gauge Materials needed: Foreline gauge assembly (G1099-60545) Screwdriver, flat-blade, large (8730-0002) 1 Connect a new foreline gauge assembly to the foreline hose. 2 Tighten the hose clamp. 3 Reconnect the foreline gauge cable to the foreline gauge. 4 Reconnect the foreline gauge assembly to the diffusion pump outlet.
  • Page 129 Maintaining the MSD To reinstall a foreline gauge Foreline hose and hose clamp Foreline gauge assembly Diffusion pump outlet Foreline gauge Foreline gauge cable...

  • Page 130: To Remove The Calibration Valve

    Maintaining the MSD To remove the calibration valve To remove the calibration valve Materials needed: Screwdriver, TORX T-15 (8710-1622) 1 Vent the MSD (page 52). 2 Disconnect the calibration valve cable from the connector next to the fan. 3 Loosen the collar and remove the calibration vial. Turn the collar counterclockwise as viewed from the bottom (vial side) of the thumbscrew.
  • Page 131 Maintaining the MSD To remove the calibration valve Calibration valve O-ring Front end plate Calibration valve Collar Calibration vial...

  • Page 132: To Reinstall A Calibration Valve

    Maintaining the MSD To reinstall a calibration valve To reinstall a calibration valve Materials needed: Calibration valve for diffusion pump (G1099-60200) for turbomolecular pump (G1099-60203) O-ring, for calibration valve (0905-1217) – replace if the old O-ring is damaged PFTBA (05971-60571) or other tuning compound Screwdriver, TORX T-15 (8710-1622) 1 Remove the old calibration valve (page 130).
  • Page 133 Maintaining the MSD To reinstall a calibration valve Calibration valve O-ring Front end plate Calibration valve Collar Calibration vial...

  • Page 134: To Replace The Fan For The High Vacuum Pump

    Maintaining the MSD To replace the fan for the high vacuum pump To replace the fan for the high vacuum pump Materials needed: Fan (3160-1037) Screwdriver, TORX T-15 (8710-1622) 1 Vent the MSD (page 52). 2 Remove the upper and lower MSD covers (page 50). 3 Disconnect the fan wiring from the connector on the MSD frame.
  • Page 135 Maintaining the MSD To replace the fan for the high vacuum pump Fan wiring – disconnect from back side of fan also Safety grill...

  • Page 136: To Remove The Triode Gauge Tube

    Maintaining the MSD To remove the triode gauge tube To remove the triode gauge tube Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) 1 Vent the MSD (page 52). 2 Disconnect the cable from the triode gauge tube. : $ 5 1 , 1 * 1HYHU FRQQHFW RU GLVFRQQHFW WKH FDEOH IURP WKH WULRGH JDXJH WXEH ZKLOH WKH 06' LV XQGHU YDFXXP 7KH VWUHVV FRXOG FDXVH WKH WXEH WR LPSORGH 3 Loosen the triode gauge collar by turning it counterclockwise.
  • Page 137 Maintaining the MSD To remove the triode gauge tube Baffle Triode gauge tube Triode gauge cable Triode gauge collar...

  • Page 138: To Reinstall A Triode Gauge Tube

    Maintaining the MSD To reinstall a triode gauge tube To reinstall a triode gauge tube Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Triode gauge tube (0960-0897) 1 Remove the old triode gauge tube (page 136). 2 Slide the baffle into the open end of the new triode gauge tube. Wear clean gloves when handling the baffle and new triode gauge tube.
  • Page 139 Maintaining the MSD To reinstall a triode gauge tube Baffle Triode gauge tube Triode gauge cable Triode gauge collar...

  • Page 140: To Lubricate The Side Plate O-Ring

    Maintaining the MSD To lubricate the side plate O-ring To lubricate the side plate O-ring Materials needed: Cloths, clean (05980-60051) Gloves, clean, lint-free large (8650-0030) small (8650-0029) Grease, Apiezon L, high vacuum (6040-0289) The side plate O-ring needs a thin coat of grease to ensure a good vacuum seal. If the side plate O-ring appears dry, or does not seal correctly, lubricate it using this procedure.
  • Page 141 Maintaining the MSD To lubricate the side plate O-ring Side plate O-ring...

  • Page 142: To Lubricate The Vent Valve O-Ring

    Maintaining the MSD To lubricate the vent valve O-ring To lubricate the vent valve O-ring Materials needed: Cloths, clean (05980-60051) Gloves, clean, lint-free large (8650-0030) small (8650-0029) Grease, Apiezon L, high vacuum (6040-0289) O-ring, vent valve (0905-1217) - replace if the old O-ring is worn or damaged The vent valve O-ring needs a thin coat of lubrication to ensure a good vacuum seal and smooth operation.
  • Page 143 Maintaining the MSD To lubricate the vent valve O-ring Front end plate Vent valve O-ring Vent valve knob 6 Reinstall the vent valve knob. & $ 8 7 , 2 1 Be very careful when reinstalling the vent valve knob. It is very easy to cross thread the knob and damage the threads in the front end plate.

  • Page 144: Maintaining The Analyzer

    Maintaining the analyzer The analyzer requires no periodic maintenance None of the analyzer components requires periodic maintenance. Some tasks, however, must be performed when MSD behavior indicates they are necessary. These tasks include: • Cleaning the ion source • Replacing filaments •...
  • Page 145 If you need more information about the locations or functions of analyzer components, refer to Chapter 7, Analyzer, on page 215. Most of the procedures in this chapter are illustrated with video clips in the HP 5973 MSD Reference Collection CD-ROM.

  • Page 146: To Remove The Ion Source

    Maintaining the MSD To remove the ion source To remove the ion source Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Pliers, long-nose (8710-1094) 1 Vent the MSD (page 52). 2 Open the vacuum manifold (page 54). Make sure you use an anti-static wrist strap and take other anti-static precautions before touching analyzer components.
  • Page 147 Maintaining the MSD To remove the ion source Source radiator Feedthrough board Ion source Thumbscrew Thumbscrew Source heater and temperature sensor wires...

  • Page 148: To Disassemble The Ion Source

    Maintaining the MSD To disassemble the ion source To disassemble the ion source Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) Hex ball driver, 2.0-mm (8710-1804) Hex nut driver, 5.5-mm (8710-1220) Wrench, open-end, 10-mm (8710-2353) 1 Remove the ion source (page 146).
  • Page 149 Maintaining the MSD To disassemble the ion source Interface socket Source body Set screw Repeller Repeller insulator Filament Source heater assembly Repeller insulator Washer Repeller nut (do not overtighten) Filament Ion focus lens Drawout cylinder Drawout plate Lens insulator (one of a pair) Entrance lens...

  • Page 150: To Clean The Ion Source

    Maintaining the MSD To clean the ion source To clean the ion source Materials needed: Abrasive paper (5061-5896) Alumina abrasive powder (8660-0791) Aluminum foil, clean Cloths, clean (05980-60051) Cotton swabs (5080-5400) Glass beakers, 500 ml Gloves, clean, lint-free large (8650-0030) small (8650-0029) Solvents acetone, reagent-grade...
  • Page 151 Maintaining the MSD To clean the ion source Source body Repeller Interface socket Drawout plate Drawout cylinder Ion focus lens Entrance lens...
  • Page 152 Maintaining the MSD To clean the ion source Major contamination In the event of a diffusion pump backstream or other major contamination, the other source components must be cleaned (ultrasonically but not abrasively) or replaced. & $ 8 7 , 2 1 The filaments, source heater assembly, and insulators cannot be cleaned ultrasonically.
  • Page 153 Maintaining the MSD To clean the ion source 8 Dry the cleaned parts in an oven at 100 ° – 150 °C for 30 minutes. : $ 5 1 , 1 * /HW WKHVH SDUWV FRRO EHIRUH \RX KDQGOH WKHP Take care to avoid recontaminating cleaned and dried parts.

  • Page 154: To Reassemble The Ion Source

    Maintaining the MSD To reassemble the ion source To reassemble the ion source Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) Hex ball driver, 2.0-mm (8710-1804) Hex nut driver, 5.5-mm (8710-1220) Wrench, open-end, 10-mm (8710-2353) 1 Slide the drawout plate and the drawout cylinder into the source body.
  • Page 155 Maintaining the MSD To reassemble the ion source Interface socket Source body Set screw Repeller Repeller insulator Filament Source heater assembly Repeller insulator Washer Repeller nut Filament Ion focus lens Drawout cylinder Drawout plate Lens insulator (one of a pair) Entrance lens...

  • Page 156: To Reinstall The Ion Source

    Maintaining the MSD To reinstall the ion source To reinstall the ion source Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Pliers, long-nose (8710-1094) 1 Slide the ion source into the source radiator. 2 Install and hand tighten the source thumbscrews. Do not overtighten the thumbscrews.
  • Page 157 Maintaining the MSD To reinstall the ion source Source radiator Feedthrough board Ion source Thumbscrew Thumbscrew Source heater and sensor wires Ion focus pin (orange wire) Entrance lens pin (blue wire)

  • Page 158: To Remove A Filament

    Maintaining the MSD To remove a filament To remove a filament Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) 1 Vent the MSD (page 52). 2 Open the vacuum manifold (page 54). 3 Remove the ion source (page 146). 4 Remove the filament(s) to be replaced.
  • Page 159 Maintaining the MSD To remove a filament Filament 1 Filament 2...

  • Page 160: To Reinstall A Filament

    Maintaining the MSD To reinstall a filament To reinstall a filament Materials needed: Filament assembly (G1099-60053) Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) 1 Install the new filament. 2 Reinstall the ion source (page 156). 3 Close the vacuum manifold (page 56).
  • Page 161 Maintaining the MSD To reinstall a filament Filament 1 Filament 2...

  • Page 162: To Remove The Heater And Sensor From The Ion Source

    Maintaining the MSD To remove the heater and sensor from the ion source To remove the heater and sensor from the ion source Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) Hex ball driver, 2.0-mm (8710-1804) Hex nut driver, 5.5-mm (8710-1220) 1 Vent the MSD (page 52).
  • Page 163 Maintaining the MSD To remove the heater and sensor from the ion source Source body Repeller Repeller insulator Filament Repeller insulator Washer Repeller nut Filament Source heater assembly...

  • Page 164: To Reinstall The Heater And Sensor In The Ion Source

    Maintaining the MSD To reinstall the heater and sensor in the ion source To reinstall the heater and sensor in the ion source Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) Hex ball driver, 2.0-mm (8710-1804) Hex nut driver, 5.5-mm (8710-1220) Source heater assembly (G1099-60177) 1 Unpack the new source heater assembly.
  • Page 165 Maintaining the MSD To reinstall the heater and sensor in the ion source Source body Repeller Repeller insulator Filament Repeller insulator Washer Repeller nut Filament Source heater assembly...

  • Page 166: To Remove The Heater And Sensor From The Mass Filter

    Maintaining the MSD To remove the heater and sensor from the mass filter To remove the heater and sensor from the mass filter Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) Hex ball driver, 2.0-mm (8710-1804) 1 Vent the MSD (page 52).
  • Page 167 Maintaining the MSD To remove the heater and sensor from the mass filter Mass filter contact lead – do not touch! Mass filter radiator Mass filter heater assembly Feedthrough board Mass filter contact lead – do not touch!

  • Page 168: To Reinstall The Heater And Sensor In The Mass Filter

    Maintaining the MSD To reinstall the heater and sensor in the mass filter To reinstall the heater and sensor in the mass filter Materials needed: Gloves, clean, lint-free large (8650-0030) small (8650-0029) Hex ball driver, 1.5-mm (8710-1570) Hex ball driver, 2.0-mm (8710-1804) Mass filter heater assembly (G1099-60172) 1 Unpack the new mass filter heater assembly.
  • Page 169 Maintaining the MSD To reinstall the heater and sensor in the mass filter Mass filter contact lead – do not touch! Mass filter radiator Mass filter heater assembly Feedthrough board Mass filter contact lead – do not touch!

  • Page 170: To Replace The Electron Multiplier Horn

    Maintaining the MSD To replace the electron multiplier horn To replace the electron multiplier horn Materials needed: Electron multiplier horn (05971-80103) Gloves, clean, lint-free large (8650-0030) small (8650-0029) 1 Vent the MSD (page 52). 2 Open the vacuum manifold (page 54). 3 Open the retaining clip.
  • Page 171 Maintaining the MSD To replace the electron multiplier horn Contact strip Retaining clip Electron multiplier horn Signal pin Signal pin...

  • Page 172: Maintaining The Gc/Msd Interface

    If you need more information about the locations or functions of GC/MSD interface components, refer to Chapter 6, GC/MSD Interface, on page 211. Most of the procedures in this chapter are illustrated with video clips in the HP 5973 MSD Reference Collection CD-ROM.

  • Page 173: To Remove The Gc/Msd Interface Heater And Sensor

    Maintaining the MSD To remove the GC/MSD interface heater and sensor To remove the GC/MSD interface heater and sensor Materials needed: Screwdriver, TORX T-15 (8710-1622) 1 Vent the MSD (page 52). Make sure you turn off the GC/MSD interface heater. This heater is controlled and powered by the GC.
  • Page 174 Maintaining the MSD To remove the GC/MSD interface heater and sensor Heater sleeve Heater sleeve screw Heater sleeve screw Set screw Temperature sensor Heater Interface welded assembly Insulation Cover...

  • Page 175: To Reinstall The Gc/Msd Interface Heater And Sensor

    Maintaining the MSD To reinstall the GC/MSD interface heater and sensor To reinstall the GC/MSD interface heater and sensor Materials needed: GC/MSD interface heater assembly (05972-60106) Heater sleeve (G1099-20210) – replace the old sleeve if it is damaged Screwdriver, TORX T-15 (8710-1622) 1 Slide the new heater and temperature sensor into the heater sleeve.
  • Page 176 Heater sleeve Heater sleeve screw Heater sleeve screw Set screw Temperature sensor Heater Interface welded assembly Insulation Cover...

  • Page 177: Maintaining The Electronics

    Maintaining the electronics The MSD electronics do not require any scheduled maintenance None of the electronic components of the MSD need to be replaced on a regular schedule. None of the electronic components in the MSD need to be adjusted or calibrated on a regular schedule. Avoid unnecessary handling of the MSD electronics.
  • Page 178 More information is available If you need more information about the functions of electronic components, refer to Chapter 8, Electronics, on page 233. Most of the procedures in this chapter are illustrated with video clips in the HP 5973 MSD Reference Collection CD-ROM.

  • Page 179: To Adjust The Rf Coils

    Maintaining the MSD To adjust the RF coils To adjust the RF coils Materials needed: Screwdriver, flat-blade, large (8730-0002) 1 Make sure the MSD is at thermal equilibrium. It takes at least 2 hours after all heated zones have reached their setpoints for the MSD to reach thermal equilibrium.
  • Page 180 Maintaining the MSD To adjust the RF coils RF coil adjustment screw RF coil adjustment screw 8 Repeat steps 4 through 7 for 650 amu. The minimum voltage is typically between 500 and 650 mV. 9 Exit the Set RFPA program. 10 Select MS OFF from the Diagnostics menu.

  • Page 181: To Replace The Primary Fuses

    Maintaining the MSD To replace the primary fuses To replace the primary fuses Materials needed: Fuse, T8 A, 250 V (2110-0969) – 2 required Screwdriver, flat-blade (8730-0002) The most likely cause of failure of the primary fuses is a problem with the foreline pump.
  • Page 182 Primary fuses in holders 7 Repeat steps 3 - 6 for the other fuse. Always replace both fuses. 8 Reconnect the MSD power cord to the electrical outlet. 9 Pump down the MSD (page 58).

  • Page 183: Vacuum System

    Diffusion pump MSD vacuum system, 186 Turbo pump MSD vacuum system, 187 Diffusion pump vacuum manifold, 188 Turbo pump vacuum manifold, 189 Side plate, 190 Vacuum seals, 192 Foreline pump, 194 Foreline gauge, 196 Diffusion pump and fan, 198 Turbomolecular pump and fan, 202 Calibration valve and vent valve, 204 Triode gauge tube, 206 Gauge controller, 208...
  • Page 184 Operation at high pressures would damage analyzer components. The HP 5973 MSD has one of two kinds of vacuum system: diffusion pump (HP G1098A) or turbomolecular (turbo) pump (HP G1099A). Many parts of the vacuum system are common to both, but some parts are specific to the one high vacuum pump or the other.
  • Page 185 Vacuum System Calibration valve Vent valve Front side plate thumbscrew Vacuum manifold Side plate Side plate hinge Triode gauge tube Rear side plate thumbscrew High vacuum pump clamps Foreline pump Foreline hose High vacuum pump High vacuum cooling fan...

  • Page 186: Diffusion Pump Msd Vacuum System

    Diffusion pump MSD vacuum system Diffusion pump MSD vacuum system The high vacuum pump in the HP G1098A model of the MSD is a vapor diffusion pump. A diffusion pump requires baffling to prevent vapor from migrating into the vacuum manifold. Foreline pressure is monitored by the foreline gauge. The ac board controls the diffusion pump heater.

  • Page 187: Turbo Pump Msd Vacuum System

    Turbo pump MSD vacuum system Turbo pump MSD vacuum system The high vacuum pump in the HP G1099A model of the MSD is a turbomolecular (turbo) pump. A turbo pump requires a screen to keep debris out of the pump, but no baffle is necessary.

  • Page 188: Diffusion Pump Vacuum Manifold

    Vacuum System Diffusion pump vacuum manifold Diffusion pump vacuum manifold The vacuum manifold is the chamber in which the analyzer operates. The mani- fold is extruded and machined from an aluminum alloy. Large openings in the side, front, and rear of the vacuum manifold are closed by plates. O-rings provide the seals between the plates and the manifold.

  • Page 189: Turbo Pump Vacuum Manifold

    Vacuum System Turbo pump vacuum manifold Turbo pump vacuum manifold The manifold for the turbo pump does not have a baffle or cooling fins. The turbo pump and the mounting bracket for the turbo controller are clamped directly to the manifold. In every other respect, the two manifolds are identical.

  • Page 190: Side Plate

    Vacuum System Side plate Side plate The side plate is a flat stainless steel plate that covers the large opening in the side of the vacuum manifold. The side plate is attached to the manifold with a hinge. The analyzer assembly is attached to the side plate inside the vacuum manifold. The hinge allows the side plate to swing away from the manifold for easy access to the analyzer.
  • Page 191 Vacuum System Side plate Side plate hinge EM voltage feedthrough Signal (detector output) feedthrough Mass filter (quadrupole) feedthrough Side board Screws for radiator mounting brackets Front side plate thumbscrew Ion source and heater feedthroughs Ion source and heater feedthroughs Mass filter (quadrupole) feedthrough Detector focus feedthrough High voltage (HED)

  • Page 192: Vacuum Seals

    Vacuum System Vacuum seals Vacuum seals Several types of Viton elastomer O-ring seals are used to prevent air leaks into the vacuum manifold. All these O-rings, and the surfaces to which they must seal, must be kept clean and protected from nicks and scratches. A single hair, piece of lint, or scratch can produce a serious vacuum leak.

  • Page 193: High Voltage Feedthrough Seal

    Vacuum System Vacuum seals High voltage feedthrough seal The high voltage (HED) feedthrough seal is an O-ring that is compressed against the side plate by a threaded collar. Side plate Side plate and other face seals Vacuum manifold KF seal with internal centering ring KF flange (clamp not shown) KF flange (clamp not shown)

  • Page 194: Foreline Pump

    Vacuum System Foreline pump Foreline pump The foreline pump reduces the pressure in the vacuum manifold so the high vac- uum pump can operate It also pumps away the gas load from the high vacuum pump. The foreline pump is connected to the high vacuum pump by a 130-cm hose called the foreline hose.
  • Page 195 Vacuum System Foreline pump Foreline hose (from high vacuum pump outlet) Ballast control (leave closed) Oil fill cap Exhaust outlet Drain plug Oil level window...

  • Page 196: Foreline Gauge

    Vacuum System Foreline gauge Foreline gauge The foreline gauge monitors the pressure (vacuum) at the exit of the diffusion pump. The primary function of the foreline gauge is diffusion pump control. When the foreline pump has reduced the pressure in the vacuum manifold to below 300 mTorr (0.3 Torr), the diffusion pump is automatically switched on.
  • Page 197 Vacuum System Foreline gauge Diffusion pump outlet Foreline gauge assembly KF10/16 seal KF10/16 clamp Foreline gauge cable – part of high vacuum control cable Foreline hose and hose clamp...

  • Page 198: Diffusion Pump And Fan

    Vacuum System Diffusion pump and fan Diffusion pump and fan The diffusion pump creates the low pressure (high vacuum) required for correct analyzer operation. The diffusion pump in the MSD is an air-cooled vapor diffusion pump with 90 liters/second capacity. It mounts with a KF50 fitting to a baffle adapter clamped to the bottom of the vacuum manifold.
  • Page 199 Vacuum System Diffusion pump and fan The small size of the diffusion pump allows it to heat up and cool down quickly. This simplifies pumpdown and venting. From initial power-on, the system can pump down to operating pressure in approximately 15 minutes. If the power fails, the diffusion pump fluid stops boiling before the vacuum manifold pressure begins to rise significantly.
  • Page 200 446. See Also Maintaining the MSD, page 93 Troubleshooting (HP 5973 MSD) in the online help for information on trouble- shooting air leaks and other vacuum problems...
  • Page 201 Vacuum System Diffusion pump and fan Diffusion pump outlet Inlet Cooling fins Too hot sensor Too cold sensor Fluid level window High vacuum power cable Cold fluid level marker Hot fluid level marker...

  • Page 202: Turbomolecular Pump And Fan

    Vacuum System Turbomolecular pump and fan Turbomolecular pump and fan The 250 liters/second turbomolecular (turbo) pump creates the low pressure (high vacuum) required for correct analyzer operation. The turbo pump in the MSD is clamped directly to the bottom of the vacuum manifold. The turbo pump has a cylindrical body with its inlet open to the interior of the vac- uum manifold.
  • Page 203 Vacuum System Turbomolecular pump and fan Turbo pump inlet Turbo pump outlet Hose clamp Foreline hose Pump vent port (blanked off) Connector for cable to turbo controller KF25 clamp...

  • Page 204: Calibration Valve And Vent Valve

    Vacuum System Calibration valve and vent valve Calibration valve and vent valve Calibration valve The calibration valve is an electromechanical valve with a vial to hold the tuning compound. The calibration valve is held onto the front end plate by two screws. A small O-ring provides a face seal.
  • Page 205 Vacuum System Calibration valve and vent valve Calibration valve Vent valve knob Calibration vial Vent valve knob O-ring Air passage Valve open Valve closed Valve open too far...

  • Page 206: Triode Gauge Tube

    The MSD is equipped with a triode gauge tube connected to the vacuum manifold. With the optional HP 59864B Gauge Controller, the triode gauge can be used to measure the pressure (high vacuum) in the vacuum manifold. The triode gauge will not operate at pressures above 8 ×...
  • Page 207 Vacuum System Triode gauge tube Filament voltage and emission current regulated by gauge controller Grid voltage supplied by gauge controller Filament voltage and emission current regulated by gauge controller Collector (ion) current measured by gauge controller Grid Filament (cathode) Collector Open to vacuum manifold...

  • Page 208: Gauge Controller

    Vacuum System Gauge controller Gauge controller The optional HP 59864B Gauge Controller allows you to use the triode gauge tube to monitor the pressure in the MSD vacuum manifold. This can aid in everyday operation and in troubleshooting. The HP 59864B Gauge Controller includes the controller and a cable for connect- ing the controller to the triode gauge.
  • Page 209 Vacuum System Gauge controller Pressure display Power indicator Gauge (on/off) switch Power cord Power switch Cable to triode gauge tube Fuse Ground point...

  • Page 211: Gc/Msd Interface

    GC/MSD interface, 212 GC/MSD Interface This chapter describes the function of the GC/MSD interface...
  • Page 212 The GC/MSD interface is heated by an electric cartridge heater. The heater is powered and controlled by Thermal Aux #2 heated zone of the HP 6890 Series GC. The GC/MSD interface temperature can be set from the MSD ChemStation or from the keypad of the gas chromatograph.
  • Page 213 GC/MSD Interface Heater sleeve Heater sleeve screws Welded interface assembly Interface socket Ionization chamber O-ring Vacuum manifold Screw Heater/sensor assembly Interface cover Insulation Guide tube Capillary column...
  • Page 215 Ion source, 218 Mass filter, 223 Detector, 227 Analyzer heaters and radiators, 230 Analyzer This chapter describes the parts of the analyzer...
  • Page 216 Analyzer The analyzer is the heart of the MSD The analyzer ionizes the sample, filters the ions, and detects them. The sample components exiting the GC column flow into the ion source. In the ion source, the sample molecules are ionized and fragmented. The resulting positive ions are repelled from the ion source into the quadrupole mass filter.
  • Page 217 Analyzer Detector (HED electron multiplier) Detector end mounting bracket Mass filter contact cable Mass filter (inside radiator) Mass filter heater assembly Ion source (inside radiator) Side board Feedthrough board Side plate Source end mounting bracket Mass filter contact cable...

  • Page 218: Ion Source

    Analyzer Ion source Ion source The ion source operates by electron ionization (EI). The sample enters the ion source from the GC/MSD interface. Electrons emitted by a filament enter the ion- ization chamber, guided by a magnetic field. The high-energy electrons interact with the sample molecules, ionizing and fragmenting them.

  • Page 219: Filaments

    Analyzer Ion source Filament Source body Ionization chamber Entrance lens Ion focus lens Lens insulators Drawout cylinder Drawout plate Repeller Filaments Two filaments are located on opposite sides of the outside of the ion source. The active filament carries an adjustable ac emission current. The emission current heats the filament, causing it to emit electrons;...

  • Page 220: Emission Current

    Analyzer Ion source better of the two filaments, run two autotunes, one with each filament. Use the fil- ament that gives the best results. Emission current is variable between 0 and -315 µA, but The filament emission current ( Emission) should be set to the software default for normal operation.

  • Page 221: Filament Care

    Certain practices will reduce the chance of early failure: • If you have an optional HP 59864B Gauge Controller, use it to verify that the system has an adequate vacuum before turning on the analyzer, especially after any maintenance has been performed.

  • Page 222: Drawout Plate And Cylinder

    Analyzer Ion source Drawout plate and cylinder The drawout plate forms another wall of the ionization chamber. The ion beam passes through the hole in the drawout plate and into the drawout cylinder. The drawout cylinder is slotted. The slots correspond to slots in the source body. These slots allow carrier gas and un-ionized sample molecules or fragments to be pulled away by the vacuum system.

  • Page 223: Mass Filter

    Analyzer Mass filter Mass filter The mass filter separates ions according to their mass-to-charge ratio (m/z). At a given time, only ions of a selected mass-to-charge ratio can pass through the filter to the detector. The mass filter in the MSD is a quadrupole. The quadrupole is a fused-silica (quartz) tube coated with a thin layer of gold.

  • Page 224: Amu Offset

    Analyzer Mass filter AMU offset AMU offset ( ) also affects the ratio of dc voltage to RF frequency on the AmuOffs mass filter. • Higher offset yields narrower peaks. • AMU offset generally affects peak widths equally at all masses. 219 width m/z 219 is a prominent ion near the middle of the mass range of PFTBA.

  • Page 225: Dc Polarity

    Analyzer Mass filter DC polarity The dc polarity ( DC Pol ) parameter selects the orientation of the direct current applied to the quadrupole mass filter. The dc polarity that works best for your MSD is determined at the factory. It is listed on the final test sheet accompanying your MSD.

  • Page 226: Quadrupole Maintenance

    Analyzer Mass filter Quadrupole maintenance The mass filter requires no periodic maintenance. It should not be removed from the radiator. If absolutely necessary (that is, if the only alternative is replacement), the quadrupole can be cleaned. Cleaning must be performed by Hewlett-Packard service personnel.

  • Page 227: Detector

    Analyzer Detector Detector The detector in the MSD analyzer is a high energy conversion dynode (HED) cou- pled to an electron multiplier (EM). The detector is located at the exit end of the quadrupole mass filter. It receives the ions that have passed through the mass fil- ter.
  • Page 228 Analyzer Detector As the EM horn ages, the voltage ( EMVolts ) required by the electron multiplier increases over time. If the electron multiplier voltage must always be set at or near -3000 V dc to complete Autotune, with no other probable cause, it may need to be replaced.
  • Page 229 Analyzer Detector Signal wire Mounting bracket Mounting screw HED (high energy dynode) High voltage HED wire Electron multiplier horn EMV (electron multiplier voltage) wire Detector focus wire HED feedthrough Rear side plate thumbscrew...

  • Page 230: Analyzer Heaters And Radiators

    Analyzer heaters and radiators The ion source and mass filter are housed in cylindrical aluminum tubes called radiators. The radiators control the distribution of heat in the analyzer. They also provide electrical shielding for analyzer components. The source heater and tem- perature sensor are mounted in the source heater block.
  • Page 231 Analyzer Analyzer heaters and radiators Detector end mounting bracket Mass filter radiator Mass filter heater assembly Ion source radiator Side plate Feedthrough board Source heater assembly Source end mounting bracket...
  • Page 232 Analyzer Analyzer heaters and radiators...
  • Page 233 Side board, 236 Electronics module, 237 Main board, 238 Signal amplifier board, 239 HP-IB/MS control card, 240 AC board, 241 Power supplies, 243 Toroid transformer, 244 Back panel and connectors, 245 Interfacing to external devices, 248 Status display and power switch, 250...
  • Page 234 The following assemblies make up the MSD electronics: • Electronics module • Main board • Signal amplifier board • HP-IB/MS control card • AC board • Low voltage (ac-dc) power supply • High voltage (HED) power supply • Toroid transformer assembly •...
  • Page 235 Electronics Source power cable Side board control cable Side board (front) Signal cable Signal amplifier board HP-IB/MS control card Main board HED power cable Detector focus cable Side board (rear) High voltage (HED) power supply AC board Low voltage power supply...

  • Page 236: Electronics

    Electronics Side board Side board The side board is mounted on the side plate. It performs the following functions: • Provides the 1 MHz reference clock for the RF amplifier. • Generates the RF component of the voltage applied to the quadrupole mass filter according to a signal from the main board.

  • Page 237: Electronics Module

    The electronics module contains: • Main board • Signal amplifier board • HP-IB/MS control card • AC board (power distribution / vacuum control board) • Low voltage (ac-dc) power supply • High voltage (HED) power supply • Toroid transformer assembly...

  • Page 238: Main Board

    The main board is mounted on the outer side of the electronics module. The main board performs the following functions: • Receives and decodes digital instructions from the HP-IB/MS control card. • Sends digital information to the HP-IB/MS control card.

  • Page 239: Signal Amplifier Board

    0 to 10 volts dc, proportional to the loga- rithm of the input current of 3 picoamps to 50 microamps. An analog-to-digital converter converts the amplifier output voltage to digital information. The HP-IB/MS control card “unlogs” the data into abundance counts proportional to the detector signal current.

  • Page 240: Hp-Ib/Ms Control Card

    HP-IB/MS control card HP-IB/MS control card The HP-IB/MS control card is located to the left of the main board on the electron- ics panel. The HP-IB/MS control card has two main functions: • Providing a communication interface between the MSD and the data system.

  • Page 241: Ac Board

    The ac board is mounted on the opposite side of the electronics panel from the HP-IB/MS control card. The ac board is also sometimes called the power distribu- tion / vacuum control board. The ac board performs the following functions: •...

  • Page 242: Pumpdown Safety Shutdown

    Electronics AC board Pumpdown safety shutdown In MSDs with serial numbers XX820XXXXX and above, the ac board will shut down both the high vacuum and the foreline pump if the system fails to pump down correctly. The conditions that trigger shutdown are: •...

  • Page 243: Power Supplies

    Electronics Power supplies Power supplies Low voltage (ac-dc) power supply The low voltage power supply is mounted next to the toroid transformer in the electronics module. A universal input power supply, it converts ac line voltage into the dc voltages used by the rest of the electronics. The power supply generates the following dc voltages: •...

  • Page 244: Toroid Transformer

    Electronics Toroid transformer Toroid transformer The toroid transformer is mounted next to the ac board. It provides 24 V ac for the mass filter and source heater circuits. The input wires take 120 V ac or 200 – 260 V ac from the ac board. Depending on the line voltage, one of two con- nectors on the ac board is used;...

  • Page 245: Back Panel And Connectors

    Back panel and connectors The back panel contains several connectors, primary fuses, and the HP-IB address switches. Most of these components are part of the ac board or the HP-IB/MS con- trol card, and extend through the back panel. These include: •...

  • Page 246: High Vacuum Signal ( Hivac Signal ) Connector

    Electronics Back panel and connectors High vacuum signal ( ) connector HIVAC SIGNAL The high vacuum signal connector is on the ac board, extending to the back panel. The high vacuum signal cable carries control signals to the turbo controller from the ac board, and high vacuum pump status information to the ac board.
  • Page 247 Electronics Back panel and connectors HP-IB address switch Remote start cable High vacuum control cable High vacuum power cable Primary fuses Power cord receptacle Foreline pump power cord HP-IB cable...

  • Page 248: Interfacing To External Devices

    Interfacing to external devices Remote control processor The remote control processor on the HP-IB/MS control card synchronizes start- run signals with GCs and other devices. The functions of the remote control pro- cessor are extended to the remote start (...

  • Page 249: System Ready

    Electronics Interfacing to external devices System ready When interfacing to an external device, it is often desirable to send a system ready signal to the device. In the case of a multi-sample Tekmar purge-and-trap, each sample is purged onto a trap where it waits for a ready signal. On receipt of the ready signal, the desorbtion cycle begins.

  • Page 250: Status Display And Power Switch

    Each LED provides information about the status of the MSD. In addition, if power to the MSD is interrupted, all three LEDs will blink until the data system reestab- lishes contact with the MSD and downloads the proper information to the HP-IB/ MS control card.
  • Page 251 Electronics Status display and power switch Power status LED Analyzer status LED Calibration valve status LED Power switch...

  • Page 252: Turbo Pump Controller

    Electronics Turbo pump controller Turbo pump controller The turbo pump controller provides power to the turbomolecular pump and regu- lates pump speed. If the pump fails to reach 80% speed within 10 minutes after beginning pumpdown, or if the speed drops below 50% during operation, the con- troller shuts off the turbo pump and triggers a fault state.
  • Page 253 Electronics, 256 Vacuum system, 260 Analyzer, 268 GC/MSD interface, 274 Consumables and maintenance supplies, 276 Parts This chapter lists parts that can be ordered for your MSD...
  • Page 254 Parts This chapter lists parts that can be ordered for use in maintaining your HP 5973 MSD. It includes most of the parts or assemblies in the MSDs. This chapter is organized so that related parts are grouped together. Some of the parts listed are not user-replaceable. They are listed here for the convenience of Hewlett-Packard service representatives.
  • Page 255 Parts If you cannot find a part you need If a part you need is not listed in this chapter, check the Hewlett-Packard Analytical Supplies Catalog. If you still can not find it, contact your Hewlett-Packard service representatives or your local Hewlett-Packard of- fice.

  • Page 256: Electronics

    Individual electronic components are not available. This section contains the following parts: cables, fuses, printed circuit boards (electronic assemblies). Table 8 Internal Cables Description HP part number AC board control cable (AC board to main board) G1099-60422 Chassis ground wire G1099-60433...
  • Page 257 Parts Electronics Table 9 External cables Description HP part number Remote start cable G1530-60930 HP-IB cable, 1-meter 8120-4654 Power cord, Australia, China 8120-1369 Power cord, Denmark 8120-2956 Power cord, Europe 8120-1689 Power cord, India / South Africa 8120-4211 Power cord, Japan (200 V)
  • Page 258 Parts Electronics Table 11 Printed circuit boards Description HP part number Electronics module, 120V G1099-69222 Electronics module, 240V G1099-69223 ac board G1099-69003 fan for electronics module 3160-1038 high voltage (HED) power supply G1099-80017 HP-IB/MS control card 05990-69412 30-pin SIMM (2 required)
  • Page 259 Source power cable G1099-60428 Side board control cable G1099-60410 Side board G1099-69015 Signal cable G1099-60416 Signal amplifier board G1099-69001 HP-IB/MS control card 05990-69410 Main board G1099-69010 HED power cable G1099-60431 High voltage (HED) power supply G1099-80017 Fan for electronics module 3160-1038...

  • Page 260: Vacuum System

    O-rings and seals, foreline pump and related components, diffusion pump vacuum system components, and turbomolecular pump vacuum system components. Table 12 O-rings and seals Description HP part number Calibration valve O-ring (1/4-inch) 0905-1217 Diffusion pump baffle adapter O-ring 0905-1443 End plate O-ring (for front and rear end plates)
  • Page 261 Parts Vacuum system Face seal KF seal with internal centering ring KF seal with external centering ring Compression seal...
  • Page 262 Parts Vacuum system Table 13 Foreline pump and related parts Description HP part number Foreline hose assembly (hose and internal spring) 05971-60119 Foreline pump 120V G1099-89023 230V G1099-89024 Foreline pump inlet seal (KF10/16) 0905-1463 Hose clamp 1400-1234 KF10/16 clamp (foreline inlet and oil trap)
  • Page 263 Parts Vacuum system Foreline hose 05971-60119 Hose clamp 1400-1234 KF16 hose adapter G1099-20531 KF 10/16 clamp 0100-1397 KF10/16 seal 0905-1463 Foreline pump 120 V ac G1099-89023...
  • Page 264 Parts Vacuum system Table 14 Diffusion pump MSD vacuum system components Description HP part number Baffle (inside stem of triode gauge tube – not shown) 05972-00015 Calibration valve assembly G1099-60200 calibration vial 05980-20018 Claw clamps for baffle adapter 0100-1881 Collar for triode gauge tube (not shown)
  • Page 265 Parts Vacuum system Calibration valve assembly (diffusion pump version) G1099-60200 Vent valve knob G1099-20554 Vacuum manifold (diffusion pump version) G1099-20549 Side plate G1099-60021 Triode gauge tube 0960-0897 Diffusion pump baffle adapter G1099-20021 KF50 clamp 0100-1395 Diffusion pump 120V G1099-80500 Foreline gauge assembly G1099-60545 Fan (diffusion pump position) 3160-1037...
  • Page 266 Parts Vacuum system Table 15 Turbomolecular pump MSD vacuum system components Description HP part number Baffle (inside stem of triode gauge tube – not shown) 05972-00015 Calibration valve assembly G1099-60203 calibration vial 05980-20018 Claw clamps for turbo pump 0100-1881 Collar for triode gauge tube...
  • Page 267 Parts Vacuum system Calibration valve assembly (turbo pump version) G1099-60203 Vent valve knob G1099-20554 Vacuum manifold (turbo pump version) G0199-20550 Side plate G1099-60021 Triode gauge tube 0960-0897 Turbo pump controller G1099-89002 Turbo pump G1946-89001 Fan (turbo pump position) 3160-1037...

  • Page 268: Analyzer

    This table lists the replacement parts for the analyzer. Analyzer screws and the individual ion source parts are listed the next tables. Table 16 Analyzer parts Description HP part number Analyzer (complete, tested, with side board) G1099-69228 detector (complete) G1099-80001...
  • Page 269 Parts Analyzer Table 17 Analyzer screws Description HP part number Heater/sensor (quadrupole) set screw 0515-1446 Ion source thumbscrew G1099-20138 Magnet mounting screws 0515-1046 Screw to attach magnet bracket to source radiator 0515-1602 Screws to attach source radiator and detector to quadrupole radiator...
  • Page 270 Parts Analyzer Table 18 Ion source parts Description HP part number Ion source (complete) G1099-60102 drawout cylinder G1072-20008 drawout plate 05971-20134 entrance lens 05971-20126 filament 05972-60053 interface socket G1099-20136 ion focus lens 05971-20143 lens insulator (pair) 05971-20130 repeller assembly (complete)
  • Page 271 Parts Analyzer Source body G1099-20130 Setscrew 0515-1446 Filament 05972-60053 GC/MSD interface socket G1099-20136 Repeller assembly G1099-60170 Screws 0515-1046 Screws 0515-1046 Lens insulator (set) 05971-20130 Entrance lens 05971-20126 Ion focus lens 05971-20143 Drawout cylinder G1072-20008 Drawout plate 05971-20134...
  • Page 272 Parts Analyzer Table 19 Repeller assembly parts Description HP part number Repeller assembly G1099-60170 insulator (2 required) G1099-20133 nut, 5.5-mm 0535-0071 repeller G1099-20132 setscrew 0515-1446 source heater assembly (includes heater, sensor, and heater block) G1099-60177 washer 3050-0891...
  • Page 273 Parts Analyzer Repeller G1099-20132 Insulator G1099-20133 Setscrew 0515-1446 Insulator G1099-20133 Washer 3050-0891 Nut, 5.5-mm 0535-0071 Source heater assembly G1099-60177...

  • Page 274: Gc/Msd Interface

    Parts GC/MSD interface GC/MSD interface This table lists the replacement parts related to the GC/MSD interface. Table 20 GC/MSD interface Description HP part number GC/MSD interface (complete) G1099-60300 interface column nut (not shown) 05988-20066 heater sleeve G1099-20210 heater/sensor assembly G1099-60107...
  • Page 275 Parts GC/MSD interface Heater sleeve G1099-20210 Screws for heater sleeve 0515-0383 Welded interface assembly G1099-60301 Interface socket Ion source body O-ring 0905-1405 Vacuum manifold Screw 0515-0380 Heater/sensor assembly G1099-60107 Interface cover G1099-00005 Insulation G1099-20301...

  • Page 276: Consumables And Maintenance Supplies

    Consumables and maintenance supplies Consumables and maintenance supplies This section lists parts available for cleaning and maintaining your MSD. Table 21 Maintenance supplies Description HP part number Abrasive paper, 30 µm 5061-5896 Alumina powder 8660-0791 Cloths, clean (package of 300)
  • Page 277 Pliers, long-nose (1.5-inch nose) 8710-1094 Screwdrivers flat-blade, large 8730-0002 TORX, T-10 8710-1623 TORX, T-15 8710-1622 TORX, T-20 8710-1615 Shipping kits HP 5973 MSD G1099-60565 HP 6890 Series GC G1530-60860 Tweezers, non-magnetic 8710-0907 Wrenches, open-end 1/4-inch x 5/16-inch 8710-0510 10-mm 8710-2353 Wrist strap, anti-static...
  • Page 278 Parts Consumables and maintenance supplies Table 23 Ferrules Description HP part number Blank, graphite-vespel 5181-3308 GC/MSD interface 0.3-mm id, 85% Vespel 15% graphite, for 0.10-mm id columns 5062-3507 0.4-mm id, 85% Vespel 15% graphite, for 0.20-mm id and 5062-3508 0.25-mm id columns 0.5-mm id, 85% Vespel 15% graphite, for 0.32-mm id columns...
  • Page 279 Parts Consumables and maintenance supplies Table 24 Miscellaneous parts and samples Description HP part number Diffusion pump fluid (18.5 ml) 6040-0809 Electron multiplier horn 05971-80103 Filament assembly G1099-60053 Foreline pump oil (1 liter) 6040-0834 Foreline exhaust oil trap 3150-0761 Heater/sensor assemblies...
  • Page 281 Background, high, 75, 90 AC power cord. See Power cord Ballast control, on foreline pump, 194 Adding foreline pump fluid, 102 Baseline, chromatographic Address switches, HP-IB, 245 falling, 72 Adjusting the RF coils, 179 high, 72 Air leaks, 89 rising, 72...
  • Page 282 (HIVAC POWER), 246 Cleanliness, importance during maintenance, 144 high vacuum signal (HIVAC SIGNAL), 246 Closing the vacuum manifold, 56 HP-IB (I/O), 245 Column bleed, 18 power cord receptacle, 246 as a source of contamination, 90 remote start, 245, 248...
  • Page 283 Detector, 227 difficulty with the EM supply, 84 high voltage (HED) power supply, 243 electron multiplier horn, 227 HP-IB/MS control card, 240 electron multiplier voltage, 227 locations of major components, 235 replacing the horn, 170 low voltage power supply, 243...
  • Page 284 Index Error messages Ferrules difficulty in mass filter electronics, 84 conditioning, 18 difficulty with the EM supply, 84 part numbers, 278 difficulty with the fan, 85 Filaments, 219 difficulty with the HED supply, 85 care, 221 difficulty with the high vacuum pump, 85 electron energy, 219 foreline pressure has exceeded 300 mTorr, 86 emission current, 220...
  • Page 285 Index Foreline pump oil GC/MSD interface, 211 – 214 adding and checking, 102 failure to heat up, 83 as a source of contamination, 90 heated zone controlling, 212 draining, 104 heater, 34, 212 refilling the pump with, 106 maintaining, 172 Foreline pump power cord receptacle, 246 part numbers, 274 Foreline trap.
  • Page 286 HP-IB filament, removing, 158 address switches, 245 filaments, 219 connector, 245 heater, 230 HP-IB/MS control card, 240 heater and sensor, reinstalling, 164 interfacing to external devices, 248 heater and sensor, removing, 162 RAM on, 240 ion focus lens, 222 remote control processor, 248...
  • Page 287 Index foreline gauge, removing, 126 foreline pump oil, checking and adding, 102 LEDs. See Status Display foreline pump oil, draining, 104 Line voltage foreline pump, refilling, 106 hazards of ungrounded outlet, 32 GC/MSD interface, 172 symptoms of incorrect or missing, 68, 80 GC/MSD interface heater and sensor, reinstall- Log amplifier.
  • Page 288 Index Malfunctions. See Symptoms of malfunctions Mass-to-charge ratio, 223 Manual tune, 48 Monitoring Mass assignments, incorrect, 76 foreline pressure, 36 Mass filter turbo pump speed, 36 219 width, 224 vacuum manifold pressure, 44 amu gain, 223 Monitors, 38 amu offset, 224 Moving the MSD, 62 dc polarity, 225 MS error numbers, 84...
  • Page 289 Index PFTBA (perfluorotributylamine), 204 Polarity (dc), of the mass filter, 225 Part numbers, inside front cover Power cord See also Parts ac, 246 Parts, 253 – ?? foreline pump, 246 analyzer, 268 receptacle, 246 consumables, 276 Power status LED, 250 diffusion pump vacuum system, 264 Power supplies electronic, 256...
  • Page 290 Radiators, 230 Signal amplifier board, 239 Relative abundance, 77 Signal, not enough to begin tune, 88 Remote start connector, 245, 248 Smartcard. See HP-IB/MS control card Repeatability, poor, 74 Solvent peak Repeller, 221 effect if analyzer is on, 84, 85...
  • Page 291 Index Symptoms of malfunctions MSD does not turn on, 68 baseline is falling, 72 MSD is on but status LEDs are all blinking, 69 baseline is high, 72 no peaks, 70, 86 baseline is rising, 72 peak widths are inconsistent, 76 baseline wanders, 73 peaks are fronting, 71 chromatographic symptoms, 70 –...
  • Page 292 Index Tuning, 48 cannot begin, 88 Target tune, 48 compound, 204 Temperature sensors See also Autotune GC/MSD interface, reinstalling, 175 See also the online help in the software GC/MSD interface, removing, 173 Turbo pump controller, 252 in the MSD analyzer, 34 Turbomolecular (turbo) pump, 202 ion source, reinstalling, 164 monitoring the speed of, 36, 38...
  • Page 293 Index Vacuum seals, 192 part numbers, 260 Vacuum system, 183 – ?? determining type, 16 diffusion pump system overview, 186 maintaining, 101 maintenance schedule, 94, 101 overview, 184 part numbers, 260 status, monitoring, 36, 38 turbo pump system overview, 187 Valve calibration, 204 vent, 204...
  • Page 294 Index...
  • Page 295 50% relative humidity products which are designated beyond the initial warranty Non-operating humidity: 4. Operation outside of the by HP for use with a hardware period. 10 to 95% relative humidity, environmental and electrical product, when properly non-condensing specifications for the product.
  • Page 296 Chapter —...
  • Page 297 ®         Copyright © 1998 Manual Part Number Hewlett-Packard G1099-90027 Printed in USA 11/98...

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